Carbon rod filter element structure

Abstract

According to the embodiment of the utility model, the carbon rod filter element structure comprises a shell, a carbon rod, a carbon rod and a filter element, wherein the shell is provided with a water inlet and a water outlet; the carbon rod is arranged in the shell, and the outer side face of the carbon rod is covered with a silicon rubber sleeve layer; wherein a sealing structure is arranged between the shell and the silicon rubber sleeve layer of the carbon rod, and the sealing structure is positioned near the water inlet of the shell; water flow entering from the water inlet of the shell flows through the carbon rod in the axial direction and flows through at least half of the length of the carbon rod. The effective filtering path of the filter element can be increased, and the size of the filter element is effectively reduced while the filtering effect is not affected.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a carbon rod filter element structure. Background Technology

[0002] In recent years, drinking water health has received increasing public attention, and more and more families are installing water purification equipment to use purified tap water. Generally, water purification equipment is equipped with carbon rod filter cartridges as filtration devices, whose main function is to adsorb residual chlorine, disinfection byproducts, and organic matter in the water, thereby better ensuring the overall water output effect of the machine.

[0003] However, with the increase in flow rate of high-flow machines, the filtration efficiency of existing carbon rod filter cartridges has become increasingly inadequate. Increasing the size of the filter cartridge to improve filtration would increase costs and would not meet the demand for miniaturized filter cartridges. Utility Model Content

[0004] The main objective of this invention is to provide a carbon rod filter element structure to solve the problem of insufficient filtration efficiency of existing carbon rod filter elements.

[0005] According to an embodiment of this utility model, a carbon rod filter element structure is proposed, comprising: a housing having an inlet and an outlet; a carbon rod disposed within the housing, the outer surface of which is covered with a silicone sleeve; wherein a sealing structure is provided between the housing and the silicone sleeve of the carbon rod, the sealing structure being located near the inlet of the housing; wherein water entering through the inlet of the housing flows axially through the carbon rod and through at least half its length.

[0006] The housing includes a top end, a bottom end, and a sidewall located between the top end and the bottom end.

[0007] The housing has a water inlet and a water outlet; the water inlet is located at its top and the water outlet is located at its bottom; or the water inlet is located at its bottom and the water outlet is located at its top; or the water inlet is located at its top and the water outlet is located at the bottom of its side wall; or the water inlet is located at the bottom of its side wall and the water outlet is located at its top.

[0008] The shell has one inlet and two outlets; the inlet is located at its top, and the two outlets are located at its top and bottom respectively; or the inlet is located in the middle of its side wall, and the two outlets are symmetrically located at the bottom of its side wall.

[0009] The shell has two inlets and one outlet; the two inlets are symmetrically arranged at the bottom of its side wall, and the outlet is arranged at its top; or the two inlets are respectively arranged at its top and bottom, and the outlet is arranged in the middle of its side wall.

[0010] The shell has two inlets and two outlets; the two inlets are respectively located at its top and bottom, and the two outlets are symmetrically located in the middle of its side wall; or the two inlets are located in the middle of its side wall, and the two outlets are respectively located at its top and bottom.

[0011] The carbon rod has an inlet and an outlet. The inlet of the carbon rod is located near the inlet of the shell, and the outlet of the carbon rod is located near the outlet of the shell.

[0012] The sealing structure is located near the water inlet of the housing or the carbon rod.

[0013] The sealing structure is located near the outlet of the shell or the carbon rod.

[0014] The carbon rod has a central hole at its middle position.

[0015] According to the technical solution of this utility model, by changing the structure of the filter element, the filtered water flow path is made to flow through the carbon rod basically along the axial direction of the carbon rod and through at least half the length of the carbon rod. This application can increase the effective filtration path of the filter element, effectively reduce the volume of the filter element without affecting the filtration effect, and make the product layout more reasonable. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1A and 1B This is a schematic diagram of the cross-section of a carbon rod filter element according to an embodiment of the present invention;

[0018] Figure 2A and 2B This is a schematic diagram of the cross-section of a carbon rod filter element according to an embodiment of the present invention;

[0019] Figure 3A and 3B This is a schematic diagram of the cross-section of a carbon rod filter element according to an embodiment of the present invention;

[0020] Figure 4A and 4B This is a schematic diagram of the cross-section of a carbon rod filter element according to an embodiment of the present invention;

[0021] Figure 5A and 5B This is a schematic diagram of the cross-section of a carbon rod filter element according to an embodiment of the present invention;

[0022] Figure 6A and 6B This is a schematic diagram of the cross-section of a carbon rod filter element according to an embodiment of the present invention;

[0023] Figure 7A and 7B This is a schematic diagram of the cross-section of a carbon rod filter element according to an embodiment of the present invention.

[0024] Figure 8A and 8B This is a schematic diagram of the cross-section of a carbon rod filter element according to an embodiment of the present invention;

[0025] Figure 9A and 9B This is a schematic diagram of the cross-section of a carbon rod filter element according to an embodiment of the present invention;

[0026] Figure 10A and 10B This is a schematic diagram of the cross-section of a carbon rod filter element according to an embodiment of the present invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] Although this utility model specification may include various different embodiments, it should be understood that, with regard to some preferred embodiments described in detail in the specification and shown in the accompanying drawings, the contents disclosed in this utility model specification should be regarded as illustrative of the principles of this utility model, and the embodiments shown are not intended to limit the scope of protection of this utility model.

[0029] Existing carbon rod filter cartridges have a water flow path where water flows in from the outside of the carbon rod, radially from the outside to the inside, and then out through the central hole. The effective path is the wall thickness of the carbon rod. With generally increased flow velocities, their filtration performance becomes significantly insufficient. This application modifies the filter cartridge structure so that the water flow path is essentially along the axial length of the filter cartridge. This allows for more thorough contact between the carbon rod and the water flow, enabling the carbon rod to function more fully and evenly. This not only improves filter cartridge efficiency but also reduces the size of the filter cartridge.

[0030] The carbon rod filter element structure provided in this embodiment of the invention can be applied to the filter of a water purification device or system for adsorbing odors, discoloration, organic matter, and some heavy metals in water. The carbon rod filter element structure includes a shell and a carbon rod disposed within the shell. The shell, as the outer casing, is generally cylindrical and includes a top end, a bottom end, and a side wall located between the top and bottom ends. The shell has an inlet and an outlet, which can be respectively located at the top end, bottom end, or side wall. The carbon rod is generally cylindrical and has two end faces and a side surface between the two end faces. The outer surface of the carbon rod is covered with a water-impermeable coating or waterproof layer, including but not limited to a silicone sleeve or waterproof tape. The carbon rod has an inlet and an outlet, with the inlet located near the inlet of the shell and the outlet located near the outlet of the shell. One or two annular sealing structures are provided between the shell and the silicone sleeve of the carbon rod. The water entering through the inlet of the housing flows axially through the carbon rod and for at least half its length. It should be noted that this application does not limit the type of carbon rod filter element; for example, it can be a carbon fiber carbon rod filter element or a granular carbon rod filter element.

[0031] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings. In the drawings, the arrows indicate the direction of water flow.

[0032] In the embodiments shown in Figures 1 (1A and 1B) to 4 (4A and 4B), the housing has an inlet and an outlet. Specifically, the inlet of the housing is located at its top end, and the outlet of the housing is located at its bottom end; or the inlet of the housing is located at its bottom end, and the outlet of the housing is located at its top end; or the inlet of the housing is located at its top end, and the outlet of the housing is located at the bottom of its side wall; or the inlet of the housing is located at the bottom of its side wall, and the outlet of the housing is located at its top end.

[0033] refer to Figure 1AThe inlet 11 of the housing 10 is located at the top of the housing, and the outlet 12 of the housing is located at the bottom of the housing. The carbon rod 20 is housed inside the housing 10, and neither end cap is provided on either end face of the carbon rod; that is, the top face of the carbon rod 20 serves as the inlet 21, and the bottom face as the outlet 22. The outer surface of the carbon rod 20 is covered with a waterproof layer 25. Near the inlet 11 of the housing or near the inlet 21 on the top face of the carbon rod 20, an annular sealing structure 15 is provided between the side wall of the housing 10 and the waterproof layer 25. Due to the presence of the sealing structure 15, water flowing in through the inlet 11 will not flow directly out of the outlet 12 from the gap between the housing 10 and the carbon rod 20. Water enters the housing 10 through inlet 11, flows into the carbon rod 20 through inlet 21 on the top surface, exits the carbon rod through outlet 22 on the bottom surface, and flows out of the filter housing through outlet 12. The filtered water flow path is vertically downward along the axial direction of the carbon rod 20, and the water flow path covers the entire or most of the axial length of the carbon rod 20. (Reference) Figure 1B In some embodiments, the carbon rod 20 may be provided with a central hole 26.

[0034] refer to Figure 2A The inlet 11 of the housing 10 is located at the bottom end of the housing, and the outlet 12 of the housing is located at the top end of the housing. The carbon rod 20 is housed inside the housing 10, and neither end cap is provided on either end face of the carbon rod; that is, the bottom end face of the carbon rod 20 is the inlet 21, and the top end face is the outlet 22. The outer surface of the carbon rod 20 is covered with a waterproof layer 25. Near the inlet 11 of the housing or near the inlet 21 on the bottom end face of the carbon rod 20, an annular sealing structure 15 is provided between the side wall of the housing 10 and the waterproof layer 25. Due to the presence of the sealing structure 15, water flowing in through the inlet 11 will not flow directly out of the outlet 12 from the gap between the housing 10 and the carbon rod 20. Water enters the housing 10 through inlet 11, flows into the carbon rod 20 through inlet 21 on the bottom end face, exits the carbon rod through outlet 22 on the top end face, and flows out of the filter cartridge housing through outlet 12. The filtered water flow path is vertically upward along the axial direction of the carbon rod 20, and the water flow path covers the entire or most of the axial length of the carbon rod 20. (Reference) Figure 1B In some embodiments, the carbon rod 20 may be provided with a central hole 26.

[0035] refer to Figure 3AThe inlet 11 of the housing 10 is located at the top of the housing, and the outlet 12 of the housing is located at the bottom or below the side wall of the housing. A carbon rod 20 is disposed inside the housing 10. The top surface of the carbon rod 20 does not have an end cap, but the bottom surface of the carbon rod 20 has an end cap; that is, the top surface of the carbon rod 20 serves as the inlet 21. An opening is located at the bottom of the side of the carbon rod 20, which serves as the outlet 22, the height of which may be lower than the height of the outlet 12. The outer surface of the carbon rod 20 is covered with a waterproof layer 25. A sealing structure 15 is provided between the side wall of the housing 10 and the waterproof layer 25 near the inlet 11 of the housing 10 or near the inlet 21 of the carbon rod 20. Due to the presence of the sealing structure 15, water flowing in through the inlet 11 will not flow directly out of the outlet 12 from the gap between the housing 10 and the carbon rod 20. Water enters the housing 10 through inlet 11, flows into the carbon rod through inlet 21 on the top surface, exits the carbon rod through outlet 22 at the bottom, and flows out of the filter housing through outlet 12. The filtered water flow path is vertically downward along the axial direction of the carbon rod 20, and the water flow path covers the entire or most of the axial length of the carbon rod 20. (Reference) Figure 3B In some embodiments, the carbon rod 20 may be provided with a central hole 26. Furthermore, in some embodiments, the bottom of the carbon rod 20 may have two symmetrically arranged outlets 22 to improve the filtration efficiency of the carbon rod.

[0036] refer to Figure 4A The inlet 11 of the housing 10 is located at the bottom or below the side wall of the housing, and the outlet 12 of the housing is located at the top of the housing. A carbon rod 20 is disposed inside the housing 10. The top surface of the carbon rod 20 does not have an end cap, but the bottom surface of the carbon rod 20 has an end cap; that is, the top surface of the carbon rod 20 serves as the outlet 22. An opening is located at the bottom of the side of the carbon rod 20, which serves as the inlet 21 of the carbon rod. The height of the inlet 21 may be lower than the height of the inlet 11. The outer surface of the carbon rod 20 is covered with a waterproof layer 25. A sealing structure 15 is provided between the side wall of the housing 10 and the waterproof layer 25 near the inlet 11 of the housing 10 or near the inlet 21 of the carbon rod 20. Due to the presence of the sealing structure 15, water flowing in through the inlet 11 will not flow directly out of the outlet 12 from the gap between the housing 10 and the carbon rod 20. Water enters the housing 10 through inlet 11, flows into the carbon rod through inlet 21 at the bottom, exits the carbon rod through outlet 22 at the top surface, and flows out of the filter cartridge housing through outlet 12. The filtered water flow path is vertically downward along the axial direction of the carbon rod 20, and the water flow path covers the entire or most of the axial length of the carbon rod 20. (Reference) Figure 4B In some embodiments, the carbon rod 20 may be provided with a central hole 26. Furthermore, in some embodiments, the bottom of the carbon rod 20 may have two symmetrically arranged water inlets 21 to improve the filtration efficiency of the carbon rod.

[0037] In the embodiments shown in Figures 5 (5A and 5B) to 6 (6A and 6B), the housing has one inlet and two outlets. Specifically, one inlet of the housing is located at its top, and the two outlets of the housing are located at its top and bottom, respectively; or one inlet of the housing is located in the middle of its side wall, and the two outlets of the housing are symmetrically located at the bottom of its side wall.

[0038] refer to Figure 5A The housing 10 has one inlet 11 located in the middle of its side wall, and two outlets 12 located at its top and bottom. A carbon rod 20 is housed within the housing 10. The top and bottom surfaces of the carbon rod 20 are not end caps, thus serving as outlets 22. Two openings are located opposite each other in the middle of the side of the carbon rod 20, serving as inlets 21. The outer surface of the carbon rod 20 is covered with a waterproof layer 25. A sealing structure 15 is provided between the side wall of the housing 10 and the waterproof layer 25 near the two outlets 12 of the housing or near the two outlets 22 of the carbon rod 20. Due to the sealing structure 15, water flowing in through the inlet 11 will not flow directly out of the outlets 12 from the gap between the housing 10 and the carbon rod 20. Water enters the housing 10 through inlet 11, flows into the carbon rod through inlet 21 in the middle of its side, and exits the carbon rod through outlets 22 on its top and bottom surfaces. The water then flows out of the filter housing through outlet 12. The filtered water flow path is vertically upward or downward along the axial direction of the carbon rod 20, and the flow path covers at least half of the axial length of the carbon rod 20. (Reference) Figure 5B In some embodiments, the carbon rod 20 may be provided with a central hole 26.

[0039] refer to Figure 6AThe housing 10 has one inlet 11 located at its top, and two outlets 12 symmetrically (or oppositely) located at the bottom or below the sidewalls of the housing. A carbon rod 20 is housed within the housing 10. The bottom surface of the carbon rod 20 has an end cap, while the top surface does not; therefore, the top surface serves as the inlet 21. Two openings are located opposite each other at the bottom of the sidewall of the carbon rod 20, serving as outlets 22. The height of outlets 22 may be lower than the height of outlets 12. The outer surface of the carbon rod 20 is covered with a waterproof layer 25. A sealing structure 15 is provided between the sidewall of the housing 10 and the waterproof layer 25, near the inlet 11 of the housing or near the inlet 21 of the carbon rod 20. Due to the sealing structure 15, water flowing in through the inlet 11 will not flow directly out of the outlet 12 from the gap between the housing 10 and the carbon rod 20. Water enters the housing 10 through inlet 11, flows into the carbon rod through inlet 21 on the top surface, exits the carbon rod through outlet 22 at the bottom side, and flows out of the filter cartridge housing through outlet 12. The filtered water flow path is vertically downward along the axial direction of the carbon rod 20, and the water flow path covers the entire or most of the axial length of the carbon rod 20. (Reference) Figure 6B In some embodiments, the carbon rod 20 may be provided with a central hole 26.

[0040] In the embodiments shown in Figures 7 (7A and 7B) to 8 (8A and 8B), the housing has two inlets and one outlet. Specifically, the two inlets of the housing are symmetrically arranged at the bottom of its sidewall, and the outlet of the housing is arranged at its top; or the two inlets of the housing are respectively arranged at its top and bottom, and the outlet of the housing is arranged in the middle of its sidewall.

[0041] refer to Figure 7ATwo inlets 11 of the housing 10 are symmetrically (or oppositely) located at the bottom or below the side wall of the housing, and one outlet 12 of the housing is located at the top of the housing. A carbon rod 20 is disposed inside the housing 10, with two opposite openings at the bottom of its side surface, serving as inlets 21. The height of the inlets 21 may be lower than the height of the inlets 11. An end cap is provided on the bottom surface of the carbon rod 20, but not on the top surface, thus serving as the outlet 22. The outer surface of the carbon rod 20 is covered with a waterproof layer 25. A sealing structure 15 is provided between the side wall of the housing 10 and the waterproof layer 25 near the outlet 12 of the housing or near the outlet 22 of the carbon rod. Due to the sealing structure 15, water flowing in through the inlets 11 will not flow directly out of the outlet 12 from the gap between the housing 10 and the carbon rod 20. Water enters the housing 10 through inlet 11, flows into the carbon rod through inlet 21 at the bottom side of the carbon rod, exits the carbon rod through outlet 22 at the top surface of the carbon rod, and exits the filter cartridge housing through outlet 12. The filtered water flow path is vertically upward along the axial direction of the carbon rod 20, and flows symmetrically (or relatively) along the complete or most of the axial length of the carbon rod 20. (Reference) Figure 7B In some embodiments, the carbon rod 20 may be provided with a central hole 26.

[0042] refer to Figure 8A The shell 10 has two inlets 11 located at its top and bottom, respectively, and one outlet 12 located in the middle of its side wall. A carbon rod 20 is housed inside the shell 10. Neither the top nor bottom surface of the carbon rod 20 has an end cap; therefore, the top and bottom surfaces serve as its inlets 21. Two openings are located opposite each other in the middle of the side of the carbon rod 20, serving as its outlets 22. The outer surface of the carbon rod 20 is covered with a waterproof layer 25. Near the two inlets 11 of the shell or near the two inlets 21 of the carbon rod 20, sealing structures 15 are provided between the side wall of the shell 10 and the waterproof layer 25. Due to the sealing structures 15, water flowing in through the inlets 11 will not flow directly out of the outlet 12 from the gap between the shell 10 and the carbon rod 20. Water enters the housing 10 through inlet 11, flows into the carbon rod through inlets 21 on the top and bottom faces, exits the carbon rod through outlet 22 in the middle of its side, and flows out of the filter housing through outlet 12. The filtered water flow path is vertically upward or downward along the axial direction of the carbon rod 20, and the water flow path covers at least half of the axial length of the carbon rod 20. (Reference) Figure 8B In some embodiments, the carbon rod 20 may be provided with a central hole 26.

[0043] In the embodiments shown in Figures 9 (9A and 9B) to 10 (10A and 10B), the housing has two inlets and two outlets. Specifically, the two inlets of the housing are respectively located at its top and bottom ends, and the two outlets of the housing are symmetrically located in the middle of its sidewalls; or, the two inlets of the housing are located in the middle of its sidewalls, and the two outlets of the housing are respectively located at its top and bottom ends.

[0044] refer to Figure 9A The shell 10 has two inlets 11 located at its top and bottom, respectively, and two outlets 12 located symmetrically or oppositely at the middle of its sidewalls. A carbon rod 20 is housed within the shell 10. Neither the top nor bottom surface of the carbon rod 20 has an end cap; therefore, the top and bottom surfaces serve as its inlets 21. Two openings are located opposite each other at the middle of the sidewall of the carbon rod 20, serving as its outlets 22. The outer surface of the carbon rod 20 is covered with a waterproof layer 25. Near the two inlets 11 of the shell or near the two inlets 21 of the carbon rod, sealing structures 15 are provided between the sidewall of the shell 10 and the waterproof layer 25. Due to the presence of the sealing structures 15, water flowing in through the inlets 11 will not flow directly out of the outlets 12 from the gap between the shell 10 and the carbon rod 20. Water enters the housing 10 through inlet 11, flows into the carbon rod through inlet 21 on the top and / or bottom face, exits the carbon rod through outlet 22 in the middle of its side, and exits the filter housing through outlet 12. The filtered water flow path is vertically upward or downward along the axial direction of the carbon rod 20, and the water flow path covers at least half of the axial length of the carbon rod 20. (Reference) Figure 9B In some embodiments, the carbon rod 20 may be provided with a central hole 26.

[0045] refer to Figure 10AThe shell 10 has two inlets 11 symmetrically or oppositely located in the middle of its side wall, and two outlets 12 located at the top and bottom of the shell, respectively. A carbon rod 20 is housed inside the shell 10, with two openings opposite each other in the middle of its side, serving as inlets 21. The top and bottom surfaces of the carbon rod 20 are not capped, thus serving as outlets 22. The outer surface of the carbon rod 20 is covered with a waterproof layer 25. Near the two outlets 12 of the shell or the two outlets 22 of the carbon rod, sealing structures 15 are provided between the side wall of the shell 10 and the waterproof layer 25. Due to the sealing structures 15, water flowing in through the inlets 11 will not flow directly out of the outlets 12 from the gap between the shell 10 and the carbon rod 20. Water enters the housing 10 through inlet 11, flows into the carbon rod through inlet 21 in the middle of its side, exits the carbon rod through outlets 22 on its top and bottom surfaces, and flows out of the filter cartridge housing through outlet 12. The filtered water flows vertically upwards or downwards along the axial direction of the carbon rod 20, covering at least half of its axial length. (Reference) Figure 10B In some embodiments, the carbon rod 20 may be provided with a central hole 26.

[0046] In the above embodiments, the central hole 26 is filled with a structure that cannot allow water to pass through, including but not limited to a tubular structure with plugs at both ends or sealed at both ends.

[0047] In the above embodiments, the sealing structure 15 includes, but is not limited to, Y-shaped or irregular sealing rings, and this application does not impose any limitations.

[0048] This application conducted experiments on the embodiments. The carbon rod filter cartridge commonly used in current water purification systems was used as the baseline sample, and the filter cartridge designed in this utility model was used as the sample. The flow rate after passing through the carbon rod filter cartridge was compared in the same system. The data is shown in Table 1.

[0049] Table 1

[0050] carbon rod filter element Outer diameter * Inner diameter (mm) Height (mm) Volume (cm3) Flow rate (L / min) Existing filter elements 44*12 270 380 2 The filter element of this application 52*20 80 144.7 2

[0051] Experimental data show that the filter element according to this application has a smaller volume while providing the same flow rate, which facilitates product layout and installation.

[0052] Although this disclosure has been described in detail with reference to specific embodiments thereof, those skilled in the art will understand that various changes and modifications may be made therein without departing from the spirit and scope of the embodiments. Therefore, this application is intended to cover modifications and variations thereof, and any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application shall be included within the scope of the claims of this application and their equivalents.

[0053] Furthermore, features disclosed in the foregoing description, claims, or drawings, expressed in their specific form or according to the manner of performing the disclosed function or the method or process for obtaining the disclosed result, may, as appropriate, be used alone or in any combination of these features to implement this application in their different forms. Specifically, one or more features of any embodiment described in this application may be combined with one or more features of any other embodiment described in this application.

[0054] Protection may also be sought for any feature disclosed in any one or more publications cited in or combined by reference in this application.

Claims

1. A carbon block cartridge structure, characterized by, include: A housing having an inlet and an outlet; A carbon rod is disposed inside the housing, and the outer surface of the carbon rod is covered with a silicone sleeve. A sealing structure is provided between the shell and the silicone sleeve of the carbon rod; The water entering through the inlet of the shell flows axially through the carbon rod and through at least half the length of the carbon rod.

2. The carbon block cartridge structure of claim 1, wherein, The housing includes a top end, a bottom end, and a sidewall located between the top end and the bottom end.

3. The carbon block cartridge structure of claim 2, wherein, The housing has a water inlet and a water outlet; The water inlet of the casing is located at its top, and the water outlet of the casing is located at its bottom; or The water inlet of the casing is located at its bottom end, and the water outlet of the casing is located at its top end; or The water inlet of the casing is located at its top, and the water outlet of the casing is located at the bottom of its side wall; or The water inlet of the shell is located at the bottom of its side wall, and the water outlet of the shell is located at its top.

4. The carbon block cartridge structure of claim 2, wherein The shell has one inlet and two outlets; The water inlet of the shell is located in the middle of its side wall, and the two water outlets of the shell are respectively located at its top and bottom. or The water inlet of the shell is located at its top, and the two water outlets of the shell are symmetrically located at the bottom of its side walls.

5. The carbon block cartridge structure of claim 2, wherein The shell has two inlets and one outlet; The two water inlets of the shell are symmetrically arranged at the bottom of its side wall, and the water outlet of the shell is arranged at its top. or The shell has two water inlets located at its top and bottom, respectively, and the shell has a water outlet located in the middle of its side wall.

6. The carbon block cartridge structure of claim 2, wherein The shell has two inlets and two outlets; The shell has two water inlets located at its top and bottom ends, respectively, and two water outlets symmetrically located in the middle of its side walls; or The two water inlets of the shell are located in the middle of its side wall, and the two water outlets of the shell are located at its top and bottom ends, respectively.

7. The carbon block cartridge structure of claim 1 wherein, The carbon rod has an inlet and an outlet. The inlet of the carbon rod is located near the inlet of the housing, and the outlet of the carbon rod is located near the outlet of the housing.

8. The carbon block cartridge structure of claim 7, wherein, The sealing structure is located near the water inlet of the housing or the carbon rod.

9. The carbon block cartridge structure of claim 7, wherein, The sealing structure is located near the outlet of the housing or the carbon rod.

10. The carbon rod filter element structure according to any one of claims 1 to 9, characterized in that, A central hole is provided in the middle of the carbon rod.

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