Bamboo polyphenol extraction device

Abstract

The invention discloses a bamboo polyphenol extraction device, and relates to the technical field of natural product extraction, the bamboo polyphenol extraction device comprises a stirring barrel, a liquid storage tank, a stirring assembly, a heating assembly and a filtering assembly; a liquid passing pipe is arranged between the stirring barrel and the liquid storage tank, and a blocking block is arranged in the stirring space; the stirring assembly comprises a first driving part and a stirring paddle; the stirring paddle is rotationally connected with the stirring barrel; the first driving part is used for driving the stirring paddle to rotate; the heating assembly comprises a heating piece and a heat conducting piece; the heating piece is arranged on the stirring barrel, the heat conduction piece is arranged on the stirring paddle, and the heating piece is connected with the heat conduction piece; and the filtering assembly is arranged in the liquid passing pipe. The bamboo polyphenol extraction device can effectively promote the contact reaction between the solvent and the bamboo wood, and can conveniently filter the extracting solution to obtain the required filtrate, so that the extraction efficiency and effect of the bamboo polyphenol can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of natural product extraction, and in particular to a bamboo polyphenol extraction device. Background Art

[0002] With the rapid development of natural product extraction technology, bamboo polyphenols, as a natural compound with multiple biological activities such as antioxidant, antibacterial and anti-inflammatory, have been widely used in food, medicine, cosmetics and other fields.

[0003] At present, common methods for extracting bamboo polyphenols include ultrasonic extraction, microwave extraction, supercritical fluid extraction, reflux extraction and stirring extraction, etc. Among them, stirring extraction is a traditional bamboo polyphenol extraction method, which enhances the contact between the solvent and the bamboo material through mechanical stirring, thereby promoting the dissolution of bamboo polyphenols.

[0004] However, the existing devices for stirring and extracting bamboo polyphenols generally have the problems of large stirring blind area and low extraction efficiency, and after the bamboo polyphenol extraction is completed, the extract needs to be transferred to other devices for filtration, which is labor-consuming and time-consuming. It can be seen that there are defects of low efficiency and limited effect in the process of stirring and extracting bamboo polyphenols, so it is urgent to improve this. Summary of the invention

[0005] The present application provides a bamboo polyphenol extraction device, which can effectively promote the contact reaction between the solvent and the bamboo material, and can also facilitate filtering the extract to obtain the desired filtrate, thereby effectively improving the extraction efficiency and effect of the bamboo polyphenols.

[0006] The present application provides a bamboo polyphenol extraction device, which adopts the following technical solution: A bamboo polyphenol extraction device comprises a stirring barrel, a liquid storage tank, a stirring component, a heating component and a filtering component; The stirring barrel has a stirring space inside, the liquid storage tank is located below the stirring barrel and has a liquid storage space inside, a liquid pipe for connecting the stirring space and the liquid storage space is provided between the stirring barrel and the liquid storage tank, and a block for controlling the opening and closing of the opening of the liquid pipe close to one end of the stirring space is provided in the stirring space; The stirring assembly includes a first driving member and a stirring paddle; the stirring paddle is located in the stirring space and is rotatably connected to the stirring barrel, the rotation axis of the stirring paddle coincides with the axis of the stirring barrel, the stirring paddle keeps in contact with the inner wall of the stirring space during rotation, and drives the material in the stirring space to surge upward during rotation; the first driving member is disposed on the stirring barrel and is used to drive the stirring paddle to rotate; The heating assembly comprises a heating element and a heat-conducting element; the heating element is arranged on the stirring barrel, the heat-conducting element is arranged on the stirring paddle, and the heating element is connected to the heat-conducting element; The filtering component is arranged inside the liquid passage pipe and is used for filtering impurities in the extract to obtain a filtrate.

[0007] By adopting the above technical scheme, it is possible to effectively promote the bamboo powder and the solvent to fully contact and react at a certain temperature, make the temperature effect distribution more uniform, and reduce the precipitation of solid matter in the stirring space. It is also possible to facilitate filtering the extract after the reaction of the bamboo powder and the solvent is completed, so that the required filtrate can be stored in the liquid storage tank, thereby effectively improving the extraction efficiency and effect of bamboo polyphenols.

[0008] Optionally, a second driving member is further included, and a resilient corrugated member is disposed at the bottom of the mixing barrel; The liquid passage is movably connected to the liquid storage tank, and the second driving member is disposed on the liquid storage tank and is used to drive the liquid passage to move; The blocking block is arranged at the bottom of the stirring paddle; the outer side of the corrugated member is connected to the bottom of the stirring barrel, and the inner side of the corrugated member is connected to the top of the liquid passage; When the liquid pipe moves upward to the limit position, the blocking block blocks the liquid pipe; when the liquid pipe moves downward to the limit position, the liquid pipe is communicated with the stirring space, and the corrugated part is narrowed toward the direction close to the liquid storage tank.

[0009] By adopting the above technical solution, after the reaction between the bamboo powder and the solvent is completed, the extract can be easily guided by the tapered bellows to enter the liquid passage pipe, thereby reducing the residual substances in the stirring space and facilitating the subsequent staff to clean the inside of the stirring barrel to effectively avoid cross infection.

[0010] Optionally, the bottom of the stirring paddle has a plurality of scraping claws; When the liquid passage moves upward to the extreme position, the corrugated member is folded to form a plurality of grooves matched with the scraper claws; when the liquid passage moves downward to the extreme position, the corrugated member is unfolded and the grooves disappear.

[0011] By adopting the above technical solution, during the stirring and extraction process, the solid matter precipitated at the bottom of the stirring space can be concentrated and accumulated in the groove formed by the corrugated member, and the scraper claws can stir the accumulated solid matter, thereby further reducing the influence of the solid matter precipitation on the stirring and extraction effect and efficiency; at the same time, in the process of the corrugated member guiding the extraction liquid into the liquid passage pipe, the probability of impurities staying on the surface of the corrugated member can be effectively reduced.

[0012] Optionally, one side of the scraper claw has a guiding surface for guiding the material to move upward, and during the rotation of the stirring paddle, the guiding surface contacts the material in the groove.

[0013] By adopting the above technical solution, the effect of the scraper member in stirring the solid matter accumulated in the groove can be effectively improved, thereby further promoting the full contact reaction between the bamboo powder and the solvent in the stirring space.

[0014] Optionally, the scraper claw is movably connected to the stirring paddle, and the scraper claw moves downward after being heated.

[0015] By adopting the above technical solution, the scraper claw can effectively ensure its stirring effect on the solid matter accumulated in the groove after being affected by the heating component, and at the same time can make the scraper claw have the effect of cleaning the groove, further reducing the probability of subsequent impurities remaining on the surface of the corrugated part.

[0016] Optionally, the filter assembly includes a filter layer, a plurality of transmission rollers and a third driving member; The transmission roller is rotatably connected to the liquid pipe and is located inside the liquid pipe, and the rotation axis coincides with its own axis and is horizontal; the third driving member is arranged outside the liquid pipe, and is used to drive multiple transmission rollers to rotate synchronously and in the same direction; the filter layer is a flexible belt structure that is connected end to end, which is simultaneously wound around multiple transmission rollers and has multiple filter holes evenly distributed, and it can form an interception inside the liquid pipe.

[0017] By adopting the above technical scheme, the extract can pass through the two filter layers in succession while flowing through the liquid passing pipe under the action of its own gravity, and filter the impurities mixed in the extract through the filter holes, thereby effectively improving the purity of the filtrate stored in the liquid storage space; at the same time, the filter layer continues to move during its filtering effect, so that the position on the filter layer that has a filtering effect on the extract is constantly changing, so as to reduce the probability of affecting the filtering effect of the filter layer due to the clogging of some filter holes by impurities.

[0018] Optionally, the filter assembly further includes a cleaning piece, the liquid passage pipe is provided with a material collecting groove on one side of the filter layer and is movably provided with a cover for controlling the opening and closing of the material collecting groove; The space above the filter layer is communicated with the aggregate trough, and the filter layer moves to send impurities into the aggregate trough; one end of the cleaning piece is connected to the liquid pipe and the other end is in contact with the filter layer, and the cleaning piece blocks the position where the aggregate trough is communicated with the space below the filter layer.

[0019] By adopting the above technical solution, the cleaning piece can effectively remove impurities attached to the surface of the filter layer, and the removed impurities can be located in the aggregate trough, making it convenient for the staff to open the cover body and clean them later.

[0020] Optionally, a plurality of clearing protrusions are evenly distributed on the surface of the driving roller, and the clearing protrusions are used to be inserted into the filter holes on the filter layer.

[0021] By adopting the above technical solution, when the transmission roller drives the filter layer to move, the clearing protrusion can clear the filter holes on the part of the filter layer that contacts the transmission roller, and the impurities after clearing can also be collected in the aggregate trough.

[0022] Optionally, a plurality of filter assemblies are provided, and the plurality of filter assemblies are vertically distributed on the liquid passage pipe; In the plurality of filter components, the sizes of the filter holes on the plurality of filter layers gradually decrease toward the direction approaching the liquid storage tank.

[0023] By adopting the above technical solution, the extract can be subjected to multiple and gradually increasing filtering effects during the process of passing through the liquid passage pipe, thereby further improving the effect of filtering the extract to obtain the desired filtrate.

[0024] Optionally, a rotating disk for contacting the block is rotatably provided at the top of the liquid passage, and the rotation axis of the rotating disk coincides with its own axis and with the axis of the stirring paddle.

[0025] By adopting the above technical solution, the stirring paddle can be easily rotated when the top of the liquid pipe is blocked by the block. The rotating disk rotates with the stirring paddle, and the impurities accumulated in the corner formed between the block and the rotating disk can be moved outward under the action of centrifugal force, thereby further reducing the stirring blind area.

[0026] In summary, the present application includes at least one of the following beneficial effects: 1. It can effectively promote the contact reaction between the solvent and the bamboo powder, and at the same time, it can facilitate the filtration of the extract to obtain the desired filtrate, thereby effectively improving the extraction efficiency and effect of bamboo polyphenols; 2. It can effectively reduce the stirring blind area, thereby further promoting the contact reaction between the solvent and the bamboo powder, and improving the extraction effect by heating; 3. It can effectively improve the effect and efficiency of filtering the required filtrate from the extract, and at the same time can effectively reduce the impact of impurity accumulation and blockage on the filtration process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of a bamboo polyphenol extraction device according to an embodiment of the present application; Figure 2 This is a cross-sectional view of a bamboo polyphenol extraction device in an embodiment of the present application during a stirring extraction process; Figure 3 is a cross-sectional view of a bamboo polyphenol extraction device during the filtration process according to an embodiment of the present application; Figure 4 This is a schematic diagram of the structure of the bottom of the stirring paddle in the embodiment of the present application; Figure 5 It is a schematic diagram of the structure of the filter assembly in the embodiment of the present application.

[0028] Explanation of the reference numerals in the accompanying drawings: 1. stirring barrel; 11. stirring space; 12. corrugated part; 122. groove; 2. liquid storage tank; 21. liquid storage space; 3. stirring assembly; 31. stirring paddle; 311. paddle; 312. block; 32. first driving member; 33. scraper claw; 331. guide surface; 34. expansion and contraction member; 4. heating assembly; 41. heating member; 42. heat conducting member; 5. filtering assembly; 51. filtering layer; 511. filter hole; 52. transmission roller; 521. clearing protrusion; 53. third driving member; 54. cleaning member; 6. liquid passage pipe; 61. rotating disk; 62. collecting trough; 7. second driving member; 8. cover body. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-5 This application is described in further detail.

[0030] The embodiment of the present application discloses a bamboo polyphenol extraction device, which is used to extract polyphenol substances from bamboo. After the bamboo is processed into powder, it is mixed with a special solvent (such as 50-70% ethanol), and then the contact reaction between the bamboo powder and the solvent is promoted by stirring. After the extract is obtained, the impurities are filtered to obtain the desired filtrate. In this embodiment, since the method of stirring to extract bamboo polyphenols is a prior art in the field, it will not be described in detail here.

[0031] Reference Figure 1 and Figure 2 The bamboo polyphenol extraction device comprises a stirring barrel 1, a liquid storage tank 2, a stirring component 3, a heating component 4 and a plurality of filtering components 5. The stirring barrel 1 is used for the bamboo powder to contact and react with the solvent to obtain an extract; the liquid storage tank 2 is used to store the filtrate obtained after filtering the extract; the stirring component 3 is used to stir the mixture in the stirring barrel 1; the heating component 4 is used to provide a certain temperature condition for the bamboo powder to contact and react with the solvent; and the filtering component 5 is used to filter the extract.

[0032] The mixing barrel 1 is in a cylindrical structure as a whole, and has a mixing space 11 in the interior thereof which is in a cylindrical shape as a whole, and the axis of the mixing space 11 coincides with the axis of the mixing barrel 1 .

[0033] The liquid storage tank 2 is installed below the mixing barrel 1, and has a liquid storage space 21 for storing filtrate. In this embodiment, the liquid storage tank 2 is preferably a cylindrical structure as a whole, and the liquid storage space 21 is preferably a cylindrical structure as a whole, and the axis of the liquid storage tank 2 coincides with the axis of the liquid storage space 21.

[0034] The liquid storage tank 2 is provided with a liquid through pipe 6 for connecting the stirring space 11 and the liquid storage space 21. The liquid through pipe 6 is located between the stirring barrel 1 and the liquid storage tank 2, and the liquid through pipe 6 is movably connected to the liquid storage tank 2 along the axial direction of the liquid storage tank 2. In this embodiment, the liquid through pipe 6 is preferably a square tubular structure as a whole, and the center line of the liquid through pipe 6 is preferably coincident with the axis of the liquid storage tank 2.

[0035] Reference Figure 2 and Figure 3 An elastic bellows 12 is fixedly installed at the bottom of the mixing barrel 1. The bellows 12 has an overall ring structure. The top of the liquid pipe 6 has a circular boss structure. The outer ring of the bellows 12 is fixedly connected to the bottom of the mixing barrel 1 and the inner ring is fixedly connected to the circular boss structure on the top of the liquid pipe 6.

[0036] The liquid-through pipe 6 is limited in its movement relative to the liquid storage tank 2. When the liquid-through pipe 6 moves upward to the limit position, the bellows 12 is folded and in a horizontal position as a whole. After the bellows 12 is folded, a plurality of grooves 122 are formed. The grooves 122 are annular with the axis of the mixing barrel 1 as the axis. The plurality of grooves 122 are evenly spaced along the radial direction of the bellows 12 at this time, and the radial dimensions of the plurality of grooves 122 gradually decrease toward the direction approaching the liquid-through pipe 6; when the liquid-through pipe 6 moves downward to the limit position, the bellows 12 is unfolded and shrinks toward the direction approaching the liquid storage tank 2, and the plurality of grooves 122 previously formed by folding disappear, so that the mixture in the stirring space 11 can enter the liquid-through pipe 6 along the surface of the bellows 12.

[0037] A second driving member 7 for driving the liquid pipe 6 to move is installed on the top of the liquid storage tank 2. In this embodiment, the second driving member 7 is preferably a servo cylinder. Since the servo cylinder is a common prior art, it will not be described here in detail, and it is only briefly shown in the accompanying drawings.

[0038] Reference Figure 1 and Figure 2 The stirring assembly 3 is arranged on the stirring barrel 1 , and includes a stirring paddle 31 for stirring and a first driving member 32 for providing power to the stirring paddle 31 .

[0039] The stirring paddle 31 is installed in the stirring space 11 and is rotatably connected to the stirring barrel 1, and its rotation axis coincides with the axis of the stirring barrel 1; the first driving member 32 is fixedly installed on the top of the stirring barrel 1, and is used to drive the stirring paddle 31 to rotate in a certain direction relative to the stirring barrel 1. In this embodiment, the first driving member 32 is preferably a servo motor, and the position where the first driving member 32 is installed on the stirring barrel 1 is preferably offset relative to the axis of the stirring barrel 1, and the drive is achieved through a gear set, providing space for the installation of the heating component 4; since the servo motor and the above-mentioned design are both common existing technologies, they are not described here in detail, and they are only briefly shown in the drawings.

[0040] When the first driving member 32 drives the stirring paddle 31 to rotate, the blades of the stirring paddle 31 keep in contact with the inner wall of the stirring space 11, and can make the mixture in the stirring space 11 surge upward, so as to promote the contact reaction between the bamboo powder and the solvent. In this embodiment, since the stirring paddle 31 with the above-mentioned effect is a common prior art, it will not be described in detail here, and it is only briefly shown in the drawings.

[0041] Reference Figure 2 and Figure 3 , the bottom of the stirring paddle 31 has a block 312 for controlling the opening and closing of the top opening of the liquid passage 6, and the top of the liquid passage 6 is equipped with a rotating disk 61 for contacting the block 312. In this embodiment, it is preferred that both the top and the bottom of the block 312 have a conical structure, and the axis of the conical structure coincides with the rotation axis of the stirring paddle 31; at this time, the conical structure at the top of the block 312 can effectively reduce the probability of impurities staying at the top of the block 312, and the conical structure at the bottom of the block 312 can facilitate the block 312 to partially enter the liquid passage 6 to block the top opening of the liquid passage 6.

[0042] The rotating disk 61 is rotatably connected to the liquid pipe 6, and its rotation axis coincides with its own axis and the center line of the liquid pipe 6; when the liquid pipe 6 moves upward to the limit position, the block 312 will block the opening at the top of the liquid pipe 6 and contact and abut against the rotating disk 61, and the stirring space 11 can be used to stir the bamboo powder and the solvent mixture; at this time, the first driving member 32 is controlled to drive the stirring paddle 31 to rotate, which can drive the rotating disk 61 to rotate relative to the liquid pipe 6, so that the solid matter accumulated between the conical structure at the bottom of the block 312 and the rotating disk 61 can move in the direction away from the top opening of the liquid pipe 6 under the action of centrifugal force. In this embodiment, the block 312 is preferably elastic and made of rubber material, so that the block 312 can achieve the blocking effect, and at the same time can reduce the wear caused to both parties when the block 312 contacts the rotating disk 61.

[0043] Reference Figure 1 and Figure 2The heating assembly 4 includes a heating element 41 for generating heat and a heat conducting element 42 for transferring heat.

[0044] The heating element 41 is fixedly mounted on the top of the mixing barrel 1, and its mounting position is aligned with the axis of the mixing barrel 1; the heat conducting element 42 is embedded in the stirring paddle 31, and one end of the heat conducting element 42 passes through the top of the stirring paddle 31 to form a connection with the heating element 41; the heat generated by the heating element 41 after operation can be transferred to the stirring paddle 31 through heat conduction and evenly distributed on the stirring paddle 31, and then transferred to the mixture in contact with the stirring paddle 31 in the stirring space 11 through the stirring paddle 31. In this embodiment, since the heating component 4 and the stirring paddle 31 with the above-mentioned effects are both common prior arts, they are not described here in detail, and the heating component 4 is only briefly shown in the drawings.

[0045] Reference Figure 2 and Figure 4 Furthermore, when the stirring paddle 31 stirs the mixture in the stirring space 11, the solid matter is easily precipitated and accumulated in the multiple grooves 122 formed on the corrugated member 12 under the action of its own gravity, thereby affecting the effect of the contact reaction between the bamboo powder and the solvent. For this reason, it is preferred that the stirring paddle 31 is equipped with multiple scraping claws 33 at the bottom of each paddle 311 for stirring the solid matter accumulated in the groove 122, and the multiple scraping claws 33 at the bottom of each paddle 311 correspond to the multiple grooves 122 formed on the corrugated member 12 one by one.

[0046] One end of the scraper claw 33 is rotatably connected to the paddle 311 of the stirring paddle 31, and its rotation axis is parallel to the extension direction of the corresponding paddle 311; during the rotation of the scraper claw 33 relative to the paddle 311 of the stirring paddle 31, the other end of the scraper claw 33 can be inserted into the corresponding groove 122, and move along the corresponding groove 122 during the rotation of the stirring paddle 31, thereby stirring the solid matter accumulated in the corresponding groove 122.

[0047] One side of the scraper claw 33 has a guide surface 331 for actively contacting the solid matter in the corresponding groove 122 and guiding it to leave the groove 122. When the scraper claw 33 moves along the corresponding groove 122 as the stirring paddle 31 rotates, the guide surface 331 can guide the solid matter in contact with it to move upward and leave the corresponding groove 122. In this embodiment, the guide surface 331 of the scraper claw 33 is preferably a curved surface.

[0048] Furthermore, in order to enhance the stirring effect of the scraper claw 33 on the solid matter accumulated in the groove 122, and at the same time reduce the probability of impurities remaining on the surface of the corrugated member 12 after the stirring and extraction is completed, the scraper claw 33 preferably has a tendency to rotate in a direction close to the corresponding groove 122 under the heat transfer of the heat conductive component so that the end of the scraper claw 33 tends to penetrate into the groove 122.

[0049] A plurality of expansion and contraction members 34 that can expand or contract with temperature changes are fixedly installed inside the bottom of the paddle 311. One end of the expansion and contraction member 34 is fixedly connected to the heat-conducting member 42 inside the paddle 311, and the other end is in contact with and abuts against the corresponding scraper claw 33. In this embodiment, since the expansion and contraction member 34 with the above-mentioned function is a common prior art, it will not be described in detail here, and it is only briefly shown in the drawings.

[0050] When the heating component 4 is not in operation, the scraper claw 33 is in a state of being rotated to the extreme position away from the corresponding groove 122, and at this time the end of the scraper claw 33 is also located in the corresponding groove 122; when the heating component 4 is in operation, the scraper claw 33 will rotate in the direction close to the corresponding groove 122 until the end of the scraper claw 33 contacts and abuts against the bottom groove wall of the corresponding groove 122.

[0051] Reference Figure 1 and Figure 2 , the filter assembly 5 is installed on the liquid pipe 6, and multiple filter assemblies 5 are evenly spaced on the liquid pipe 6 along the length direction of the liquid pipe 6, and the filtering effect of the multiple filter assemblies 5 gradually increases towards the direction close to the liquid storage tank 2. In this embodiment, preferably, two filter assemblies 5 are installed on the liquid pipe 6; in other embodiments, more filter assemblies 5 can be installed on the liquid pipe 6.

[0052] Reference Figure 1 and Figure 5 The filter assembly 5 includes a filter layer 51 for filtering, a plurality of drive rollers 52 for driving the filter layer 51 to move, and a third drive member 53 for providing power to the plurality of drive rollers 52 .

[0053] The filter layer 51 as a whole is in a band-like structure connected end to end and has a certain degree of elasticity and flexibility; a plurality of filter holes 511 for filtering impurities are evenly arranged on the filter layer 51, and different filter components 5 have different filtering effects due to the different sizes of the filter holes 511, that is, the size of the filter holes 511 on the filter layer 51 in the plurality of filter components 5 gradually decreases towards the direction approaching the liquid storage tank 2.

[0054] The transmission roller 52 is a cylindrical structure as a whole, and is installed inside the liquid pipe 6 and is rotatably connected to the liquid pipe 6. The rotation axis of the transmission roller 52 coincides with its own axis, and the rotation axes of the plurality of transmission rollers 52 are parallel to each other. In this embodiment, the filter assembly 5 preferably includes two transmission rollers 52, and the axis of the transmission roller 52 is parallel to the adjacent side length of the liquid pipe 6.

[0055] The filter layer 51 is wound around the two corresponding transmission rollers 52 at the same time. At this time, the filter layer 51 will intercept the impurities inside the liquid pipe 6 twice. The extract needs to pass through the filter layer 51 when passing through the liquid pipe 6.

[0056] The third driving member 53 is fixedly mounted on the outside of the liquid passage 6 and is located on one side of the axis direction of the corresponding transmission roller 52, and is used to drive the corresponding transmission roller 52 to rotate relative to the liquid passage 6. In this embodiment, the third driving member 53 is preferably a servo motor, and the corresponding two transmission rollers 52 are preferably synchronized and rotate in the same direction through a synchronization structure; since the synchronization structure with the above function is a common prior art, it will not be described here in detail, and it is omitted in the drawings.

[0057] After the stirring and extraction is completed, the liquid passing tube 6 moves downward until the block 312 is separated from the rotating disk 61, and the extracted liquid in the stirring space 11 can enter the liquid storage space 21 through the liquid passing tube 6; in the process of the extracted liquid passing through the liquid passing tube 6, the third driving member 53 will drive the transmission roller 52 to rotate, so that the position of the extracted liquid passing through the filter layer 51 is constantly changed, thereby effectively reducing the probability of partial filter holes 511 being blocked and affecting the overall filtering effect of the filter layer 51.

[0058] Furthermore, in order to improve the relative position stability of the filter layer 51 after it is wound and installed on the drive roller 52, and at the same time effectively reduce the probability of impurities clogging the filter holes 511, it is preferred that a plurality of clearing protrusions 521 capable of entering and exiting the filter holes 511 are evenly distributed on the surface of the drive roller 52.

[0059] As the transmission roller 52 rotates to drive the filter layer 51 to move, the clearing protrusion 521 on the transmission roller 52 can be inserted into the filter hole 511 on the filter layer 51 close to the transmission roller 52, thereby ejecting impurities clogged in the filter hole 511; thereafter, as the filter layer 51 moves, the clearing protrusion 521 on the transmission roller 52 will leave the previously inserted filter hole 511 and then be inserted into the next filter hole 511.

[0060] Furthermore, in order to reduce the influence of impurities filtered by the filter layer 51 on the extraction liquid passing through the liquid tube 6, and at the same time facilitate the staff to subsequently clean the impurities filtered in the liquid tube 6, the filter assembly 5 preferably also includes a cleaning part 54 for cleaning the filter layer 51, and the liquid tube 6 is preferably provided with a plurality of collection troughs 62 for collecting impurities on the inner side, and the liquid tube 6 is preferably provided with a plurality of cover bodies 8 for controlling the opening and closing of the collection troughs 62.

[0061] The plurality of collecting troughs 62 and the plurality of covers 8 correspond one-to-one to the plurality of filter components 5 .

[0062] The aggregate trough 62 is located on one side of the filter layer 51 , and the side close to the corresponding filter layer 51 is communicated with the upper space and the lower space of the corresponding filter layer 51 , and impurities filtered by the filter layer 51 can enter the aggregate trough 62 with the movement of the filter layer 51 .

[0063] The cleaning piece 54 has a certain degree of flexibility and elasticity, one end of which is fixedly connected to the inner wall of the liquid passage pipe 6, and the other end is in contact with the outer surface of the corresponding filter layer 51; the cleaning piece 54 is installed at a position where the corresponding aggregate trough 62 is connected to the corresponding filter layer 51 The space below forms a seal at the position where the corresponding aggregate trough 62 is connected to the corresponding filter layer 51 To prevent impurities that enter the aggregate trough 62 from leaving.

[0064] An opening is formed on the liquid pipe 6 on the side of the aggregate trough 62 away from the corresponding filter layer 51, and the cover body 8 is adapted to the opening, and the cover body 8 and the liquid pipe 6 are detachably connected; after the cover body 8 is connected to the liquid pipe 6, the cover body 8 will cover the opening and form a seal; after the cover body 8 is removed from the liquid pipe 6, impurities in the aggregate trough 62 can leave through the opening.

[0065] The implementation principle of a bamboo polyphenol extraction device in the embodiment of the present application is: After bamboo powder and solvent are added into the stirring space 11 according to the required ratio, the stirring component 3 and the heating component 4 are started to allow the mixture to be stirred at a certain temperature to promote full contact reaction between the bamboo powder and the solvent; After the stirring and extraction is completed, the second driving member 7 is controlled to drive the liquid pipe 6 to move downward to the limit position, and the plurality of filter components 5 are started at the same time. At this time, the extraction liquid in the stirring space 11 can flow toward the direction close to the liquid storage tank 2 through the liquid pipe 6. The plurality of filter components 5 filter the extraction liquid in the liquid pipe 6 to intercept impurities in the extraction liquid, so that the required filtrate can enter the liquid storage tank 2 for collection; After the filtration is completed, the staff can remove the cover 8 to remove the impurities filtered out by the filter assembly 5 to ensure that the filter assembly 5 maintains a stable and reliable filtering effect during the next extraction of bamboo polyphenols.

[0066] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A bamboo polyphenol extraction device, characterized in that: It comprises a stirring barrel (1), a liquid storage tank (2), a stirring component (3), a heating component (4) and a filtering component (5); The stirring barrel (1) has a stirring space (11) inside, the liquid storage tank (2) is located below the stirring barrel (1) and has a liquid storage space (21) inside, a liquid passage (6) for connecting the stirring space (11) and the liquid storage space (21) is provided between the stirring barrel (1) and the liquid storage tank (2), and a blocking block (312) for controlling the opening and closing of an end of the liquid passage (6) close to the stirring space (11) is provided in the stirring space (11); The stirring assembly (3) comprises a first driving member (32) and a stirring paddle (31); the stirring paddle (31) is located in the stirring space (11) and is rotatably connected to the stirring barrel (1), the rotation axis of the stirring paddle (31) coincides with the axis of the stirring barrel (1), and during its rotation, it maintains contact with the inner wall of the stirring space (11) and drives the material in the stirring space (11) to surge upward; the first driving member (32) is arranged on the stirring barrel (1) and is used to drive the stirring paddle (31) to rotate; The heating component (4) comprises a heating element (41) and a heat-conducting element (42); the heating element (41) is arranged on the stirring barrel (1), the heat-conducting element (42) is arranged on the stirring paddle (31), and the heating element (41) is connected to the heat-conducting element (42); The filtering component (5) is arranged inside the liquid passage pipe (6) and is used to filter impurities in the extract to obtain a filtrate.

2. A bamboo polyphenol extraction device according to claim 1, characterized in that: It also includes a second driving member (7), and the bottom of the mixing barrel (1) is provided with an elastic corrugated member (12); The liquid passage pipe (6) is movably connected to the liquid storage tank (2); the second driving member (7) is arranged on the liquid storage tank (2) and is used to drive the liquid passage pipe (6) to move; The blocking block (312) is arranged at the bottom of the stirring paddle (31); the outer side of the corrugated member (12) is connected to the bottom of the stirring barrel (1), and the inner side of the corrugated member (12) is connected to the top of the liquid passage pipe (6); When the liquid passage pipe (6) moves upward to an extreme position, the blocking block (312) blocks the liquid passage pipe (6); when the liquid passage pipe (6) moves downward to an extreme position, the liquid passage pipe (6) communicates with the stirring space (11), and the corrugated member (12) is in a contracted shape in a direction approaching the liquid storage tank (2).

3. A bamboo polyphenol extraction device according to claim 2, characterized in that: The bottom of the stirring paddle (31) is provided with a plurality of scraping claws (33); When the liquid passage tube (6) moves upward to an extreme position, the corrugated member (12) folds to form a plurality of grooves (122) that match the scraper claws (33); when the liquid passage tube (6) moves downward to an extreme position, the corrugated member (12) unfolds and the grooves (122) disappear.

4. A bamboo polyphenol extraction device according to claim 3, characterized in that: One side of the scraping claw (33) has a guide surface (331) for guiding the material to move upwards, and during the rotation of the stirring paddle (31), the guide surface (331) contacts the material in the groove (122).

5. The bamboo polyphenol extraction device according to claim 3, characterized in that: The scraping claw (33) is movably connected to the stirring paddle (31), and the scraping claw (33) moves downward after being heated.

6. The bamboo polyphenol extraction device according to claim 1, characterized in that: The filter assembly (5) comprises a filter layer (51), a plurality of drive rollers (52) and a third drive member (53); The transmission roller (52) is rotatably connected to the liquid passage tube (6) and is located inside the liquid passage tube (6), and the rotation axis coincides with its own axis and is horizontal; a third driving member (53) is arranged outside the liquid passage tube (6) and is used to drive the plurality of transmission rollers (52) to rotate synchronously and in the same direction; the filter layer (51) is in the form of a flexible belt structure connected end to end, is wound around the plurality of transmission rollers (52) at the same time, has a plurality of filter holes (511) evenly distributed, and can form an interception inside the liquid passage tube (6).

7. A bamboo polyphenol extraction device according to claim 6, characterized in that: The filter assembly (5) further comprises a cleaning member (54); the liquid passage pipe (6) is provided with a material collecting groove (62) on one side of the filter layer (51) and is movably provided with a cover body (8) for controlling the opening and closing of the material collecting groove (62); The space above the filter layer (51) is in communication with the aggregate trough (62), and the filter layer (51) moves to send impurities into the aggregate trough (62); One end of the cleaning member (54) is connected to the liquid passage pipe (6) and the other end is in contact with and abuts against the filter layer (51), and the cleaning member (54) blocks a position where the collecting trough (62) communicates with the space below the filter layer (51).

8. The bamboo polyphenol extraction device according to claim 6, characterized in that: A plurality of clearing protrusions (521) are evenly distributed on the surface of the driving roller (52), and the clearing protrusions (521) are used to be inserted into the filter holes (511) on the filter layer (51).

9. The bamboo polyphenol extraction device according to claim 6, characterized in that: A plurality of the filter components (5) are provided, and the plurality of the filter components (5) are vertically distributed on the liquid passage pipe (6); In the plurality of filter assemblies (5), the sizes of the filter holes (511) on the plurality of filter layers (51) gradually decrease in a direction approaching the liquid storage tank (2).

10. The bamboo polyphenol extraction device according to claim 1, characterized in that: A rotating disk (61) for contacting the blocking block (312) is rotatably provided at the top of the liquid passage tube (6), and the rotating axis of the rotating disk (61) coincides with its own axis and with the axis of the stirring paddle (31).

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