Composite filter cartridge with flow channel design

Abstract

The utility model provides a composite filter element with runner design, which comprises a filter element shell, a filter element module arranged in the filter element shell, and a filter element outer end cover covering one end of the filter element shell, wherein the filter element outer end cover has a water inlet nozzle extending therefrom, and the filter element shell has a water outlet nozzle extending from the end not covered by the filter element outer end cover; the filter element module comprises a filter material sleeve and a carbon rod, the carbon rod has a water flow passage arranged at the center thereof, the water flow passage has a socket at each end of the carbon rod, and the two ends of the carbon rod are respectively provided with a carbon rod upper end cover and a carbon rod lower end cover which are in plug-in cooperation with the sockets; the carbon rod lower end cover is also used as a connecting part for connecting the carbon rod and the filter material sleeve, and guides the liquid flowing through the carbon rod into the filter material sleeve; and the filter material sleeve is provided with a flow distribution disc which is in communication with the carbon rod lower end cover and allows the liquid to flow into the filter material sleeve from all directions.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to a composite filter with a flow channel design. Background Technology

[0002] Activated carbon filter cartridges are made by mixing functional filter media with activated carbon in a certain proportion and then fusing them into an activated carbon filter cartridge with functional filter media through sintering or extrusion processes.

[0003] Currently, activated carbon filter cartridges obtained by mixing functional filter media with activated carbon have drawbacks, such as...

[0004] 1. The issue of controlling the amount of functional filter media added: adding too little will result in unsatisfactory effects and a lifespan that does not meet market demands; adding too much will prevent the carbon rods from forming and thus fail to create a functional activated carbon filter element.

[0005] 2. Issues regarding the amount of functional filter media added: Users or consumers may not know whether functional filter media has been added to the activated carbon filter cartridge, or how much has actually been added, leading to distrust among users and consumers, which will affect the effectiveness of the activated carbon filter cartridge. Utility Model Content

[0006] This invention aims to overcome the shortcomings of the prior art by providing a composite filter element with a flow channel design to solve the aforementioned problems.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: This composite filter element with a flow channel design includes a filter element shell, a filter element module disposed inside the filter element shell, and a filter element outer end cap covering one end of the filter element shell. The filter element outer end cap has an extended water inlet, and the filter element shell has an extended water outlet at the end not covered by the filter element outer end cap. The filter element module includes a filter media sleeve and a carbon rod. A channel for water to flow through is provided at the center of the carbon rod. The channel has insertion holes at both ends of the carbon rod, and through the insertion holes, the carbon rod has an upper end cap and a lower end cap respectively disposed at both ends of the carbon rod, which are inserted and matched with the insertion holes. The lower end cap of the carbon rod also serves as a connecting component connecting the carbon rod and the filter media sleeve, and guides the liquid flowing through the carbon rod into the filter media sleeve. A distribution plate is provided inside the filter media sleeve, which communicates with the lower end cap of the carbon rod and allows the liquid to flow from all sides into the filter media sleeve.

[0008] Further improvements include the provision of several circumferentially distributed first support ribs on the inner circumferential surface of the inner cavity at one end of the water outlet of the filter element housing. The first support ribs are used to quickly define the final assembly position of the filter media sleeve in the filter element housing and form a liquid collection gap with the water outlet.

[0009] Further improvements include a carbon rod lower end cap comprising a main body and a plug extending from the main body. The plug is inserted into a socket and has a liquid inlet channel. A liquid collection cavity communicating with the liquid inlet channel is formed inside the main body. The inner diameter of the liquid collection cavity is larger than the inner diameter of the liquid inlet channel. A first opening is formed at the end of the main body away from the plug. The first opening directs the liquid entering the liquid collection cavity to the distribution plate. Non-woven fabric is provided at the connection points between the liquid collection cavity and the liquid inlet channel, as well as at the connection points between the liquid collection cavity and the distribution plate.

[0010] Further improvements include a stepped outer surface for the main body, a second opening at one end of the filter media sleeve, and a stepped inner surface for the filter media sleeve at the second opening. The main body enters the filter media sleeve through the second opening, and the stepped configuration of both quickly defines the final assembly position of the carbon rod's lower end cap inside the filter media sleeve.

[0011] Further improvements include the provision of several circumferentially distributed second support ribs on the inner circumferential surface of the filter media sleeve. These second support ribs provide lower support for the distribution plate and can quickly define its final assembly position within the filter media sleeve, which is then defined by the lower end cap of the carbon rod.

[0012] Further improvements include a liquid outlet chamber on the distribution plate. The liquid outlet chamber has several diversion holes distributed circumferentially at one end of the distribution plate and a third opening at the other end. The diversion holes are interconnected with the liquid collection chamber so that the liquid entering the liquid collection chamber can enter the liquid outlet chamber from multiple directions. The third opening allows the liquid entering the liquid outlet chamber to flow into the filter media sleeve.

[0013] Further improvements include a liquid outlet formed at one end of the filter media sleeve that is not the second opening, a plug that communicates with the liquid outlet on the filter media sleeve, and a filter element insert that communicates with the plug being inserted into the plug.

[0014] Further improvements include an extension of the filter media sleeve with an inner cavity at one end of the liquid outlet, and a non-woven fabric located at the liquid outlet is placed inside the inner cavity of the extension.

[0015] The beneficial effects of this utility model are:

[0016] 1. The filter media sleeve and carbon rod of this utility model are independent, and the functional filter media is filled in the filter media sleeve. This allows for selection of the amount to be added as needed, which solves the problem of insufficient filter life caused by insufficient addition of functional filter media in the current manufacturing process. It also makes production more convenient, and users can intuitively know the amount of functional filter media to be added.

[0017] 2. The filter media sleeve of this utility model is provided with multiple non-woven fabrics. The function of the non-woven fabrics is to block the carbon residue on the carbon rod from passing through the filter media sleeve, so as to avoid the "black water" state during the first water flow. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the full cross-section of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the lower end cap of the carbon rod of this utility model;

[0021] Figure 4 This utility model Figure 2 A magnified view of part A in the middle;

[0022] Figure 5 This is a schematic diagram of the structure of the diversion plate of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the filter media sleeve of this utility model. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] Referring to the attached diagram: This composite filter element with a flow channel design includes a filter element housing 1, a filter element module 2 disposed within the filter element housing 1, and a filter element outer end cap 3 covering one end of the filter element housing 1. The filter element outer end cap 3 has an extended water inlet 31. The filter element housing 1 has an extended water outlet 11 at the end where the filter element outer end cap 3 is not covered. The filter element module 2 includes a filter media sleeve 21 and a carbon rod 22. A water flow channel 221 is provided at the central position of the carbon rod 22. 1. Both ends of the carbon rod 22 have insertion holes 2211, and the carbon rod 22 is provided with an upper end cap 4 and a lower end cap 5 at both ends of the carbon rod 22 respectively, which are inserted and matched with the insertion holes 2211. The lower end cap 5 also serves as a connecting part for connecting the carbon rod 22 and the filter media sleeve 21, and guides the liquid flowing through the carbon rod 22 into the filter media sleeve 21. The filter media sleeve 21 is provided with a distribution plate 6 that communicates with the lower end cap 5 of the carbon rod and allows the liquid to flow from all sides into the filter media sleeve 21. The principle of this utility model is that the filter media sleeve 21 and the carbon rod 22 are connected by the lower end cap 5 of the carbon rod. This arrangement makes the filter media sleeve 21 and the carbon rod 22 independent, and the functional filter media is filled inside the filter media sleeve 21. This allows for selection of the amount added as needed, solving the problem of insufficient filter element life due to insufficient addition of functional filter media in the current manufacturing process. It also makes production more convenient, and users can intuitively know the amount of functional filter element added. The carbon rod 22 utilizes its well-developed, interconnected micropore structure to allow liquid to pass through. As the liquid passes through these pores, the pollutants are adsorbed by the pore walls, thereby achieving the purpose of purification. After passing through, the liquid flows into the channel 221 of the carbon rod 22, and the channel 221 forms two insertion holes 2211 on the carbon rod 22. The upper end cap 4 and lower end cap 5 of the carbon rod are inserted and fitted together, and then glued to the carbon rod 22 after insertion. The upper end cap 4 of the carbon rod acts as a seal to prevent the liquid entering the channel 221 from flowing back out. The lower end cap 5 of the carbon rod is ultrasonically welded to the filter media sleeve 21 and is used to allow liquid to pass through the lower end cap 5 into the filter media sleeve 21. The diverter plate 6 is set inside the filter media sleeve 21 and is confined inside the filter media sleeve 21 by the lower end cap 5 of the carbon rod. It communicates and fits with the lower end cap 5 of the carbon rod so that the liquid introduced by the lower end cap 5 of the carbon rod flows into the filter media sleeve 21 from all sides through the diverter plate 6. This increases the flow channel distance and more fully ensures the contact area between the water flow and the functional filter media inside the filter media sleeve 21, maximizing the contact with the functional filter media and thus improving the filtration effect.

[0026] The filter cartridge housing 1 has several circumferentially distributed first support ribs 12 on the inner circumferential surface of the inner cavity at one end of the outlet nozzle 11. The first support ribs 12 are used to quickly define the final assembly position of the filter media sleeve 21 in the filter cartridge housing 1 and form a liquid collection gap 13 between it and the outlet nozzle 11. This arrangement allows the liquid collection gap 13 to be obtained at the same time as determining the final use position of the filter media sleeve 21 in the filter cartridge housing 1. The liquid collection gap 13 allows the liquid flowing out of the filter media sleeve 21 to first converge at the liquid collection gap 13, thereby increasing the smoothness of the liquid when it is discharged from the outlet nozzle 11. The first support ribs 12 also serve as reinforcing ribs, which can increase the structural strength of the lower part of the filter cartridge housing 1.

[0027] The lower end cap 5 of the carbon rod includes a main body 51 and a first plug 52 extending from the main body 51. The first plug 52 is inserted into the socket 2211 and has a liquid inlet channel 521. A liquid collection cavity 511 communicating with the liquid inlet channel 521 is formed inside the main body 51. The inner diameter of the liquid collection cavity 511 is larger than the inner diameter of the liquid inlet channel 521. A first opening 5111 is formed at the end of the main body 51 away from the first plug 52. The first opening 5111 directs the liquid entering the liquid collection cavity 511 to the distribution plate 6. Non-woven fabric 7 is provided at the connection points between the liquid collection cavity 511 and the liquid inlet channel 521, and at the connection points between the liquid collection cavity 511 and the distribution plate 6. The main body 51 is used to form the liquid collection cavity 511, and the distribution plate 6 makes the liquid collection cavity 511 a closed space. The liquid can be gathered in the collection chamber 511, which can meet the diversion requirements of the diversion plate 6. The first plug 52 is used to connect with the socket 2211 to quickly install the lower end cover 5 of the carbon rod 22. The first plug 52 communicates with the channel 221 of the carbon rod 22 through the liquid inlet channel 521, so that the liquid entering the channel 221 can enter the collection chamber 511 through the liquid inlet channel 521. The first opening 5111 allows the liquid entering the collection chamber 511 to leave the collection chamber 511 and enter the diversion structure provided by the diversion plate 6. The non-woven fabric 7 is used to block the carbon residue on the carbon rod from passing through the filter sleeve 21, so as to avoid the "black water" state during the first water flow. The non-woven fabric 7 is fixed to the main body 51 and the diversion plate 6 by welding.

[0028] The outer periphery of the main body 51 has a stepped configuration, and one end of the filter media sleeve 21 has a second opening 211. The inner periphery of the filter media sleeve 21 at the second opening 211 also has a stepped configuration. The main body 51 enters the filter media sleeve 21 through the second opening 211, and the stepped configuration of both quickly defines the final assembly position of the carbon rod lower end cap 5 within the filter media sleeve 21. The outer periphery of the main body 51 has two outer diameter dimensions due to the stepped configuration, and the inner periphery of the filter media sleeve 21 has two inner diameter dimensions due to the stepped configuration. The maximum outer diameter of the stepped configuration of the main body 51 matches the maximum inner diameter of the stepped configuration of the filter media sleeve 21, and the minimum outer diameter of the stepped configuration of the main body 51 matches the maximum inner diameter of the filter media sleeve 21. The minimum inner diameter of the stepped configuration is adapted to the step surface formed between the maximum and minimum outer diameter of the main body 51 as the first positioning surface 512, and the step surface formed between the maximum and minimum inner diameter of the filter sleeve 21 as the second positioning surface 215. In this way, after the main body 51 enters the inner cavity of the filter sleeve 21 through the second opening 211, the first positioning surface 512 and the second positioning surface 215 can be used to quickly define the final assembly position of the carbon rod lower end cover 5 in the filter sleeve 21. At the same time, when the carbon rod lower end cover 5 enters the filter sleeve 21, part of the carbon rod 22 will also enter the filter sleeve 21, which can increase the stability of the carbon rod 22.

[0029] The inner circumferential surface of the filter media sleeve 21 is provided with several circumferentially distributed second support ribs 212. The second support ribs 212 provide lower support for the diverter plate 6 and can quickly define its final assembly position in the filter media sleeve 21. It is defined at this position by the lower end cover 5 of the carbon rod. The second support ribs 212 can be used as reinforcing ribs to increase the structural strength of the filter media sleeve 21. On the other hand, they can provide lower support for the diverter plate 6. After the diverter plate 6 enters the inner cavity of the filter media sleeve 21 through the second opening 211, the positioning surface provided by the second support ribs 212 quickly defines the final assembly position of the diverter plate 6 in the filter media sleeve 21. The diverter plate 6 enters the filter media sleeve 21 before the lower end cover 5 of the carbon rod. In this way, the lower end cover 5 of the carbon rod can also abut against the diverter plate 6 after entering, thereby stably defining the diverter plate 6 in the filter media sleeve 21. In this embodiment, a sealing ring is also provided on the outer circumferential surface of the diverter plate 6. The sealing ring can increase the assembly stability of the diverter plate 6 in the filter media sleeve 21 on the one hand, and achieve a sealed connection on the other hand, so as to prevent liquid from flowing directly into the filter media sleeve 21 through the assembly gap.

[0030] The distribution plate 6 has a liquid outlet chamber 61. At one end of the distribution plate 6, there are several diversion holes 611 distributed circumferentially, and at the other end, a third opening 612 is formed. The diversion holes 611 communicate with the liquid collection chamber 511, allowing liquid entering the liquid collection chamber 511 to enter the liquid outlet chamber 61 from multiple directions. The third opening 612 allows the liquid entering the liquid outlet chamber 61 to flow into the filter media sleeve 21. The distribution plate 6 has a liquid outlet chamber 61, and the liquid in the liquid collection chamber 511 flows through the diversion holes 611. Liquid 1 enters the outlet chamber 61. The outlet chamber 61 is designed to accommodate the distribution of the diversion holes 611, ensuring that each diversion hole 611 is exposed within the outlet chamber 61. The diversion holes 611 allow water to flow from all sides into the filter media sleeve 21, increasing the flow channel distance and ensuring a more sufficient contact area between the water flow and the functional filter media inside the filter media sleeve 21. This maximizes the contact area with the functional filter media, thereby improving the filtration effect. The third opening 612 allows the liquid entering the outlet chamber 61 to enter the filter media sleeve 21.

[0031] The filter media sleeve 21 has a liquid outlet 213 at one end other than the second opening 211. A second plug 2131 communicating with the liquid outlet 213 is provided on the filter media sleeve 21. A filter element insert 21311 communicating with the second plug 2131 is inserted into the second plug 2131. The liquid outlet 213 is used to direct the liquid entering the filter media sleeve 21 to the liquid collection gap 13. In order to further ensure the filtration effect, the filter media sleeve 21 also has a second plug 2131 at the liquid outlet 213. The filter element insert 2131 is connected through the second plug 2131. The filter element insert 21311 can be a PE filter element or a PP filter element. That is, it can be filtered again before the water is discharged to ensure the cleanliness of the liquid and to prevent the functional filter media from accumulating at the liquid outlet 213 and causing blockage and interception. In this embodiment, the filter insert 21311 is an optional mounting component, which is an enhanced filter element. The specific installation method depends on the installation mode of the filter element. That is, when the filter element is installed horizontally, the filter insert 21311 needs to be set. When the filter element is installed vertically, the filter insert 21311 does not need to be set.

[0032] The filter sleeve 21 has an extension 214 with an inner cavity at one end of the outlet 213. The non-woven fabric 7 located at the outlet 213 is provided in the inner cavity of the extension 214. The extension 214 provides an installation space at the lower end of the filter sleeve 21, which allows the non-woven fabric 7 to be placed inside. It also provides a welding surface that can be welded to the non-woven fabric 7. The non-woven fabric 7 is placed there to further block the carbon residue on the carbon rod from passing through the filter sleeve 21, thus avoiding the appearance of "black water" during the first water flow.

[0033] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A composite filter element with a flow channel design, comprising a filter element housing (1), a filter element module (2) disposed within the filter element housing (1), and a filter element outer end cap (3) covering one end of the filter element housing (1), the filter element outer end cap (3) having an extended inlet nozzle (31), and the filter element housing (1) having an extended outlet nozzle (11) at the end not covering the filter element outer end cap (3), characterized in that: The filter module (2) includes a filter media sleeve (21) and a carbon rod (22). A channel (221) for water to flow through is provided at the center of the carbon rod (22). The channel (221) has insertion holes (2211) at both ends of the carbon rod (22). Through the insertion holes (2211), the carbon rod (22) is provided with an upper cap (4) and a lower cap (5) at both ends, which are inserted into the insertion holes (2211). The lower cap (5) also serves as a connecting component for connecting the carbon rod (22) and the filter media sleeve (21), and guides the liquid flowing through the carbon rod (22) into the filter media sleeve (21). The filter media sleeve (21) is provided with a distribution plate (6) that communicates with the lower cap (5) of the carbon rod and allows the liquid to flow from all sides into the filter media sleeve (21).

2. The composite filter element with flow channel design according to claim 1, characterized in that: The filter cartridge housing (1) has a plurality of circumferentially distributed first support ribs (12) on the inner circumferential surface of the inner cavity at one end of the water outlet (11). The first support ribs (12) are used to quickly define the final assembly position of the filter media sleeve (21) in the filter cartridge housing (1) and form a liquid collection gap (13) with the water outlet (11).

3. The composite filter element with flow channel design according to claim 1, characterized in that: The lower end cap (5) of the carbon rod includes a main body (51) and a first plug (52) extending from the main body (51). The first plug (52) is inserted into the socket (2211) and has a liquid inlet channel (521). A liquid collection cavity (511) communicating with the liquid inlet channel (521) is formed in the main body (51). The inner diameter of the liquid collection cavity (511) is larger than the inner diameter of the liquid inlet channel (521). A first opening (5111) is formed at the end of the main body (51) away from the first plug (52). The first opening (5111) directs the liquid entering the liquid collection cavity (511) to the distribution plate (6). Non-woven fabric (7) is provided at the connection between the liquid collection cavity (511) and the liquid inlet channel (521) and the connection between the liquid collection cavity (511) and the distribution plate (6).

4. The composite filter element with flow channel design according to claim 3, characterized in that: The outer peripheral surface of the main body (51) is stepped, and a second opening (211) is formed at one end of the filter sleeve (21). The inner peripheral surface of the filter sleeve (21) at the second opening (211) is also stepped. The main body (51) enters the filter sleeve (21) through the second opening (211), and the stepped configuration of the two quickly defines the final assembly position of the carbon rod lower end cap (5) in the filter sleeve (21).

5. The composite filter element with flow channel design according to claim 4, characterized in that: The inner circumferential surface of the filter sleeve (21) is provided with a plurality of circumferentially distributed second support ribs (212). The second support ribs (212) provide lower support for the diverter plate (6) and can quickly define its final assembly position in the filter sleeve (21), and are defined at that position by the lower end cap (5) of the carbon rod.

6. The composite filter element with flow channel design according to claim 4, characterized in that: The diversion plate (6) has a liquid outlet chamber (61). The liquid outlet chamber (61) has a plurality of diversion holes (611) distributed in the circumferential direction at one end of the diversion plate (6) and a third opening (612) at the other end. The diversion holes (611) are interconnected with the liquid collection chamber (511) so that the liquid entering the liquid collection chamber (511) enters the liquid outlet chamber (61) from multiple directions. The third opening (612) allows the liquid entering the liquid outlet chamber (61) to flow into the filter media sleeve (21).

7. The composite filter element with flow channel design according to claim 4, characterized in that: The filter media sleeve (21) has a liquid outlet (213) at one end that is not the second opening (211). The liquid outlet (213) has a second plug (2131) that communicates with the liquid outlet (213) on the filter media sleeve (21). The second plug (2131) is fitted with a filter element insert (21311) that communicates with the second plug (2131).

8. The composite filter element with flow channel design according to claim 7, characterized in that: The filter sleeve (21) has an extension (214) with an inner cavity at one end of the liquid outlet (213), and the non-woven fabric (7) located at the liquid outlet (213) is disposed in the inner cavity of the extension (214).

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