Integral composite filter cartridge

Abstract

The utility model discloses an integrated composite filter element, is provided with water inlet, clean water and waste water port respectively at the bottom end position of cylinder, and the front filter element is equipped with the top of first lower end cover, and the first water cavity is formed between the front filter element and the inner wall of first lower end cover and cylinder, and the cavity is directly connected with the water inlet of bottom, realizes the preliminary introduction of raw water, and the main filter element is arranged in the inner chamber of front filter element, forms the second water cavity, and the main filter element is equipped with the center pole, and the rear filter element is formed between the inner wall of first lower end cover and the third water cavity in the rear core cylinder, and the rear core cylinder is equipped with the water hole, and the third water cavity is communicated with the water hole and waste water port, and the rear core cylinder is equipped between the center pole and clean water, and through the optimization of internal framework and component layout, the maximum utilization of filter element space is realized in the limited space, not only improves the integration and use efficiency of product, but also effectively reduces the material and production cost.

Description

Technical Field

[0001] This utility model relates to the field of filter element technology, and in particular to an integrated composite filter element. Background Technology

[0002] Currently, there are two main approaches to integrated filter technology in the market. Approach 1 uses a composite filter structure consisting of two filter cartridges. Specifically, the pre-filter and post-filter are separated and combined into one cartridge, while the main filter, responsible for the core filtration function, is a separate cartridge, forming a two-stage filtration system. Approach 2, on the other hand, integrates the pre-filter, main filter, and post-filter into a single cartridge, achieving a highly integrated design. However, this approach typically has four or five holes for the water inlet and outlet, making it more complex than traditional designs. Regardless of the technical approach, both approaches result in a relatively cumbersome water circuit layout within the system, increasing connection points and piping complexity. This not only increases the assembly difficulty of the entire unit but also significantly raises the manufacturing cost of the filter cartridges and the subsequent replacement and maintenance costs. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes an integrated composite filter element, which mainly includes a cylinder, a first lower end cover, a first upper end cover, a pre-filter element, a main filter element, a rear core cylinder, and a rear filter element.

[0004] According to some embodiments of this utility model, a water inlet, a clean water inlet, and a wastewater inlet are respectively provided at the bottom end of the cylinder, and the distribution of these openings has a clear regional division. In the bottom region of the inner cavity of the cylinder, an outer ring plate and an inner ring plate are arranged sequentially from the outside to the inside, and the two are arranged in a concentric circle manner.

[0005] According to some embodiments of this utility model, the water inlet is opened in the outer area of ​​the outer ring plate, the clean water outlet is opened in the inner space of the inner ring plate, and the wastewater outlet is arranged in the annular area between the outer ring plate and the inner ring plate to achieve the separation of different water paths.

[0006] According to some embodiments of this utility model, the first lower end cover is inserted and fixed in the internal space of the outer ring plate, and a first upper end cover is further assembled on top of it. The first upper end cover and the first lower end cover together constitute the mounting base of the pre-filter element. The pre-filter element is installed in the cavity between the first lower end cover and the first upper end cover. The pre-filter element is sealed to the first upper end cover and the first lower end cover by applying glue. At the same time, the pre-filter element, the first lower end cover and the inner wall of the cylinder form a first water passage cavity. This cavity is directly connected to the water inlet at the bottom to realize the initial introduction of raw water.

[0007] According to some embodiments of this utility model, the main filter element is disposed in the inner cavity of the pre-filter element, and a certain gap is maintained between the two to form a second water passage cavity for further distribution and treatment of water flow.

[0008] According to some embodiments of this utility model, a central rod is also installed inside the main filter element. The central rod has multiple through holes along its axial direction from top to bottom to ensure that the water flow can pass through evenly.

[0009] According to some embodiments of the present invention, a rear filter element is installed inside the rear core cylinder. A third water passage cavity is formed between the core cylinder and the inner wall of the first lower end cover, and is connected to the inner cavity of the outer ring plate. The rear core cylinder is provided with a water passage hole, and the third water passage cavity is connected to the water passage hole.

[0010] According to some embodiments of this utility model, the top and bottom ends of the rear core cylinder are respectively provided with an upper insertion tube and a lower insertion tube, wherein the upper insertion tube is inserted into the central rod inside the main filter element, and the lower insertion tube is inserted into the inner ring plate at the bottom of the cylinder, thereby realizing the series connection and sealed connection of the filter units at each level in terms of structure; by optimizing the internal architecture and component layout, the overall structure is more compact and reasonable, thereby maximizing the utilization of the filter element and the whole machine space in a limited space, which not only improves the integration and efficiency of the product, but also effectively reduces material and production costs.

[0011] According to some embodiments of the present invention, the first lower end cover specifically includes two main parts: a first tube and a top ring.

[0012] According to some embodiments of this utility model, the lower end of the first tube is inserted into the inner wall of the outer ring plate for positioning and fixing. To ensure sealing, a sealing ring is fitted at the lower end of the first tube, and the sealing ring is in contact with the inner wall of the outer ring plate.

[0013] According to some embodiments of the present invention, the top ring is located at the top of the first tube and a first groove is formed thereon. The first groove is used to assemble and fix the lower part of the pre-filter element to ensure its installation stability.

[0014] According to some embodiments of the present invention, the composite filter element further includes a first sealing cap structure, which is installed on the top of the pre-filter element and the main filter element to seal and compress, preventing tap water from passing through the pre-filter element and entering the water passage chamber or leaking.

[0015] According to some embodiments of this utility model, the rear core tube part is composed of a second upper end cover and a second lower end cover, and the rear filter element is installed between the two to form the final rear filter unit; the rear filter element is sealed to the second upper end cover and the second lower end cover by applying glue.

[0016] According to some embodiments of this utility model, a fourth water passage cavity is formed between the rear filter element and the second upper end cover for collecting the purified water filtered by the main filter element.

[0017] According to some embodiments of the present invention, an upper insertion tube is integrally formed on the second upper end cover, and a lower insertion tube is correspondingly provided on the second lower end cover, which are used for insertion and engagement with the center rod and the inner ring plate, respectively.

[0018] According to some embodiments of the present invention, the second upper end cover further includes two major components: a second tube and a mounting ring. The second lower end cover is assembled inside the bottom end of the second tube, and the inner cavity of the second tube is connected to the upper insertion tube.

[0019] According to some embodiments of this utility model, a second cover is installed inside the internal space of the second upper cover, and the second cover covers the top of the rear filter element. A certain gap is maintained between the edge of the second upper cover and the inner wall of the second cover to form a water passage gap. According to some embodiments of this utility model, the water filtered by the main filter element enters the interior of the second upper end cover through the upper insertion tube, and then enters the fourth water passage chamber through the water passage gap, avoiding directly bypassing the post filter element.

[0020] According to some embodiments of the present invention, several ribs are arranged on the outer wall of the second cover. These ribs can contact the inner wall of the second cover to improve its structural stability and assist in positioning.

[0021] According to some embodiments of this utility model, the top end of the second tube is further provided with a supporting rib structure for supporting and positioning the upper end of the main filter element. The mounting ring is fitted onto the outside of the second tube, and the two are connected by multiple connecting ribs, each of which has water passage holes to ensure smooth flow of wastewater.

[0022] According to some embodiments of this utility model, a second groove is correspondingly provided on the second lower end cover. This groove is used to install and fix the lower end of the post-filter element, ensuring the sealing and reliable operation of the entire post-filter assembly.

[0023] This utility model has at least the following beneficial effects: At the bottom of the cylinder, there are inlet, clean water outlet, and wastewater outlet, with clearly defined areas. The pre-filter is mounted on top of the first lower end cover, forming a first water passage cavity with the pre-filter, the first lower end cover, and the inner wall of the cylinder. This cavity is directly connected to the inlet at the bottom, allowing for the initial introduction of raw water. The main filter is located within the cavity of the pre-filter, with a gap between them forming a second water passage cavity for further water distribution and treatment. The main filter also contains a central rod with multiple through holes running axially from top to bottom to ensure proper water flow. Uniform flow; a post-filter cartridge is installed inside the post-filter cylinder, forming a third water passage chamber between the cylinder and the inner wall of the first lower end cover. The post-filter cylinder has water passage holes, and the third water passage chamber is connected to the water passage holes and the wastewater outlet. The top of the post-filter cylinder is inserted into the central rod inside the main filter cylinder, and the bottom is inserted into the clean water outlet, thus achieving series connection and sealed connection of each level of filter unit in the structure. By optimizing the internal architecture and component layout, the overall structure is more compact and reasonable, thereby maximizing the utilization of filter cartridge and whole machine space in a limited space. This not only improves the integration and efficiency of the product, but also effectively reduces material and production costs.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The first and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is an overall exploded view of an embodiment of the present utility model; Figure 2 This is a schematic cross-sectional view of an embodiment of the present utility model. Figure 1 ; Figure 3 This is a schematic cross-sectional view of an embodiment of the present utility model. Figure 2 ; Figure 4 This is a schematic diagram of the first lower end cover of an embodiment of the present utility model; Figure 5 This is a schematic diagram of the rear core tube according to an embodiment of the present utility model. Figure 1 ; Figure 6 This is a schematic diagram of the rear core tube according to an embodiment of the present utility model. Figure 2 ; Figure 7 This is a top view of the second upper cover according to an embodiment of the present utility model; Figure 8 for Figure 7 A cross-sectional schematic diagram; Figure 9 This is a schematic diagram of the second lower end cover of an embodiment of the present utility model. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, the meaning of "first" is that "greater than", "less than", "exceeding", etc., are understood to exclude the stated number. If "first" and "second" are used in the description, they are only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0028] For reference Figures 1 to 3 The integrated composite filter element shown mainly includes a cylinder 100, a first lower end cover 200, a pre-filter element 400, a main filter element 500, a rear filter element 600, and a rear filter element 700.

[0029] Specifically, a water inlet 101, a clean water inlet 102, and a wastewater inlet 103 are respectively provided at the bottom of the cylinder 100, and the distribution of these openings has a clear regional division.

[0030] The pre-filter 400 is installed on the top of the first lower end cover 200. At the same time, the pre-filter 400, the first lower end cover 200, and the inner wall of the cylinder 100 form a first water passage cavity 104. This cavity is directly connected to the water inlet 101 at the bottom to realize the initial introduction of raw water.

[0031] The main filter element 500 is located inside the pre-filter element 400, with a certain gap between them forming a second water passage chamber 105 for further distribution and treatment of water flow.

[0032] The main filter element 500 is also equipped with a central rod 510. The central rod 510 has multiple through holes 520 along its axial direction from top to bottom to ensure that the water filtered by the main filter element 500 can enter the central rod 510 through the main filter element 500.

[0033] The post-filter cartridge 600 includes a main body 650, inside which a post-filter cartridge 700 is installed. A third water passage cavity 106 is formed between the main body 650 and the inner wall of the first lower end cover 200. The post-filter cartridge 600 is provided with a water passage hole 601. The third water passage cavity 106 is connected to the water passage hole 601 and the wastewater outlet 103.

[0034] A second cover 800 is installed inside the main cylinder 650. The second cover 800 covers the top of the post-filter 700. A certain gap is maintained between the edge of the second cover 800 and the inner wall of the main cylinder 650 to form a water passage gap 108. The water filtered by the main filter 500 enters the interior of the main cylinder 650 and then enters the fourth water passage chamber 107 through the water passage gap 108, avoiding directly bypassing the post-filter 700.

[0035] The top of the rear filter cartridge 600 is inserted into the central rod 510 inside the main filter cartridge 500, and the lower end is inserted into the water outlet 102, thereby achieving series connection and sealed connection of each level of filter unit in terms of structure. By optimizing the internal architecture and component layout, the overall structure is more compact and reasonable, thereby maximizing the utilization of filter cartridge and whole machine space in a limited space. This not only improves the integration and efficiency of the product, but also effectively reduces material and production costs.

[0036] To further explain the water filtration process, the pre-filter 400 and post-filter 700 use carbon rods, while the main filter 500 uses an RO membrane. The filtration principles of carbon rods and RO membranes are existing technologies and will not be elaborated further. 1. Tap water first enters the first water passage chamber 104 through the water inlet 101. After preliminary filtration by the pre-filter 400, large particulate impurities, sediment and residual chlorine and other pollutants in the water are effectively removed. After preliminary filtration, the water flows into the second water passage chamber 105.

[0037] 2. Water entering the second water passage chamber 105 passes through the main filter element 500 and undergoes a second stage of filtration. Only water molecules and some mineral ions can pass through the main filter element 500 and enter the central rod 510 through the through hole 520. Water containing impurities and heavy metals that fails to pass through the main filter element 500 becomes wastewater. The wastewater enters the third water passage chamber 106 through the water passage hole 601, and is then discharged through the wastewater outlet 103 that communicates with the third water passage chamber 106, ensuring effective separation of wastewater and purified water.

[0038] 3. Water treated by the main filter element 500 enters the central rod 510, then flows from the central rod 510 into the rear filter element cylinder 600, and then enters the fourth water passage chamber 107 through the water passage gap 108. Water flows from the outside to the inside of the rear filter element 700, allowing the rear filter element 700 to perform third-stage filtration, further improving the taste of the water. The water in the core cavity of the rear filter element 700 finally flows through the lower insertion tube 620 inserted into the core cavity of the rear filter element 700 to the clean water outlet 102, from which clean water that can be directly drunk is discharged.

[0039] The water undergoes a third stage of filtration via the post-filter 700, further improving the taste of the water. Finally, the water flows through the lower insertion pipe 620 to the water purifier 102, discharging clean water that is ready for direct consumption.

[0040] Reference Figure 2 , 3 As shown, the bottom area of ​​the inner cavity of the cylinder 100 is provided with an outer ring plate 110 and an inner ring plate 120 arranged from the outside to the inside, and the two are arranged in a concentric circle manner.

[0041] The inlet 101 is located on the outer side of the outer ring plate 110, the clean water outlet 102 is located in the inner space of the inner ring plate 120, and the wastewater outlet 103 is located in the annular area between the outer ring plate 110 and the inner ring plate 120 to achieve the separation of different water paths.

[0042] Reference Figure 2 , 3 As shown in Figure 4, the first lower end cover 200 is inserted and fixed in the internal space of the outer ring plate 110. The first lower end cover 200 specifically includes two main parts: the first tube 210 and the top ring 220.

[0043] The lower end of the first tube 210 is inserted into the outer ring plate 110 for positioning and fixation. To ensure sealing, a sealing ring is fitted at the lower end of the first tube 210, and the sealing ring is in contact with the inner wall of the outer ring plate 110.

[0044] The top ring 220 is located at the top of the first tube 210, and a first groove 221 is formed on it. The first groove 221 is used to assemble and fix the lower part of the pre-filter 400 to ensure its installation stability.

[0045] Reference Figures 1 to 3 As shown, a first upper cover 300 is further assembled above the first lower cover 200. The first upper cover 300 and the first lower cover 200 together form the mounting base of the pre-filter element 400. The pre-filter element 400 is installed in the cavity between the first lower cover 200 and the first upper cover 300. The pre-filter element 400 is sealed to the first upper cover 300 and the first lower cover 200 by applying glue.

[0046] The composite filter element also includes a first cover 900 structure, which is installed on the top of the pre-filter element 400 and the main filter element 500 to seal and compress, preventing tap water from passing over the pre-filter element 400 and entering the water passage chamber or leaking.

[0047] Reference Figure 2 , 5As shown in Figure 8, the main cylinder (650) is composed of a second upper end cover 630 and a second lower end cover 640, and a post-filter element 700 is installed between the two to form the final post-filter unit; the post-filter element 700 is sealed to the second upper end cover 630 and the second lower end cover 640 by applying glue.

[0048] A fourth water passage chamber 107 is also formed between the post filter element 700 and the second upper end cover 630, which is used to collect the purified water after being filtered by the main filter element 500.

[0049] An upper insertion tube 610 is integrally formed on the second upper end cover 630, and a lower insertion tube 620 is correspondingly provided on the second lower end cover 640, which are used for insertion and engagement with the center rod 510 and the inner ring plate 120, respectively.

[0050] The second upper end cover 630 further includes two major components: a second tube section 631 and a mounting ring 632. The second lower end cover 640 is assembled inside the bottom end of the second tube section 631, and the inner cavity of the second tube section 631 is connected to the upper insertion tube 610.

[0051] Several ribs 810 are arranged on the outer wall of the second cover 800. These ribs 810 can contact the inner wall of the second cover 800 to improve its structural stability and assist in positioning.

[0052] The top of the second tube section 631 is also provided with a supporting rib 633 structure, which is used to support and position the upper end of the main filter element 500. The mounting ring 632 is fitted onto the outside of the second tube section 631, and the two are connected by multiple connecting ribs 634. Each of these connecting ribs 634 has a water passage hole 601 to ensure smooth flow of wastewater.

[0053] Reference Figure 9 As shown, a second groove 641 is correspondingly provided on the second lower end cover 640. This groove is used to install and fix the lower end of the post-filter element 700, ensuring the sealing and reliable operation of the entire post-filter assembly.

[0054] To further explain the water filtration process, the pre-filter 400 and post-filter 700 use carbon rods, while the main filter 500 uses an RO membrane. The filtration principles of carbon rods and RO membranes are existing technologies and will not be elaborated further. 1. Tap water first enters the first water passage chamber 104 through the inlet 101. Due to the combined action of the first lower end cover 200 and the outer ring plate 110, the tap water can only pass through the pre-filter 400 for preliminary filtration. After the preliminary filtration, the water flows into the second water passage chamber 105.

[0055] 2. Water entering the second water passage chamber 105 is filtered by the main filter element 500. After passing through the main filter element 500, it undergoes a second stage of filtration. Only water molecules and some mineral ions can pass through the main filter element 500 and enter the central rod 510 through the through hole 520. Water containing impurities and heavy metals that fails to pass through the main filter element 500 becomes wastewater. Due to gravity, the wastewater flows downward and concentrates, and enters the third water passage chamber 106 through the water passage hole 601. The wastewater flows from the third water passage chamber 106 into the space between the outer ring plate 110 and the inner ring plate 120, and is then discharged from the wastewater outlet 103, ensuring effective separation of wastewater and clean water.

[0056] 3. Water treated by the main filter cartridge 500 enters the central rod 510 through the through hole 520, then flows downwards from the central rod 510 into the upper insertion tube 610, and is then guided by the upper insertion tube 610 to the rear filter cartridge 600. It then enters the fourth water passage chamber 107 through the water passage gap 108. Water flows from the outside to the inside of the rear filter cartridge 700, allowing the rear filter cartridge 700 to perform third-stage filtration, further improving the taste of the water. The water in the core cavity of the rear filter cartridge 700 finally flows to the clean water outlet 102 through the lower insertion tube 620 inserted into the core cavity of the rear filter cartridge 700, and is discharged from the clean water outlet 102 as directly drinkable clean water.

[0057] In the description of this specification, references to terms such as "some embodiments" or "as one might imagine" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the first-described terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one embodiment or example.

[0058] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the first described embodiment. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An integrated composite filter element, characterized in that, include: The bottom end of the cylinder (100) is provided with a water inlet (101), a clean water inlet (102), and a waste water inlet (103). The first lower end cap (200) is installed in the lower part of the inner cavity of the cylinder (100); A pre-filter element (400) is installed on the top of the first lower end cover (200). The pre-filter element (400) and the first lower end cover (200) form a first water passage cavity (104) between the pre-filter element (400) and the inner wall of the cylinder (100). The first water passage cavity (104) is connected to the water inlet (101). The main filter element (500) is installed in the inner cavity of the pre-filter element (400), and a second water passage cavity (105) is formed between the main filter element (500) and the pre-filter element (400). The main filter element (500) is equipped with a central rod (510), and the central rod (510) has multiple through holes (520) arranged from top to bottom. The post-filter cartridge (600) includes a main body (650), in which a post-filter cartridge (700) is installed. The top end of the main body (650) is inserted into the central rod (510), and the bottom end of the main body (650) is connected to the water inlet (102). The main cylinder (650) is installed inside the first lower end cover (200). A third water passage cavity (106) is formed between the main cylinder (650) and the inner wall of the first lower end cover (200). The main cylinder (650) is provided with a water passage hole (601). The water passage hole (601) is located below the main filter element (500). The water passage hole (601) and the wastewater outlet (103) are both connected to the third water passage cavity (106). The second cover (800) is installed inside the main cylinder (650) and covers the top of the post-filter (700). The edge of the second cover (800) forms a water passage gap (108) with the inner wall of the main cylinder (650).

2. The integrated composite filter element according to claim 1, characterized in that, The bottom of the inner cavity of the cylinder (100) is provided with an outer ring plate (110) and an inner ring plate (120) from the outside to the inside. The outer ring plate (110) and the inner ring plate (120) are concentrically arranged. The water inlet (101) opens on the outside of the outer ring plate (110), the clean water inlet (102) opens inside the inner ring plate (120), and the waste water inlet (103) opens between the outer ring plate (110) and the inner ring plate (120). The first lower end cover (200) is inserted into the outer ring plate (110), and a first upper end cover (300) is provided above the first lower end cover (200). The pre-filter element (400) is installed between the first lower end cover (200) and the first upper end cover (300).

3. The integrated composite filter element according to claim 2, characterized in that, The first lower end cover (200) includes a first tube (210) and a top ring (220). The lower end of the first tube (210) is inserted into the outer ring plate (110). The top ring (220) is located at the top of the first tube (210). The top ring (220) is provided with a first ring groove (221). The pre-filter (400) is installed in the first ring groove (221).

4. The integrated composite filter element according to claim 1, characterized in that, It also includes a first cover (900), which is mounted on the top of the pre-filter (400) and the main filter (500).

5. The integrated composite filter element according to claim 1, characterized in that, The main cylinder (650) includes a second upper end cover (630) and a second lower end cover (640), and the post-filter element (700) is installed between the second upper end cover (630) and the second lower end cover (640); The rear filter element (700) and the second upper end cover (630) form a fourth water passage cavity (107). The second upper end cover (630) is provided with an upper insertion tube (610), and the second lower end cover (640) is provided with a lower insertion tube (620).

6. The integrated composite filter element according to claim 5, characterized in that, The second upper end cap (630) includes a second tube (631) and a mounting ring (632), and the second lower end cap (640) is inserted into the bottom end of the second tube (631). The upper insertion tube (610) is provided at the top of the second tube (631), and the upper insertion tube (610) communicates with the inner cavity of the second tube (631).

7. The integrated composite filter element according to claim 6, characterized in that, The second tube (631) has a supporting rib (633) at its top end, and the main filter element (500) is placed on the supporting rib (633).

8. The integrated composite filter element according to claim 6, characterized in that, The mounting ring (632) is fitted onto the second pipe section (631), and the mounting ring (632) and the second pipe section (631) are connected by a connecting rib (634), and the connecting rib (634) is provided with the water passage hole (601).

9. The integrated composite filter element according to claim 1, characterized in that, The outer wall of the second cover (800) is provided with ribs (810), and the ribs (810) are in contact with the inner wall of the second cover (800).

10. The integrated composite filter element according to claim 5, characterized in that, The second lower end cap (640) is provided with a second groove (641), and the post-filter (700) is installed in the second groove (641).

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