A 3D printed dechlorination element

Abstract

The application discloses a 3D-printed chlorine removal element, which is characterized in that a liquid inlet and a liquid outlet are coaxially arranged on a shell; a filter core is arranged in the shell, the inside of the filter core is in a honeycomb shape, one side of the filter core is in a conical structure, the tip of the conical structure is directed to the axis of the liquid inlet, a liquid inlet hole is arranged in the circumferential direction of the filter core, and a liquid outlet hole is arranged at the other end of the filter core. When the chlorine-containing wastewater flows through the chlorine removal element at a certain speed, the chlorine can be fully reacted, the porous carbon carrier can adhere to the chlorine removal agent to prevent the chlorine removal agent from being lost, the filter core is designed in a clever structure, the residence time of the liquid in the filter core can be increased, compared with a traditional chlorine removal structure, the application has the advantages of low cost, simple operation, high efficiency, special structure and 3D printing, does not need to rely on too many instruments, and is more convenient.

Description

Technical Field

[0001] This invention relates to a 3D-printed chlorine removal element. Background Technology

[0002] In recent years, chlorine-containing wastewater generated from industry and daily life has been found to be toxic and can harm the environment if not treated properly. Common methods for treating chlorine-containing wastewater include ion exchange, chemical precipitation, and reduction. In chemical precipitation, the dechlorination materials used are mostly powders, which are easily soluble in acidic solutions, leading to significant losses during the dechlorination process.

[0003] With the current development and maturity of 3D printing technology, combining dechlorination with 3D printing, through the design of specific 3D-printed devices, can increase the contact time and contact area between chlorinated wastewater and dechlorination elements. Furthermore, the mixing of multiple substances for dechlorination significantly improves dechlorination efficiency. These dechlorination substances can be adsorbed onto porous carbon dechlorination agent blocks, minimizing loss. Moreover, this 3D-printed dechlorination element has advantages such as low cost and simple operation, greatly improving dechlorination efficiency while reducing costs. Therefore, this invention provides a 3D-printed dechlorination element. Summary of the Invention

[0004] The present invention provides a 3D-printed chlorine removal element to solve the problems existing in the prior art.

[0005] The technical solutions adopted in this invention are as follows:

[0006] A 3D-printed chlorine removal element, including

[0007] A housing, wherein a liquid inlet and a liquid outlet are arranged coaxially;

[0008] The filter element is located inside the housing and has a honeycomb structure inside. One side of the filter element has a conical structure with the tip of the cone facing the axis of the liquid inlet. The filter element has a liquid inlet hole in the circumferential direction and a liquid outlet hole at the other end.

[0009] Furthermore, the filter element includes a filter element seat and a core body. The filter element seat is hollow inside, and the core body is placed inside the filter element seat. The core body is provided with honeycomb holes. The head of the filter element seat is a conical structure. Several spirally distributed guide grooves are provided on the conical surface of the head of the filter element seat. Several liquid inlet holes are provided around the filter element seat, and the liquid inlet holes are located at the root of the conical structure.

[0010] Furthermore, the core has a stacked structure, including a first filter body and several second filter bodies. The first filter body has several honeycomb holes in both the axial and circumferential directions, and the second filter bodies have several honeycomb holes in the axial direction. The honeycomb holes in the circumferential direction of the first filter body are connected to the liquid inlet hole.

[0011] Furthermore, bosses and grooves for mating are provided between the first filter body and the second filter body, as well as between two adjacent second filter bodies.

[0012] Furthermore, both the lower end face of the first filter body and the lower end face of the second filter body are provided with recessed grooves.

[0013] Furthermore, a first limiting step is provided on the outer wall of the first filter body, and the honeycomb holes in the circumferential direction of the first filter body are located above the first limiting step; a second limiting step is provided on the inner wall of the filter element seat, the first limiting step abuts against the second limiting step, and a limiting ring is fixedly connected to the tail of the filter element seat, the limiting ring axially positioning the core body inside the filter element seat.

[0014] Furthermore, the second limiting step is located below the liquid inlet.

[0015] Furthermore, the honeycomb pores in the circumferential direction of the first filter body are arranged at an angle toward the liquid outlet.

[0016] Furthermore, the filter element is formed by 3D printing, and the printing material is a mixture of photosensitive resin, anion exchange resin, copper-containing powder, or bismuth-containing powder.

[0017] Furthermore, when the printing material is a mixture of photosensitive resin and anion exchange resin, the two are mixed in a volume ratio of 6:1 to 4:1.

[0018] When the printing material is a mixture of photosensitive resin and copper-containing powder, the two are mixed in a mass ratio of 10:1 to 8:1.

[0019] When the printing material is a mixture of photosensitive resin and bismuth-containing powder, the two are mixed in a mass ratio of 10:1 to 8:1.

[0020] The present invention has the following beneficial effects:

[0021] When chlorinated wastewater flows through the dechlorination element at a certain speed, it can fully react with chlorine, and the porous carbon carrier can adhere to the dechlorinating agent to prevent the dechlorinating agent from being lost. The filter element structure is cleverly designed to increase the residence time of the liquid in the filter element. Compared with the traditional dechlorination structure, this invention is inexpensive, easy to operate, and highly efficient. Its special structure and 3D printing do not require too many instruments and are more convenient. Attached Figure Description

[0022] Figure 1 This is a structural diagram of the present invention.

[0023] Figure 2 This is a cross-sectional view of the present invention.

[0024] Figure 3 This is a structural diagram of the filter element.

[0025] Figure 4 This is a structural diagram of the core component in the filter element.

[0026] Figure 5 This is a structural diagram of the core component in the filter element. Implementation

[0027] The invention will now be further described with reference to the accompanying drawings.

[0028] like Figure 1 and Figure 2 This invention discloses a 3D-printed chlorine removal element, comprising a housing 1 and a filter element 2. The housing 1 has a coaxially arranged liquid inlet 11 and liquid outlet 12 at its upper and lower ends. The filter element 2 is disposed inside the housing 1, and its interior is honeycomb-shaped. The head of the filter element 2 has a conical structure, with the tip pointing towards the axis of the liquid inlet 11. A liquid inlet hole 21 is provided in the circumferential direction of the filter element 2. Liquid enters through the liquid inlet hole 11 of the housing 1, is then dispersed by the conical structure of the filter element 2, and finally enters the interior of the filter element 2 from the circumference. A liquid outlet hole is provided at the tail end of the filter element 2, through which the liquid inside the filter element 2 finally flows out and is discharged from the housing 1 through the liquid outlet 12.

[0029] like Figure 3 The filter element 2 of this invention includes a filter element seat 22 and a core 23. The filter element seat 22 is hollow inside, and the core 23 is placed inside the filter element seat 22. The core 23 has honeycomb pores. The head of the filter element seat 22 has a conical structure, and several spirally distributed guide grooves 20 are provided on the conical surface. Several liquid inlet holes 21 are provided around the filter element seat 22, and the liquid inlet holes 21 are located at the root of the conical structure.

[0030] When chlorine-containing wastewater enters the housing 1 from the inlet 11 at a certain speed, the wastewater will flow along the guide groove 20 of the cone. The guide groove 20 is spirally distributed. After the water flows out of the guide groove 20, the chlorine-containing wastewater will continue to move forward in the original direction due to inertia, and then hit the inner wall of the housing 1, and then enter the filter element through the circumferential inlet hole 21 of the filter element 2.

[0031] To prevent liquid leakage from the joint between the filter element 2 and the housing 1, this invention incorporates a seal at the joint. Specifically, a third step 223 is provided on the outer wall of the filter element holder 22, and a fourth protrusion 14 is provided inside the housing 1. After the filter element 2 is assembled inside the housing, the upper surface of the third step 223 abuts against the lower surface of the fourth protrusion 14. To further ensure a seal, a sealing ring can be provided above the third step 223. The cooperation between the third step 223 and the fourth protrusion 14 prevents liquid from leaking directly from the joint between the housing 1 and the filter element 2. A limiting rib 15 is also provided on the inner wall of the housing 1, which axially positions the filter element 2 within the housing 1.

[0032] like Figure 4 The core 23 has a stacked structure, including a first filter body 231 and several second filter bodies 232. The first filter body 231 has several honeycomb holes in both its axial and circumferential directions, and the second filter bodies 232 have several honeycomb holes in their axial directions. The honeycomb holes in the circumferential direction of the first filter body 231 communicate with the liquid inlet 21. In use, liquid enters through the liquid inlet 21 and then enters the core 23 through the honeycomb holes in the radial direction of the first filter body 231. To facilitate smoother liquid entry, the honeycomb holes in the circumferential direction of the first filter body 231 are arranged at an angle towards the liquid outlet 12 (inclining downwards towards the axis). Simultaneously, the lower end wall of the liquid inlet 21 is also a sloped structure, with its inclination direction being the same as that of the corresponding honeycomb holes, all to ensure better liquid flow into the core 23.

[0033] like Figure 5 To ensure the stability of the fit between adjacent filter elements and to prevent liquid from flowing out from the joint surface, a boss A and a groove B are provided between the first filter element 231 and the second filter element 232, as well as between two adjacent second filter elements 232. This "convex-concave" fit ensures the stability of the fit between adjacent filter elements, and the insertion of the boss A into the groove B ensures a circumferential seal.

[0034] Because the core 23 has a layered structure, to ensure smooth liquid flow after the liquid enters the core 23, recessed grooves 230 are provided on the lower end surfaces of both the first filter body 231 and the second filter body 232. The grooves 230 ensure that adjacent filter bodies are not "face-to-face" after being fitted together, but rather form a cavity (formed by the grooves 230), facilitating the flow of liquid from the upper filter body to the lower one. In use, the honeycomb holes on adjacent filter bodies can be staggered, thereby increasing the residence time of the liquid within the core 23. Due to the arrangement of the grooves 230, even with staggered honeycomb holes, fluid flow is not affected. Without the grooves 230, staggered honeycomb holes might lead to clogging.

[0035] To prevent liquid from leaking from the outer wall of the core 23, a first limiting step 234 is provided on the outer wall of the first filter body 231, and the circumferential honeycomb holes of the first filter body 231 are located above the first limiting step 234; a second limiting step is provided on the inner wall of the filter element seat 22, and the second limiting step is located below the liquid inlet 21. The first limiting step 234 abuts against the second limiting step (achieving a seal), and a limiting ring 24 is fixedly connected to the tail of the filter element seat 22, which axially positions the core 23 within the filter element seat 22.

[0036] The filter element 2 in this invention is formed by 3D printing. The printing material is a mixture of photosensitive resin, anion exchange resin, copper powder or bismuth powder.

[0037] When the printing material is a mixture of photosensitive resin and anion exchange resin in a volume ratio of 6:1 to 4:1, it is dispersed evenly by ultrasonication for 10-15 minutes in the dark. The mixture is then poured into the hopper of the photopolymer 3D printer. After printing, the printed dechlorination element is cleaned with ethanol and distilled water and dried. It is then carbonized in a muffle furnace at 200-250℃ for 25-35 minutes. The porous carbon dechlorination agent block obtained at 200-250℃ retains anion exchange resin particles.

[0038] When the printing material is a mixture of photosensitive resin and copper-containing powder, the two are mixed in a mass ratio of 10:1 to 8:1. The mixture is then ultrasonically dispersed for 10-15 minutes in the dark until it is uniform. The mixture is then poured into the hopper of the photopolymer 3D printer. After printing, the printed dechlorination element is cleaned with ethanol and distilled water and dried. It is then carbonized in a muffle furnace at 250-300℃ for 25-35 minutes. At 250-400℃, the copper-containing material will generate cuprous oxide particles. These particles will be tightly adsorbed on the inner and outer surfaces of the porous carbon dechlorination block, greatly promoting its regeneration and repeated use, as well as stable dechlorination.

[0039] When the printing material is a mixture of photosensitive resin and bismuth-containing powder, the two are mixed in a mass ratio of 10:1 to 8:1. The mixture is then ultrasonically dispersed for 10-15 minutes in the dark until it is uniform. The mixture is then poured into the hopper of the photopolymer 3D printer. After printing, the printed dechlorination element is cleaned with ethanol and distilled water and dried. It is then carbonized in a muffle furnace at 350-400℃ for 25-35 minutes. At 350-400℃, the bismuth-containing material will generate bismuth oxide particles. These particles will be tightly adsorbed on the inner and outer surfaces of the porous carbon dechlorination block, greatly promoting its regeneration and repeated use, as well as stable dechlorination.

[0040] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be considered within the scope of protection of the present invention.

Claims

1. A 3D-printed chlorine removal element, characterized in that: include The housing (1) is provided with a liquid inlet (11) and a liquid outlet (12) arranged coaxially. The filter element (2) is located inside the housing (1). Its interior is honeycomb-shaped. One side of the filter element (2) is a cone-shaped structure, and the cone tip faces the axis of the liquid inlet (11). The filter element (2) has a liquid inlet hole (21) in the circumferential direction and a liquid outlet hole at the other end of the filter element (2). The filter element (2) includes a filter element seat (22) and a core (23). The filter element seat (22) is hollow inside. The core (23) is placed inside the filter element seat (22). The core (23) is provided with honeycomb holes. The head of the filter element seat (22) is a conical structure. Several spirally distributed guide grooves (20) are provided on the conical surface of the head of the filter element seat (22). Several liquid inlet holes (21) are provided in the circumference of the filter element seat (22). The liquid inlet holes (21) are located at the root of the conical structure. The core (23) is a stacked structure, including a first filter body (231) and several second filter bodies (232). Several honeycomb holes are provided in both the axial and circumferential directions of the first filter body (231), and several honeycomb holes are provided in the axial direction of the second filter body (232). The honeycomb holes in the circumferential direction of the first filter body (231) are connected to the liquid inlet hole (21). The lower end face of the first filter body (231) and the lower end face of the second filter body (232) are both provided with recessed grooves (230). The honeycomb pores in the circumferential direction of the first filter body (231) are arranged at an angle toward the liquid outlet (12); The filter element (2) is formed by 3D printing. The printing material is a mixture of photosensitive resin and anion exchange resin, or a mixture of photosensitive resin and copper powder, or a mixture of photosensitive resin and bismuth powder.

2. The 3D-printed chlorine removal element as described in claim 1, characterized in that: The first filter body (231) and the second filter body (232) are provided with bosses and grooves for mating, as well as between two adjacent second filter bodies (232).

3. The 3D-printed chlorine removal element as described in claim 1, characterized in that: The first filter body (231) has a first limiting step (234) on its outer wall, and the honeycomb holes of the first filter body (231) are located above the first limiting step (234); the filter element seat (22) has a second limiting step on its inner wall, and the first limiting step (234) abuts against the second limiting step; a limiting ring (24) is fixedly connected to the tail of the filter element seat (22), and the limiting ring (24) axially positions the core (23) inside the filter element seat (22).

4. The 3D-printed chlorine removal element as described in claim 3, characterized in that: The second limiting step is located below the liquid inlet (21).

5. The 3D-printed chlorine removal element as described in claim 1, characterized in that: When the printing material is a mixture of photosensitive resin and anion exchange resin, the two are mixed in a volume ratio of 6:1 to 4:

1. When the printing material is a mixture of photosensitive resin and copper-containing powder, the two are mixed in a mass ratio of 10:1 to 8:

1. When the printing material is a mixture of photosensitive resin and bismuth-containing powder, the two are mixed in a mass ratio of 10:1 to 8:1.

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