A multi-cartridge interconnect structure

Abstract

The utility model discloses a kind of multi-filter core intercommunication structures, belong to water purifier technical field, including filter core and waterway board, filter core is provided with multiple, waterway board is respectively provided with filter core assembly position corresponding multiple filter cores, rotating seat is set on filter core assembly position, waterway board still has raw water channel, clean water channel and waste water channel side by side, multiple filter cores are respectively rotated and assembled on filter core assembly position by rotating seat, and after assembly, it is mutually parallel on raw water channel, clean water channel, waste water channel, first solenoid valve, third solenoid valve are communicated on raw water channel, second solenoid valve, fourth solenoid valve are communicated on waste water channel. The structure can make multiple filter cores keep normal water purification by the opening and closing cooperation of first, second, third, fourth solenoid valve, and also can reverse flush cleaning to different filter cores before and after, to improve the water purification efficiency of water purifier, the cleaning efficiency of filter core, and use flexibility.

Description

Technical Field

[0001] This utility model relates to the field of water purifier technology, specifically a multi-filter interconnection structure. Background Technology

[0002] With the development of science and technology and the improvement of people's living standards, water purifiers have gained widespread recognition and application due to their ability to purify and improve the purity of user water, making it healthier for users.

[0003] For example, Chinese utility model patent CN202021191564.5 discloses a filter cartridge assembly and a water purifier, which includes: a filter cartridge and multiple filter elements. The filter cartridge defines multiple receiving cavities, which are interconnected, with at least two cavities connected in parallel. The filter cartridge includes an inlet connector and an outlet connector, with the inlet connector connected to the top of any one of the receiving cavities, and the outlet connector also connected to the top of any one of the receiving cavities. The multiple filter elements are respectively disposed within the multiple receiving cavities. This filter cartridge assembly, by directly defining multiple receiving cavities for placing the filter elements within the cartridge, and with these cavities interconnected and at least two cavities connected in parallel, can accelerate the filtration efficiency of tap water within the receiving cavities. Furthermore, placing the inlet and outlet connectors of the filter cartridge at the top of any one of the receiving cavities allows for a more compact structure. However, this filter cartridge assembly cannot switch between water purification and backwashing operations with the parallel filter elements, resulting in poor flexibility and failing to meet user needs. Therefore, further improvement is necessary. Utility Model Content

[0004] The present invention aims to provide a multi-filter interconnection structure to overcome the shortcomings of the prior art.

[0005] A multi-filter interconnection structure designed for this purpose includes filter elements and a water circuit plate. Multiple filter elements are provided, and the water circuit plate has filter element assembly positions corresponding to each filter element. A rotating seat is provided at each filter element assembly position. The water circuit plate also has a raw water channel, a purified water channel, and a wastewater channel arranged side-by-side. Multiple filter elements are rotatably assembled at their respective filter element assembly positions via the rotating seats, and after assembly, they are connected in parallel to each other in the raw water channel, the purified water channel, and the wastewater channel. A first solenoid valve and a third solenoid valve are connected to the raw water channel, and a second solenoid valve and a fourth solenoid valve are connected to the wastewater channel.

[0006] The raw water channel, the purified water channel, and the wastewater channel extend linearly along both ends of the water circuit board.

[0007] The waterway plate has raw water inlets at both ends corresponding to the raw water channel.

[0008] The water circuit board has water inlets at both ends corresponding to the water purification channel.

[0009] Wastewater inlets are provided at both ends of the water circuit board corresponding to the wastewater channel.

[0010] The first solenoid valve and the third solenoid valve are linearly arranged along both ends of the water circuit board and are respectively connected to two different positions of the raw water channel. The second solenoid valve and the fourth solenoid valve are linearly arranged along both ends of the water circuit board and are respectively connected to two different positions of the wastewater channel.

[0011] The first solenoid valve and the second solenoid valve are located at one end of the bottom of the water circuit board, and the third solenoid valve and the fourth solenoid valve are located at the other end of the bottom of the water circuit board.

[0012] The filter element is provided in two parts, namely a first ultrafiltration filter element and a second ultrafiltration filter element. The first ultrafiltration filter element and the second ultrafiltration filter element are linearly arranged along both ends of the water circuit plate. The water circuit plate is provided with two filter element assembly positions, and the rotating seat is provided on each of the two filter element assembly positions. The first ultrafiltration filter element and the second ultrafiltration filter element are located at the top of the water circuit plate and are connected in parallel to each other in the raw water channel, the purified water channel and the wastewater channel after assembly.

[0013] The first ultrafiltration filter element and the second ultrafiltration filter element are respectively provided with a raw water inlet, a clean water inlet and a wastewater inlet. The rotating base is provided with a raw water connection port, a clean water connection port and a wastewater connection port. The raw water connection port is connected to the raw water inlet, the clean water connection port is connected to the clean water inlet and the wastewater connection port is connected to the wastewater inlet.

[0014] The filter cartridge assembly position is equipped with a raw water assembly port, a purified water assembly port, and a wastewater assembly port.

[0015] The raw water connector is connected to or separated from the raw water assembly port when the rotating seat rotates.

[0016] The water purification connector is connected to or separated from the water purification assembly port when the rotating seat rotates.

[0017] The wastewater connection port is connected to or separated from the wastewater assembly port when the rotating seat rotates.

[0018] A sealing element is provided between the raw water connector and the raw water assembly port, between the purified water connector and the purified water assembly port, and between the wastewater connector and the wastewater assembly port, and they are connected to each other in a sealed manner through the sealing element.

[0019] The filter element assembly position is annular and has an arc-shaped positioning groove. The rotating seat is circular and has a positioning shaft. The first ultrafiltration filter element and the second ultrafiltration filter element are respectively provided with positioning holes. The positioning shaft is inserted into the positioning hole and slides along the trajectory of the arc-shaped positioning groove when the rotating seat rotates.

[0020] A fixing ring is also provided on the filter element assembly position. The fixing ring is fixed on the filter element assembly position by fasteners and pressed on the rotating seat. The inner wall of the fixing ring is provided with a slot. The outer walls of the first ultrafiltration filter element and the second ultrafiltration filter element are respectively provided with buckles. The buckles engage or disengage with the slots when the first ultrafiltration filter element and the second ultrafiltration filter element rotate.

[0021] The multiple filter elements of this utility model can be rotatably assembled on the filter element assembly position by rotating the base, thereby facilitating the assembly and disassembly of the filter elements. After assembly, the multiple filter elements can be connected in parallel to each other in the raw water channel, the purified water channel, and the wastewater channel. In addition, a first solenoid valve and a third solenoid valve are connected to the raw water channel, and a second solenoid valve and a fourth solenoid valve are connected to the wastewater channel.

[0022] When the first and third solenoid valves are open and the second and fourth solenoid valves are closed, multiple filter cartridges can be connected in parallel and achieve normal water purification.

[0023] When the first and fourth solenoid valves are open and the second and third solenoid valves are closed, the purified water filtered by the previous filter element can backwash the next filter element.

[0024] When the second and third solenoid valves are open and the first and fourth solenoid valves are closed, the purified water filtered by the next filter element can backwash the previous filter element.

[0025] In other words, by coordinating the opening and closing of the first, second, third, and fourth solenoid valves, multiple filter cartridges can maintain normal water purification, improving water purification efficiency. Simultaneously, they can perform reverse flushing and cleaning of different filter cartridges before and after the filter cartridges, not only improving water utilization but also ensuring the cleanliness of the filter cartridges. Furthermore, even if individual filter cartridges are disassembled and replaced, it does not affect the water purification operation of other filter cartridges. This allows the water purifier to achieve the purpose of multiple filter cartridges alternating for water purification and self-cleaning, thereby effectively improving the water purification efficiency, filter cartridge cleaning efficiency, and usage flexibility of the water purifier. It also ensures the durability, longevity, and filtration effect of the filter cartridges in the water purifier, avoiding the drawbacks of frequent filter cartridge replacements and thus improving the user experience. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the present utility model.

[0027] Figure 2 This is a schematic diagram of the assembly structure from another perspective of an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the assembly structure from another perspective of an embodiment of the present utility model.

[0029] Figure 4 This is an exploded structural diagram of an embodiment of the present invention.

[0030] Figure 5 This is an exploded structural diagram from another perspective of an embodiment of the present invention.

[0031] Figure 6 This is an exploded structural diagram of the water channel plate, rotating seat, fixing ring, and sealing components.

[0032] Figure 7 This is an exploded structural diagram of the water channel plate, rotating seat, fixing ring, and seal from another perspective. Detailed Implementation

[0033] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0035] See Figures 1-7 This multi-filter interconnection structure includes filter elements and a water circuit plate 1. Multiple filter elements are provided, and the water circuit plate 1 is provided with filter element assembly positions 2 corresponding to multiple filter elements. A rotating seat 3 is provided on the filter element assembly position 2. The water circuit plate 1 also has a raw water channel 1.1, a clean water channel 1.2, and a wastewater channel 1.3 arranged side by side. Multiple filter elements are respectively rotated and assembled on the filter element assembly positions 2 via the rotating seat 3, and are connected in parallel to each other on the raw water channel 1.1, the clean water channel 1.2, and the wastewater channel 1.3 after assembly. The raw water channel 1.1 is connected to a first solenoid valve A1 and a third solenoid valve A3, and the wastewater channel 1.3 is connected to a second solenoid valve A2 and a fourth solenoid valve A4.

[0036] In this embodiment, multiple filter elements can be rotatably assembled on the filter element assembly position 2 via the rotating seat 3, thereby facilitating the assembly and disassembly of the filter elements. After assembly, the multiple filter elements can be connected in parallel to each other on the raw water channel 1.1, the purified water channel 1.2, and the wastewater channel 1.3. In addition, the first solenoid valve A1 and the third solenoid valve A3 are connected to the raw water channel 1.1, and the second solenoid valve A2 and the fourth solenoid valve A4 are connected to the wastewater channel 1.3.

[0037] When the first solenoid valve A1 and the third solenoid valve A3 are open, and the second solenoid valve A2 and the fourth solenoid valve A4 are closed, multiple filter elements can be connected in parallel and achieve normal water purification operation.

[0038] When the first solenoid valve A1 and the fourth solenoid valve A4 are open, and the second solenoid valve A2 and the third solenoid valve A3 are closed, the purified water filtered by the previous filter element can backwash the next filter element.

[0039] When the second solenoid valve A2 and the third solenoid valve A3 are open, and the first solenoid valve A1 and the fourth solenoid valve A4 are closed, the purified water filtered by the next filter element can backwash the previous filter element.

[0040] In other words, by coordinating the opening and closing of the first solenoid valve A1, the second solenoid valve A2, the third solenoid valve A3, and the fourth solenoid valve A4, multiple filter elements can maintain normal water purification, improving water purification efficiency. Simultaneously, different filter elements before and after the filter elements can be backwashed and cleaned, improving water utilization and ensuring filter cleanliness. Furthermore, even if individual filter elements are disassembled and replaced, it does not affect the water purification operation of other filter elements. This allows the water purifier to achieve the purpose of multiple filter elements alternating for water purification and self-cleaning, effectively improving the water purification efficiency, filter element cleaning efficiency, and usage flexibility of the water purifier. It also ensures the durability, longevity, and filtration effect of the filter elements in the water purifier, avoiding the drawbacks of frequent filter element replacements and thus improving the user experience.

[0041] The raw water channel 1.1, the purified water channel 1.2, and the wastewater channel 1.3 extend linearly along both ends of the water circuit board 1, thereby enabling the water to flow linearly and increasing the flow rate.

[0042] The waterway plate 1 has raw water inlets 1.11 at both ends corresponding to the raw water channel 1.1.

[0043] Water inlets 1.21 are provided at both ends of the water circuit board 1, corresponding to the water purification channel 1.2.

[0044] Wastewater inlets 1.31 are provided at both ends of the water circuit board 1, corresponding to the wastewater channel 1.3.

[0045] The raw water inlet 1.11, the purified water inlet 1.21, and the wastewater inlet 1.31 are respectively set at both ends of the water circuit board 1, so that the raw water channel 1.1, the purified water channel 1.2, and the wastewater channel 1.3 can be connected to different pipes at both ends of the water circuit board 1, improving the convenience of connecting the water circuit board 1 to the pipes. In addition, when the raw water inlet 1.11, the purified water inlet 1.21, and the wastewater inlet 1.31 are not in use, they can be sealed and blocked by plugs.

[0046] The first solenoid valve A1 and the third solenoid valve A3 are linearly arranged along both ends of the water circuit plate 1 and are respectively connected to two different positions of the raw water channel 1.1. The second solenoid valve A2 and the fourth solenoid valve A4 are linearly arranged along both ends of the water circuit plate 1 and are respectively connected to two different positions of the wastewater channel 1.3.

[0047] The first solenoid valve A1 and the second solenoid valve A2 are located at one end of the bottom of the water circuit board 1, and the third solenoid valve A3 and the fourth solenoid valve A4 are located at the other end of the bottom of the water circuit board 1.

[0048] In this embodiment, the first solenoid valve A1, the second solenoid valve A2, the third solenoid valve A3 and the fourth solenoid valve A4 are arranged in a rectangular pattern at the bottom of the water circuit board 1 to make reasonable use of the space of the water circuit board 1 and improve the space utilization rate.

[0049] There are two filter elements, namely a first ultrafiltration filter element 100 and a second ultrafiltration filter element 200. The first ultrafiltration filter element 100 and the second ultrafiltration filter element 200 are linearly arranged along both ends of the water channel plate 1. The water channel plate 1 is provided with two filter element assembly positions 2, and a rotating seat 3 is provided on each of the two filter element assembly positions 2. The first ultrafiltration filter element 100 and the second ultrafiltration filter element 200 are located at the top of the water channel plate 1 and are connected in parallel to each other in the raw water channel 1.1, the purified water channel 1.2, and the wastewater channel 1.3 after assembly.

[0050] In this embodiment, since the first ultrafiltration filter element 100 and the second ultrafiltration filter element 200 are located at the top of the water circuit plate 1 and are linearly arranged along both ends of the water circuit plate 1, they can form an upper and lower arrangement with the first solenoid valve A1, the second solenoid valve A2, the third solenoid valve A3 and the fourth solenoid valve A4, which can further utilize the space of the water circuit plate 1, reduce space waste, and thus save the space occupied by the water circuit plate 1 in the water purifier.

[0051] When the first solenoid valve A1 and the third solenoid valve A3 are open, and the second solenoid valve A2 and the fourth solenoid valve A4 are closed, the first ultrafiltration filter element 100 and the second ultrafiltration filter element 200 are connected in parallel and filter the water in sequence, thereby achieving normal water purification.

[0052] When the first solenoid valve A1 and the fourth solenoid valve A4 are open, and the second solenoid valve A2 and the third solenoid valve A3 are closed, the purified water filtered by the first ultrafiltration filter element 100 can backwash the second ultrafiltration filter element 200, ensuring the cleanliness of the second ultrafiltration filter element 200.

[0053] When the second solenoid valve A2 and the third solenoid valve A3 are open, and the first solenoid valve A1 and the fourth solenoid valve A4 are closed, the purified water filtered by the second ultrafiltration filter element 200 can backwash the first ultrafiltration filter element 100, ensuring the cleanliness of the first ultrafiltration filter element 100.

[0054] The first ultrafiltration filter element 100 and the second ultrafiltration filter element 200 are respectively provided with a raw water inlet 101, a clean water inlet 102, and a wastewater inlet 103. The rotating base 3 is provided with a raw water connection port 3.1, a clean water connection port 3.2, and a wastewater connection port 3.3. The raw water connection port 3.1 is connected to the raw water inlet 101, the clean water connection port 3.2 is connected to the clean water inlet 102, and the wastewater connection port 3.3 is connected to the wastewater inlet 103.

[0055] The filter element assembly position 2 is equipped with a raw water assembly port 2.1, a purified water assembly port 2.2, and a wastewater assembly port 2.3.

[0056] The raw water connection port 3.1 is connected to or separated from the raw water assembly port 2.1 when the rotating seat 3 rotates.

[0057] The water purification connector 3.2 is connected to or separated from the water purification assembly port 2.2 when the rotating seat 3 rotates.

[0058] The wastewater connection port 3.3 is connected to or separated from the wastewater assembly port 2.3 when the rotating seat 3 rotates.

[0059] During assembly, the first ultrafiltration filter element 100 and the second ultrafiltration filter element 200 are aligned with the raw water inlet 101, the purified water inlet 102, and the wastewater inlet 103, respectively, at the raw water connection port 3.1, the purified water connection port 3.2, and the wastewater connection port 3.3. The raw water connection port 3.1 is connected to the raw water inlet 101, the purified water connection port 3.2 is connected to the purified water inlet 102, and the wastewater connection port 3.3 is connected to the wastewater inlet. On 103, the first ultrafiltration filter element 100 and the second ultrafiltration filter element 200 are then driven to rotate in one direction, and at the same time, the rotating seat 3 is driven to rotate. At this time, the raw water insertion port 3.1 is connected to the raw water assembly port 2.1, the purified water insertion port 3.2 is connected to the purified water assembly port 2.2, and the wastewater insertion port 3.3 is connected to the wastewater assembly port 2.3, thereby realizing the assembly of the first ultrafiltration filter element 100 and the second ultrafiltration filter element 200.

[0060] When the first ultrafiltration filter element 100 and the second ultrafiltration filter element 200 are removed, they are driven to rotate in the opposite direction, and at the same time, the rotating seat 3 is rotated. At this time, the raw water insertion port 3.1 is separated from the raw water assembly port 2.1, the purified water insertion port 3.2 is separated from the purified water assembly port 2.2, and the wastewater insertion port 3.3 is separated from the wastewater assembly port 2.3. Then the first ultrafiltration filter element 100 and the second ultrafiltration filter element 200 can be removed from the water circuit board 1.

[0061] A sealing element 4 is provided between the raw water connection port 3.1 and the raw water assembly port 2.1, between the purified water connection port 3.2 and the purified water assembly port 2.2, and between the wastewater connection port 3.3 and the wastewater assembly port 2.3, and they are connected to each other in a sealed manner through the sealing element 4.

[0062] In this embodiment, sealing grooves are respectively provided on the raw water assembly port 2.1, the purified water assembly port 2.2, and the wastewater assembly port 2.3. The sealing element 4 is positioned and assembled on the sealing groove. The bottom surface of the rotating seat 3 is flat and pressed onto the sealing element 4, so that the sealing element 4 will not be displaced when the rotating seat 3 rotates. At the same time, it can also ensure the sealed connection between the raw water insertion port 3.1 and the raw water assembly port 2.1, between the purified water insertion port 3.2 and the purified water assembly port 2.2, and between the wastewater insertion port 3.3 and the wastewater assembly port 2.3.

[0063] The filter element assembly position 2 is annular and has an arc-shaped positioning groove 2.4. The rotating seat 3 is circular and has a positioning shaft 3.4. The first ultrafiltration filter element 100 and the second ultrafiltration filter element 200 are respectively provided with positioning holes 1.4. The positioning shaft 3.4 is inserted into the positioning hole 1.4 and slides along the trajectory of the arc-shaped positioning groove 2.4 when the rotating seat 3 rotates.

[0064] In this embodiment, the rotational linkage between the rotating seat 3 and the first ultrafiltration filter element 100 and the second ultrafiltration filter element 200 is achieved by the insertion between the positioning shaft 3.4 and the positioning hole 1.4. At the same time, the positioning shaft 3.4 is positioned and slid along the trajectory of the arc-shaped positioning groove 2.4 to limit the rotational position of the first ultrafiltration filter element 100, the second ultrafiltration filter element 200, and the rotating seat 3. This also ensures effective communication between the raw water insertion port 3.1 and the raw water assembly port 2.1, between the purified water insertion port 3.2 and the purified water assembly port 2.2, and between the wastewater insertion port 3.3 and the wastewater assembly port 2.3.

[0065] A fixing ring 5 is also provided on the filter element assembly position 2. The fixing ring 5 is fixed on the filter element assembly position 2 by fasteners and pressed on the rotating seat 3. The inner wall of the fixing ring 5 is provided with a groove 5.1. The outer walls of the first ultrafiltration filter element 100 and the second ultrafiltration filter element 200 are respectively provided with buckles 105. When the first ultrafiltration filter element 100 and the second ultrafiltration filter element 200 rotate, the buckles 105 engage or disengage with the groove 5.1.

[0066] In this embodiment, the filter element assembly position 2 is recessed on the top of the water circuit plate 1, the rotating seat 3 is placed on the filter element assembly position 2, and the fixing ring 5 is fixed on the rotating seat 3, and the two form a gap groove. The rotating seat 3 is pressed by the fixing ring 5 and can rotate on the gap groove.

[0067] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A multi-filter interconnection structure, comprising filter elements and a water circuit board (1), characterized in that: The filter element is provided in multiple ways. The water circuit plate (1) is provided with filter element assembly positions (2) for each of the filter elements. The filter element assembly positions (2) are provided with rotating seats (3). The water circuit plate (1) is also provided with raw water channels (1.1), purified water channels (1.2) and wastewater channels (1.3) arranged side by side. The filter elements are respectively rotated and assembled on the filter element assembly positions (2) by the rotating seats (3), and are connected in parallel to each other on the raw water channels (1.1), the purified water channels (1.2) and the wastewater channels (1.3) after assembly. The raw water channels (1.1) are connected to the first solenoid valve (A1) and the third solenoid valve (A3), and the wastewater channels (1.3) are connected to the second solenoid valve (A2) and the fourth solenoid valve (A4).

2. The multi-filter interconnection structure according to claim 1, characterized in that: The raw water channel (1.1), the purified water channel (1.2), and the wastewater channel (1.3) extend linearly along both ends of the water circuit board (1), respectively. The waterway plate (1) has raw water inlets (1.11) at both ends corresponding to the raw water channel (1.1). The water circuit board (1) has water inlets (1.21) at both ends corresponding to the water purification channel (1.2). Wastewater inlets (1.31) are provided at both ends of the water circuit board (1) corresponding to the wastewater channel (1.3).

3. The multi-filter interconnection structure according to claim 2, characterized in that: The first solenoid valve (A1) and the third solenoid valve (A3) are linearly arranged along both ends of the water circuit plate (1) and are respectively connected to two different positions of the raw water channel (1.1). The second solenoid valve (A2) and the fourth solenoid valve (A4) are linearly arranged along both ends of the water circuit plate (1) and are respectively connected to two different positions of the wastewater channel (1.3).

4. The multi-filter interconnection structure according to claim 3, characterized in that: The first solenoid valve (A1) and the second solenoid valve (A2) are located at one end of the bottom of the water circuit board (1), and the third solenoid valve (A3) and the fourth solenoid valve (A4) are located at the other end of the bottom of the water circuit board (1).

5. The multi-filter interconnection structure according to claim 1, characterized in that: The filter element is provided in two parts, namely a first ultrafiltration filter element (100) and a second ultrafiltration filter element (200). The first ultrafiltration filter element (100) and the second ultrafiltration filter element (200) are linearly arranged along both ends of the water channel plate (1). The water channel plate (1) is provided with two filter element assembly positions (2). The two filter element assembly positions (2) are respectively provided with the rotating seat (3). The first ultrafiltration filter element (100) and the second ultrafiltration filter element (200) are located at the top of the water channel plate (1) and are connected in parallel to each other in the raw water channel (1.1), the purified water channel (1.2), and the wastewater channel (1.3) after assembly.

6. The multi-filter interconnection structure according to claim 5, characterized in that: The first ultrafiltration filter element (100) and the second ultrafiltration filter element (200) are respectively provided with a raw water inlet (101), a clean water inlet (102), and a waste water inlet (103). The rotating seat (3) is provided with a raw water insertion connection port (3.1), a clean water insertion connection port (3.2), and a waste water insertion connection port (3.3). The raw water insertion connection port (3.1) is inserted into the raw water inlet (101), the clean water insertion connection port (3.2) is inserted into the clean water inlet (102), and the waste water insertion connection port (3.3) is inserted into the waste water inlet (103).

7. The multi-filter interconnection structure according to claim 6, characterized in that: The filter element assembly position (2) is provided with a raw water assembly port (2.1), a purified water assembly port (2.2), and a wastewater assembly port (2.3). The raw water connector (3.1) is connected to or separated from the raw water assembly port (2.1) when the rotating seat (3) rotates. The water purification connector (3.2) is either connected to or separated from the water purification assembly port (2.2) when the rotating seat (3) rotates. The wastewater connection port (3.3) is connected to or separated from the wastewater assembly port (2.3) when the rotating seat (3) rotates.

8. The multi-filter interconnection structure according to claim 7, characterized in that: A sealing element (4) is provided between the raw water connector (3.1) and the raw water assembly port (2.1), between the purified water connector (3.2) and the purified water assembly port (2.2), and between the wastewater connector (3.3) and the wastewater assembly port (2.3), and they are connected to each other by the sealing element (4).

9. The multi-filter interconnection structure according to claim 7, characterized in that: The filter element assembly position (2) is annular and is provided with an arc-shaped positioning groove (2.4). The rotating seat (3) is circular and is provided with a positioning shaft (3.4). The first ultrafiltration filter element (100) and the second ultrafiltration filter element (200) are respectively provided with positioning holes (1.4). The positioning shaft (3.4) is inserted into the positioning hole (1.4) and slides along the trajectory of the arc-shaped positioning groove (2.4) when the rotating seat (3) rotates.

10. The multi-filter interconnection structure according to claim 9, characterized in that: A fixing ring (5) is also provided on the filter element assembly position (2). The fixing ring (5) is fixed on the filter element assembly position (2) by fasteners and pressed on the rotating seat (3). The inner wall of the fixing ring (5) is provided with a slot (5.1). The outer walls of the first ultrafiltration filter element (100) and the second ultrafiltration filter element (200) are respectively provided with buckles (105). The buckles (105) engage or disengage with the slots (5.1) when the first ultrafiltration filter element (100) and the second ultrafiltration filter element (200) rotate.

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