Composite filter element assembly for drinking water filter

Abstract

The invention relates to the technical field of filtering equipment, in particular to a composite filter element assembly for a drinking water filter, which is characterized by comprising a shell and a shell cover, one end of the shell is sealed, the other end of the shell is open, and the shell cover is mounted on the opening of the shell; the shell is composed of an outer cylinder and an inner cylinder located on the inner side of the outer cylinder, a plurality of flow guide plates are arranged between the outer cylinder and the inner cylinder, the flow guide plates are annularly distributed around the axis of the shell, and one of every two adjacent flow guide plates is installed on the outer cylinder; the space between the outer cylinder and the inner cylinder is separated by adopting the multiple flow guide plates, and water flow is guided, so that the water flow flows in an S shape and penetrates through each filtering unit, multi-stage water purification work of the multiple filtering units is achieved, the multiple filtering units are annularly arranged in the shell, and the filtering efficiency is improved. A plurality of filter units can be conveniently arranged more tightly, and the volume is reduced, so that the volume and the occupied space of the filter element are reduced, and the use and the installation are convenient.

Description

Technical Field

[0001] The invention relates to the technical field of filtering equipment, in particular to a composite filter element assembly for drinking water filters. Background Art

[0002] The filter element is one of the core components of the water purifier. It mainly purifies and filters the raw water, removing impurities, odors, bacteria, chemicals and other impurities in the raw water. The composite filter element is a multifunctional filter element that integrates multiple filtration layers such as activated carbon, ceramics, polymers, and reverse osmosis membranes to achieve multi-level filtration treatment of different substances in the raw water, thereby ensuring the safety and purity of the water quality.

[0003] In commonly used water purifiers, the composite filter element is generally composed of multiple independent filter elements arranged side by side. Each filter element has the function of filtering different substances in the raw water. The arrangement and combination of multiple filter elements will make the size of the water purifier larger. During installation, it takes up a lot of space, and due to the influence of the size, the installation work is more inconvenient. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a composite filter element assembly for a drinking water filter, and the specific technical solution adopted is:

[0005] A composite filter element assembly for a drinking water filter comprises a housing and a housing cover, wherein one end of the housing is sealed and the other end is open, and the housing cover is mounted on the opening of the housing;

[0006] The outer shell is composed of an outer cylinder and an inner cylinder located inside the outer cylinder, a plurality of guide plates are arranged between the outer cylinder and the inner cylinder, the plurality of guide plates are distributed in a ring shape around the axis of the outer shell, and one of two adjacent guide plates is installed on the outer cylinder, and the other guide plate is installed on the inner cylinder, and water channels are reserved between the guide plate on the outer cylinder and the inner cylinder and between the guide plate on the inner cylinder and the outer cylinder, so that the guide plates and the water channels guide the water flow between the outer cylinder and the inner cylinder, the space between the two adjacent guide plates is filled by the filter unit, and a water inlet is opened on the inner cylinder;

[0007] The shell cover is provided with a water purification pipe which can communicate with the interior of the inner cylinder;

[0008] The water inlet is located at the tail end of the flow path of the water between the outer cylinder and the inner cylinder, and the surface where the guide plate is located coincides with the axis of the outer shell.

[0009] Optimized in the above implementation, two first partitions are arranged between the outer cylinder and the inner cylinder, the two first partitions are relatively distributed with the axis of the outer shell as the reference axis, and the two first partitions divide the space between the outer cylinder and the inner cylinder into two independent spaces, each independent space is configured with a filter group composed of a plurality of filter units, the two filter groups in the two independent spaces are the same, and their arrangement directions are opposite;

[0010] An inlet and outlet structure is provided on the outer wall of the outer cylinder, and the inlet and outlet structure is connected to the space on both sides of a first partition. The number of the water inlets is set to two, and they are respectively distributed on both sides of another first partition. When water flows in an independent space and enters the inner cylinder through one water inlet, the water in the inner cylinder enters another independent space through another water inlet, and the water flow in the independent space performs a backwashing effect on the multiple filter units in the independent space.

[0011] The water inlet and outlet structure is used to introduce raw water into an independent space and discharge water in another independent space.

[0012] Optimized in the above implementation, the water inlet and outlet structure includes a water guide chamber, the shape of the water guide chamber is circular, and two water guide pipes are arranged on the end surface of the water guide chamber facing the shell, and the two water guide pipes are respectively connected to the two independent spaces, when one water guide pipe is used for water supply, the other water guide pipe is used for drainage;

[0013] A second partition is arranged in the water guide chamber, the second partition rotates around the axis of the water guide chamber, and the second partition divides the internal space of the water guide chamber into two water guide spaces, the two water guide spaces are respectively connected with two water guide pipes, and the water guide chamber is connected with a water inlet pipe and a drain pipe. When the water inlet pipe is connected with one water guide space, the drain pipe is connected with the other water guide space. When the second partition rotates, the positions of the two water guide spaces can be exchanged;

[0014] Wherein, a water valve is arranged on the drainage pipe.

[0015] Optimized in the above implementation, the water guide chamber is provided with a handle, the handle is connected to the second baffle and the second baffle is rotated by rotating the handle, the handle is provided with a clamping column, and the clamping column is provided with a leaf spring;

[0016] A U-shaped frame is arranged on the outer side of the clamping column, the U-shaped frame is fixed on the water guide chamber, and the U-shaped frame limits the moving position of the clamping column, and the leaf spring is connected to the U-shaped frame.

[0017] Optimized in the above implementation, the multiple filter units in each of the independent units are PP cotton filter element, activated carbon filter element, ultrafiltration filter element, reverse osmosis membrane filter element, ceramic filter element and nanofiltration in sequence.

[0018] Optimized in the above implementation, a plurality of filter layers are arranged inside the filter unit, and each filter layer is a folded structure.

[0019] Optimized in the above implementation, each filter unit is provided with a pressing frame, which is fixed to the inner wall of the outer tube by a plurality of spring pieces, and the pressing frame and two guide plates on the filter unit cooperate to fix the filter unit.

[0020] Optimized in the above implementation, a sealing structure is provided between the shell opening and the shell cover, the sealing structure comprises two slot plates, one of which is mounted on the inner wall of the outer cylinder, and the other is mounted on the shell cover, a sealing ring is provided between the two slot plates, the cross-section of the sealing ring is a right angle, and the two right-angled sides of the sealing ring are respectively clamped in the two slot plates;

[0021] The inner corner of the sealing ring is set to be an outwardly convex arc, and a deformation hole is opened inside the sealing ring.

[0022] Optimized in the above implementation, a rotating shaft is provided in the middle of the inner cylinder, and spiral blades are provided on the rotating shaft. When the rotating shaft and the spiral blades rotate, the spiral blades provide thrust for the water in the inner cylinder.

[0023] Optimized in the above implementation, the sealed end of the outer shell is provided with a power bin, the rotating shaft passes through the outer shell and extends into the power bin, a plurality of fan blades are provided on the outer wall of the rotating shaft in the power bin, the input end of the water inlet pipe is connected and installed on the power bin, and a water supply pipe is connected on the outer wall of the power bin, wherein the input end of the water inlet pipe and the water supply pipe are respectively located on the left and right sides of the power bin, and the input end of the water inlet pipe and the water supply pipe are both along the tangent direction of the circle where the power bin is located.

[0024] The advantages of the present invention are:

[0025] By using multiple guide plates to separate the space between the outer cylinder and the inner cylinder and guide the water flow, the water flows in an S shape and passes through each filter unit, thereby achieving multi-stage water purification by multiple filter units, and the multiple filter units are arranged in a ring shape in the outer shell, which can facilitate the arrangement of the multiple filter units more closely and reduce their volume, thereby reducing the volume and occupied space of the filter element, and facilitating use and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of the middle shell in a sectional top view;

[0029] Figure 3 yes Figure 1 Schematic diagram of the enlarged structure of the middle water tank;

[0030] Figure 4 yes Figure 3 Schematic diagram of the internal structure of the middle water tank;

[0031] Figure 5 A schematic diagram of a partially enlarged cross-sectional structure of a filter unit in the present invention;

[0032] Figure 6 It is a partial enlarged structural schematic diagram of the sealing unit between the shell and the shell cover in the present invention;

[0033] Figure 7 yes Figure 1 A schematic diagram of the enlarged cross-section of the middle power compartment;

[0034] Figure 8 It is a schematic diagram of the flow direction of water in the housing in the present invention;

[0035] Markings in the attached drawings: 1. outer shell; 2. shell cover; 3. outer cylinder; 4. inner cylinder; 5. guide plate; 6. filter unit; 7. water inlet; 8. clean water pipe; 9. first partition; 10. water guide chamber; 11. water guide pipe; 12. second partition; 13. water inlet pipe; 14. drain pipe; 15. water valve; 16. handle; 17. clamping column; 18. leaf spring; 19. U-shaped frame; 20. filter layer; 21. pressure frame; 22. spring; 23. slot plate; 24. sealing ring; 25. deformation hole; 26. rotating shaft; 27. spiral blade; 28. power chamber; 29. ​​fan blade; 30. water supply pipe. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0037] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. This embodiment is written in a progressive manner.

[0039] like Figure 1 to Figure 2 As shown, the composite filter element assembly for drinking water filter of the present invention comprises a shell 1 and a shell cover 2, wherein one end of the shell 1 is sealed and the other end thereof is open, and the shell cover 2 is mounted on the opening of the shell 1;

[0040] The shell 1 is composed of an outer cylinder 3 and an inner cylinder 4 located inside the outer cylinder 3. A plurality of guide plates 5 are arranged between the outer cylinder 3 and the inner cylinder 4. The plurality of guide plates 5 are distributed in a ring shape around the axis of the shell 1. One of the two adjacent guide plates 5 is installed on the outer cylinder 3, and the other guide plate 5 is installed on the inner cylinder 4. Water passages are left between the guide plate 5 on the outer cylinder 3 and the inner cylinder 4, and between the guide plate 5 on the inner cylinder 4 and the outer cylinder 3, so that the guide plates 5 and the water passages guide the water flow between the outer cylinder 3 and the inner cylinder 4. The space between the two adjacent guide plates 5 is filled by a filter unit 6, and a water inlet 7 is opened on the inner cylinder 4.

[0041] The shell cover 2 is provided with a water purification pipe 8 which can communicate with the interior of the inner cylinder 4;

[0042] The water inlet 7 is located at the tail end of the flow path of the water between the outer tube 3 and the inner tube 4 , and the surface where the guide plate 5 is located coincides with the axis of the outer shell 1 .

[0043] In detail, the space between the outer cylinder 3 and the inner cylinder 4 is divided into multiple filtering spaces by multiple guide plates 5, and each filtering space is configured with a filtering unit 6. When water flows through the filtering unit 6, the filtering unit 6 has a filtering effect on the water, and the multiple filtering units 6 can be made of filtering membranes with different functions. Since the surface where the guide plates 5 are located coincides with the axis of the outer shell 1, and the multiple guide plates 5 are evenly distributed, the filtering space between two adjacent guide plates 5 is fan-shaped, and the shape of the filtering unit 6 is also fan-shaped. Due to the restriction of the multiple guide plates 5, the water flow can pass through the filtering unit 6 and the water channel to flow in an S shape, and the water flow flows between the outer cylinder 3 and the inner cylinder 4 around the axis of the outer shell 1, so that the water flow can pass through all the filtering units 6, and each filtering unit 6 filters different impurities in the water, thereby realizing multi-stage purification of raw water. The purified water can enter the inner cylinder 4 through the water inlet 7 and be discharged through the clean water pipe 8 for easy use.

[0044] It can be seen from this that by using multiple guide plates 5 to separate the space between the outer cylinder 3 and the inner cylinder 4 and guide the water flow, the water flow is made to flow in an S shape and pass through each filter unit 6, thereby realizing multi-stage purification of water by multiple filter units 6, and multiple filter units 6 are arranged in a ring shape in the outer shell 1, which can facilitate the arrangement of multiple filter units 6 more closely and reduce their volume, thereby reducing the volume and occupied space of the filter element, and facilitating use and installation.

[0045] In the traditional method of stacking multiple filter elements in sequence, the thickness of each filter element is relatively small, the filtering effect of the filter element on raw water is poor, and some impurities can easily pass through the filter element. The structural method provided by the present invention will not affect the thickness of the filter element, so it can greatly reduce the volume while ensuring the filtering effect.

[0046] like Figure 2 As shown, two first partitions 9 are arranged between the outer cylinder 3 and the inner cylinder 4, and the two first partitions 9 are relatively distributed with the axis of the outer shell 1 as the reference axis, and the two first partitions 9 divide the space between the outer cylinder 3 and the inner cylinder 4 into two independent spaces, and each independent space is configured with a filter group composed of multiple filter units 6, and the two filter groups in the two independent spaces are the same, and their arrangement directions are opposite;

[0047] An inlet and outlet structure is provided on the outer wall of the outer cylinder 3, and the inlet and outlet structure is communicated with the space on both sides of a first partition plate 9. The number of the water inlets 7 is set to two, and they are respectively distributed on both sides of another first partition plate 9. When water flows in an independent space and enters the inner cylinder 4 through one water inlet 7, the water in the inner cylinder 4 enters another independent space through another water inlet 7, and the water flow in the independent space performs a backwashing effect on the multiple filter units 6 in the independent space.

[0048] The water inlet and outlet structure is used to introduce raw water into an independent space and discharge water in another independent space.

[0049] In detail, the two first partitions 9 divide the space between the outer cylinder 3 and the inner cylinder 4 into two independent spaces on the left and right. The structures of the two filter groups in the two independent spaces are the same. The arrangement of the multiple filter units 6 in the two filter groups is relative to each other with the surface where the first partition 9 is located as the reference plane. The two water inlets 7 are respectively connected to the two independent spaces, and the water inlets 7 are located at the tail end of the forward flow path of the water flow in the independent space where they are located. When the water flow in an independent space flows forward, the multiple filter units 6 in the independent space filter the water, and the filtered water smoothly enters the inner cylinder 4 and is discharged through the clean water pipe 8, while part of the water in the inner cylinder 4 can enter another independent space and flow in the opposite direction. The reversely flowing water can backwash the multiple filter units 6 in the independent space, and the sewage after backwashing can be discharged through the water inlet and outlet structure, thereby realizing automatic cleaning of the filter unit 6.

[0050] When the water inlet and outlet structure supplies water in a forward direction to another independent space, the direction of water flow in the outer shell 1 changes, and the multiple filter units 6 that were originally in the backwashing state filter the water, while the multiple filter units 6 that were originally in the filtering state are subjected to the backwashing effect of the water flow, thereby achieving automatic cleaning of all filter units 6 by changing the water supply direction.

[0051] By automatically cleaning the filter unit 6, impurities intercepted on the filter unit 6 can be conveniently cleaned and discharged, thereby avoiding clogging of the filter unit 6 by impurities, improving the fluidity of the water flow, and thus improving the water purification efficiency.

[0052] It should be pointed out that since the multiple filter units 6 in the independent space filter the water in sequence, some impurities will pass through the front filter unit 6 and be intercepted by the rear filter unit 6. During backwashing, the impurities on the rear filter unit 6 can pass through the front filter unit 6 and be discharged. Therefore, there is no need to worry that the impurities will stay between two adjacent filter units 6 during backwashing and cannot be discharged.

[0053] like Figure 3 to Figure 4 As shown, the water inlet and outlet structure includes a water guide chamber 10, which is circular in shape. Two water guide pipes 11 are arranged on the end surface of the water guide chamber 10 facing the housing 1. The two water guide pipes 11 are respectively connected to two independent spaces. When one water guide pipe 11 is used for water supply, the other water guide pipe 11 is used for drainage.

[0054] A second partition 12 is provided in the water guide chamber 10. The second partition 12 rotates around the axis of the water guide chamber 10, and the second partition 12 divides the internal space of the water guide chamber 10 into two water guide spaces. The two water guide spaces are respectively connected to the two water guide pipes 11. The water guide chamber 10 is connected to a water inlet pipe 13 and a drain pipe 14. When the water inlet pipe 13 is connected to one water guide space, the drain pipe 14 is connected to the other water guide space. When the second partition 12 rotates, the positions of the two water guide spaces can be exchanged.

[0055] Wherein, a water valve 15 is disposed on the drainage pipe 14 .

[0056] Specifically, the water inlet pipe 13 is used for water inlet, the drain pipe 14 is used for draining, and the water valve 15 is used for opening and closing the drain pipe 14. Figure 8 As shown, raw water enters a water guiding space in the water guiding chamber 10 through the water inlet pipe 13 and is positively supplied to an independent space between the outer cylinder 3 and the inner cylinder 4 through the water guiding pipe 11 corresponding to the space, and the sewage after backwashing in another independent space can be discharged through another water guiding pipe 11, another water guiding space and the drain pipe 14. When backwashing is not required, the water valve 15 can be closed, and the filtered water is directly discharged through the clean water pipe 8.

[0057] When it is necessary to swap the water flow direction between the outer tube 3 and the inner tube 4, the second partition plate 12 is rotated to swap the positions of the two water-conducting spaces. At this time, one of the water-conducting spaces originally connected to the water inlet pipe 13 is isolated from the water inlet pipe 13, and the water inlet pipe 13 is connected to the other water-conducting space, while the connection relationship between the drain pipe 14 and the water-conducting space is also swapped, thereby swapping the water inlet and outlet work of the two water-conducting pipes 11, and at this time the water flow direction is changed.

[0058] like Figure 3 As shown, the water guide chamber 10 is provided with a handle 16, which is connected to the second partition 12 and the second partition 12 is rotated by rotating the handle 16, and the handle 16 is provided with a clamping column 17, and the clamping column 17 is provided with a leaf spring 18;

[0059] A U-shaped frame 19 is provided on the outer side of the clamping column 17 . The U-shaped frame 19 is fixed on the water guide chamber 10 . The U-shaped frame 19 limits the moving position of the clamping column 17 . The leaf spring 18 is connected to the U-shaped frame 19 .

[0060] In detail, the U-shaped frame 19 limits the left and right moving position of the card column 17, and the leaf spring 18 provides an elastic thrust to the card column 17, so that the card column 17 abuts against one end of the U-shaped frame 19. When the position of the second partition 12 needs to be adjusted, the worker only needs to turn the handle 16 so that the handle 16 drives the second partition 12 to rotate. At this time, the card column 17 overcomes the elastic force of the leaf spring 18 and moves, and the leaf spring 18 undergoes elastic deformation. When the card column 17 moves from one side of the leaf spring 18 to the other side, the leaf spring 18 is compressed to the maximum extent and then gradually extends. At this time, the leaf spring 18 still provides elastic force to the card column 17 and makes the card column 17 abut against the other end of the U-shaped frame 19. In this way, the position of the card column 17 can be limited and the position of the handle 16 can be locked to prevent it from rotating at will.

[0061] It should be pointed out that in order to prevent the leaf spring 18 from elastically deforming due to a change in the tilting direction, the leaf spring 18 and the U-shaped frame 19 need to be rotationally connected.

[0062] Furthermore, the multiple filter units 6 in each of the independent units are PP cotton filter element, activated carbon filter element, ultrafiltration filter element, reverse osmosis membrane filter element, ceramic filter element and nanofiltration in sequence.

[0063] In detail, PP cotton filter element is used to filter large particles in the water; activated carbon filter element is used to absorb odor, organic matter and residual chlorine in the water; ultrafiltration filter element is used to filter microorganisms, bacteria, and suspended particles in the water; reverse osmosis membrane filter element is used to filter tiny particles and heavy metals in the water; ceramic filter element is used to filter microorganisms, impurities and particles in the water; nanofiltration is used to remove tiny particles and dissolved substances in the water. By adopting this filter element combination, it is convenient to comprehensively remove the products in drinking water to improve the water purification effect, ensure that people can drink pure water, and improve the purification effect.

[0064] like Figure 5 As shown, a plurality of filter layers 20 are arranged inside the filter unit 6, and each filter layer 20 is a folded structure.

[0065] In detail, by adopting this structural method, a single filter unit 6 can achieve multiple filtration operations on raw water through multiple filter layers 20, and the folding method can increase the working area and improve the filtration efficiency.

[0066] like Figure 2 As shown, each filter unit 6 is provided with a pressing frame 21 , which is fixed to the inner wall of the outer tube 3 via a plurality of spring pieces 22 , and the pressing frame 21 and the two guide plates 5 on the filter unit 6 cooperate to fix the filter unit 6 .

[0067] In detail, since the two adjacent guide plates 5 on the filter unit 6 are distributed in a cone shape, the angle between them is used to place the filter unit 6. Therefore, combined with the pushing force of the pressure frame 21 on the filter unit 6 toward the axis of the shell 1, the filter unit 6 can be fixed. The spring piece 22 provides an elastic thrust for the pressure frame 21, so that the filter unit 6 fits tightly with the guide plate 5, thereby preventing water from flowing through the gap between the guide plate 5 and the filter unit 6.

[0068] Due to the structural mode of the pressing frame 21 and the spring sheet 22, the filter units 6 with different thicknesses can be conveniently pressed and fixed.

[0069] like Figure 6 As shown, a sealing structure is provided between the opening of the housing 1 and the housing cover 2, and the sealing structure includes two slot plates 23, one of which is mounted on the inner wall of the outer cylinder 3, and the other is mounted on the housing cover 2, and a sealing ring 24 is provided between the two slot plates 23, and the cross-sectional shape of the sealing ring 24 is a right angle, and the two right-angled sides of the sealing ring 24 are respectively clamped in the two slot plates 23;

[0070] The inner corner of the sealing ring 24 is designed to be an outwardly convex arc, and a deformation hole 25 is provided inside the sealing ring 24 .

[0071] In detail, by providing a sealing ring 24, the gap between the housing 1 and the housing cover 2 can be sealed to prevent water leakage, and the two card slot plates 23 can fix the sealing ring 24;

[0072] Since the shape of the sealing ring 24 is a right angle, when the water pressure exerts a force on the inner angle of the sealing ring 24, its two right angle sides can fit more closely with the inner wall of the outer cylinder 3 and the shell cover 2 respectively, thereby improving its sealing effect. Moreover, since the inner angle of the sealing ring 24 is set to be an outwardly convex arc, and the deformation hole 25 is opened and closed inside the sealing ring 24, when the water pressure acts on the arc surface, it can deform the sealing ring 24, the deformation hole 25 is deformed, and the arc portion of the sealing ring 24 extends toward its two right angles, thereby further improving the sealing effect.

[0073] It should be pointed out that the sealing ring 24 of this structure can improve the sealing effect on the housing 1 and the housing cover 2 as the water pressure increases, so it has stronger sealing performance and stronger functionality.

[0074] like Figure 2 As shown, a rotating shaft 26 is provided in the middle of the inner cylinder 4 , and a spiral blade 27 is provided on the rotating shaft 26 . When the rotating shaft 26 and the spiral blade 27 rotate, the spiral blade 27 provides thrust for the water in the inner cylinder 4 .

[0075] In detail, by providing the rotating shaft 26 and the spiral blades 27, additional thrust can be provided for the purified water in the inner tube 4, so that the water flows toward the clean water pipe 8 and is discharged, thereby increasing the drainage pressure.

[0076] Since the interior of the outer shell 1 is sealed, when the water flow in the inner cylinder 4 is accelerated, it can generate suction on the water between the outer cylinder 3 and the inner cylinder 4, that is, a siphon effect, thereby accelerating the raw water purification speed and improving the purification efficiency.

[0077] like Figure 7 As shown, the sealed end of the outer shell 1 is provided with a power bin 28, the rotating shaft 26 passes through the outer shell 1 and extends into the power bin 28, a plurality of fan blades 29 are provided on the outer wall of the rotating shaft 26 in the power bin 28, the input end of the water inlet pipe 13 is connected and installed on the power bin 28, and a water supply pipe 30 is connected on the outer wall of the power bin 28, wherein the input end of the water inlet pipe 13 and the water supply pipe 30 are respectively located on the left and right sides of the power bin 28, and the input end of the water inlet pipe 13 and the water supply pipe 30 are both along the tangent direction of the circle where the power bin 28 is located.

[0078] In detail, raw water from the outside can enter the power chamber 28 through the water supply pipe 30. Since the water supply pipe 30 is tangent to the circle where the power chamber 28 is located, the water flow can drive the multiple fan blades 29 in the power chamber 28 to rotate, thereby driving the rotating shaft 26 and the spiral blades 27 to rotate. The water in the power chamber 28 flows into the outer casing 1 through the water inlet pipe 13, thereby providing power for the rotating shaft 26 with the help of the flow of raw water.

[0079] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. Composite filter element assembly for drinking water filter, It is characterized in that The invention comprises a shell (1) and a shell cover (2), wherein one end of the shell (1) is sealed and the other end is open, and the shell cover (2) is mounted on the opening of the shell (1); The outer shell (1) is composed of an outer cylinder (3) and an inner cylinder (4) located inside the outer cylinder (3); a plurality of guide plates (5) are arranged between the outer cylinder (3) and the inner cylinder (4); the plurality of guide plates (5) are distributed in a ring shape around the axis of the outer shell (1); one of two adjacent guide plates (5) is mounted on the outer cylinder (3), and the other guide plate (5) is mounted on the inner cylinder (4); a water passage is left between the guide plate (5) on the outer cylinder (3) and the inner cylinder (4) and between the guide plate (5) on the inner cylinder (4) and the outer cylinder (3); thereby, the guide plate (5) and the water passage guide the water flow between the outer cylinder (3) and the inner cylinder (4); the space between the two adjacent guide plates (5) is filled by a filter unit (6); and a water inlet (7) is opened on the inner cylinder (4); The shell cover (2) is provided with a water purification pipe (8) which can communicate with the interior of the inner cylinder (4); The water inlet (7) is located at the tail end of the flow path of the water between the outer cylinder (3) and the inner cylinder (4), and the surface where the guide plate (5) is located coincides with the axis of the outer shell (1).

2. The composite filter element assembly for drinking water filter according to claim 1, It is characterized in that Two first partitions (9) are arranged between the outer cylinder (3) and the inner cylinder (4), the two first partitions (9) are relatively distributed with the axis of the outer shell (1) as a reference axis, and the two first partitions (9) divide the space between the outer cylinder (3) and the inner cylinder (4) into two independent spaces, each of which is provided with a filter group consisting of a plurality of filter units (6), the two filter groups in the two independent spaces are the same, and their arrangement directions are opposite; An inlet and outlet structure is provided on the outer wall of the outer cylinder (3), and the inlet and outlet structure is connected to the space on both sides of a first baffle (9). The number of the water inlets (7) is set to two, and they are respectively distributed on both sides of another first baffle (9). When water flows through one water inlet (7) and filters in an independent space and enters the inner cylinder (4) through the one water inlet (7), the water in the inner cylinder (4) enters another independent space through the other water inlet (7), and the water flow in the independent space performs a backwashing effect on the multiple filter units (6) in the independent space. The water inlet and outlet structure is used to introduce raw water into an independent space and discharge water in another independent space.

3. The composite filter element assembly for drinking water filter according to claim 2, It is characterized in that The water inlet and outlet structure comprises a water guide chamber (10), the water guide chamber (10) is circular in shape, two water guide pipes (11) are arranged on the end surface of the water guide chamber (10) facing the housing (1), the two water guide pipes (11) are respectively connected to two independent spaces, and when one water guide pipe (11) is used for water supply, the other water guide pipe (11) is used for drainage; A second partition (12) is arranged in the water guide chamber (10), the second partition (12) rotates around the axis of the water guide chamber (10), and the second partition (12) divides the internal space of the water guide chamber (10) into two water guide spaces, the two water guide spaces are respectively connected to two water guide pipes (11), and the water guide chamber (10) is connected to a water inlet pipe (13) and a drain pipe (14), when the water inlet pipe (13) is connected to one water guide space, the drain pipe (14) is connected to the other water guide space, and when the second partition (12) rotates, the positions of the two water guide spaces can be exchanged; Wherein, a water valve (15) is arranged on the drainage pipe (14).

4. The composite filter element assembly for drinking water filter according to claim 3, It is characterized in that The water guide chamber (10) is provided with a handle (16), the handle (16) is connected to the second partition (12), and the second partition (12) is rotated by rotating the handle (16), the handle (16) is provided with a clamping column (17), and the clamping column (17) is provided with a leaf spring (18); A U-shaped frame (19) is provided on the outer side of the clamping column (17). The U-shaped frame (19) is fixed on the water guide chamber (10). The U-shaped frame (19) limits the moving position of the clamping column (17). The leaf spring (18) is connected to the U-shaped frame (19).

5. The composite filter element assembly for drinking water filter according to claim 2, It is characterized in that The multiple filter units (6) in each of the independent units are PP cotton filter element, activated carbon filter element, ultrafiltration filter element, reverse osmosis membrane filter element, ceramic filter element and nanofiltration in sequence.

6. The composite filter element assembly for drinking water filter according to claim 1, It is characterized in that A plurality of filter layers (20) are arranged inside the filter unit (6), and each filter layer (20) is a folded structure.

7. The composite filter element assembly for drinking water filter according to claim 1, It is characterized in that Each filter unit (6) is provided with a pressing frame (21), the pressing frame (21) being fixed to the inner wall of the outer cylinder (3) via a plurality of spring sheets (22), and the pressing frame (21) and two guide plates (5) on the filter unit (6) cooperate to fix the filter unit (6).

8. The composite filter element assembly for drinking water filter according to claim 1, It is characterized in that A sealing structure is provided between the opening of the outer shell (1) and the shell cover (2), the sealing structure comprising two slot plates (23), one of which is mounted on the inner wall of the outer cylinder (3), and the other of which is mounted on the shell cover (2), a sealing ring (24) is provided between the two slot plates (23), the cross-section of the sealing ring (24) is a right angle, and two right-angled sides of the sealing ring (24) are respectively clamped in the two slot plates (23); The inner corner of the sealing ring (24) is set to be an outwardly convex arc, and a deformation hole (25) is opened inside the sealing ring (24).

9. The composite filter element assembly for drinking water filter according to claim 3, It is characterized in that A rotating shaft (26) is provided in the middle of the inner cylinder (4), and a spiral blade (27) is provided on the rotating shaft (26). When the rotating shaft (26) and the spiral blade (27) rotate, the spiral blade (27) provides thrust for the water in the inner cylinder (4).

10. The composite filter element assembly for drinking water filter according to claim 9, It is characterized in that A power bin (28) is provided at the sealed end of the housing (1), a rotating shaft (26) passes through the housing (1) and extends into the power bin (28), a plurality of fan blades (29) are provided on the outer wall of the rotating shaft (26) in the power bin (28), an input end of the water inlet pipe (13) is connected and installed on the power bin (28), and a water supply pipe (30) is connected on the outer wall of the power bin (28), wherein the input end of the water inlet pipe (13) and the water supply pipe (30) are respectively located on the left and right sides of the power bin (28), and the input end of the water inlet pipe (13) and the water supply pipe (30) are both along the tangent direction of the circle where the power bin (28) is located.

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