Plant extraction and concentration device

Abstract

The invention provides a plant extraction and concentration device, relates to the technical field of plant extraction, and aims to solve the problems that a scraper scrapes the inner wall of an evaporation tank to prevent a concentrated solution from being coked, but after scraping, the concentrated solution slides down by virtue of the gravity of the concentrated solution, so that the concentrated solution is easily adhered to the side wall of an inner cavity of the evaporation tank for the second time to be coked again, and the cost is reduced. The device comprises the following components: a supporting base; the annular edge of the supporting base is fixedly connected with a concentration and evaporation tank vertically upwards through at least three supporting columns; and a circular supporting top table is arranged above the concentrating and evaporating tank. According to the invention, the concentrate can be scraped by the scraper and then quickly conveyed downwards by the concentrate conveying auger, and coking caused by the fact that the concentrate is adhered to the side wall of the inner cavity of the concentration and evaporation tank for a long time is avoided, so that the output rate of the plant concentrate is increased, the income is increased, the cleaning period of the concentration and evaporation tank can be shortened, and the maintenance frequency is reduced.

Description

Technical Field

[0001] This invention relates to the field of plant extraction technology, and in particular to a plant extraction concentration device. Background Technology

[0002] For the concentration of plant extracts, steam-heated, internally circulating, single-effect low-temperature distillation and concentration equipment is widely used. During operation, a vacuum pump first creates a certain vacuum environment inside the equipment to lower the boiling point of the material. As the pressure inside the equipment increases with the evaporation of the plant extract, the vacuum pump operates intermittently, ensuring a constant vacuum environment and allowing the plant extract to be concentrated at a lower temperature. For example, a low-temperature vacuum concentration device for plant extracts is described in patent application CN202211179471.4. This device includes an evaporator with an inlet pipe inserted through the rear wall. Multiple atomizing nozzles are connected to one end of the inlet pipe inside the evaporator, arranged in a ring. A heating shroud is rotatably fitted onto the portion of the inlet pipe inside the evaporator. When evaporating plant extracts, the extracts are sprayed onto the inner wall of the heating hood through an atomizing nozzle on the inlet pipe. The atomizing nozzle atomizes the extracts into a thin layer, and the nozzle rotates under the influence of the inlet pipe, resulting in a more uniform spray of the extracts onto the inner wall of the heating hood. Therefore, the heating hood can rapidly and evenly evaporate the extracts sprayed onto its inner wall, thereby improving the evaporation efficiency of the plant extracts.

[0003] Existing plant extract evaporation and concentration equipment uses scrapers to clean the inner wall of the evaporator to prevent charring of the concentrate. However, after scraping, the concentrate slides down due to its own gravity, making it easy for it to re-adhere to the inner wall of the evaporator, leading to re-charring and thus reducing the concentrate yield. Summary of the Invention

[0004] In view of this, the present invention provides a plant extract concentration device to solve the problem that, although existing plant extract evaporation and concentration equipment also uses a scraper to scrape the inner wall of the evaporation tank to prevent the concentrate from charring, after scraping, the concentrate slides down by its own gravity, making it easy for the concentrate to adhere to the inner wall of the evaporation tank again, resulting in re-charring and thus reducing the concentrate yield.

[0005] This invention provides a plant extraction and concentration device, specifically comprising: a support base; a concentration evaporator is vertically and upwardly fixedly connected to the circumference of the support base via at least three support columns; a circular support top platform is located above the concentration evaporator; a control box and a reduction motor are provided at the upper end of the support top platform; a transmission shaft is vertically and rotatably mounted in the middle of the inner cavity of the concentration evaporator and the support top platform, the upper end of the transmission shaft is rotatably connected to the reducer head of the reduction motor, and a scraper is fixedly connected to the transmission shaft at the lower middle part of the inner cavity of the concentration evaporator; a steam coil is coiled in a ring around the outer wall of the concentration evaporator.

[0006] Optionally, the concentrating evaporator is an inverted conical structure. A light condensing tray is connected to the outer edge of the upper circumference of the concentrating evaporator. The upper end of the light condensing tray is flush with the upper end of the concentrating evaporator. Three light discharge pipes are distributed in a ring around the bottom of the light condensing tray. A one-way pressure reducing valve is provided at the lower end of each light discharge pipe to collect the light components produced by the evaporation and concentration of the plant extract, allowing the light components to condense and be collected in the light condensing tray. A condensate pipe can also be coiled around the outside of the light condensing tray to accelerate condensation and discharge the condensed light components. A truncated cone-shaped upper condensing hood, narrower at the top and wider at the bottom, is connected upwards to the upper edge of the light condensing tray. The upper end of the upper condensing hood is fixedly connected to the lower end of the supporting top platform. The lower end of the concentrating evaporator is connected to a... A connected cylindrical concentrate collection cup has a concentrate discharge pipe at its lower edge, angled outwards and downwards. The concentrate collection cup collects the liquid produced by evaporation and concentration, and the liquid is discharged through the discharge pipe. A truncated cone-shaped shaft connector, narrower at the top and wider at the bottom, is vertically positioned in the middle of the concentrate collection cup. The lower end of a drive shaft is rotatably inserted into this connector. This design allows for the diversion of the concentrated liquid flowing downwards during the rotation of the drive shaft, preventing it from accumulating at the point of rotation and causing it to char due to friction. An annular guide ring is located near the upper edge of the inner wall of the evaporator's cavity. Above the guide ring, an annular toothed ring is located on the inner wall of the evaporator's cavity, with teeth on its inner edge.

[0007] Optionally, the upper part of the drive shaft is hollow, and an inlet hole is provided at the upper end of the drive shaft. The lower end of the hollow part of the drive shaft is a regular hexagonal columnar plant extract buffer tank. Six atomizing spray pipes are provided on the outer wall of the plant extract buffer tank. Three atomizing spray pipes are arranged as a group, and two groups are arranged in an alternating manner. The atomizing spray pipes in the same group are distributed in a ring and are inclined downwards. After the plant extract enters the plant extract buffer tank, it can be sprayed onto the inner wall of the concentration evaporator through the atomizing spray pipes. Since the atomizing spray pipes and the drive shaft are an integral structure, the atomizing spray pipes can rotate synchronously during the rotation of the drive shaft, so that they can be evenly sprayed onto the inner wall of the concentration evaporator. This allows the inner wall of the concentration evaporator, which is in a high-temperature state, to quickly evaporate and concentrate the plant extract, thereby improving the evaporation and concentration effect of the plant extract.

[0008] Optionally, the lower end of the scraper frame has three triangular supporting connecting arms arranged in a ring. The lower end of each supporting connecting arm is connected to a scraper seat parallel to the inner wall of the evaporator. The scraper seat has a "U"-shaped structure, with its upper end slidably tangent to the guide rail ring and its lower end tangent to the inner wall of the evaporator. A follower shaft is rotatably mounted on the lower end of the scraper frame near the evaporator. A follower gear is fixedly mounted on the upper end of the follower shaft, which extends out of the scraper frame and meshes with a gear ring. A concentrate conveying auger is mounted on the follower shaft below the scraper frame. The bottom of the concentrate conveying auger is tangent to the inner wall of the evaporator, which can drive the follower shaft to rotate. The rotation of the follower shaft drives the concentrate conveying auger to rotate, so that the concentrate can be scraped off by the scraper and then quickly conveyed downwards by the concentrate conveying auger, avoiding... This design prevents prolonged adhesion and charring of the concentrate to the inner wall of the evaporator, thereby increasing the yield of plant concentrate, improving profitability, and reducing the cleaning cycle and maintenance frequency of the evaporator. The scraper frame has a groove at the end away from the follower shaft, in which a scraper is slidably mounted. Two guide rods are symmetrically mounted on the upper end of the scraper, with their upper ends vertically slidably inserted into the scraper frame. Springs are fitted onto the guide rods on the scraper. The scraper has an arc-shaped structure curved towards the side where the auger is located, and its bottom is always tangent to the inner wall of the evaporator. This allows the scraper to self-adjust, preventing the scraper from being fixed in position and unable to contact the inner wall for scraping the concentrate. This ensures that the concentrate is always scraped off, reducing the likelihood of concentrate sticking to the wall and charring.

[0009] This invention provides a plant extract concentration device, the beneficial effects of which are: 1. In this invention, during the rotation of the scraper frame with the drive shaft, the follower gear meshes with the gear ring, which drives the follower shaft to rotate. The rotation of the follower shaft drives the concentrate conveying auger to rotate, so that the concentrate can be scraped off by the scraper and then quickly conveyed downward by the concentrate conveying auger. This avoids the concentrate from adhering to the inner wall of the concentration evaporator for a long time and charring, thereby improving the yield of plant concentrate, increasing profits, and also reducing the cleaning cycle of the concentration evaporator and reducing the frequency of maintenance.

[0010] 2. In this invention, the bottom of the scraper is always tangent to the inner wall of the evaporator, which gives the scraper self-adjustment capability. This avoids the problem that the scraper is fixed in position and cannot contact the inner wall of the evaporator to scrape off the concentrate, thus ensuring that the concentrate can always be scraped off and reducing the probability of the concentrate sticking to the wall and coking.

[0011] 3. In this invention, after the plant extract enters the plant extract buffer tank, it can be sprayed onto the inner wall of the concentration evaporator through an atomizing spray pipe. Since the atomizing spray pipe and the drive shaft are integrated, the atomizing spray pipe can rotate synchronously during the rotation of the drive shaft, thereby spraying evenly onto the inner wall of the concentration evaporator. This allows the plant extract to be rapidly evaporated and concentrated on the inner wall of the concentration evaporator, which is in a high-temperature state, thus improving the evaporation and concentration effect of the plant extract.

[0012] 4. In this invention, the middle of the concentrate collection cup is provided with a truncated cone-shaped shaft connector that is narrow at the top and wide at the bottom. The lower end of the drive shaft is rotatably inserted into the shaft connector. During the rotation of the drive shaft, the concentrate flowing down from above can be diverted, which can prevent the concentrate from accumulating at the rotation point of the drive shaft and causing the concentrate to be charred due to friction.

[0013] 5. In this invention, a lightweight condensing tray is connected to the outer side of the upper ring edge of the concentration evaporator to receive the lightweight components produced by the evaporation and concentration of plant extracts, so that the lightweight components can be condensed and collected in the lightweight condensing tray. A condensate pipe can also be coiled around the outside of the lightweight condensing tray to accelerate condensation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0015] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0016] In the attached diagram: Figure 1 This is a schematic diagram of the upper right front axis structure according to an embodiment of the present invention.

[0017] Figure 2This is a schematic diagram of the lower left rear axis structure of an embodiment of the present invention.

[0018] Figure 3 This is an axial view of the structure of the support top platform in the removed state according to an embodiment of the present invention.

[0019] Figure 4 This is an embodiment of the present invention. Figure 3 Schematic diagram of the A-section of the middle section.

[0020] Figure 5 This is a lower axial view schematic diagram of an embodiment of the present invention, showing the separation of the upper condenser hood and the concentration evaporator.

[0021] Figure 6 This is a schematic diagram of the structure of the concentration evaporator in the state of removing the upper condenser hood according to an embodiment of the present invention.

[0022] Figure 7 This is a schematic diagram of the first lower axis structure of the scraper frame according to an embodiment of the present invention.

[0023] Figure 8 This is a schematic diagram of the second lower axis structure of the scraper frame according to an embodiment of the present invention.

[0024] Figure 9 This is a schematic diagram of the third lower axis structure of the scraper frame according to an embodiment of the present invention.

[0025] Figure 10 This is an axial view structural diagram of the scraper frame and scraper section in a separated state according to an embodiment of the present invention.

[0026] List of reference numerals 1. Support base; 2. Concentrated evaporator; 201. Lightweight condenser tray; 20101. Lightweight discharge pipe; 202. Upper condenser hood; 203. Concentrate collection cup; 20301. Concentrate discharge pipe; 20302. Shaft connector; 204. Guide rail ring; 205. Gear ring; 3. Support top platform; 4. Control box; 5. Gear motor; 6. Drive shaft; 601. Liquid inlet; 602. Plant extract buffer tank; 603. Atomizing spray pipe; 7. Steam coil; 8. Scraper frame; 801. Support connecting arm; 802. Scraper seat; 803. Follower shaft; 80301. Follower gear; 80302. Concentrate conveying auger; 804. Knife groove; 805. Scraper; 80501. Guide rod; 80502. Spring. Detailed Implementation

[0027] To make the objectives, solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention.

[0028] Please refer to Figures 1 to 10 As shown: Example 1

[0029] This invention provides a plant extract concentration device, including a support base 1; a concentration evaporator 2 is vertically and fixedly connected to the circumference of the support base 1 by at least three support columns; a circular support top platform 3 is located above the concentration evaporator 2; a control box 4 and a reduction motor 5 are provided at the upper end of the support top platform 3; a transmission shaft 6 is vertically and rotatably installed in the middle of the inner cavity of the support top platform 3 and the concentration evaporator 2, the upper end of the transmission shaft 6 is rotatably connected to the reducer head of the reduction motor 5, and a scraper 8 is fixedly connected to the transmission shaft 6 at the lower middle part of the inner cavity of the concentration evaporator 2; a steam coil 7 is coiled in a ring on the outer wall of the concentration evaporator 2, which can be used for heating to facilitate the evaporation and concentration of the plant extract.

[0030] The evaporator 2 is an inverted conical structure. A light condensing tray 201 is attached to the outer edge of the upper circumference of the evaporator 2 to collect the light components produced by the evaporation and concentration of the plant extract. This allows the light components to condense and be collected in the light condensing tray 201. A condensate pipe can also be coiled around the outside of the light condensing tray 201 to accelerate condensation. The upper end of the light condensing tray 201 is flush with the upper end of the evaporator 2. Three light discharge pipes 20101 are distributed in a ring at the bottom of the light condensing tray 201. The lower end of 0101 is equipped with a one-way pressure reducing valve head for discharging condensed light components from the light condensation tray 201; the upper edge of the light condensation tray 201 is connected to an upward-facing truncated cone-shaped upper condensation hood 202, which is narrower at the top and wider at the bottom, to block the light components and allow them to condense along the inner wall of the cavity and slide down to the light condensation tray 201. The upper end of the upper condensation hood 202 is fixedly connected to the lower end of the supporting top platform 3; the lower end of the concentration evaporator 2 is connected to a connected cylindrical concentrate collection cup 203. At the lower edge of component 03, a concentrate discharge pipe 20301 is provided at an angled outward and downward. The liquid produced by evaporation and concentration can be collected through the concentrate collection cup 203 and discharged through the concentrate discharge pipe 20301. A truncated cone-shaped shaft connector 20302, narrow at the top and wide at the bottom, is vertically positioned at the middle of the concentrate collection cup 203. The lower end of the drive shaft 6 is rotatably inserted into the shaft connector 20302. This allows the concentrated liquid flowing down from above to be diverted during the rotation of the drive shaft 6, preventing the concentrated liquid from converging. At the point where the drive shaft 6 rotates, the concentrate is subjected to friction and cokes. An annular guide rail ring 204 is provided on the inner wall of the concentrated evaporator 2 near the upper edge. An annular toothed ring 205 is provided on the inner wall of the concentrated evaporator 2 above the guide rail ring 204. The inner ring edge of the toothed ring 205 is provided with teeth. The scraper seat 802 can be guided to slide along the inner wall of the concentrated evaporator 2 through the rail ring 204. The toothed ring 205 enables the follower shaft 803 on the scraper seat 802 to rotate through the meshing of the follower gear 80301 with the toothed ring 205.

[0031] The drive shaft 6 has a hollow structure in the upper middle part, and a liquid inlet 601 is opened at the upper end of the drive shaft 6. The upper end of the drive shaft 6 is connected to the external plant extract delivery pipe. The lower end of the hollow part of the drive shaft 6 is a regular hexagonal columnar plant extract buffer tank 602. The outer wall of the plant extract buffer tank 602 is equipped with six atomizing spray pipes 603. Three atomizing spray pipes 603 form a group, and there are two groups that are staggered vertically. The atomizing spray pipes 603 in the same group are distributed in a ring, and the atomizing spray pipes 603 are inclined downwards. In this state, after the plant extract enters the plant extract buffer tank 602, it can be sprayed onto the inner wall of the concentrator evaporator 2 through the atomizing spray pipe 603. Since the atomizing spray pipe 603 and the drive shaft 6 are integrated, the atomizing spray pipe 603 can rotate synchronously during the rotation of the drive shaft 6, so that it can be evenly sprayed onto the inner wall of the concentrator evaporator 2. This allows the plant extract to be rapidly evaporated and concentrated on the inner wall of the concentrator evaporator 2, which is in a high-temperature state, thereby improving the evaporation and concentration effect of the plant extract.

[0032] The scraper frame 8 has three triangular support connecting arms 801 arranged in a ring at its lower end. The lower ends of the support connecting arms 801 are connected to scraper seats 802 parallel to the inner wall of the concentration evaporator 2. The scraper seats 802 have a "U"-shaped structure; the upper end of the scraper seats 802 is slidably tangent to the guide rail ring 204, and the lower end of the scraper seats 802 is tangent to the inner wall of the concentration evaporator 2. A follower shaft 803 is rotatably mounted on the lower end of the scraper frame 8 near the concentration evaporator 2. A follower gear 80301 is fixedly mounted on the upper end of the follower shaft 803, which extends out of the scraper frame 8. The follower gear 80301 meshes with a gear ring 205. A concentration evaporator is located on the follower shaft 803 below the scraper frame 8. The bottom of the auger 80302 is tangential to the inner wall of the evaporator 2. As the scraper 8 rotates with the drive shaft 6, the follower gear 80301 meshes with the gear ring 205, which drives the follower shaft 803 to rotate. The rotation of the follower shaft 803 drives the auger 80302 to rotate, so that the concentrate can be scraped off by the scraper 805 and then quickly conveyed downward by the auger 80302. This avoids the concentrate from adhering to the inner wall of the evaporator 2 for a long time and charring, thereby improving the yield of plant concentrate, increasing profits, and reducing the cleaning cycle and maintenance frequency of the evaporator 2. Example 2

[0033] This invention provides a plant extraction and concentration device, which further includes a blade groove 804 on the end of the scraper frame 8 away from the follower shaft 803. A scraper 805 is slidably installed in the blade groove 804. Two guide rods 80501 are symmetrically installed on the upper end of the scraper 805. The upper ends of the guide rods 80501 are vertically slidably inserted into the scraper frame 8. Springs 80502 are fitted on the guide rods 80501 on the scraper 805. The scraper 805 is an arc-shaped structure that is bent on the side where the auger 80302 for conveying the concentrate is located. The bottom of the scraper 805 is always tangent to the inner wall of the concentration evaporator 2, so that the scraper 805 has an adaptive adjustment capability. This avoids the problem that the scraper 805 is fixed in position and cannot contact the inner wall of the concentration evaporator 2 to scrape off the concentrate, thereby ensuring that the concentrate can always be scraped off and reducing the probability of the concentrate sticking to the wall and charring.

[0034] The specific usage and function of this embodiment: During use, the external plant extract delivery pipe is connected to the upper end of the drive shaft 6, and the reduction motor 5 is turned on, causing the drive shaft 6 to rotate. The upper part of the middle of the drive shaft 6 is hollow, and an inlet hole 601 is opened at the upper end of the drive shaft 6. The upper end of the drive shaft 6 is connected to the external plant extract delivery pipe. The lower end of the hollow part of the drive shaft 6 is a regular hexagonal columnar plant extract buffer tank 602. Six atomizing spray pipes 603 are provided on the outer wall of the plant extract buffer tank 602. Three atomizing spray pipes 603 are grouped together and are arranged in an alternating pattern. Two sets of atomizing spray pipes 603 are arranged in a ring within the same set, and the atomizing spray pipes 603 are inclined downwards. After the plant extract enters the plant extract buffer tank 602, it can be sprayed onto the inner wall of the concentrator evaporator 2 through the atomizing spray pipes 603. Since the atomizing spray pipes 603 and the drive shaft 6 are integrated, the atomizing spray pipes 603 can rotate synchronously during the rotation of the drive shaft 6. As the scraper 8 rotates with the drive shaft 6, the follower gear 80301 meshes with the gear ring 205, which can drive the follower shaft 803 to rotate. The rotation of the follower shaft 803 can drive the concentrate conveying winch. The auger 80302 rotates, allowing the concentrate to be scraped off by the scraper 805 and then rapidly conveyed downwards by the concentrate conveyor 80302. The light liquid produced during the concentration of the plant extract will condense at the upper light condensation tray 201. The concentration evaporator 2 has an inverted conical structure, with the light condensation tray 201 attached to the outer edge of its upper circumference. This tray receives the light components produced during the evaporation and concentration of the plant extract, facilitating their condensation and collection. A condensate pipe can also be coiled around the outside of the light condensation tray 201 to accelerate condensation. The upper end of the tray 201 is flush with the upper end of the evaporating tank 2. Three light discharge pipes 20101 are distributed in a ring at the bottom of the light condensing tray 201. The lower end of the light discharge pipe 20101 is equipped with a one-way pressure reducing valve head for discharging the condensed light components in the light condensing tray 201. The lower end of the evaporating tank 2 is connected to a columnar concentrate collection cup 203. The lower edge of the concentrate collection cup 203 is inclined outward and downward with a concentrate discharge pipe 20301. The liquid produced by evaporation and concentration can be collected through the concentrate collection cup 203 and discharged through the concentrate discharge pipe 20301.

Claims

1. A plant extract concentration apparatus, comprising: A support base (1); a concentration evaporator (2) is vertically and fixedly connected to the ring edge of the support base (1) by at least three support columns; a circular support top platform (3) is above the concentration evaporator (2); a control box (4) and a reduction motor (5) are provided at the upper end of the support top platform (3); characterized in that a transmission shaft (6) is vertically and rotatably installed in the middle of the inner cavity of the support top platform (3) and the concentration evaporator (2), the upper end of the transmission shaft (6) is rotatably connected to the reducer head of the reduction motor (5), and a scraper (8) is fixedly connected to the lower part of the middle of the inner cavity of the concentration evaporator (2); a steam coil (7) is coiled in a ring on the outer wall of the concentration evaporator (2); the upper part of the middle of the transmission shaft (6) is a hollow structure, and an inlet hole (601) is opened at the upper end of the transmission shaft (6); the lower end of the hollow part of the transmission shaft (6) is a regular hexagonal columnar plant extract buffer tank (602).

2. The plant extraction and concentration device according to claim 1, characterized in that: The concentration evaporator (2) is an inverted cone-shaped structure. A light condensing tray (201) is connected to the outer side of the upper ring edge of the concentration evaporator (2). The upper end of the light condensing tray (201) is flush with the upper end of the concentration evaporator (2). Three light discharge pipes (20101) are distributed in a ring at the bottom of the light condensing tray (201). A one-way pressure reducing valve head is provided at the lower end of the light discharge pipe (20101).

3. The plant extraction and concentration device according to claim 2, characterized in that: The lightweight condenser tray (201) has an upper condenser cover (202) that is narrower at the top and wider at the bottom, which is connected to the upper circumference. The upper end of the upper condenser cover (202) is fixedly connected to the lower end of the support top platform (3).

4. The plant extraction and concentration device according to claim 1, characterized in that: The lower end of the concentration evaporator (2) is connected to a columnar concentrate collection cup (203), and the lower end of the concentrate collection cup (203) is provided with a concentrate discharge pipe (20301) that slopes outward and downward.

5. The plant extraction and concentration apparatus according to claim 4, characterized in that: The middle part of the concentrate collection cup (203) is provided with a truncated cone-shaped shaft connector (20302) that is narrow at the top and wide at the bottom, and the lower end of the drive shaft (6) is rotatably inserted into the shaft connector (20302).

6. The plant extraction and concentration device according to claim 1, characterized in that: The inner wall of the evaporator (2) is provided with an annular guide rail ring (204) near the upper edge. The inner wall of the evaporator (2) above the guide rail ring (204) is provided with an annular toothed ring (205), and the inner ring edge of the toothed ring (205) is provided with teeth.

7. The plant extraction and concentration device according to claim 1, characterized in that: The outer wall of the plant extract buffer tank (602) is provided with six atomizing spray pipes (603). Three atomizing spray pipes (603) form a group, and there are two groups that are staggered vertically. The atomizing spray pipes (603) in the same group are distributed in a ring, and the atomizing spray pipes (603) are inclined downwards.

8. The plant extraction and concentration apparatus according to claim 6, characterized in that: Three triangular support connecting arms (801) are annularly distributed at the lower end of the scraping frame (8). The lower end of the support connecting arm (801) is butted with a scraper seat (802) parallel to the inner cavity side wall of the concentration evaporation tank (2). The scraper seat (802) is of a "冂"-shaped structure. The upper end of the scraper seat (802) is slidably tangent to the guide rail ring (204), and the lower end of the scraper seat (802) is tangent to the inner cavity side wall of the concentration evaporation tank (2). A follower shaft (803) is rotatably installed at the lower end of the scraping frame (8) near one end of the concentration evaporation tank (2). A follower gear (80301) is fixedly provided on the part of the upper end of the follower shaft (803) that penetrates through the scraping frame (8). The follower gear (80301) meshes with the toothed ring (205). A concentrate conveying auger (80302) is provided on the follower shaft (803) below the scraping frame (8). The bottom of the concentrate conveying auger (80302) is tangent to the inner cavity side wall of the concentration evaporation tank (2).

9. The plant extraction and concentration apparatus according to claim 8, characterized in that: A knife groove (804) is provided at one end of the scraping frame (8) far from the follower shaft (803). A scraper (805) is slidably installed in the knife groove (804). Two guide rods (80501) are symmetrically installed at the upper end of the scraper (805). The upper ends of the guide rods (80501) are vertically and slidably inserted into the scraping frame (8). A spring (80502) is sleeved on the guide rod (80501) of the scraper (805). The scraper (805) is of an arc-shaped structure bent toward the side where the concentrate conveying auger (80302) is located. The bottom of the scraper (805) is always tangent to the inner cavity side wall of the concentration evaporation tank (2).

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