Active carbon tank for plant extraction

Abstract

The utility model discloses a kind of activated carbon tanks for plant extraction, mainly related to extraction liquid filtration technical field. Including tank body, the two ends of the tank body are respectively equipped with the tank mouth corresponding with its inner cavity section, the end cap of being sealed with it is cooperated on the tank mouth, the tank body is equipped with multiple activated carbon units along its axial direction in, the activated carbon unit includes annular retaining ring corresponding with the inner diameter of tank body, the two end faces of annular retaining ring are respectively fixed with end face screen plate, activated carbon filler is filled between annular retaining ring and end face screen plate, support rod is equipped between adjacent activated carbon units, the support rod is set along the edge of annular retaining ring, the two ends of the support rod are respectively with the activated carbon unit of same side detachable connection. The beneficial effects of the utility model lie in: it can replace part activated carbon according to adsorption capacity attenuation situation, to maintain adsorption effect, reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of extract filtration technology, specifically an activated carbon canister for plant extraction. Background Technology

[0002] In plant extraction processes, activated carbon tanks are indispensable for removing impurities, decolorizing, deodorizing, and purifying the extract. Activated carbon tanks are typically used in conjunction with quartz sand tanks to treat plant extracts, removing pesticide residues, heavy metal ions, pigments, odors, and other harmful substances. This process also improves the color of the extract, adsorbs oxygen or oxidizes byproducts, and aids in filtration. Therefore, this step significantly impacts the quality of the final product.

[0003] In existing activated carbon tank equipment, its function depends on the adsorption capacity of the activated carbon packing. However, the adsorption capacity of activated carbon is limited, requiring regular maintenance. Furthermore, the adsorption capacity of activated carbon decreases during use due to the presence of large molecules such as plant colloids, proteins, and polysaccharides, leading to slower flow rates or even blockages. Therefore, even in activated carbon tanks equipped with backwashing systems (such as online regeneration systems), the packing still needs to be replaced periodically. Existing equipment often uses a one-time filling method, requiring complete replacement during the replacement cycle, which is costly. Additionally, the processing capacity decreases near the replacement cycle, significantly reducing the treatment effect. Utility Model Content

[0004] The purpose of this invention is to provide an activated carbon canister for plant extraction, which can selectively replace some of the activated carbon according to the decline in adsorption capacity, thereby maintaining the adsorption effect and reducing maintenance costs.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] An activated carbon container for plant extracts includes a container body with openings at both ends corresponding to the cross-sections of their inner cavities. Each opening is fitted with a sealing cap. Multiple activated carbon units are arranged axially within the container body. Each activated carbon unit includes an annular retaining ring adapted to the inner diameter of the container. End face mesh plates are fixed to the end faces of the annular retaining ring. Activated carbon filler is filled between the annular retaining ring and the end face mesh plates. Support rods are provided between adjacent activated carbon units, with the support rods positioned along the edge of the annular retaining rings. The two ends of the support rods are detachably connected to activated carbon units on the same side.

[0007] The end cap includes a front end cap and a rear end cap. The front end cap has a liquid inlet, and the rear end cap has a liquid outlet. The material flows from the liquid inlet to the liquid outlet.

[0008] The annular retaining ring has multiple rods equidistantly passing through it along its circumference, and the two ends of the support rod are provided with first slots for movably inserting into the rods.

[0009] The inner ring of the annular retaining ring is provided with a plurality of inwardly protruding ribs at equal intervals. The ribs are provided with mounting holes through the axial direction of the annular retaining ring. The end face mesh plate is provided with through holes corresponding to the mounting holes at equal intervals along its peripheral edge. The rod passes through the mounting holes and the through holes. Nuts are respectively fitted at both ends of the rod. The nuts are used to press and tighten the end face mesh plate on the same side.

[0010] Multiple positioning rods are provided between the activated carbon units at both ends and the end caps. The length of the positioning rods matches the distance from the activated carbon units at both ends to the end caps. One end of the positioning rod is provided with a second slot that can be movably inserted into the rod. The edge of the end cap is provided with an annular second flange. A first flange is provided at the can opening. The inner diameter of the second flange is smaller than the diameter of the can opening, so that the second flange forms an inwardly protruding annular step structure at the can opening. The end of the positioning rod away from the activated carbon unit contacts the annular boss structure.

[0011] A sealing ring is provided on the outer circumference of the annular retaining ring, and the sealing ring is tightly fitted to the inner wall of the tank.

[0012] Two symmetrical limiting plates are fixed on the inner wall of the tank. The limiting plates are long, straight cylindrical plates. The length direction of the limiting plates corresponds to the axial direction of the tank. The outer end face of the limiting plates includes a connected arc-shaped surface and a plane. The arc-shaped surface fits against the inner wall of the tank, and the plane faces the center of the tank. The annular retaining ring has symmetrical cut surfaces on its circumferential side wall. The spacing of the cut surfaces corresponds to the spacing between the two limiting plates.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] In practical use, the plant extract is thoroughly decolorized and filtered after passing through each activated carbon unit sequentially. The activated carbon units closest to the front opening are the first to come into contact with the liquid. During this layer-by-layer filtration, the closer to the front of the activated carbon packing, the greater the load and the faster the adsorption capacity degrades. Furthermore, the activated carbon units near the front opening are most prone to clogging. Therefore, after a period of operation, the end caps can be removed, and one or more activated carbon units can be taken out from the front. Based on the number of units removed, a corresponding number of new activated carbon units can be added to the rear to ensure the overall adsorption efficiency of the activated carbon packing within the tank. This ensures adsorption capacity while partially replacing the activated carbon, fully utilizing the activated carbon, reducing maintenance costs, and maintaining adsorption capacity. Simultaneously, it ensures that the final activated carbon units are always under a low load, guaranteeing filtration effectiveness and improving the quality of the extract. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the internal structure of this utility model.

[0016] Figure 2 This is a schematic diagram showing the components of this utility model disassembled.

[0017] Figure 3 This is a schematic diagram of the structure of the activated carbon unit assembly of this utility model.

[0018] Figure 4 This is a schematic diagram of the activated carbon unit of this utility model.

[0019] Figure 5 This is a schematic diagram showing the component breakdown of the activated carbon unit of this utility model.

[0020] The labels shown in the attached diagram:

[0021] 1. Tank body; 2. Front cover; 3. Rear cover; 4. First flange; 5. Second flange; 6. Fastener; 7. Annular stepped structure; 8. Annular retaining ring; 9. End face mesh plate; 10. Raised rib; 11. Rod; 12. Nut; 13. Limiting plate; 14. Cross-section; 15. Support rod; 16. Positioning rod. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0023] Example:

[0024] This activated carbon canister employs staged adsorption. Its main structure includes a horizontal canister 1. Inside the canister 1, removable activated carbon units are installed at equal intervals along its axial direction. To facilitate the removal of the activated carbon units, the two ends of the canister 1 are respectively provided with a front canister opening and a rear canister opening corresponding to their internal cavity cross-sections. The front canister opening and the rear canister opening are respectively fitted with a front canister cover 2 and a rear canister cover 3. The front canister cover 2 is provided with a liquid inlet, and the rear canister cover 3 is provided with a liquid outlet. The front canister cover 2 can also be equipped with a breather, a detection port, an auxiliary liquid port, etc., according to process requirements. The corresponding structures on the two end caps can adopt conventional structures of existing technology.

[0025] The front cover 2 and the rear cover 3 are identical in structure except for the connected pipes and auxiliary equipment. For ease of description, they are collectively referred to as end covers. The edge of the end cover is provided with an annular second flange 5, and the tank opening is provided with a first flange 4. Multiple fasteners 6 pass through the first flange 4 and the second flange 5. The fasteners 6 are bolt-nut fasteners. The fasteners 6 are arranged in a ring with 12 fasteners relative to the tank body 1, but are not limited to this example and can also be set to 6 or 8. The fasteners 6 achieve a sealed and fixed connection between the end cover and the tank body 1, so that the inside of the tank body 1 forms a closed cylindrical cavity.

[0026] The inner diameter of the second flange 5 is smaller than the diameter of the can opening, resulting in an inwardly protruding annular step structure 7 at both ends of the can body 1 after sealing and end capping. The protruding width of the annular step structure 7 can cover the end of the positioning rod 16, ensuring the axial position of the activated carbon unit within the can body 1 is stable.

[0027] The activated carbon unit adopts a flat structure, including an annular retaining ring 8. The outer diameter of the annular retaining ring 8 corresponds to the inner diameter of the tank 1. A sealing ring is provided on the outer circumferential surface of the annular retaining ring 8 to seal with the inner wall of the tank 1 and prevent liquid from passing through the edge.

[0028] The annular baffle ring 8 is filled with activated carbon packing material, and its adsorption layer has a uniform thickness to ensure efficient adsorption. Each of the two annular end faces of the annular baffle ring 8 is provided with a detachable end face mesh plate 9. The end face mesh plate 9 has mesh holes for filtering liquid while blocking the activated carbon packing material. Its specific disassembly structure is as follows:

[0029] The inner ring of the annular retaining ring 8 is provided with a plurality of inwardly protruding ribs 10 at equal intervals. The ribs 10 can enhance the support structure of the annular retaining ring 8 and provide an installation position.

[0030] The rib 10 has a mounting hole extending axially along the annular retaining ring 8. A multi-functional rod 11 passes through the mounting hole, and the rod 11 has an external thread in its middle. Two nuts 12 are fitted onto the rod 11. The end face mesh plate 9 has through holes equidistantly spaced along its peripheral edge, corresponding to the mounting holes. The nuts 12 press against the two end face mesh plates 9 on both sides. The end face mesh plates 9 can be fixed and disassembled by rotating the nuts 12. During installation, align the end face mesh plate 9 with the mounting hole along the through hole, insert the rod 11, tighten the nuts 12, fill with activated carbon filler, then align the other end face mesh plate 9 with the mounting hole, insert the rod 11, and tighten the nuts 12 to complete the installation. This structure allows the activated carbon unit to be completely disassembled into the annular retaining ring 8 and two independent end face mesh plates 9, facilitating cleaning of the inner and outer surfaces of the end face mesh plates 9, thoroughly clearing the blockage caused by plant fibers, and replacing the activated carbon filler. The rod 11 is made of high-strength steel to ensure that it is not easily deformed during frequent disassembly.

[0031] To improve the stability of the activated carbon unit within the tank 1 and reduce the adverse effects of torsional stress on the structural support, two symmetrical limiting plates 13 are welded to the inner wall of the tank. Each limiting plate 13 is a long, straight cylindrical plate, with its length direction corresponding to the axial direction of the tank 1. The outer end face of each limiting plate 13 includes a connected arcuate surface and a flat surface. The arcuate surface fits against the inner wall of the tank 1, and the flat surface faces the center of the tank 1, forming a limiting surface. Symmetrical cut surfaces 14 are provided on the circumferential sidewall of the annular retaining ring 8. The spacing of the cut surfaces 14 matches the spacing of the two limiting plates 13. The cut surfaces 14 contact the flat surface, limiting and stopping the circumferential movement of the annular retaining ring 8, preventing it from rotating within the tank 1, ensuring its dual stability in both the axial and circumferential directions, avoiding the transmission of torsional stress from adjacent activated carbon units to the rods 11 and support rods 15, and improving the stability of the internal structure.

[0032] Multiple support rods 15 are provided between adjacent activated carbon units. Each end of the support rod 15 is provided with a first slot. The first slot is a circular recess that matches the rod 11. The first slot is inserted into the rod 11 on two adjacent activated carbon units to limit the spacing between adjacent activated carbon units. The number of support rods 15 corresponds to the number of rods 11 on each activated carbon unit for the most stable effect. They provide distributed support in the circumferential direction to ensure the spacing between adjacent activated carbon units.

[0033] Multiple positioning rods 16 are provided between the activated carbon units at both ends and the end caps. The length of the positioning rods 16 matches the distance from the activated carbon units at both ends to the end caps (second flanges 5). One end of the positioning rod 16 is provided with a second slot that is movably inserted into the rod 11, and the other end abuts against the step structure protruding inward from the second flange 5. The positioning rods 16 limit the distance from the activated carbon units at both ends to the end caps, thereby limiting the position of each activated carbon unit in the tank.

[0034] The second slot can be threaded to the rod 11 to facilitate the stability of the positioning rod 16 and the activated carbon unit at the end during disassembly, and to prevent it from falling off.

[0035] In practical use, the activated carbon tank 1 is horizontally fixed. The plant extract is thoroughly decolorized and filtered after passing through each activated carbon unit in sequence. The activated carbon units closest to the front opening come into contact with the liquid first. In the layer-by-layer filtration, the closer the activated carbon packing is to the front, the greater the load and the faster the adsorption capacity degrades. The activated carbon units closest to the front opening are also most prone to clogging. Therefore, after running for a period of time, the end caps at both ends can be removed, and one or more activated carbon units can be taken out starting from the front. Based on the number of units removed, a corresponding number of new activated carbon units can be added to the rear to ensure the overall adsorption efficiency of the activated carbon packing inside the tank. For example, after removing two activated carbon units from the front, two new activated carbon units can be added to the rear, so that the activated carbon unit originally located in the third position becomes the activated carbon unit closest to the front cap 2, and comes into contact with the extract first in subsequent filtration. The removed activated carbon units can be disassembled, the end face mesh plate 9 thoroughly cleaned inside and out, and the activated carbon packing replaced for reuse.

[0036] During disassembly, be sure to remove the positioning rods 16 at both ends first, and then adjust the position of the internal activated carbon unit.

[0037] This maintenance method allows for timely replacement of activated carbon with rapidly declining adsorption capacity, rather than replacing the entire unit, significantly reducing maintenance costs. It also avoids waiting for all activated carbon to reach saturation, maintaining the equipment's continuous adsorption capacity. Furthermore, replacing the activated carbon units sequentially from the rear to the front (based on the flow of the feed solution) ensures that the final activated carbon units remain under low load, guaranteeing filtration efficiency and improving extract quality.

[0038] With improvements, this activated carbon tank can maintain production capacity by replacing one or a few activated carbon units, fully utilize the adsorption properties of activated carbon, reduce maintenance costs, and the disassembled units can be completely separated for easy and thorough cleaning. It can also completely and conveniently solve the clogging problems of cellulose, colloids, etc. in plant extracts.

Claims

1. An activated carbon container for plant extraction, characterized in that, The device includes a tank body, with openings at both ends corresponding to the cross-sections of their inner cavities. Each opening is fitted with a sealing cap. Multiple activated carbon units are arranged axially within the tank body. Each activated carbon unit includes an annular retaining ring adapted to the inner diameter of the tank. End face mesh plates are fixed to both ends of the annular retaining ring. Activated carbon filler is filled between the annular retaining ring and the end face mesh plates. Support rods are provided between adjacent activated carbon units, with the support rods positioned along the edge of the annular retaining rings. Both ends of the support rods are detachably connected to activated carbon units on the same side.

2. The activated carbon container for plant extraction according to claim 1, characterized in that, The end cap includes a front end cap and a rear end cap. The front end cap has a liquid inlet, and the rear end cap has a liquid outlet. Material flows from the liquid inlet to the liquid outlet.

3. The activated carbon container for plant extraction according to claim 1, characterized in that, The annular retaining ring has multiple rods equidistantly passing through it along its circumference, and the two ends of the support rod are provided with first slots for movably inserting into the rods.

4. The activated carbon container for plant extraction according to claim 3, characterized in that, The inner ring of the annular retaining ring is provided with a plurality of inwardly protruding ribs at equal intervals. The ribs are provided with mounting holes through the axial direction of the annular retaining ring. The end face mesh plate is provided with through holes corresponding to the mounting holes at equal intervals along its peripheral edge. The rod passes through the mounting holes and the through holes. Nuts are respectively fitted at both ends of the rod. The nuts are used to press and tighten the end face mesh plate on the same side.

5. The activated carbon container for plant extraction according to claim 3, characterized in that, Multiple positioning rods are provided between the activated carbon units at both ends and the end caps. The length of the positioning rods matches the distance from the activated carbon units at both ends to the end caps. One end of the positioning rod is provided with a second slot that can be movably inserted into the rod. The edge of the end cap is provided with an annular second flange. A first flange is provided at the can opening. The inner diameter of the second flange is smaller than the diameter of the can opening, so that the second flange forms an inwardly protruding annular step structure at the can opening. The end of the positioning rod away from the activated carbon unit contacts the annular boss structure.

6. The activated carbon container for plant extraction according to claim 1, characterized in that, A sealing ring is provided on the outer circumference of the annular retaining ring, and the sealing ring is tightly fitted to the inner wall of the tank.

7. The activated carbon container for plant extraction according to claim 1, characterized in that, Two symmetrical limiting plates are fixed on the inner wall of the tank. The limiting plates are long, straight cylindrical plates. The length direction of the limiting plates corresponds to the axial direction of the tank. The outer end face of the limiting plates includes a connected arc-shaped surface and a plane. The arc-shaped surface fits against the inner wall of the tank, and the plane faces the center of the tank. The annular retaining ring has symmetrical cut surfaces on its circumferential side wall. The spacing of the cut surfaces corresponds to the spacing between the two limiting plates.

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