Membrane separation device for plant extraction

Abstract

The utility model relates to the technical field of plant stock solution extraction, in particular to a membrane separation device for plant extraction, which comprises a bottom plate, a separation mechanism arranged on the rear side of the bottom plate and a filtering mechanism used for filtering plant stock solution before membrane separation, the filtering mechanism is positioned on the front side of the bottom plate, and the filtering mechanism comprises a filtering structure and a stirring structure. An annular filter plate is arranged above the lower fixing frame, and an anti-blocking structure for backflushing filter holes in the filter plate is arranged below the filter plate. The plant stock solution filtering device has the beneficial effects that impurity particles in plant stock solutions are preliminarily pretreated and filtered through the filtering structure, when the filtering plate is blocked, the stock solutions in the filtering plate are gathered together through the anti-blocking structure, back-flushing water flow in the direction from bottom to top is applied to the filtering plate, and therefore impurities blocked in filtering holes of the filtering plate are flushed away; the phenomenon that the filter plate is blocked by impurities is reduced, so that the normal filtering capacity of the filter plate is ensured, and the filtering efficiency of the filter plate on the stock solution is ensured.

Description

Technical Field

[0001] This utility model relates to the field of plant component extraction technology, and in particular to a membrane separation device for plant extraction. Background Technology

[0002] The active ingredients in natural plants mainly include flavonoids, alkaloids, and polysaccharides. These components are widely distributed in the plant kingdom and possess various biological activities and pharmacological effects. Commonly used separation methods include membrane separation, extraction, and crystallization. Membrane separation is a molecular-level separation technology that utilizes special membranes to selectively allow certain components in a liquid to permeate. In the extraction of active ingredients from natural plants, membrane separation technology can be used to extract active ingredients from complex homogeneous or heterogeneous systems, and to purify and refine them by separating and removing impurities.

[0003] By comparing a membrane separation-based natural plant active ingredient extraction device with patent publication number CN222694010U, it is found that in this solution, the extraction liquid is easily purified by multiple microporous filtration membranes through the set collection box and purification section. However, the raw material is not pre-treated by filtration before membrane separation of the plant liquid. During membrane separation of the liquid, small particles of impurities contained in the liquid may clog the membrane, accelerate the frequency of membrane cleaning or replacement, and reduce the efficiency of membrane separation of plant liquid. Utility Model Content

[0004] The purpose of this invention is to provide a membrane separation device for plant extraction in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A membrane separation device for plant extraction includes a base plate, a separation mechanism disposed on the rear side of the base plate, and a filtration mechanism for filtering the plant extract before membrane separation, the filtration mechanism being located on the front side of the base plate.

[0007] The filtration mechanism includes a filtration structure for preliminary filtration of the plant extract and a stirring structure for stirring the plant extract during preliminary filtration.

[0008] The filter structure includes a filter cylinder located on the front side of the base plate, a fixing ring fixed on the inner wall of the filter cylinder, a lower annular fixing frame fixed at the upper end of the fixing ring, an annular filter plate above the lower fixing frame, an upper annular fixing frame fixed at the lower end of the filter plate, a sliding ring slidably installed between the upper and lower fixing frames, a compression spring connected between the sliding ring and the upper fixing frame, a pre-tightening spring connected between the sliding ring and the lower fixing frame, and an anti-clogging structure for backflushing the filter holes on the filter plate located below the filter plate.

[0009] Preferred anti-clogging structure includes multiple partitions disposed at the end of the filter plate away from the center of the filter cylinder, the partitions being distributed around the center of the filter plate, a ring-shaped fixing platform fixed at the end of the sliding ring away from the center of the filter plate, a sliding groove being provided at the lower end of the fixing platform, multiple fixing blocks being fixed around the lower end of the fixing platform, a sliding block being provided below the fixing block, the sliding block being slidably connected to the fixing ring, a baffle being slidably fitted at the upper end of the fixing platform, the upper end of the baffle being in contact with the lower end of the partition, the fixing block and the sliding block being inclined at their respective ends and slidingly fitted to each other, the fixing platform being in contact with the inner wall of the filter cylinder, a connecting frame being provided on the side wall of the filter cylinder near the fixing platform, a connecting plate being fixed between the baffle and the sliding block, the connecting plate being slidably connected to the connecting frame, and a return spring being connected between the connecting frame and the connecting plate.

[0010] Preferably, the stirring structure includes a stirring plate rotatably disposed at the upper end of the filter cylinder, a stirring motor is installed at the rotating end of the stirring plate, and the output end of the stirring motor is fixed to the rotating end of the stirring plate through a coupling.

[0011] Preferably, the separation mechanism includes a support plate located on the rear side of the base plate, a lifting plate slidably located below the support plate, a hydraulic cylinder located between the lifting plate and the base plate, an infusion pipe connected between the upper part of the support plate and the filter cylinder, multiple top covers located at the upper end of the infusion pipe, multiple bases located at the upper end of the lifting plate, and a separation cylinder located between the top covers and bases distributed vertically.

[0012] Preferably, the fixing block and the sliding block are made of silicone.

[0013] Preferably, the baffle and partition are made of rubber.

[0014] Preferably, a ring-shaped water-collecting plate is fixed at one end of the sliding ring near the center of the filter plate, and multiple water leakage holes are opened on the water-collecting plate.

[0015] Compared with existing technologies, the beneficial effects are as follows:

[0016] The filter structure performs preliminary pretreatment filtration of impurities and particulate matter in the plant extract. When the filter plate becomes clogged, the anti-clogging structure gathers the extract inside and applies a backwash water flow from bottom to top to the filter plate, thereby clearing the impurities clogging the filter plate and reducing the clogging phenomenon. This ensures the normal filtration capacity of the filter plate and guarantees the filtration efficiency of the extract. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional spatial view of a membrane separation device for plant extraction according to the present invention;

[0019] Figure 2 This is a cross-sectional view of the internal structure of the filter cartridge of the membrane separation device for plant extraction described in this utility model;

[0020] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0021] Figure 4 This is a schematic diagram of the separation mechanism of the membrane separation device for plant extraction described in this utility model;

[0022] Figure 5 This is a schematic diagram of the anti-clogging structure of a membrane separation device for plant extraction according to the present invention.

[0023] The annotations in the attached figures are explained as follows:

[0024] 100. Base plate; 201. Filter cylinder; 202. Stirring plate; 203. Stirring motor; 204. Filter plate; 205. Partition plate; 206. Connecting frame; 207. Upper fixed frame; 208. Sliding ring; 209. Lower fixed frame; 210. Fixed ring; 211. Water collecting plate; 212. Fixed block; 213. Sliding block; 214. Baffle; 215. Connecting plate; 216. Fixed platform; 301. Support plate; 302. Hydraulic cylinder; 303. Lifting plate; 304. Base; 305. Infusion pipe; 306. Top cover; 307. Separation cylinder. Detailed Implementation

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] like Figures 1-5 As shown, a membrane separation device for plant extraction includes a base plate 100, a separation mechanism for membrane separation of plant extract, the separation mechanism being located on the rear side of the base plate 100, and a filtration mechanism for filtering the plant extract before membrane separation, the filtration mechanism being located on the front side of the base plate 100.

[0028] In this embodiment, the filtration mechanism includes a filtration structure for preliminary filtration of the plant extract and a stirring structure for stirring the plant extract during preliminary filtration.

[0029] The filter structure includes a filter cylinder 201 located on the front side of the base plate 100. A fixing ring 210 is fixed on the inner wall of the filter cylinder 201. An annular lower fixing frame 209 is fixed at the upper end of the fixing ring 210. An annular filter plate 204 is located above the lower fixing frame 209. An annular upper fixing frame 207 is fixed at the lower end of the filter plate 204. A sliding ring 208 is slidably installed between the upper fixing frame 207 and the lower fixing frame 209. A compression spring is connected between the sliding ring 208 and the upper fixing frame 207. A pre-tightening spring is connected between the sliding ring 208 and the lower fixing frame 209. An anti-clogging structure for backflushing the filter holes on the filter plate 204 is provided below the filter plate 204.

[0030] The anti-clogging structure includes multiple partitions 205 disposed at the end of the filter plate 204 away from the center of the filter cylinder 201. The multiple partitions 205 are distributed around the center of the filter plate 204. A ring-shaped fixed platform 216 is fixed at the end of the sliding ring 208 away from the center of the filter plate 204. A sliding groove is provided at the lower end of the fixed platform 216. Multiple fixed blocks 212 are fixed around the lower end of the fixed platform 216. A sliding block 213 is provided below the fixed block 212. The sliding block 213 is slidably connected to the fixed ring 210. A baffle 214 is slidably fitted at the upper end of the fixed platform 216. The upper end of the baffle 214 is in contact with the lower end of the partition 205. The fixed blocks 212 and the sliding blocks 213 are both inclined at their close ends and are slidably fitted to each other.

[0031] The fixed platform 216 is attached to the inner wall of the filter cylinder 201. A connecting frame 206 is provided on the side wall of the filter cylinder 201 near the fixed platform 216. A connecting plate 215 is fixed between the baffle 214 and the sliding block 213. The connecting plate 215 is slidably connected to the connecting frame 206. A return spring is connected between the connecting frame 206 and the connecting plate 215. A ring-shaped water-collecting plate 211 is fixed at one end of the sliding ring 208 near the center of the filter plate 204. Multiple water leakage holes are opened on the water-collecting plate 211. The fixed block 212 and the sliding block 213 are made of silicone, and the baffle 214 and the partition 205 are made of rubber.

[0032] The stirring structure includes a stirring plate 202 rotatably mounted inside the upper part of the filter cylinder 201. A stirring motor 203 is installed on the rotating end of the stirring plate 202. The output end of the stirring motor 203 is fixed to the rotating end of the stirring plate 202 through a coupling. The filtration structure performs preliminary pretreatment filtration of impurities and particulate matter in the plant extract. When the filter plate 204 becomes clogged, the anti-clogging structure gathers the extract inside and applies a backwash water flow from bottom to top to the filter plate 204, thereby flushing away the impurities clogging the filter holes of the filter plate 204, reducing the clogging phenomenon of impurities, and thus ensuring the normal filtration capacity of the filter plate 204 and the filtration efficiency of the filter plate 204 for the extract.

[0033] In this embodiment: the separation mechanism includes a support plate 301 disposed on the rear side of the base plate 100, a lifting plate 303 slidably disposed below the support plate 301, a hydraulic cylinder 302 disposed between the lifting plate 303 and the base plate 100, an infusion pipe 305 connected between the upper part of the support plate 301 and the filter cylinder 201, a plurality of top covers 306 disposed at the upper end of the infusion pipe 305, a plurality of bases 304 disposed at the upper end of the lifting plate 303, and a separation cylinder 307 disposed between the upper and lower distributed top covers 306 and bases 304.

[0034] Working principle: First, a large amount of plant extract is poured into the filter cylinder 201. The filter plate 204 inside the filter cylinder 201 is used to perform preliminary filtration of impurities and other particulate matter in the plant extract, so as to reduce the blockage of the membrane by impurities and particulate matter during the later separation of the extract membrane. Then, the stirring motor 203 is driven to rotate the stirring plate 202 to stir the extract inside the filter cylinder 201, thereby accelerating the preliminary filtration of the extract.

[0035] When impurities clog the filter plate 204, the flow rate of the raw liquid through the filter plate 204 is greatly reduced. This causes the raw liquid to flow above the fixed platform 216, increasing the load on the fixed platform 216 and pushing it downwards. Consequently, the baffle 214 at the end of the filter plate 204 prevents the filter plate 204 from moving downwards. As the fixed platform 216 moves downwards, it causes the sliding ring 208 to move downwards, stretching the compression spring between the sliding ring 208 and the upper fixed frame 207, increasing the spring's force. When the fixed block 212 at the lower end of the fixed platform 216 continues to move downwards, it presses against the sliding block 213, causing the sliding block 213 to move away from the center of the filter plate 204. This movement is then transmitted through the connecting plate 215 to the baffle. When baffle 214 moves away from the center of filter plate 204, it will disengage from the partition 205 and, under the force of the compression spring, will quickly pull the upper filter plate 204 downward. At the same time, the fixed platform 216 will drive the sliding ring 208 to quickly return to its original position. When the sliding ring 208 moves upward, it will drive the water-gathering plate 211 to move upward quickly, so that the water-gathering plate 211 and the filter plate 204 will quickly approach each other. Then, the water-gathering plate 211 will gather the raw liquid together to form a backwash water flow from bottom to top on the filter plate 204, which will impact the lower end of the filter plate 204 and flush away the impurities in the filter holes of the filter plate 204, reducing the clogging of the filter plate 204 by impurities, thereby ensuring the normal filtration capacity of the filter plate 204 and ensuring the filtration efficiency of the filter plate 204 for the raw liquid.

[0036] After the impurities clogging the filter plate 204 are flushed out, the filter plate 204 returns to normal flow rate of the original liquid. At this time, the fixed platform 216 resets upward, the fixed block 212 no longer squeezes the sliding block 213, causing the baffle 214 to reset and continue to block the partition 205, continuing to filter the plant original liquid normally. The original liquid after preliminary filtration is pumped into the infusion pipe 305 by an external water pump, and then flows into the interior of multiple separation cylinders 307 to achieve membrane separation of the original liquid and extract the substances inside the original liquid.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A plant extraction membrane separation device comprising a base plate (100), the rear side of the base plate (100) is provided with a separation mechanism, characterized in that: It also includes a filtration mechanism for filtering the plant extract before membrane separation, the filtration mechanism being located on the front side of the base plate (100); The filtration mechanism includes a filtration structure for preliminary filtration of the plant extract and a stirring structure for stirring the plant extract during preliminary filtration. The filter structure includes a filter cylinder (201) disposed on the front side of the base plate (100). A fixing ring (210) is fixed on the inner wall of the filter cylinder (201). An annular lower fixing frame (209) is fixed at the upper end of the fixing ring (210). An annular filter plate (204) is disposed above the lower fixing frame (209). An annular upper fixing frame (207) is fixed at the lower end of the filter plate (204). A sliding ring (208) is slidably installed between the upper fixing frame (207) and the lower fixing frame (209). A compression spring is connected between the sliding ring (208) and the upper fixing frame (207). A pre-tightening spring is connected between the sliding ring (208) and the lower fixing frame (209). An anti-clogging structure for backflushing the filter holes on the filter plate (204) is provided below the filter plate (204).

2. A plant extracted membrane separation device according to claim 1, characterized in that: The anti-clogging structure includes multiple partitions (205) disposed at the end of the filter plate (204) away from the center of the filter cylinder (201). The multiple partitions (205) are distributed around the center of the filter plate (204). An annular fixing platform (216) is fixed at the end of the sliding ring (208) away from the center of the filter plate (204). A sliding groove is provided at the lower end of the fixing platform (216). Multiple fixing blocks (212) are fixed around the lower end of the fixing platform (216). A sliding block (213) is provided below the fixing block (212). The sliding block (213) is slidably connected to the fixing ring (210). A baffle is slidably engaged at the upper end of the fixing platform (216). The baffle (214) is attached to the upper end of the partition (205). The fixed block (212) and the sliding block (213) are inclined at one end and slide together. The fixed platform (216) is attached to the inner wall of the filter cylinder (201). A connecting frame (206) is provided on the side wall of the filter cylinder (201) near the fixed platform (216). A connecting plate (215) is fixed between the baffle (214) and the sliding block (213). The connecting plate (215) is slidably connected to the connecting frame (206). A return spring is connected between the connecting frame (206) and the connecting plate (215).

3. A plant extracted membrane separation device according to claim 2, characterized in that: The stirring structure includes a stirring plate (202) rotatably disposed inside the upper part of the filter cylinder (201). A stirring motor (203) is installed on the rotating end of the stirring plate (202). The output end of the stirring motor (203) is fixed to the rotating end of the stirring plate (202) through a coupling.

4. A plant extracted membrane separation device according to claim 3, characterized in that: The separation mechanism includes a support plate (301) disposed on the rear side of the base plate (100), a lifting plate (303) slidably disposed below the support plate (301), a hydraulic cylinder (302) disposed between the lifting plate (303) and the base plate (100), an infusion pipe (305) connected between the upper part of the support plate (301) and the filter cylinder (201), a plurality of top covers (306) disposed at the upper end of the infusion pipe (305), a plurality of bases (304) disposed at the upper end of the lifting plate (303), and a separation cylinder (307) disposed between the top covers (306) and the bases (304) distributed vertically.

5. A plant extracted membrane separation device according to claim 4, characterized in that: The fixing block (212) and the sliding block (213) are made of silicone.

6. A plant extracted membrane separation device according to claim 5, wherein: The baffle (214) and the partition (205) are made of rubber.

7. A plant extracted membrane separation device according to claim 6, characterized in that: The sliding ring (208) has an annular water-collecting plate (211) fixed at one end near the center of the filter plate (204), and the water-collecting plate (211) has multiple water leakage holes.

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