Extract purification device and method

Abstract

The invention relates to the technical field of extract purification, and particularly discloses an extract purification device and method.The extract purification device comprises a tank body, a filter screen, a collecting frame, a sliding assembly and a control assembly are arranged in the tank body, and the upper end of the collecting frame communicates with the interior of the tank body; the mounting frame is assembled in the tank body in an up-down sliding mode, the first partition plate and the bottom plate are connected with the mounting frame, the first elastic piece is connected with the bottom plate and the tank body, the first partition plate and the bottom plate are sequentially arranged below the filter screen, a first through hole is formed in the first partition plate, and a second through hole and a third through hole are formed in the bottom plate; the control assembly is matched with the first partition plate and the bottom plate so as to control closing of the first through hole and the second through hole. When the filter screen is blocked and the extracting solution on the partition plate I is reduced, the elastic piece I drives the mounting frame to move upwards, and the partition plate drives the extracting solution to backflush the filter screen to clean the filter screen; the extract purification device and the extract purification method have the effect of improving the filtering efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of extract purification, and particularly relates to an extract purification device and method. Background Art

[0002] An extract is a concentrated product of active ingredients separated from natural raw materials such as plants, animals, and minerals by physical or chemical methods, such as active substances like anthocyanins, polysaccharides, and polyphenols. The extract production process includes raw material pretreatment, primary extraction, primary concentration, purification, etc. Among them, the purification process can separate macromolecular impurities and retain target small molecule substances.

[0003] A patent document with the publication number CN217119565U discloses a purification device for biological extracts, including a box body, a clamping seat, and an installation cylinder clamped and connected to the clamping seat. A servo motor is fixedly arranged in the middle of the bottom end of the box body, and the transmission shaft of the servo motor is fixedly connected to the bottom end of the clamping seat. Support columns are evenly arranged in the lower part of the inner cavity of the installation cylinder, and a bearing tray is movably arranged above the support columns. A guide sleeve and a filter mesh sleeve are sequentially arranged on the upper surface of the bearing tray from the inside to the outside. Leakage holes are evenly opened on the outer side of the lower end of the guide sleeve. A pressing plate is movably arranged in the guide sleeve, and a push column opposite to the extraction mechanism is rotatably arranged at the upper end of the pressing plate. The biological extract filtered and purified by the leakage holes of the guide sleeve and the filter mesh sleeve is pressed out, and at the same time, the servo motor drives the clamping seat at a high speed to drive the installation cylinder to rotate synchronously, so that the biological extract remaining in the biological residue is filtered and purified through the filter mesh sleeve under the action of centrifugal force.

[0004] However, the following problems still exist in this solution. In the prior art, when preparing plant extracts, the raw materials are first broken and then mixed with a solvent, and then large particle impurities or raw material residues are removed by filtration. During filtration, as time goes by, impurities accumulate inside the filter mesh, resulting in a deterioration of the filtration effect. The filter mesh needs to be cleaned regularly. If it is cleaned during the working process, it will affect the normal working efficiency. Summary of the Invention

[0005] The present invention provides an extract purification device and method, aiming to solve the problem that in the related art, long-term filtration may cause the filter mesh to be affected by impurity accumulation and affect filtration.

[0006] In a first aspect, the present invention provides an extract purification device, including a tank body, in which a filter mesh, a collection frame, a sliding component, and a control component are arranged. The upper end of the collection frame is communicated with the inside of the tank body and corresponds to the upper side of the filter mesh; The sliding assembly includes: a mounting rack that slides up and down inside the tank, a first partition plate and a bottom plate connected to the mounting rack, and a first elastic member connecting the bottom plate and the tank. The first partition plate and the bottom plate are sequentially arranged below the filter net. A first through hole is formed in the first partition plate, and a second through hole and a third through hole are formed in the bottom plate. The control assembly cooperates with the first partition plate and the bottom plate to respectively control the opening and closing of the first through hole and the second through hole; The extract filtered by the filter net enters onto the first partition plate. As the extract increases, the control assembly opens the first through hole and closes the second through hole. The extract sequentially passes through the first through hole and the third through hole and is discharged outside the tank. At the same time, the extract drives the first partition plate and the bottom plate to move downward and compress the first elastic member. When the filter net is blocked and the extract on the first partition plate decreases, the control assembly closes the first through hole and opens the second through hole. The extract on the bottom plate flows out through the second through hole and the third through hole, and the first elastic member drives the mounting rack to move upward. The impurities on the filter net are backflushed into the collection box by the extract remaining on the first partition plate.

[0007] The effect is that after the extract enters onto the first partition plate, as the extract on the first partition plate increases, the control assembly controls the opening of the first through hole. At this time, the third through hole is in an open state. The filtered extract passes through the first through hole and the third through hole and flows out. During the process, there is a certain amount of extract on both the first partition plate and the bottom plate, and the first elastic member is in a compressed state. When the filter net is blocked, the amount of extract on the first partition plate decreases. The control assembly drives the first blocking plate to move upward, closes the first through hole. At the same time, the control assembly controls the opening of the second through hole, so that the second through hole and the third through hole discharge the extract simultaneously, enabling the extract to be quickly discharged in a short time. The first elastic member drives the mounting rack to move upward, and the mounting rack drives the extract remaining on the first partition plate to move upward and contact the bottom of the filter net, backflushing the filter net, separating the impurities from the filter net, and then collecting the backflushed impurities into the collection box to complete the cleaning of the filter net. Subsequently, the filter net resumes its filtering effect, the extract on the first partition plate increases again, and the above operations are repeated. During the filtering process, the filter net is continuously cleaned without stopping, improving the filtering efficiency of the extract.

[0008] Preferably, the control assembly includes a control frame, a first blocking plate, a second blocking plate, and a second elastic member. A sliding rod is arranged on the first partition plate. The control frame is slidably matched with the sliding rod up and down. The second elastic member is respectively connected to the control frame and the sliding rod to drive the control frame to move upward. The first blocking plate and the second blocking plate are both installed on the control frame. The first blocking plate corresponds to the first through hole, and the second blocking plate corresponds to the second through hole. When the first blocking plate is separated from the first through hole, the second blocking plate cooperates with the second through hole to block the second through hole.

[0009] The effect is that the increase in the extract on the first partition plate drives the first blocking plate to move downward, opening the first through hole. The first blocking plate drives the second blocking plate to move downward through the control frame, driving the second blocking plate to move to the position of the second through hole and closing the second through hole.

[0010] Preferably, a second partition plate is arranged inside the tank body. The second partition plate is arranged above the filter screen and the mounting rack. A fourth through hole is formed in the second partition plate. A third blocking plate is arranged on the mounting rack. The third blocking plate cooperates with the fourth through hole to block the fourth through hole.

[0011] The effect is that after the extraction liquid on the second partition plate reaches a certain amount, it drives the third blocking plate to move downward, and then opens the fourth through hole, and the extraction liquid continues to flow downward.

[0012] Preferably, a communication port is formed in the side wall of the tank body. The inside of the tank body is communicated with the collection frame through the communication port. A blocking ring is slidably assembled up and down inside the side wall of the tank body. When the blocking ring moves into the communication port, it is used to block the communication port.

[0013] The effect is that after the filter screen is backflushed, the blocking ring is moved upward to open the communication port so that the collection frame can collect impurities.

[0014] Preferably, the second partition plate is slidably assembled up and down inside the tank body. A receiving frame is fixedly arranged inside the tank body. The receiving frame is arranged above the second partition plate. A third elastic member is arranged between the second partition plate and the receiving frame. The third elastic member is used to drive the second partition plate to move upward. A clamping plate is arranged on the second partition plate. The clamping plate is connected to the blocking ring.

[0015] The effect is that the increase in the extraction liquid on the second partition plate drives the second partition plate to move downward, and at the same time drives the blocking ring to move to the communication port to block the communication port.

[0016] Preferably, a switch rod is slidably assembled up and down inside the receiving frame. A fourth blocking plate is arranged at the top of the switch rod. The fourth blocking plate corresponds to the feed inlet of the tank body. A fourth elastic member is arranged between the fourth blocking plate and the receiving frame. The fourth elastic member is used to drive the fourth blocking plate to move into the feed inlet to close the feed inlet.

[0017] The effect is that the extraction liquid enters the feed inlet and drives the fourth blocking plate to move downward to open the feed inlet.

[0018] Preferably, the bottom of the switch rod sequentially passes through the third blocking plate, the filter screen, and the first blocking plate and extends to the third through hole. A fifth blocking plate is arranged at the bottom of the switch rod. The fifth blocking plate cooperates with the third through hole to block the third through hole.

[0019] The effect is that the switch rod moves downward, driving the fifth blocking plate to move into the third through hole to block the third through hole.

[0020] Preferably, guide inclined surfaces are circumferentially formed on the upper sides of the first partition plate and the second partition plate. The inner sides of the guide inclined surfaces are inclined downward.

[0021] The effect is that the extraction liquid can flow to the centers of the first partition plate and the second partition plate through the guide inclined surfaces, so as to drive the first blocking plate and the third blocking plate to move.

[0022] Preferably, a plurality of through holes two are arranged around the through hole three, and a plurality of blocking plates two are correspondingly arranged for the plurality of through holes two. The control frame includes a plurality of connecting rods, and a plurality of blocking plates two are correspondingly arranged for the plurality of connecting rods one by one. The connecting rod is connected to the blocking plate two.

[0023] The effect is that by arranging a plurality of through holes two, when the through holes two are opened, the flow rate of the extraction liquid flowing out on the bottom plate is increased, so that the elastic member one can be quickly released and drive the mounting frame to move upward.

[0024] In a second aspect, the present invention provides an extraction and purification method for extracts, which uses the above-mentioned extraction and purification device for extracts, and includes the following steps: After the extraction liquid is filtered, it enters onto the partition plate two, driving the partition plate two to move downward until the sealing ring moves to the communication port to block the communication port; The extraction liquid on the partition plate two gradually increases, driving the blocking plate three to separate from the through hole four, opening the through hole four, and the extraction liquid enters the filter net; After being filtered, the extraction liquid enters above the partition plate one. As the liquid level on the partition plate one gradually increases, it drives the blocking plate one to separate from the through hole one, opening the through hole one; When the blocking plate one moves downward, it drives the blocking plate two to also move downward to block the through hole two; The extraction liquid passes through the through hole one and enters the bottom plate. After the extraction liquid on the bottom plate gradually increases, the bottom plate moves downward, causing the bottom plate to separate from the blocking plate five, opening the through hole three, and at this time the extraction liquid flows out through the through hole three; When the mounting frame moves downward, it compresses the elastic member one; When the filter net is blocked, the extraction liquid on the partition plate one gradually decreases, the pressure on the blocking plate one gradually decreases, and the elastic member two drives the blocking plate one to move upward to the initial position to close the through hole one; At the same time, the control frame drives the blocking plate two to separate from the through hole two, and the extraction liquid on the bottom plate is discharged through the through hole two and the through hole three simultaneously; Subsequently, the elastic member one drives the mounting frame to move upward, and the mounting frame drives the partition plate one to move upward, bringing the extraction liquid on the partition plate one into contact with the lower part of the filter net to backwash the filter net; At the same time, after the mounting frame drives the blocking plate three to cooperate with the through hole four, it drives the partition plate two to move upward, so that the sealing ring moves upward to open the communication port, and the impurities after backwashing are collected into the collection box.

[0025] The effect is that during the filtration process of the extraction liquid, when the filter net is blocked, the elastic member one drives the mounting frame to move upward, driving the extraction liquid remaining on the partition plate one to backwash the filter net, realizing the cleaning of the filter net.

[0026] Beneficial effects: When the filter screen is clogged, through hole one is closed and through hole two is opened at the same time, the extraction liquid on the bottom plate flows out quickly, the elastic member one drives the mounting frame and the partition one to move upward, and the partition one drives the extraction liquid above it to move upward and contact the filter screen, thereby realizing the backwashing of the filter screen, so as to flush out the impurities on the filter screen and bring the impurities into the collection frame, thereby realizing the cleaning of the filter screen without stopping the machine and improving the filtering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0028] Figure 2 It is a schematic diagram of the structure at point A in the figure.

[0029] Figure 3 Schematic diagram of the positional relationship between the filter screen and the partition plate 1 in the embodiment of the present invention.

[0030] Figure 4 Schematic diagram of the structure of the sliding assembly in an embodiment of the present invention.

[0031] Figure 5 Schematic diagram of the structure of the control component in the embodiment of the present invention.

[0032] Figure 6 Schematic diagram of the structure of the partition board 2 in the embodiment of the present invention.

[0033] Figure 7 Schematic diagram of the structure of the control frame in the embodiment of the present invention.

[0034] Figure 8 Schematic diagram of the structure of the switch rod in the embodiment of the present invention.

[0035] Reference numerals: 1. Tank body; 11. Connecting port; 12. Receiving frame; 13. Feed port; 14. Discharge port; 2. Filter screen; 3. Collecting frame; 31. Collecting pipe; 4. Sliding assembly; 41. Mounting frame; 411. Mounting rod; 412. Blocking plate three; 42. Partition plate one; 421. Through hole one; 422. Sliding rod; 423. Guide slope; 43. Bottom plate; 431. Through hole two; 432. Through hole three; 44. Elastic part one; 5. Control assembly; 51. Control frame; 52. Blocking plate one; 53. Blocking plate two; 54. Elastic part two; 6. Partition plate two; 61. Through hole four; 62. Elastic part three; 63. Card; 7. Blocking ring; 8. Switch rod; 81. Blocking plate four; 82. Elastic part four; 83. Blocking plate five; 9. Connecting rod. DETAILED DESCRIPTION

[0036] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0037] An extract purification device disclosed by the present invention.

[0038] Referring to Figures 1 to 8 , the extract purification device includes a filter screen 2, a collection box 3, a sliding assembly 4, and a control assembly 5 disposed in a tank body 1. The tank body 1 includes a feed inlet 13 and a discharge outlet 14. The feed inlet 13 and the discharge outlet 14 are respectively disposed at the upper and lower ends of the tank body 1. The filter screen 2 is disposed in the tank body 1. The collection box 3 is disposed on the side of the tank body 1. The upper end of the collection box 3 is in communication with the interior of the tank body 1, and the communication portion between the collection box 3 and the tank body 1 is located above the filter screen 2, that is, the upper end of the collection box 3 corresponds to the upper side of the filter screen 2. The sliding assembly 4 is installed in the tank body 1, and the control assembly 5 cooperates with the sliding assembly 4.

[0039] The extraction liquid to be filtered is added into the tank body 1 through the feed inlet 13, and after being filtered by the filter screen 2 in the tank body 1, it is discharged through the discharge port. The impurities in the extraction liquid are filtered out by the filter screen 2. Additionally, when the filter screen 2 is blocked, the control assembly 5 cooperates with the sliding assembly 4 to perform backflushing on the filter screen 2, and the impurities on the surface of the filter screen 2 are backflushed into the collection box 3, and the impurities are collected by the collection box 3 to ensure the filtering performance of the filter screen 2 during the filtering process and improve the filtering efficiency.

[0040] The tank body 1 is placed vertically, and the filter screen 2 is placed perpendicular to the center line of the tank body 1, that is, the filter screen 2 is placed horizontally. The outer side of the filter screen 2 is connected to the inner wall of the tank body 1 so that the extraction liquid passes through the filter screen 2 when flowing downward and is filtered by the filter screen 2.

[0041] Referring to Figure 3 , Figure 4 , Figure 5 , the sliding assembly 4 includes: a mounting frame 41, a first partition 42, a bottom plate 43, and a first elastic member 44. The mounting frame 41 is slidably assembled up and down in the tank body 1. Both the first partition 42 and the bottom plate 43 are connected to the mounting frame 41. Both the first partition 42 and the bottom plate 43 are disposed below the filter screen 2. The first partition 42 is located between the bottom plate 43 and the filter screen 2, that is, the first partition 42 and the bottom plate 43 are sequentially disposed below the filter screen 2. A through hole 421 is formed in the first partition 42. The through hole 421 is located at the center of the first partition 42 and corresponds to the center of the filter screen 2. Through holes 431 and 432 are formed in the bottom plate 43. The first elastic member 44 is a spring. The first elastic member 44 is located below the bottom plate 43, and the first elastic member 44 connects the bottom plate 43 and the tank body 1. The control assembly 5 cooperates with the first partition 42 and the bottom plate 43 to control the closing of the through hole 421 and the through hole 431.

[0042] A first chamber is formed between the first partition plate 42 and the filter screen 2, and a second chamber is formed between the bottom plate 43 and the first partition plate 42. During filtration, the extract filtered by the filter screen 2 enters onto the first partition plate 42, that is, into the first chamber, and then enters onto the bottom plate 43 through the first through hole 421, that is, into the second chamber, and finally is discharged through the third through hole 432 and the discharge port 14.

[0043] Initially, the first through hole 421 is in a closed state. The filtered extract enters the first chamber and is located above the first partition plate 42. As continuous filtration progresses, the liquid level of the extract in the first chamber gradually increases, and the pressure on the first partition plate 42 gradually increases, driving the mounting frame 41 to slide downward. At the same time, the first elastic member 44 is compressed, opening the first through hole 421. Then the extract enters the second chamber and subsequently flows out through the third through hole 432. At this time, the second through hole 431 is in a closed state, and as filtration proceeds, the outflow speed of the extract through the first through hole 421 and the third through hole 432 is the same, so that the liquid levels in the first chamber and the second chamber both remain at a certain height.

[0044] When the filter screen 2 becomes blocked, the filtration speed of the filter screen 2 decreases, and the liquid level in the first chamber gradually drops. After dropping to a certain height, the control assembly 5 controls the first through hole 421 to close. When the first through hole 421 closes, the extract in the first chamber still has a certain height. At the same time, the second through hole 431 opens, enabling the extract in the second chamber to flow out quickly, causing the first elastic member 44 to be quickly released, driving the mounting frame 41 to move upward. The movement of the mounting frame 41 drives the first partition plate 42 to move upward, and the first partition plate 42 drives the extract in the first chamber to move upward, driving the extract in the first chamber to move into contact with the lower part of the filter screen 2, realizing backwashing of the filter screen 2, separating the impurities from the filter screen 2, and the separated impurities enter the collection box 3 with the extract and are collected through the collection box 3.

[0045] Refer to Figure 3 、 Figure 4 、 Figure 5 、 Figure 7, the control component 5 includes: a control frame 51, a first plug plate 52, a second plug plate 53, and a second elastic member 54. A slide bar 422 is provided on the first partition plate 42, and the slide bar 422 is arranged in the vertical direction. The control frame 51 is slidably matched with the slide bar 422 up and down. The second elastic member 54 is set as a spring, and the second elastic member 54 is sleeved outside the slide bar 422 and is connected to both the control frame 51 and the slide bar 422 respectively. The second elastic member 54 is used to drive the control frame 51 to move upward. The first plug plate 52 and the second plug plate 53 are both arranged on the control frame 51. The first plug plate 52 corresponds to the first through hole 421, and the second plug plate 53 corresponds to the second through hole 431. The first plug plate 52 and the first through hole 421 are arranged on the same straight line, and the second plug plate 53 and the second through hole 431 are arranged on the same straight line. The first plug plate 52 moves into the first through hole 421 to block the first through hole 421, and the second plug plate 53 moves into the second through hole 431 to block the second through hole 431.

[0046] In the initial state, the first plug plate 52 cooperates with the first through hole 421, and the second plug plate 53 is separated from the second through hole 431. At this time, the first through hole 421 is closed, and the second through hole 431 is open. As the extraction liquid on the first partition plate 42 increases, the pressure on the first plug plate 52 gradually increases, driving the first plug plate 52 to move downward, and at the same time driving the control frame 51 to move downward. The second elastic member 54 is deformed accordingly, and the second plug plate 53 also moves downward. At this time, the first plug plate 52 is separated from the first through hole 421, the first through hole 421 is opened, the second plug plate 53 cooperates with the second through hole 431, and the second through hole 431 is closed. At this time, the extraction liquid flows out through the first through hole 421 and the third through hole 432. When the filter screen 2 is blocked, the extraction liquid in the first chamber decreases, and the second elastic member 54 drives the control frame 51 to move upward to the initial position. The first plug plate 52 cooperates with the first through hole 421, and the second plug plate 53 is separated from the second through hole 431, so that the first through hole 421 is closed, and at the same time the second through hole 431 is opened. Then the mounting frame 41 moves to complete the backwashing operation of the filter screen 2.

[0047] Refer to Figure 3 , Figure 4 , there are multiple second through holes 431, and the multiple second through holes 431 are arranged at intervals circumferentially around the third through hole 432. At the same time, there are also multiple second plug plates 53, and the multiple second plug plates 53 are arranged in one-to-one correspondence with the multiple second through holes 431. The control frame 51 includes multiple connecting rods 9, and the multiple second plug plates 53 are arranged in one-to-one correspondence with the multiple connecting rods 9. The connecting rod 9 is connected to the second plug plate 53.

[0048] The movement of the control frame 51 drives the multiple second plug plates 53 to move simultaneously through the connecting rods 9 to control the closing of the second through holes 431. And by providing multiple second through holes 431, when the second through holes 431 are opened, the extraction liquid in the second chamber can flow out quickly, the first elastic member 44 rebounds quickly to drive the mounting frame 41 to move, and at the same time increase the upward movement stroke of the mounting frame 41 to drive the extraction liquid in the first chamber to backwash the filter screen 2.

[0049] Referring to Figure 3 、 Figure 4 、 Figure 5 Inside the tank body 1, a second partition plate 6 is provided. The second partition plate 6 is arranged above the filter net 2 and the mounting rack 41. A fourth through hole 61 is formed in the second partition plate 6. The fourth through hole 61 and the first through hole 421 are arranged in the same vertical direction. A mounting rod 411 is provided on the mounting rack 41. The mounting rack 41 passes through the filter net 2 and is connected to the mounting rod 411. A third plugging plate 412 is provided on the mounting rod 411. The third plugging plate 412 corresponds to the fourth through hole 61. The third plugging plate 412 can move into the fourth through hole 61 to cooperate with the fourth through hole 61 to block the fourth through hole 61.

[0050] Both the third plugging plate 412 and the first plugging plate 52 are connected to the mounting rack 41. When the mounting rack 41 moves, it drives the first plugging plate 52 and the third plugging plate 412 to move synchronously. When driving the third plugging plate 412 to cooperate with the fourth through hole 61, the second elastic member 54 drives the first plugging plate 52 to cooperate with the first through hole 421.

[0051] During filtration, the extraction liquid entering the tank body 1 through the feed port 13 reaches the third plugging plate 412. Along with the liquid on the third plugging plate 412, it enters the filter net 2 through the fourth through hole 61 and is filtered by the filter net 2.

[0052] Referring to Figure 1 、 Figure 2 A communication port 11 is formed on the side wall of the tank body 1. The communication port 11 is arranged above the filter net 2 and corresponds to the upper end of the collection frame 3. That is, the collection frame 3 is communicated with the inside of the tank body 1 through the communication port 11. A plugging ring 7 is provided on the side wall of the tank body 1. The plugging ring 7 is slidably assembled up and down in the tank body 1. The outer side of the plugging ring 7 is in sliding contact with the inner wall of the tank body 1.

[0053] During filtration, the plugging ring 7 slides downward to the communication port 11 to block the communication port 11. When backwashing the filter net 2, the plugging ring 7 moves upward to open the communication port 11 so as to collect the backwashed impurities into the collection frame 3.

[0054] Referring to Figure 1 A collection pipe 31 is provided at the bottom of the collection frame 3. The impurities collected in the collection frame 3 can be discharged through the collection pipe 31 for centralized treatment.

[0055] Referring to Figure 1 、 Figure 3 、 Figure 6, the second partition plate 6 is slidably assembled up and down in the tank body 1. A receiving frame 12 is arranged in the tank body 1. The receiving frame 12 is arranged above the second partition plate 6 and is fixedly connected to the tank body 1. A third elastic member 62 is arranged between the receiving frame 12 and the second partition plate 6. The third elastic member 62 is set as a spring. Two ends of the third elastic member 62 are respectively connected to the receiving frame 12 and the second partition plate 6. The third elastic member 62 is used to drive the second partition plate 6 to move upward. A clamping plate 63 is arranged on the second partition plate 6. The second partition plate 6 is connected to the sealing ring 7 through the clamping plate 63.

[0056] In the initial state, the sealing ring 7 is separated from the communication port 11, the third plug plate 412 is matched with the fourth through hole 61, and the fourth through hole 61 is in a blocked state. After the extraction liquid enters onto the second partition plate 6, the second partition plate 6 moves downward under the action of gravity, and at the same time drives the sealing ring 7 to move to the communication port 11 to seal the upper end of the collection frame 3. As the extraction liquid continues to increase, the third plug plate 412 moves downward under the action of gravity to open the fourth through hole 61, and at the same time compresses the first elastic member 44. When the first elastic member 44 rebounds to drive the mounting frame 41 to move, after driving the third plug plate 412 to be matched with the fourth through hole 61, the mounting frame 41 continues to move to drive the sealing ring 7 to move through the third plug plate 412 to open the communication port 11.

[0057] Refer to Figure 1 , Figure 3 , Figure 5 , Figure 8 , a switch rod 8 is slidably assembled up and down in the receiving frame 12. A fourth plug plate 81 is arranged at the upper end of the switch rod 8. The fourth plug plate 81 corresponds to the feed port 13. When the fourth plug plate 81 moves into the feed port 13, the feed port 13 is blocked. The fourth plug plate 81 is arranged above the receiving frame 12. A fourth elastic member 82 is arranged between the fourth plug plate 81 and the receiving frame 12. The fourth elastic member 82 is set as a spring. The fourth elastic member 82 is respectively connected to the fourth plug plate 81 and the receiving frame 12. The fourth elastic member 82 is used to drive the fourth plug plate 81 to move into the feed port 13.

[0058] In the initial state, the fourth plug plate 81 is located in the feed port 13. As the extraction liquid is introduced, the fourth plug plate 81 moves downward under the action of the gravity of the extraction liquid to open the feed port 13.

[0059] The lower end of the switch rod 8 sequentially passes through the third plug plate 412, the filter net 2, the first plug plate 52 and extends to the third through hole 432. A fifth plug plate 83 is arranged at the bottom of the switch rod 8. The fifth plug plate 83 corresponds to the third through hole 432. The fifth plug plate 83 moves to block the third through hole 432.

[0060] When the blocking plate four 81 moves to open the feed port 13, the blocking plate five 83 moves into the through hole three 432 to close the through hole three 432. After the extraction liquid enters the second chamber, as the liquid level in the second chamber rises, the bottom plate 43 moves downward to drive the mounting frame 41 to move, so that the through hole three 432 moves away from the blocking plate five 83 to open the through hole three 432, so as to keep a certain liquid level height in the second chamber and enable the first elastic member 44 to be quickly released when the through hole two 431 is opened.

[0061] By arranging the blocking plate five 83, when the through hole three 432 is in an open state, there is a gap between the blocking plate five 83 and the bottom plate 43 to control the outflow speed of the extraction liquid passing through the through hole three 432, so that a certain amount of extraction liquid can remain on the bottom plate 43.

[0062] Refer to Figure 5 , guide inclined surfaces 423 are provided on both the partition plate one 42 and the partition plate two 6. The guide inclined surfaces 423 are circumferentially arranged around the centers of the partition plate one 42 and the partition plate two 6, and the inner sides of the guide inclined surfaces 423 are inclined downward, that is, the side of the guide inclined surface 423 close to the center of the partition plate one 42 is at the lowest point, so as to make the extraction liquid flow to the centers of the partition plate one 42 and the partition plate two 6 to drain the extraction liquid.

[0063] The implementation principle of the present invention is as follows: The filtered water flows out through the partition plate one 42 and the bottom plate 43. When the filter screen 2 is blocked, the through hole one 421 is closed, and at the same time the through hole two 431 is opened. The extraction liquid on the bottom plate 43 quickly flows out through a plurality of through holes two 431, so that the gravity received by the bottom plate 43 is quickly reduced. The first elastic member 44 drives the mounting frame 41 to move upward through the bottom plate 43, and then drives the extraction liquid on the partition plate one 42, that is, the extraction liquid in the first chamber, to move upward to contact the lower part of the filter screen 2 to backwash the filter screen 2, and at the same time collect the backwashed impurities into the collection frame 3. After backwashing, as the extraction liquid continues to increase, the through hole one 421 is opened again for filtration, so as to realize filtering the impurities in the extraction liquid without stopping the machine, and at the same time cleaning the impurities on the filter screen 2, reducing the phenomenon of blockage of the filter screen 2 and improving the filtration efficiency.

[0064] The present invention also discloses an extract purification method using the above extract purification device.

[0065] An extract purification method includes the following steps: S1, introducing the extraction liquid to be filtered into the feed port 13. The extraction liquid in the feed port 13 drives the blocking plate four 81 to move downward to open the feed port 13, and the extraction liquid enters the tank body 1; S2, while the blocking plate four 81 moves downward, it drives the switch rod 8 to move, and the switch rod 8 drives the blocking plate five 83 to move into the through hole three 432 to close the through hole three 432; S3. The extraction liquid enters onto the second partition plate 6, driving the second partition plate 6 to move downward until the sealing ring 7 moves to the communication port 11 to seal the communication port 11. S4. The extraction liquid on the second partition plate 6 gradually increases, driving the third blocking plate 412 to separate from the fourth through hole 61, opening the fourth through hole 61, and the extraction liquid enters the filter net 2. S5. The extraction liquid filtered by the filter net 2 enters above the first partition plate 42. As the liquid level on the first partition plate 42 gradually increases, it drives the first blocking plate 52 to separate from the first through hole 421, opening the first through hole 421. S6. When the first blocking plate 52 moves downward, it drives the second blocking plate 53 to also move downward to block the second through hole 431. S7. The extraction liquid passes through the first through hole 421 and enters the bottom plate 43. After the extraction liquid on the bottom plate 43 gradually increases, the bottom plate 43 moves downward, causing the bottom plate 43 to separate from the fifth blocking plate 83 and opening the third through hole 432. At this time, the extraction liquid flows out through the third through hole 432. S8. When the mounting frame 41 moves downward, it compresses the first elastic member 44. S9. When the filter net 2 is blocked, the extraction liquid on the first partition plate 42 gradually decreases, the pressure on the first blocking plate 52 gradually decreases, and the second elastic member 54 drives the first blocking plate 52 to move upward to the initial position to close the first through hole 421. S10. When the first blocking plate 52 moves upward, it drives the second blocking plate 53 to separate from the second through hole 431 through the control frame 51, and the extraction liquid on the bottom plate 43 is discharged through the second through hole 431 and the third through hole 432 simultaneously. S11. Subsequently, the first elastic member 44 drives the mounting frame 41 to move upward, and the mounting frame 41 drives the first partition plate 42 to move upward, bringing the extraction liquid on the first partition plate 42 into contact with the lower part of the filter net 2 to backwash the filter net 2. S12. At the same time, after the mounting frame 41 drives the third blocking plate 412 to cooperate with the fourth through hole 61, it drives the second partition plate 6 to move upward, causing the sealing ring 7 to move upward to open the communication port 11, and collecting the impurities after backwashing into the collection box 3.

[0066] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. An extract purification device, comprising a tank body, characterized in that, A filter screen, a collection box, a sliding assembly, and a control assembly are arranged inside the tank body. The upper end of the collection box is communicated with the inside of the tank body and corresponds to the upper side of the filter screen. The sliding assembly includes: a mounting frame that slides up and down inside the tank body, a first partition plate and a bottom plate connected to the mounting frame, and a first elastic member connecting the bottom plate and the tank body. The first partition plate and the bottom plate are sequentially arranged below the filter screen. A first through hole is formed in the first partition plate, and a second through hole and a third through hole are formed in the bottom plate. The control assembly cooperates with the first partition plate and the bottom plate to respectively control the closing of the first through hole and the second through hole. The extraction liquid filtered by the filter screen enters onto the first partition plate. As the extraction liquid increases, the control assembly opens the first through hole and closes the second through hole. The extraction liquid sequentially passes through the first through hole and the third through hole and is discharged outside the tank body. At the same time, the extraction liquid drives the first partition plate and the bottom plate to move downward and compress the first elastic member. When the filter screen is blocked and the extraction liquid on the first partition plate decreases, the control assembly closes the first through hole and opens the second through hole. The extraction liquid on the bottom plate flows out through the second through hole and the third through hole, and the first elastic member drives the mounting frame to move upward. The impurities on the filter screen are backflushed into the collection box by the extraction liquid remaining on the first partition plate.

2. The extract purification device according to claim 1, characterized in that, The control assembly includes a control frame, a first blocking plate, a second blocking plate, and a second elastic member. A sliding rod is arranged on the first partition plate. The control frame is slidably matched with the sliding rod up and down. The second elastic member is respectively connected to the control frame and the sliding rod to drive the control frame to move upward. The first blocking plate and the second blocking plate are both installed on the control frame. The first blocking plate corresponds to the first through hole, and the second blocking plate corresponds to the second through hole. When the first blocking plate is separated from the first through hole, the second blocking plate cooperates with the second through hole to block the second through hole.

3. The extract purification device according to claim 2, wherein, A second partition plate is arranged inside the tank body. The second partition plate is arranged above the filter screen and the mounting frame. A fourth through hole is formed in the second partition plate. A third blocking plate is arranged on the mounting frame. The third blocking plate cooperates with the fourth through hole to block the fourth through hole.

4. The extract purification device according to claim 3, characterized in that, A communication port is formed in the side wall of the tank body. The inside of the tank body is communicated with the collection box through the communication port. A sealing ring is slidably assembled up and down inside the side wall of the tank body. When the sealing ring moves into the communication port, it is used to block the communication port.

5. The extract purification device according to claim 4, characterized in that The second partition plate is slidably assembled up and down inside the tank body. A receiving frame is fixedly arranged inside the tank body. The receiving frame is arranged above the second partition plate. A third elastic member is arranged between the second partition plate and the receiving frame. The third elastic member is used to drive the second partition plate to move upward. A clamping plate is arranged on the second partition plate. The clamping plate is connected to the sealing ring.

6. The extract purification device according to claim 5, characterized in that, A switch rod is slidably assembled up and down inside the receiving frame. A fourth blocking plate is arranged at the top of the switch rod. The fourth blocking plate corresponds to the feed inlet of the tank body. A fourth elastic member is arranged between the fourth blocking plate and the receiving frame. The fourth elastic member is used to drive the fourth blocking plate to move into the feed inlet to close the feed inlet.

7. The extract purification device according to claim 6, characterized in that, The bottom of the switch rod sequentially passes through the third blocking plate, the filter screen, and the first blocking plate and extends to the third through hole. A fifth blocking plate is arranged at the bottom of the switch rod. The fifth blocking plate cooperates with the third through hole to block the third through hole.

8. The extract purification device according to claim 3, characterized in that, Guide slopes are circumferentially formed on the upper sides of the first partition plate and the second partition plate. The inner sides of the guide slopes incline downward.

9. The extract purification device according to claim 2, wherein A plurality of second through holes are arranged around the third through hole. A plurality of second blocking plates are correspondingly arranged for the plurality of second through holes. The control frame includes a plurality of connecting rods. A plurality of second blocking plates are correspondingly arranged for the plurality of connecting rods one by one. The connecting rods are connected to the second blocking plates.

10. A method for purifying an extract, using the extract purification device as described in claim 7, characterized in that, It includes the following steps: After the extraction liquid is filtered, it enters onto the second partition plate, drives the second partition plate to move downward until the sealing ring moves to the communication port to block the communication port. The extraction liquid on the second partition board gradually increases, driving the third plug board to separate from the fourth through hole, opening the fourth through hole, and the extraction liquid enters the filter screen; After filtration, the extraction liquid enters above the first partition board. As the liquid level on the first partition board gradually increases, it drives the first plug board to separate from the first through hole, opening the first through hole; When the first plug board moves downward, it drives the second plug board to move downward as well, blocking the second through hole; The extraction liquid passes through the first through hole and enters the bottom plate. After the extraction liquid on the bottom plate gradually increases, the bottom plate moves downward, causing the bottom plate to separate from the fifth plug board and opening the third through hole. At this time, the extraction liquid flows out through the third through hole; When the mounting frame moves downward, it compresses the first elastic member; When the filter screen is blocked, the extraction liquid on the first partition board gradually decreases, and the pressure on the first plug board gradually decreases. The second elastic member drives the first plug board to move upward to the initial position, closing the first through hole; At the same time, the control frame drives the second plug board to separate from the second through hole, and the extraction liquid on the bottom plate is discharged through the second through hole and the third through hole simultaneously; Subsequently, the first elastic member drives the mounting frame to move upward, and the mounting frame drives the first partition board to move upward, bringing the extraction liquid on the first partition board into contact with the lower part of the filter screen to backwash the filter screen; At the same time, after the mounting frame drives the third plug board to cooperate with the fourth through hole, it drives the second partition board to move upward, so that the sealing ring moves upward, opening the communication port, and collecting the impurities after backwashing into the collection box.

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