A water treatment cartridge

Abstract

The utility model provides a water treatment filter element, include: tubular main part, its lateral wall is equipped with interlayer structure, water treatment medium fills in interlayer structure, center flow channel is formed by the inner wall of tubular main part, water inlet channel sets up on the tubular main part of interlayer structure's outside, water outlet channel communicates with the both ends of center flow channel, wherein, the liquid to be treated is discharged from water outlet channel after tubular main part water inlet channel, water treatment medium in interlayer structure and center flow channel in proper order, through the interlayer structure and center flow channel cooperation of innovation, keep low pressure loss at the same time, make water treatment medium contact time promote, and solve structural fragility problem through the mechanical support of tubular main part.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically to a water treatment filter. Background Technology

[0002] Traditional water treatment filter cartridges have the following main technical limitations:

[0003] 1. Defects in unidirectional flow channel design: Most filter cartridges use a single-layer filtration structure (such as PP cotton, activated carbon rods), which results in a short water flow path and insufficient contact time, leading to a low pollutant retention rate (especially micron-sized particles and dissolved organic matter).

[0004] 2. Low media utilization rate: The media distribution of packed filter cartridges is uneven, the central area is prone to clogging while the edge areas do not participate fully in filtration, resulting in material waste (industry statistics show that the effective media utilization rate is less than 60%).

[0005] 3. Structural strength issues: Existing composite filter cartridges achieve multi-functional filtration by bonding multiple layers of filter media, but the interlayer interfaces are prone to cracking under high pressure (common in conditions >0.6MPa), leading to the risk of water leakage.

[0006] To address the aforementioned issues, while the spiral flow channel filter element proposed in the existing technology extends the contact time, it leads to an increase in pressure loss of more than 35%; although the hollow fiber bundle design used in the existing technology increases the specific surface area, it causes secondary pollution due to fiber breakage.

[0007] The above background information is provided only to assist in understanding the utility model concept and technical solution of this utility model. It does not necessarily belong to the prior art of this patent application, nor does it necessarily provide technical teaching. In the absence of clear evidence that the above information was disclosed before the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0008] To address the technical problems of existing technologies, such as the design defects of unidirectional flow channels, low media utilization, and structural strength issues, this utility model proposes a water treatment filter element. Through the synergistic effect of an innovative sandwich structure and a central flow channel, it increases the contact time of the water treatment media while maintaining low pressure loss, and solves the problem of structural fragility through the mechanical support of the tubular main body.

[0009] To achieve the above objectives, the technical solution of this utility model is as follows:

[0010] On the one hand, this utility model provides a water treatment filter element, comprising:

[0011] The tubular main body has a sandwich structure on its side walls;

[0012] A water treatment medium, which is filled within the sandwich structure;

[0013] The central flow channel is formed by the inner wall of the tubular body;

[0014] A water inlet channel is provided on the tubular main body sidewall outside the sandwich structure;

[0015] The water outlet channel is connected to both ends of the central flow channel; wherein, the liquid to be treated passes sequentially through the tubular main water inlet channel, the water treatment medium in the sandwich structure and the central flow channel and is then discharged from the water outlet channel.

[0016] This invention proposes a water treatment filter element that, through the synergistic effect of an innovative sandwich structure and a central flow channel, increases the contact time of the water treatment medium while maintaining low pressure loss, and solves the problem of structural fragility through the mechanical support of the tubular main body.

[0017] As a preferred technical solution, the sandwich structure is an annular cavity, and the water inlet channel includes multiple micropores disposed on the outer wall of the tubular body.

[0018] As a preferred technical solution, the radial cross-sectional area of ​​the central flow channel is smaller than the radial cross-sectional area of ​​the sandwich structure.

[0019] As a preferred technical solution, the tubular body is provided with detachable end caps at both ends.

[0020] As a preferred technical solution, the end cap includes: an end cap end face, the contact surface between the end cap end face and the end of the tubular body is provided with a concave-convex structure, and the protrusion of the concave-convex structure is in close contact with the end of the tubular body.

[0021] As a preferred technical solution, the end cap is provided with a snap-fit ​​portion on the outer circumference of its end face, and the end cap is snapped into the tubular body through the snap-fit ​​portion.

[0022] As a preferred technical solution, the end cap face protrudes towards the inner cavity of the tubular body to form a flow channel, and the end cap face protrudes away from the inner cavity of the tubular body to form an annular member, the radial cross-sectional area of ​​the annular member being larger than the cross-sectional area of ​​the flow channel.

[0023] As a preferred technical solution, the end cap includes: a first end cap and a second end cap, wherein the water outlet channel at one end of the tubular body cavity is connected to the cavity of the first end cap through a guide channel, and the water outlet channel at the other end of the tubular body cavity is connected to the cavity of the second end cap through a guide channel.

[0024] As a preferred technical solution, the radial cross-sectional area of ​​the flow guiding channel is smaller than the radial cross-sectional area of ​​the central flow channel.

[0025] As a preferred technical solution, the water treatment medium comprises metallic copper particles or copper alloy particles, having an active surface that reacts with hydrogen sulfide, and the filling rate of the metallic copper particles or copper alloy particles in the sandwich structure is >90 vol.

[0026] The water treatment filter element provided by this utility model has the following beneficial effects:

[0027] 1) The water treatment filter element provided by this utility model, through the synergistic effect of the innovative sandwich structure and the central flow channel, increases the contact time of the water treatment medium while maintaining low pressure loss, and solves the problem of structural fragility through the mechanical support of the tubular body.

[0028] 2) The water treatment filter element provided by this utility model allows water to flow radially through the water treatment medium in the sandwich structure from the water inlet channel. Compared with the traditional axial flow, the diffusion distance is shortened but the contact area is increased (circumferential expansion effect of sandwich structure), which improves the contact time of the water treatment medium.

[0029] The water flow generates microturbulence through the porous medium of the tubular main body, which increases the probability of pollutant collision and improves the removal rate of harmful substances and pollutants in the water.

[0030] The tubular body's two end outlet channels create pressure balance, preventing flow deviation caused by unilateral water outlet (solving the vortex defect of threaded filter elements) and reducing pressure loss in the central flow channel.

[0031] The sandwich structure and the central flow channel form a "sandwich" load-bearing frame with a burst pressure of >1.2MPa, which disperses the stress. The mechanical reinforcement of the tubular body extends the service life of the water treatment filter element. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a water treatment filter element provided by this utility model;

[0033] Figure 2 A structural schematic diagram of a water treatment filter element provided by this utility model from another perspective;

[0034] Figure 3 A structural schematic diagram of a water treatment filter element provided by this utility model from another perspective;

[0035] Figure 4 A top view of a water treatment filter element provided by this utility model;

[0036] Figure 5 for Figure 4 A sectional view along the AA direction;

[0037] Among them, 1-tubular body; 2-layer structure; 3-water treatment medium; 4-central flow channel; 5-outlet channel; 6-end cap; 61-first end cap; 62-second end cap; 7-end cap end face; 8-concave-convex structure; 9-protrusion; 10-clamping part; 11-flow guide channel; 12-ring-shaped component. Detailed Implementation

[0038] The preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0039] like Figure 1-5 As shown, this utility model provides a water treatment filter element, comprising:

[0040] A tubular main body 1, with a sandwich structure 2 on its side wall;

[0041] Water treatment medium 3 is filled within the sandwich structure 2;

[0042] The central flow channel 4 is formed by the inner wall of the tubular body 1;

[0043] A water inlet channel (not shown) is provided on the side wall of the tubular main body 1 outside the sandwich structure 2;

[0044] The water outlet channel 5 is connected to both ends of the central flow channel 4; wherein, the liquid to be treated passes sequentially through the water inlet channel (not shown) of the tubular main body 1, the water treatment medium 3 in the sandwich structure 2 and the central flow channel 4 and is then discharged from the water outlet channel.

[0045] This invention proposes a water treatment filter element that, through the synergistic effect of an innovative sandwich structure and a central flow channel, increases the contact time of the water treatment medium while maintaining low pressure loss, and solves the problem of structural fragility through the mechanical support of the tubular main body.

[0046] Preferably, such as Figure 5As shown, the sandwich structure 2 is an annular cavity, and the water inlet channel (not shown) includes multiple micropores (not shown) disposed on the outer wall of the tubular body 1. The micropores of the water inlet channel on the side wall of the tubular body 1 disperse the incoming water into multiple fine streams, and the water flow is uniformly diffused circumferentially within the annular cavity of the sandwich structure 2 through multiple micropores, avoiding the local media scouring or blockage phenomenon caused by traditional single-point water inlet. The tubular body 1 is preferably an activated carbon rod. The activated carbon rod itself acts as a porous medium, adsorbing and removing dissolved organic matter and odor molecules through the pores. At the same time, the tubular structure forms a physical filtration barrier to intercept particles ≥5μm. The geometric design of the annular cavity allows the water flow to penetrate radially. When the water treatment medium passes through the sandwich structure 2, a mixed flow state of laminar and microturbulent flow is formed. Compared with the traditional axial flow channel, the effective contact time between harmful substances and pollutants in the water and the water treatment medium 3 is significantly extended. The annular cavity of the sandwich structure 3 and the central flow channel 4 form an "outward expansion-inward contraction" dual-channel pressure compensation system. The measured burst pressure is >1.5MPa, and the structural reinforcement and stability are improved. This design achieves high pressure tolerance and low pressure loss characteristics through the synergistic effect of micropores on the outer wall of the tubular body 1 for discrete water intake, adsorption and filtration of harmful substances by the annular cavity of the sandwich structure 3, and confluence of the central flow channel 4. At the same time, it achieves synergistic optimization of filtration efficiency and media life.

[0047] Preferably, such as Figure 5 As shown, the radial cross-sectional area of ​​the central flow channel 4 is smaller than that of the sandwich structure 2. The reduction in the cross-sectional area of ​​the central flow channel 4 forms a fluid acceleration zone, which forms a velocity gradient with the low-velocity permeation zone of the sandwich structure 2, significantly reducing pressure loss. The difference in cross-sectional area establishes a dynamic pressure balance between the sandwich structure 2 and the central flow channel 4, suppressing flow deviation through the radial flow channel and achieving circumferential uniform flow. The shrinkage of the cross-sectional area induces a fluid shear effect, forming microscale turbulence in the pores of the water treatment medium 3 in the sandwich structure 2, breaking the boundary layer limitation, and improving the removal rate of harmful substances in the water.

[0048] Preferably, such as Figure 1-5 As shown, the tubular body 1 has detachable end caps 6 at both ends. The end caps 6 facilitate the connection between the water treatment filter element and the filtration equipment (not shown).

[0049] Preferably, such as Figure 5 As shown, the end cap 6 includes: an end cap face 7, the contact surface of the end cap face 7 with the end of the tubular body 1 is provided with a concave-convex structure 8, and the protrusion 9 of the concave-convex structure 8 is in close contact with the end of the tubular body 1.

[0050] The concave-convex structure 8 decomposes the axial clamping force into a stepped distributed load, which reduces the stress deviation at the end face of the tubular body 1 and avoids the risk of local rupture.

[0051] The protrusion 9 of the concave-convex structure 8 forms a local high-pressure contact area with the end face of the tubular body 1, effectively blocking the fluid flow path and significantly reducing the leakage rate.

[0052] Preferably, such as Figure 5 As shown, the end cap 6 has a snap-fit ​​part 10 on its outer circumference at the end face 7, and the end cap 6 is snapped into the tubular body 1 through the snap-fit ​​part 10; the snap-fit ​​part 10 and the outer wall of the tubular body 1 form an interference fit, which effectively blocks the flow channel of untreated water along the gap of the pipe wall, thereby improving the filtration efficiency; the snap-fit ​​part 10 and the side wall of the tubular body 1 are reserved with deformation allowance, which can absorb the volume change caused by the expansion of the tubular body 1 due to water absorption, and avoid sealing failure due to expansion.

[0053] Preferably, such as Figure 5 As shown, the end cap end face 7 protrudes towards the inner cavity of the tubular body 1 to form a flow channel 11, and the end cap end face 7 protrudes away from the inner cavity of the tubular body 1 to form an annular member 12. The radial cross-sectional area of ​​the annular member 12 is larger than the radial cross-sectional area of ​​the flow channel 11.

[0054] The protrusions facing the tubular body 1 form a gradually narrowing guide channel 11, which increases the water flow velocity and enhances the flushing efficiency of pollutants in the pores of the tubular body 1 inlet channel.

[0055] The cross-sectional area of ​​the annular component 12, which is far from the tubular body 1, is enlarged to form a buffer cavity, which can reduce the amplitude of flow velocity fluctuations, avoid the impact of water flow pulsation on the tubular body 1, reduce the risk of axial crushing of the tubular body 1, and extend the service life of the tubular body 1.

[0056] The difference in cross-sectional area between the flow channel 11 and the annular component 12 creates a stepped pressure difference, which improves the uniformity of axial pressure distribution in the tubular body 1 and avoids filtration blind spots caused by local permeation rate differences.

[0057] Preferably, such as Figure 1-5 As shown, the end cap 6 includes: a first end cap 61 and a second end cap 62. The water outlet channel 5 at one end of the inner cavity of the tubular body 1 is connected to the inner cavity of the first end cap 61 through a guide channel 11, and the water outlet channel 5 at the other end of the inner cavity of the tubular body 1 is connected to the inner cavity of the second end cap 62 through a guide channel 11.

[0058] The symmetrical flow guiding channels 11 of the first end cap 61 and the second end cap 62 form a bidirectional flow path, which reduces the flow velocity deviation rate inside the tubular body 1 and the turbulent kinetic energy, thus avoiding wear of the tubular body 1 caused by local scouring.

[0059] The flow channels 11 at both ends form a stepped pressure difference, which improves the uniformity of axial pressure distribution and ensures that the porosity utilization of the water inlet channel (not shown) on the side wall of the tubular body 1 is maximized.

[0060] Preferably, such as Figure 5 As shown, the radial cross-sectional area of ​​the flow guide channel 11 is smaller than the cross-sectional area of ​​the central flow channel 4;

[0061] The reduction in cross-sectional area creates a Venturi effect, which increases the flow velocity. The increased flow velocity creates a local vacuum, promoting the penetration and adsorption of harmful substances and pollutants in the water into the pores of the inlet channel on the side wall of the tubular body 1. The pressure gradient formed by the difference in cross-sectional area compensates for the friction loss of the tubular body 1, reducing the axial pressure difference of the tubular body 1 and preventing local penetration failure.

[0062] Preferably, such as Figure 5 As shown, the water treatment medium 3 contains metallic copper particles or copper alloy particles, has an active surface that reacts with hydrogen sulfide, and the filling rate of the metallic copper particles or copper alloy particles in the sandwich structure is >90 vol%.

[0063] An electrochemical reaction occurs between the surface of copper particles and hydrogen sulfide:

[0064] Cu + H₂S → CuS + H₂↑

[0065] Hydrogen sulfide removal rate can reach 98%, and the reaction product copper sulfide forms a stable precipitate;

[0066] Electrochemically active sites are formed at the micrograin boundaries of the copper alloy, increasing the H2S decomposition rate to 5.7 g / (m²). 2 ·h);

[0067] With a filling rate of >90 vol%, three layers of dense particulate water treatment media are formed. The shear force of the water flow continuously exposes the fresh copper surface, keeping the reactivity at >85% of the initial value, thus improving the ability to continuously remove H2S from the water.

[0068] The filling density of the copper particles or copper alloy particles >90 vol% results in a porosity of <8% for the three layers of the water treatment medium, reducing water flow impact deformation by 72% and achieving a dynamic balance between filtration accuracy and operating costs.

[0069] like Figure 1-5As shown, this utility model provides a water treatment filter element, comprising: a tubular body 1 with a sandwich structure 2 on its side wall; a water treatment medium 3 filled within the sandwich structure 2; a central flow channel 4 formed by the inner wall of the tubular body 1; an inlet channel (not shown) disposed on the side wall of the tubular body 1 outside the sandwich structure 2; and an outlet channel 5 connected to both ends of the central flow channel 4; wherein the liquid to be treated sequentially passes through the inlet channel (not shown) of the tubular body 1, the water treatment medium 3 within the sandwich structure 2, and the central flow channel 4 before exiting through the outlet channel. 5. Discharge; the sandwich structure 2 is an annular cavity, and the water inlet channel (not shown) includes multiple micropores disposed on the outer wall of the tubular body 1; the radial cross-sectional area of ​​the central flow channel 4 is smaller than the radial cross-sectional area of ​​the sandwich structure 2; the tubular body 1 is provided with detachable end caps 6 at both ends; the end cap 6 includes: an end cap face 7, the contact surface between the end cap face 7 and the end of the tubular body 1 is provided with a concave-convex structure 8, the protrusion 9 of the concave-convex structure 8 is in close contact with the end of the tubular body 1; the end cap face 7 is provided with a snap-fit ​​portion 10 on its outer circumference, the... End cap 6 is snapped into the tubular body 1 via the snap-fit ​​part 10; the end face 7 of the end cap protrudes towards the inner cavity of the tubular body 1 to form a flow channel 11, and the end face of the end cap protrudes away from the inner cavity of the tubular body 1 to form an annular member 12, the radial cross-sectional area of ​​the annular member 12 being larger than the cross-sectional area of ​​the flow channel 11; the end cap 6 includes: a first end cap 61 and a second end cap 62, the water outlet channel 5 at one end of the inner cavity of the tubular body 1 is connected to the inner cavity of the first end cap 61 via the flow channel 11, and the tubular body 1 The water outlet channel 5 at the other end of the inner cavity is connected to the inner cavity of the second end cover 62 through the flow guide channel 11; the radial cross-sectional area of ​​the flow guide channel 11 is smaller than the cross-sectional area of ​​the central flow channel 4; the water treatment medium 3 is metallic copper particles with an active surface that reacts with hydrogen sulfide, and the filling rate of the metallic copper particles in the sandwich structure is >90 vol%; this structure, through the synergistic effect of the innovative sandwich structure and the central flow channel, increases the contact time of the water treatment medium while maintaining low pressure loss, and solves the problem of structural fragility through the mechanical support of the tubular body.

[0070] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are protected by this utility model.

Claims

1. A water treatment filter element, characterized in that, include: The tubular main body has a sandwich structure on its side walls; A water treatment medium, which is filled within the sandwich structure; The central flow channel is formed by the inner wall of the tubular body; A water inlet channel is provided on the tubular main body sidewall outside the sandwich structure; The water outlet channel is connected to both ends of the central flow channel; wherein, the liquid to be treated passes sequentially through the tubular main water inlet channel, the water treatment medium in the sandwich structure and the central flow channel and is then discharged from the water outlet channel.

2. The water treatment filter element according to claim 1, characterized in that, The sandwich structure is an annular cavity, and the water inlet channel includes multiple micropores disposed on the outer wall of the tubular body.

3. The water treatment filter element according to claim 1, characterized in that, The radial cross-sectional area of ​​the central flow channel is smaller than the radial cross-sectional area of ​​the sandwich structure.

4. The water treatment filter element according to claim 1, characterized in that, The tubular body is provided with detachable end caps at both ends.

5. The water treatment filter element according to claim 4, characterized in that, The end cap includes an end cap face, and the contact surface between the end cap face and the end of the tubular body is provided with a concave-convex structure, wherein the protrusion of the concave-convex structure is in close contact with the end of the tubular body.

6. The water treatment filter element according to claim 5, characterized in that, The end cap has a snap-fit ​​portion on its outer circumference, and the end cap is snapped into the tubular body through the snap-fit ​​portion.

7. The water treatment filter element according to claim 5, characterized in that, The end cap face protrudes towards the tubular body to form a flow channel, and the end cap face protrudes away from the tubular body to form an annular member, the radial cross-sectional area of ​​the annular member being larger than the cross-sectional area of ​​the flow channel.

8. The water treatment filter element according to claim 7, characterized in that, The end cap includes a first end cap and a second end cap. The water outlet channel at one end of the tubular body cavity is connected to the cavity of the first end cap through a guide channel, and the water outlet channel at the other end of the tubular body cavity is connected to the cavity of the second end cap through a guide channel.

9. The water treatment filter element according to claim 8, characterized in that, The radial cross-sectional area of ​​the flow guide channel is smaller than the radial cross-sectional area of ​​the central flow channel.

10. The water treatment filter element according to claim 1, characterized in that, The water treatment medium comprises metallic copper particles or copper alloy particles with an active surface that reacts with hydrogen sulfide, and the filling rate of the metallic copper particles or copper alloy particles in the sandwich structure is >90 vol.

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