Plant negative pressure extraction device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI MEIXIANGYUAN FOOD TECH CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-12
AI Technical Summary
In traditional negative pressure extraction processes, the mass transfer rate within the extraction tank is limited. High-viscosity extracts easily form stubborn scale on the inner wall of the tank, which is difficult to fully break down using conventional cleaning. Furthermore, the limited mass transfer rate of high-viscosity extracts (such as gums, resins, and polysaccharides) makes it difficult to achieve cell wall disruption. Even with increased mass transfer rates, the manual scraping or chemical cleaning after conventional shutdowns increases non-productive time by more than 30%, and the use of organic solvents exacerbates environmental and cost pressures.
Design a plant negative pressure extraction device, including a stirring mechanism and a scraping mechanism. The stirring mechanism realizes bidirectional stirring and crushing of raw materials through bidirectional stirring and crushing blades. The scraping mechanism removes high-viscosity extract from the inner wall of the extraction tank through scrapers, reducing cleaning costs and the frequency of manual intervention.
By incorporating bidirectional stirring and crushing blades, the mass transfer rate of active ingredients is improved, high-viscosity extracts are removed from the inner wall of the extraction tank, reducing raw material waste and cleaning costs, achieving efficient cleaning, and reducing the frequency of manual intervention.
Smart Images
Figure CN224220791U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plant negative pressure extraction technology, specifically a plant negative pressure extraction device. Background Technology
[0002] The main benefits of negative pressure extraction in plants include improving extraction efficiency and preserving bioactive components. Negative pressure technology utilizes the strong cavitation and mechanical effects generated by vacuum negative pressure to break down cell walls at lower temperatures, thereby maximizing the preservation of bioactive components and avoiding degradation under high temperature or high pressure conditions. This technology is particularly suitable for extracting heat-sensitive substances, such as flavonoids, and can improve extraction efficiency without damaging their structure.
[0003] In traditional negative pressure extraction processes, extraction tanks are mostly based on static osmosis principles or use single-axial mechanical stirring to achieve component separation. The mass transfer rate is limited, making it difficult to fully break down cell walls. The extraction rate of active substances fluctuates greatly, and high-viscosity extracts (such as pectin, resin, and polysaccharides) are prone to forming stubborn scale layers on the inner wall of the tank. Manual scraping or chemical cleaning after routine shutdowns not only increases non-productive time by more than 30%, but also exacerbates environmental and cost pressures due to the use of organic solvents. The risk of cross-contamination caused by residues further restricts the continuous production process. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this invention provides a negative pressure extraction device for plants, which solves the problems mentioned in the background section.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a plant negative pressure extraction device, including an extraction tank and an installation cover installed above the extraction tank. An installation frame is fixedly installed on the extraction tank, and a bottom cover is threaded onto the bottom of the extraction tank. The installation cover is provided with a stirring mechanism and a scraping mechanism for cleaning the extraction tank.
[0008] The stirring mechanism includes a mounting base rotatably mounted on a mounting cover, a rotating rod rotatably mounted inside the mounting base, a rotating frame rotatably mounted inside the mounting base, the rotating rod passing through the rotating frame and rotatably connected to the rotating frame, a first toothed disc fixedly sleeved on the rotating rod, a second toothed disc fixedly sleeved on the rotating frame, a toothed column rotatably mounted inside the mounting base, with the first and second toothed discs distributed on both sides of the toothed column, the toothed column meshing with the first and second toothed discs respectively, a fixed rod fixedly mounted below the rotating rod, the fixed rod having multiple sets of equidistantly distributed first crushing blades, a slide frame slidably sleeved on the fixed rod, and the slide frame having multiple sets of equidistantly distributed second crushing blades, the multiple sets of second crushing blades corresponding to the first crushing blades, and a scraping mechanism including a scraper, the scraper being fitted against the inner wall of the extraction tank.
[0009] Preferably, a slide rod is fixedly installed inside the fixed rod, the slide frame is slidably sleeved with the slide rod, two sets of symmetrically distributed springs are sleeved on the slide rod, the two ends of the two sets of springs are fixedly connected to the slide frame and the fixed rod respectively, and a cam is rotatably installed on the fixed rod, and the cam is fitted with the slide frame.
[0010] Preferably, the scraping mechanism further includes a mounting rod fixedly mounted on the mounting cover, and a first telescopic rod is slidably mounted inside the mounting rod, and a second telescopic rod is slidably mounted inside the first telescopic rod, with the end of the second telescopic rod away from the mounting rod fixedly connected to the scraper.
[0011] Preferably, an installation ring is rotatably mounted inside the scraper, a toothed ring is sleeved on the installation ring, a drive wheel is rotatably mounted on the scraper and the drive wheel is meshed with the toothed ring, and a scraper block is fixedly mounted on the installation ring and is fitted against the lower surface of the scraper.
[0012] Preferably, the mounting rod has a threaded rod inside, which passes through the mounting rod and is rotatably connected to the mounting rod through a rolling bearing. The first telescopic rod has a threaded tube inside, which passes through the first telescopic rod and is rotatably connected to the first telescopic rod through a rolling bearing.
[0013] Preferably, the threaded rod passes through the first telescopic rod and is threadedly connected to the first telescopic rod, and the threaded tube passes through the second telescopic rod and is threadedly connected to the second telescopic rod.
[0014] Preferably, the threaded rod has two sets of symmetrically distributed keyways, and the threaded tube has two sets of symmetrically distributed key blocks, with the key blocks corresponding to the keyways. The threaded tube is slidably connected to the threaded rod through the key blocks.
[0015] (III) Beneficial Effects
[0016] Compared with the prior art, this utility model provides a plant negative pressure extraction device, which has the following beneficial effects:
[0017] The set stirring mechanism realizes bidirectional stirring of the raw materials waiting for negative pressure extraction in the extraction tank and crushing of some larger raw materials. The bidirectional stirring is based on the turbulent effect of alternating forward and reverse rotation, which simultaneously realizes the pre-crushing of large-particle raw materials and efficient dissociation of cell walls, thereby improving the mass transfer rate of active ingredients. At the same time, the set scraping mechanism removes the high-viscosity extract adhering to the inner wall of the extraction tank, reducing the waste of raw materials. It also cleans some of the solidified scale layer on the inner wall of the extraction tank, reducing cleaning costs and the frequency of manual intervention. Attached Figure Description
[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the internal structure of the extraction tank of this utility model;
[0021] Figure 3 This is a schematic diagram of the stirring mechanism of this utility model;
[0022] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the diagram;
[0023] Figure 5 This is a schematic diagram of the scraping mechanism of this utility model.
[0024] In the diagram: 1. Extraction tank; 2. Mounting frame; 3. Mounting cover; 4. Bottom cover; 5. Stirring mechanism; 501. Mounting base; 502. Rotating rod; 503. First gear plate; 504. Rotating frame; 505. Second gear plate; 506. Gear column; 507. Fixing rod; 508. First crushing blade; 509. Slide frame; 510. Second crushing blade; 511. Slide rod; 512. Spring; 513. Cam; 6. Scraping mechanism; 601. Mounting rod; 602. First telescopic rod; 603. Second telescopic rod; 604. Threaded rod; 605. Keyway; 606. Threaded pipe; 607. Key block; 608. Scraper; 609. Mounting ring; 610. Gear ring; 611. Drive wheel; 612. Scraper block. Detailed Implementation
[0025] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.
[0026] Figures 1-5 In one embodiment of this utility model, a plant negative pressure extraction device includes an extraction tank 1 and a mounting cover 3 installed above the extraction tank 1. A mounting bracket 2 is fixedly installed on the extraction tank 1, and a bottom cover 4 is threadedly fitted below the extraction tank 1. The mounting cover 3 is provided with a stirring mechanism 5 and a scraping mechanism 6016 for cleaning the extraction tank 1. The stirring mechanism 5 includes a mounting seat 501 rotatably mounted on the mounting cover 3, and a rotating rod 502 is rotatably mounted inside the mounting seat 501. A rotating frame 504 is rotatably mounted inside the rotating frame 504, and a rotating rod 502 passes through the rotating frame 504 and is rotatably connected to the rotating frame 504. A first geared disc 503 is fixedly sleeved on the rotating rod 502, and a second geared disc 505 is fixedly sleeved on the rotating frame 504. A gear post 506 is rotatably mounted inside the mounting base 501, and the first geared disc 503 and the second geared disc 505 are distributed on both sides of the gear post 506. The gear post 506 is meshed with the first geared disc 503 and the second geared disc 505 respectively. A gear is fixedly mounted below the rotating rod 502. The extraction tank 1 has a fixed rod 507 with multiple sets of equidistantly distributed first crushing blades 508. A slide 509 is slidably connected to the fixed rod 507, and multiple sets of equidistantly distributed second crushing blades 510 are provided on the slide 509. The multiple sets of second crushing blades 510 are corresponding to the first crushing blades 508. The scraping mechanism 6016 includes a scraper 608, which is fitted to the inner wall of the extraction tank 1. The set stirring mechanism 5 realizes bidirectional stirring of the raw materials waiting for negative pressure extraction in the extraction tank 1 and crushing of some larger raw materials. The bidirectional stirring is based on the turbulent effect of alternating forward and reverse rotation, which simultaneously realizes the pre-crushing of large-particle raw materials and efficient dissociation of cell walls, thereby improving the mass transfer rate of active ingredients. At the same time, the set scraping mechanism 6016 realizes the removal of high-viscosity extracts adhering to the inner wall of the extraction tank 1, reducing the waste of raw materials. It also realizes the cleaning of some solidified scale layers on the inner wall of the extraction tank 1, reducing cleaning costs and reducing the frequency of manual intervention.
[0027] In this embodiment, reference Figure 3 , Figure 4As shown, a slide rod 511 is fixedly installed inside the fixed rod 507. The slide frame 509 is slidably sleeved with the slide rod 511. Two sets of symmetrically distributed springs 512 are sleeved on the slide rod 511. The two ends of the two sets of springs 512 are fixedly connected to the slide frame 509 and the fixed rod 507, respectively. A cam 513 is rotatably installed on the fixed rod 507, and the cam 513 is fitted against the slide frame 509. When using this extraction device, the motor in the mounting base 501 drives the gear column 506 to rotate. The two sets of first gear discs 503 and second gear discs 505, which are meshed with the gear column 506, rotate synchronously in opposite directions in the mounting base 501, and drive the rotating rod 502 and the rotating frame 504, which are fixedly installed thereon, to rotate synchronously in opposite directions. The fixed rod 507 and the slide frame 509 are fixedly installed on the rotating frame 504 and the rotating rod 502. 9, along with the first crusher 508 and the second crusher 510, synchronously and bidirectionally stir the raw materials in the extraction tank 1. The motor in the synchronous fixed rod 507 drives the cam 513 to rotate. The cam 513 is fitted with the slide 509. During the rotation of the cam 513, it pushes the slide 509 to slide on the fixed rod 507. With the help of the slide rod 511 fixedly installed in the fixed rod 507 and the two sets of springs 512 symmetrically distributed on the slide rod 511, the slide 509 drives the second crusher 510 to slide up and down on the fixed rod 507. The second crusher 510 slides up and down relative to the corresponding first crusher 508, crushing the raw materials between them. This simultaneously achieves the pre-crushing of large-particle raw materials and the efficient dissociation of cell walls, thereby improving the mass transfer rate of active ingredients.
[0028] In this embodiment, reference Figure 5As shown, the scraping mechanism 6016 also includes a mounting rod fixedly mounted on the mounting cover 3, and a first telescopic rod 602 is slidably mounted inside the mounting rod. A second telescopic rod 603 is slidably mounted inside the first telescopic rod 602. The end of the second telescopic rod 603 away from the mounting rod is fixedly connected to the scraper 608. A mounting ring 609 is rotatably mounted inside the scraper 608, and a toothed ring 610 is sleeved on the mounting ring 609. A drive wheel 611 is rotatably mounted on the scraper 608, and the drive wheel 611 is meshed with the toothed ring 610. A scraper block 612 is fixedly mounted on the mounting ring 609, and the scraper block 612 is fitted against the lower surface of the scraper 608. The mounting rod contains a threaded rod 604, which passes through the mounting rod and is rotatably connected to it via a rolling bearing. The first telescopic rod 602 contains a threaded tube 606, which passes through the first telescopic rod 602 and is rotatably connected to it via a rolling bearing. The threaded rod 604 passes through the first telescopic rod 602 and is threadedly connected to it. The threaded tube 606 passes through the second telescopic rod 603 and is threadedly connected to it. The threaded rod 604 has two sets of symmetrically distributed keyways 605, and the threaded tube 606 contains two sets of symmetrically distributed key blocks 607. 607 and keyway 605 are correspondingly distributed. Threaded tube 606 is slidably connected to threaded rod 604 via key block 607. During the rotation of threaded rod 604 driven by the motor in the mounting rod on mounting cover 3, the first telescopic rod 602 slides in the mounting rod under the limiting action of the mounting rod, and drives the threaded tube 606, which is rotatably mounted on the first telescopic rod 602, to slide synchronously. Under the limiting action of key block 607 and keyway 605, threaded tube 606 rotates synchronously with threaded rod 604. Therefore, under the limiting action of the first telescopic rod 602, the second telescopic rod 603 slides in the first telescopic rod 602, driving scraper 6... 08 slides in the extraction tank 1 to remove the high-viscosity extract adhering to the inner wall of the extraction tank 1. Simultaneously, the motor on the scraper 608 drives the drive wheel 611 to rotate, which, in conjunction with the toothed ring 610, causes the mounting ring 609 to drive the scraper block 612 to rotate on the scraper 608. The scraper block 612, which is set in contact with the scraper 608, removes the extract adhering to the scraper 608, avoiding waste of raw materials and maintaining the cleaning function of the scraper 608. At the same time, after the plant raw material extraction is completed, the scraper 608 can effectively reduce cleaning costs and reduce the frequency of manual intervention by scraping off the solidified scale layer on the inner wall of the extraction tank 1.
[0029] In this embodiment, when the extraction device is used, the motor in the mounting base 501 drives the toothed column 506 to rotate. The two sets of first toothed discs 503 and second toothed discs 505, which are meshed with the toothed column 506, rotate synchronously in opposite directions in the mounting base 501, driving the rotating rod 502 and the rotating frame 504, which are fixedly mounted thereto, to rotate synchronously in opposite directions. The fixed rod 507, slide 509, first crushing blade 508 and second crushing blade 510 fixedly mounted on the rotating frame 504 and the rotating rod 502 perform synchronous bidirectional stirring of the raw material in the extraction tank 1. The motor in the synchronous fixed rod 507 drives the cam 513 rotates, and cam 513 is fitted into slide 509. During the rotation of cam 513, it pushes slide 509 to slide on fixed rod 507. This, in conjunction with slide rod 511 fixedly installed in fixed rod 507 and two sets of springs 512 symmetrically distributed on slide rod 511, enables slide 509 to drive the second crushing blade 510 to slide up and down on fixed rod 507. The second crushing blade 510 slides up and down relative to the corresponding first crushing blade 508, crushing the raw material between them. This simultaneously achieves pre-crushing of large-particle-size raw materials and efficient dissociation of cell walls, thus enhancing the activity of the material. As the component mass transfer rate increases, during the rotation of the threaded rod 604 driven by the motor in the mounting rod on the mounting cover 3, the first telescopic rod 602 slides within the mounting rod under the limiting action of the mounting rod, causing the threaded tube 606, which is rotatably mounted on the first telescopic rod 602, to slide synchronously. Under the limiting action of the key block 607 and the keyway 605, the threaded tube 606 rotates synchronously with the threaded rod 604. Therefore, under the limiting action of the first telescopic rod 602, the second telescopic rod 603 slides within the first telescopic rod 602, causing the scraper 608 to slide within the extraction tank 1. This facilitates the extraction... The high-viscosity extract adhering to the inner wall of tank 1 is removed. Simultaneously, the motor on scraper 608 drives the drive wheel 611 to rotate, which, in conjunction with the toothed ring 610, causes the mounting ring 609 to drive the scraper block 612 to rotate on scraper 608. The scraper block 612, which is set in contact with scraper 608, removes the extract adhering to scraper 608, avoiding waste of raw materials and maintaining the cleaning function of scraper 608. At the same time, after the plant raw material extraction is completed, the scraping of the solidified scale layer on the inner wall of extraction tank 1 by scraper 608 can effectively reduce cleaning costs and reduce the frequency of manual intervention.
[0030] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.
[0031] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A plant negative pressure extraction device, comprising an extraction tank (1) and an installation cover (3) mounted on top of the extraction tank (1), characterized in that: An installation bracket (2) is fixedly installed on the extraction tank (1), and a bottom cover (4) is threadedly connected to the bottom of the extraction tank (1). The installation cover (3) is equipped with a stirring mechanism (5) and a scraping mechanism (601) for cleaning the extraction tank (1). The stirring mechanism (5) includes a mounting base (501) rotatably mounted on a mounting cover (3), a rotating rod (502) rotatably mounted inside the mounting base (501), a rotating frame (504) rotatably mounted inside the mounting base (501), and the rotating rod (502) passing through the rotating frame (504) and rotatably connected to the rotating frame (504). A first toothed disc (503) is fixedly sleeved on the rotating rod (502), and a second toothed disc (505) is fixedly sleeved on the rotating frame (504). A toothed column (506) is rotatably mounted inside the mounting base (501), and the first toothed disc (503) and the second toothed disc (505) are distributed on both sides of the toothed column (506). The column (506) is meshed with the first toothed disc (503) and the second toothed disc (505) respectively. A fixed rod (507) is fixedly installed below the rotating rod (502). Multiple sets of first crushing blades (508) are provided on the fixed rod (507). A slide (509) is slidably sleeved on the fixed rod (507). Multiple sets of second crushing blades (510) are provided on the slide (509). The multiple sets of second crushing blades (510) are correspondingly arranged with the first crushing blades (508). The scraping mechanism (601) (6) includes a scraper (608). The scraper (608) is fitted to the inner wall of the extraction tank (1).
2. The plant negative pressure extraction device according to claim 1, characterized in that: A slide rod (511) is fixedly installed inside the fixed rod (507). The slide frame (509) is slidably connected to the slide rod (511). Two sets of symmetrically distributed springs (512) are sleeved on the slide rod (511). The two ends of the two sets of springs (512) are fixedly connected to the slide frame (509) and the fixed rod (507) respectively. A cam (513) is rotatably installed on the fixed rod (507), and the cam (513) is fitted to the slide frame (509).
3. The plant negative pressure extraction device according to claim 1, characterized in that: The scraping mechanism (601) (6) further includes a mounting rod fixedly installed on the mounting cover (3), and a first telescopic rod (602) is slidably installed inside the mounting rod. A second telescopic rod (603) is slidably installed inside the first telescopic rod (602). The end of the second telescopic rod (603) away from the mounting rod is fixedly connected to the scraper (608).
4. The plant negative pressure extraction device according to claim 1, characterized in that: An installation ring (609) is rotatably installed inside the scraper (608). A toothed ring (610) is sleeved on the installation ring (609). A drive wheel (611) is rotatably installed on the scraper (608), and the drive wheel (611) is meshed with the toothed ring (610). A scraper block (612) is fixedly installed on the installation ring (609), and the scraper block (612) is fitted against the lower surface of the scraper (608).
5. The plant negative pressure extraction device according to claim 3, characterized in that: The mounting rod is provided with a threaded rod (604), which passes through the mounting rod and is rotatably connected to the mounting rod through a rolling bearing. The first telescopic rod (602) is provided with a threaded tube (606), which passes through the first telescopic rod (602) and is rotatably connected to the first telescopic rod (602) through a rolling bearing.
6. The plant negative pressure extraction device according to claim 5, characterized in that: The threaded rod (604) passes through the first telescopic rod (602) and is threadedly connected to the first telescopic rod (602), and the threaded tube (606) passes through the second telescopic rod (603) and is threadedly connected to the second telescopic rod (603).
7. The plant negative pressure extraction device according to claim 5, characterized in that: The threaded rod (604) has two sets of symmetrically distributed keyways (605), and the threaded tube (606) has two sets of symmetrically distributed key blocks (607), with the key blocks (607) corresponding to the keyways (605). The threaded tube (606) is slidably connected to the threaded rod (604) through the key blocks (607).