Three-in-one filter element

Abstract

The utility model discloses a three-in-one filter element, which belongs to the technical field of water purification and comprises a front filter material, front activated carbon and rear activated carbon, the front filter material is wrapped on the periphery of the front activated carbon, the centers of the rear activated carbon and the front activated carbon are linearly penetrated and are coaxially arranged, a connecting rod is arranged at the end part of the front activated carbon, and the connecting rod is connected with the front activated carbon. The connecting rod is inserted into the center of the rear activated carbon and is provided with a connecting rod front water outlet part and a connecting rod rear water outlet part which are mutually independent; the filtering water paths of the front filtering material and the front activated carbon are communicated with each other, and the front filtering water outlet is realized through the connecting rod front water outlet part; the filtering water path of the rear activated carbon is independent of the filtering water path of the front filtering material and the filtering water path of the front activated carbon, and the filtering water path of the rear activated carbon realizes rear filtering water outlet through the connecting rod rear water outlet part. According to the structure, the front filter material, the front activated carbon and the rear activated carbon are combined into a whole, the size is small, the use and production cost is low, two independent water paths are provided, and the structure can be suitable for a main water path of a filter machine.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, specifically a three-in-one filter element. Background Technology

[0002] Existing RO filters typically have four layers of filtration, meaning they have four filter cartridges. The first stage is a pre-filter, usually made of PP cotton or PP nonwoven fabric, used to block or adsorb coarse particles. The second stage is pre-activated carbon (carbon fiber or granular carbon), generally used to remove chlorine, pigments, etc. from the water. The third stage is an RO reverse osmosis membrane, used to filter heavy metals and other impurities larger than water molecules from the water. The fourth stage is post-activated carbon (carbon fiber or granular carbon), used to improve the taste. Examples include a water purifier filter cartridge structure and its testing system disclosed in Chinese utility model patent CN202311379590.9, and a self-priming pump dual-outlet water purification system disclosed in Chinese utility model patent CN202122691724.3.

[0003] However, the existing RO filters mentioned above have the following problems:

[0004] First, the four different filter elements have different lifespans. In particular, the lifespan of the pre-filter, pre-activated carbon filter, and post-activated carbon filter is different from that of the RO reverse osmosis membrane filter. The replacement time of these filter elements is inconsistent, which requires users to frequently replace the filter elements, affecting the user experience. Improper operation may also damage the machine.

[0005] Second, using a four-stage filter will result in a large overall machine size, which not only occupies a lot of space and wastes space, but also wastes materials due to the replacement of multiple filter elements, thereby increasing the cost of use and production.

[0006] Therefore, further improvements are necessary. Utility Model Content

[0007] The present invention aims to provide a three-in-one filter element to overcome the shortcomings of the prior art.

[0008] A three-in-one filter element designed for this purpose includes a pre-filter media, a pre-activated carbon, and a post-activated carbon. The pre-filter media wraps around the pre-activated carbon. The post-activated carbon and the pre-activated carbon are linearly connected at their centers and coaxially arranged. A connecting rod is provided at the end of the pre-activated carbon. The connecting rod is inserted into the center of the post-activated carbon and has independent connecting rod pre-outlet and connecting rod post-outlet sections.

[0009] The pre-filter material and the pre-activated carbon are connected to each other in the water filtration path, and the pre-filter water is discharged through the connecting rod pre-outlet section.

[0010] The filtration water path of the post-activated carbon is independent of the filtration water path of the pre-filter and the pre-activated carbon. The filtration water path of the post-activated carbon achieves post-filtration water output through the post-outlet of the connecting rod.

[0011] The pre-filter outlet is located outside the post-filter outlet, or the post-filter outlet is located outside the pre-filter outlet.

[0012] The connecting rod runs linearly through the interior and forms the front water outlet of the connecting rod. One end of the rear water outlet of the connecting rod is located inside the connecting rod and is provided with a rear water inlet of the connecting rod. The other end of the rear water outlet of the connecting rod extends away from the connecting rod.

[0013] The front end of the pre-filter media and the pre-activated carbon is provided with a front cover plate. The front cover plate is positioned at the front end of the pre-filter media and the pre-activated carbon, and a front cover plate through hole is provided at its center. The connecting rod extends integrally from the front cover plate through hole and communicates with the front water outlet of the connecting rod.

[0014] The rear end of the activated carbon is provided with a rear end plate, which is positioned at the rear end of the activated carbon and has a rear end plate through hole at its center. The connecting rod is positioned and inserted into the rear end plate through hole and the center of the activated carbon. The rear end plate rests on the front end cover plate.

[0015] The front end of the post-activated carbon is also provided with a post-front plate. The post-front plate is positioned at the front end of the post-activated carbon and has a post-front plate through hole at its center. The connecting rod is sequentially positioned and inserted into the post-rear plate through hole, the center of the post-activated carbon, and the post-front plate through hole.

[0016] The periphery of the post-activated carbon is also provided with a diversion cover, which is provided with a pre-diversion outlet, a post-diversion inlet, a post-diversion outlet, and a snap-fit ​​part. The post-rear end plate is provided with a snap-fit ​​mating part. The diversion cover covers the periphery of the post-front end plate and the post-activated carbon, and is snap-fitted with the snap-fit ​​part through the snap-fit ​​part.

[0017] The pre-diversion outlet is connected to the pre-connecting rod outlet, the post-diversion inlet is connected to the post-activated carbon inlet, and the post-diversion outlet is connected to the post-connecting rod outlet.

[0018] The connecting rod, the rear end plate through hole, and the rear front plate through hole are mutually sealed together, and the diverter cover, the rear end plate, and the rear front plate are mutually sealed together.

[0019] This three-in-one filter element also includes a housing, on which are provided a front water inlet, a front water outlet, a rear water inlet, and a rear water outlet.

[0020] The front water inlet of the outer shell is connected to the water inlet of the pre-filter material, the front water outlet of the outer shell is connected to the front water outlet of the diversion, the rear water inlet of the outer shell is connected to the rear water inlet of the diversion, and the rear water outlet of the outer shell is connected to the rear water outlet of the diversion and / or the rear water outlet of the connecting rod.

[0021] The pre-filter media and the pre-activated carbon are provided with a front-rear cover plate at their rear ends. The front-rear cover plate is positioned at the rear ends of the pre-filter media and the pre-activated carbon. The rear end of the outer shell is also threadedly fixed with a shell cover. A filtration chamber is formed between the shell cover and the outer shell. The pre-filter media, the pre-activated carbon, the post-activated carbon, the connecting rod, the front-front cover plate, the rear-rear end plate, the rear-front end plate, the diversion cover, and the front-rear cover plate are fixed inside the filtration chamber.

[0022] This invention, through structural improvements, encapsulates the pre-filter material around the pre-activated carbon, while simultaneously coaxially arranging the post-activated carbon and pre-activated carbon to form a three-in-one filter element. This not only enhances the functional integration of the filter element but also saves on the production and assembly of multiple filter element shells, reducing the overall size of the filtration machine and saving space and production costs. Furthermore, by adjusting the size ratio of the pre-filter material, pre-activated carbon, and post-activated carbon, the lifespan of all three can be made consistent, allowing users to replace the entire three-in-one filter element during use, thus avoiding frequent filter element replacements and improving the user experience.

[0023] Furthermore, a connecting rod is provided at the end of the pre-activated carbon filter, and the connecting rod is inserted into the center of the post-activated carbon filter, so that the pre-filter material and the pre-activated carbon filter form an interconnected pre-filtration water channel. The post-activated carbon filter is independent of the pre-filtration water channel and forms a post-filtration water channel. The pre-filtration water channel and the post-filtration water channel can be used for water inlet and outlet separately. That is, only one connecting rod is needed to separate the two independent water channels, which can effectively reduce the number of parts and further reduce production costs. Moreover, the inlet and outlet directions of the pre-filtration water channel and the post-filtration water channel can be arbitrarily set according to the total water channel of the filtration machine, making it widely applicable. Attached Figure Description

[0024] Figure 1 This is an exploded structural diagram of an embodiment of the present invention.

[0025] Figure 2 This is an exploded structural diagram from another perspective of an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the assembly structure from another perspective of an embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the assembly cross-sectional structure of an embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the assembly structure of an embodiment of the present utility model.

[0029] Figure 6 This is an exploded structural diagram of the pre-filter media, pre-activated carbon, post-activated carbon, connecting rod, front cover plate, rear end plate, rear front end plate, diversion cover, and front rear cover plate.

[0030] Figure 7 This is an exploded structural diagram from another perspective of the pre-filter media, pre-activated carbon, post-activated carbon, connecting rod, front cover plate, rear end plate, rear front end plate, diversion cover, and front and rear cover plates. Detailed Implementation

[0031] 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.

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] See Figures 1-7 This three-in-one filter element includes a pre-filter media 1, a pre-activated carbon 2, and a post-activated carbon 3. The pre-filter media 1 is wrapped around the pre-activated carbon 2. The post-activated carbon 3 and the pre-activated carbon 2 are linearly connected through each other and are coaxially arranged. The end of the pre-activated carbon 2 is provided with a connecting rod 4. The connecting rod 4 is inserted into the center of the post-activated carbon 3 and is provided with an independent connecting rod pre-outlet 4.1 and a connecting rod post-outlet 4.2.

[0034] The pre-filter media 1 and the pre-activated carbon 2 are connected to each other in the water filtration path, and the pre-filter water is discharged through the connecting rod pre-outlet section 4.1.

[0035] The filtration water path of the post-activated carbon 3 is independent of the filtration water paths of the pre-filter media 1 and the pre-activated carbon 2. The filtration water path of the post-activated carbon 3 achieves post-filtration water output through the post-outlet section 4.2 of the connecting rod.

[0036] In this embodiment, the pre-filter material 1 is wrapped around the pre-activated carbon 2, and the post-activated carbon 3 is coaxially arranged with the pre-activated carbon 2 to form a three-in-one filter element. This not only improves the functional integration of the filter element, but also saves the production and assembly of multiple filter element shells, reducing the overall size of the filtration machine and saving space and production costs. In addition, by adjusting the size ratio of the pre-filter material 1, pre-activated carbon 2, and post-activated carbon 3, the service life of the three can be made the same. That is, the user can replace the entire three-in-one filter element during use, avoiding the problem of frequent filter element replacement and improving the user experience.

[0037] Furthermore, a connecting rod 4 is provided at the end of the pre-activated carbon 2, and the connecting rod 4 is inserted into the center of the post-activated carbon 3, so that the pre-filter material 1 and the pre-activated carbon 2 form an interconnected pre-filtration water channel. The post-activated carbon 3 is independent of the pre-filtration water channel and forms a post-filtration water channel. The pre-filtration water channel and the post-filtration water channel can be used for water inlet and outlet respectively. That is, only one connecting rod 4 is needed to separate the two independent water channels, which can effectively reduce the number of parts and further reduce production costs. Moreover, the inlet and outlet directions of the pre-filtration water channel and the post-filtration water channel can be arbitrarily set according to the total water channel of the filtration machine, which has a wide range of applications.

[0038] The pre-filter outlet is located outside the post-filter outlet, or the post-filter outlet is located outside the pre-filter outlet.

[0039] In this embodiment, the post-filter outlet is the middle outlet, and the pre-filter outlet is the outer outlet, which better suits the overall water circuit structure requirements of the filtration machine.

[0040] Specifically, the connecting rod 4 has a linear passage inside, forming a front water outlet 4.1. One end of the rear water outlet 4.2 is located inside the connecting rod 4 and is provided with a rear water inlet 4.3. The other end of the rear water outlet 4.2 extends away from the connecting rod 4.

[0041] A front cover plate 5 is provided at the front end of the pre-filter media 1 and the pre-activated carbon 2. The front cover plate 5 is positioned at the front end of the pre-filter media 1 and the pre-activated carbon 2, and a front cover plate through hole 5.1 is provided at its center. A connecting rod 4 extends integrally from the front cover plate through hole 5.1 and is interconnected with the front water outlet part 4.1 of the connecting rod.

[0042] In this embodiment, the rear water outlet 4.2 of the connecting rod is a connecting pipe, one end of which extends into the connecting rod 4 and is provided with a rear water inlet 4.3 of the connecting rod. The rear water inlet 4.3 of the connecting rod extends to the outer wall of the connecting rod 4, that is, the rear water inlet 4.3 of the connecting rod and the front water outlet 4.1 of the connecting rod are independent of each other, and the other end of the rear water outlet 4.2 of the connecting rod extends to the outside of the connecting rod 4.

[0043] The rear end plate 6 is provided at the rear end of the post-activated carbon 3. The rear end plate 6 is positioned at the rear end of the post-activated carbon 3 and has a rear end plate through hole 6.1 at its center. The connecting rod 4 is positioned and inserted into the rear end plate through hole 6.1 and the center of the post-activated carbon 3. The rear end plate 6 rests on the front cover plate 5.

[0044] The front end of the post-activated carbon 3 is also provided with a post-front plate 7. The post-front plate 7 is positioned at the front end of the post-activated carbon 3 and has a post-front plate through hole 7.1 at its center. The connecting rod 4 is sequentially positioned and inserted into the post-rear plate through hole 6.1, the center of the post-activated carbon 3, and the post-front plate through hole 7.1.

[0045] In this embodiment, the rear front plate 7 is provided with a rear front plate positioning groove corresponding to the front end of the rear activated carbon 3, and the rear rear plate 6 is provided with a rear rear plate positioning groove corresponding to the rear end of the rear activated carbon 3. The front and rear ends of the rear activated carbon 3 are respectively positioned between the rear front plate positioning groove and the rear rear plate positioning groove, thereby improving the assembly stability of the rear activated carbon 3.

[0046] The periphery of the post-activated carbon 3 is also provided with a diversion cover 8. The diversion cover 8 is provided with a pre-diversion outlet 8.1, a post-diversion inlet 8.2, a post-diversion outlet 8.3, and a snap-fit ​​part 8.4. The post-rear end plate 6 is provided with a snap-fit ​​mating part 6.2. The diversion cover 8 covers the periphery of the post-front end plate 7 and the post-activated carbon 3, and is snap-fitted with the snap-fit ​​mating part 6.2 through the snap-fit ​​part 8.4.

[0047] The pre-spinning outlet 8.1 is connected to the pre-spinning outlet 4.1 of the connecting rod, the post-spinning inlet 8.2 is connected to the inlet of the post-activated carbon 3, and the post-spinning outlet 8.3 is connected to the post-spinning outlet 4.2 of the connecting rod. This allows the pre-filtration water path and the post-filtration water path to be independent of each other and to have separate inlet and outlet.

[0048] The connecting rod 4, the rear end plate through hole 6.1, and the rear front plate through hole 7.1 are mutually sealed and fitted together, and the diverter cover 8, the rear end plate 6, and the rear front plate 7 are mutually sealed and fitted together.

[0049] In this embodiment, sealing elements are respectively provided at the upper and lower positions of the outer wall of the connecting rod 4, and these sealing elements are respectively sealed to the through holes 6.1 of the rear end plate and 7.1 of the rear front end plate. Sealing elements are also provided on the outer walls of the rear end plate 6 and the rear front end plate 7, and these sealing elements are respectively sealed to the inner wall of the diversion cover 8. This prevents leakage of filtered water between the pre-filter and post-filter water paths.

[0050] This three-in-one filter element also includes a housing 9, which is provided with a front water inlet 9.1, a front water outlet 9.2, a rear water inlet 9.3, and a rear water outlet 9.4.

[0051] Among them, the front water inlet 9.1 of the outer shell is connected to the water inlet of the pre-filter 1, the front water outlet 9.2 of the outer shell is connected to the pre-drainage outlet 8.1, the rear water inlet 9.3 of the outer shell is connected to the post-drainage inlet 8.2, and the rear water outlet 9.4 of the outer shell is connected to the post-drainage outlet 8.3 and / or the rear water outlet 4.2 of the connecting rod.

[0052] In this embodiment, the rear water outlet 4.2 of the connecting rod passes through the water outlet 8.3 after the diversion and is directly connected to the rear water outlet 9.4 of the outer casing.

[0053] A front and rear cover plate 10 is provided at the rear end of the pre-filter media 1 and the pre-activated carbon 2. The front and rear cover plate 10 is positioned at the rear end of the pre-filter media 1 and the pre-activated carbon 2. A shell cover 11 is also threadedly fixed at the rear end of the outer shell 9. A filter chamber is formed between the shell cover 11 and the outer shell 9. The pre-filter media 1, the pre-activated carbon 2, the post-activated carbon 3, the connecting rod 4, the front front cover plate 5, the rear rear end plate 6, the rear front end plate 7, the diversion cover 8, and the front and rear cover plate 10 are fixed in the filter chamber.

[0054] In this embodiment, the pre-filter water flow process is as follows: raw water enters the filter chamber through the front inlet 9.1 of the outer shell, and then passes through the pre-filter media 1 and the pre-activated carbon 2 in sequence to form pre-filtered water. The pre-filtered water enters the front outlet 4.1 of the connecting rod through the through hole 5.1 of the front cover plate, and then flows out through the diversion front outlet 8.1 and the front outlet 9.2 of the outer shell in sequence.

[0055] The flow process of the post-filtered water path is as follows: the raw water enters the diversion cover 8 through the connecting rod post-inlet 9.3 and the diversion post-inlet 8.2 in sequence, and then passes through the post-activated carbon 3 to form post-filtered water. The post-filtered water enters the connecting rod post-outlet 4.2 through the connecting rod post-inlet 4.3, and then flows out through the outer shell post-outlet 9.4.

[0056] In this system, the flow directions of the pre-filter and post-filter are as follows: Figure 5 As shown.

[0057] 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 without departing from the spirit and scope of this utility model, 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 three-in-one filter element, comprising pre-filter media (1), pre-activated carbon (2), and post-activated carbon (3), characterized in that: The pre-filter material (1) is wrapped around the pre-activated carbon (2). The center of the post-activated carbon (3) and the pre-activated carbon (2) are linearly connected and coaxially arranged. The end of the pre-activated carbon (2) is provided with a connecting rod (4). The connecting rod (4) is inserted into the center of the post-activated carbon (3) and is provided with an independent connecting rod pre-outlet (4.1) and connecting rod post-outlet (4.2). The pre-filter media (1) and the pre-activated carbon (2) are connected to each other in the water filtration path, and the pre-filter water is discharged through the connecting rod pre-outlet section (4.1); The filtration water path of the post-activated carbon (3) is independent of the filtration water path of the pre-filter (1) and the pre-activated carbon (2). The filtration water path of the post-activated carbon (3) achieves post-filtration water output through the post-outlet section (4.2) of the connecting rod.

2. The three-in-one filter element according to claim 1, characterized in that: The pre-filter outlet is located outside the post-filter outlet, or the post-filter outlet is located outside the pre-filter outlet.

3. The three-in-one filter element according to claim 1, characterized in that: The connecting rod (4) is linearly penetrated inside and forms the front water outlet (4.1) of the connecting rod. One end of the rear water outlet (4.2) of the connecting rod is located inside the connecting rod (4) and is provided with a rear water inlet (4.3) of the connecting rod. The other end of the rear water outlet (4.2) of the connecting rod extends away from the connecting rod (4).

4. The three-in-one filter element according to claim 3, characterized in that: A front cover plate (5) is provided at the front end of the pre-filter material (1) and the pre-activated carbon (2). The front cover plate (5) is positioned at the front end of the pre-filter material (1) and the pre-activated carbon (2), and a front cover plate through hole (5.1) is provided at its center. The connecting rod (4) extends integrally from the front cover plate through hole (5.1) and is interconnected with the front water outlet part (4.1) of the connecting rod.

5. The three-in-one filter element according to claim 4, characterized in that: The rear end plate (6) is provided at the rear end of the post-activated carbon (3). The rear end plate (6) is positioned at the rear end of the post-activated carbon (3) and has a rear end plate through hole (6.1) at its center. The connecting rod (4) is positioned and inserted at the rear end plate through hole (6.1) and the center of the post-activated carbon (3). The rear end plate (6) rests on the front cover plate (5).

6. The three-in-one filter element according to claim 5, characterized in that: The front end of the post-activated carbon (3) is also provided with a post-front plate (7). The post-front plate (7) is positioned at the front end of the post-activated carbon (3) and has a post-front plate through hole (7.1) at its center. The connecting rod (4) is sequentially positioned and inserted into the post-rear plate through hole (6.1), the center of the post-activated carbon (3), and the post-front plate through hole (7.1).

7. The three-in-one filter element according to claim 6, characterized in that: The post-activated carbon (3) is also provided with a diversion cover (8), which is provided with a diversion front outlet (8.1), a diversion rear inlet (8.2), a diversion rear outlet (8.3), and a snap-fit ​​part (8.4). The post-rear end plate (6) is provided with a snap-fit ​​part (6.2). The diversion cover (8) covers the periphery of the post-front end plate (7) and the post-activated carbon (3) and is snap-fitted with the snap-fit ​​part (6.2) through the snap-fit ​​part (8.4). The pre-diversion outlet (8.1) is connected to the pre-connecting rod outlet (4.1), the post-diversion inlet (8.2) is connected to the inlet of the post-activated carbon (3), and the post-diversion outlet (8.3) is connected to the post-connecting rod outlet (4.2).

8. The three-in-one filter element according to claim 7, characterized in that: The connecting rod (4), the rear end plate through hole (6.1), and the rear front plate through hole (7.1) are mutually sealed and fitted together, and the diverter cover (8), the rear end plate (6), and the rear front plate (7) are mutually sealed and fitted together.

9. The three-in-one filter element according to claim 7, characterized in that: It also includes a housing (9), which is provided with a front water inlet (9.1), a front water outlet (9.2), a rear water inlet (9.3), and a rear water outlet (9.4). The front water inlet (9.1) of the outer shell is connected to the water inlet of the pre-filter media (1), the front water outlet (9.2) of the outer shell is connected to the pre-drainage outlet (8.1), the rear water inlet (9.3) of the outer shell is connected to the post-drainage inlet (8.2), and the rear water outlet (9.4) of the outer shell is connected to the post-drainage outlet (8.3) and / or the rear water outlet of the connecting rod (4.2).

10. The three-in-one filter element according to claim 9, characterized in that: The pre-filter material (1) and the pre-activated carbon (2) are provided with a front rear cover plate (10). The front rear cover plate (10) is positioned at the rear end of the pre-filter material (1) and the pre-activated carbon (2). The rear end of the outer shell (9) is also threaded with a shell cover (11). A filter chamber is formed between the shell cover (11) and the outer shell (9). The pre-filter material (1), the pre-activated carbon (2), the post-activated carbon (3), the connecting rod (4), the front front cover plate (5), the rear rear end plate (6), the rear front end plate (7), the diversion cover (8), and the front rear cover plate (10) are fixed in the filter chamber.

Images