Liquorice extractor

Abstract

The invention relates to the technical field of licorice extraction, and discloses a licorice extractor which comprises an extraction tank and a mounting frame, a licorice feed port and a licorice waste residue discharge port are formed in the side wall of the extraction tank, and an upper pressing piece and a lower pressing piece which are oppositely arranged are movably connected to the interior of the extraction tank; the upper end and the lower end of the outer side of the extraction tank are correspondingly and movably sleeved with an upper annular magnet and a lower annular magnet which are used for adsorbing the upper pressing piece and the lower pressing piece through magnetic force respectively; a notch through which the liquorice feed port passes is formed in the upper annular magnet; transmission mechanisms used for controlling the upper annular magnet and the lower annular magnet to independently slide up and down are correspondingly mounted on the mounting frame and located at the top end and the bottom of the extraction tank respectively, the upper pressing part and the lower pressing part independently move and have multiple movement postures, stirring of water-absorbing licorice roots can be achieved, extrusion of the water-absorbing licorice roots can also be achieved, and the water-absorbing licorice root extraction device is simple in structure and convenient to use. Meanwhile, the waste residues are automatically guided to the residue outlet along the filter screen by utilizing the gravity of the waste residues, so that the whole extraction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of licorice extraction, and particularly relates to a licorice extractor. Background Art

[0002] Licorice extract is a medicinally valuable ingredient extracted from licorice. It is a yellow to brownish-yellow powder and is used to treat some specific diseases of patients. Generally, an extraction device is required for extraction during the extraction process.

[0003] In existing extraction operations, licorice is usually sliced or cut into strips, and then placed in a solvent or water to extract the juice of licorice. Then, the effective components of licorice are extracted by purifying the licorice juice. In the prior art, for example, an industrial extraction device and its extraction method for ultra-high temperature continuous countercurrent extraction of licorice disclosed in the publication number: CN110354529A, characterized in that the shredded licorice is passed through a rotary extraction tank to drive the water in the extraction tank to quickly wash the licorice, thereby improving the extraction efficiency of licorice.

[0004] Although the above-mentioned published application can achieve the extraction of licorice, during the process of soaking and swelling licorice in ultra-high temperature water, the water content inside licorice increases, and a large amount of effective components of licorice accumulate inside. Once it absorbs water and swells, it is very difficult to fully filter the water-absorbed licorice only under the stirring action inside the extraction tank, resulting in a low content of effective components of licorice in the extraction liquid. Even if you want to achieve the effect of filtering dry, it is necessary to stand for a long time, which will also increase the extraction time and reduce the extraction efficiency. At the same time, this device also needs to manually disassemble the entire device for cleaning the waste residue, which is rather cumbersome and time-consuming. Summary of the Invention

[0005] The purpose of the present invention is to provide a licorice extractor to solve the technical problems in the existing devices.

[0006] To solve the above technical problems, the present invention specifically provides the following technical solution: A licorice extractor includes an extraction tank for preparing licorice extract, and a mounting frame installed on the outer periphery of the extraction tank. A licorice feed inlet and a licorice waste discharge outlet are provided on the side wall of the extraction tank, and an upper pressing member and a lower pressing member are relatively and movably connected inside the extraction tank;

[0007] Upper and lower annular magnets that magnetically adsorb the upper pressing member and the lower pressing member are respectively and relatively movably sleeved on the upper and lower ends of the outside of the extraction tank. A notch for passing the licorice feed inlet is provided on the upper annular magnet for guiding the licorice introduced through the licorice feed inlet onto the surface of the lower pressing member;

[0008] A transmission mechanism for controlling the independent up-and-down sliding of the upper annular magnet and the lower annular magnet is respectively installed on the mounting bracket corresponding to the top and bottom of the extraction tank.

[0009] Under the independent drive of the two transmission mechanisms, different motion postures are driven between the upper pressing member and the lower pressing member to realize automatic feeding on the surface of the lower pressing member and extrusion filtration between the upper pressing member and the lower pressing member.

[0010] Wherein, a lifting member is arranged on the lower pressing member, and the lifting member can automatically introduce the waste residue accumulated on the lower pressing member into the glycyrrhiza waste residue discharge port for discharge under the action of its own gravity.

[0011] As a preferred scheme of the present invention, a liquid inlet is arranged at the top of the extraction tank, a liquid outlet is arranged at the bottom of the extraction tank, and both the liquid inlet and the liquid outlet are communicated with the extraction tank.

[0012] As a preferred scheme of the present invention, the lower pressing member includes a lower annular seat and a lower filter screen. The lower annular seat is slidably connected to the inner cavity of the extraction tank and magnetically attracted to the lower annular magnet. A storage tank is opened at the center of the inner cavity of the lower annular seat along its own length direction, and an activity groove for placing the lifting member is opened on the side wall of the storage tank;

[0013] One end of the lower filter screen is hinged to the bottom of the storage tank, and the other end is hinged to the lifting member. The upper pressing member can be inserted into the storage tank under the drive of the transmission mechanism and squeeze the lower filter screen;

[0014] A material guiding channel is opened on the side wall of the lower annular seat. The two ends of the material guiding channel can be respectively communicated with the storage tank and the glycyrrhiza waste residue discharge port correspondingly, and the material guiding channel is located above the lower filter screen. As a preferred scheme of the present invention, the gas making machine is a machine for making argon gas to produce high-concentration argon gas.

[0015] As a preferred scheme of the present invention, an opening is opened on the surface of the lower annular magnet, and the opening can be correspondingly communicated with the glycyrrhiza waste residue discharge port.

[0016] As a preferred scheme of the present invention, the lifting member includes a driving motor, a lead screw and a slider. The driving motor is installed at the top of the activity groove. One end of the lead screw is connected to the driving motor, and the other end is rotatably connected to the bottom of the activity groove. The slider is threadedly connected to the lead screw, and the outer side wall of the slider is hinged to the lower filter screen.

[0017] As a preferred embodiment of the present invention, a slideway is formed on the surface of the slider, a guide rod is fixedly installed in the inner cavity of the slideway, a guide block connected to the slideway is slidably sleeved on the guide rod, and one end of the guide block extending out of the slideway is hinged to the lower filter screen;

[0018] A return spring sleeved on the guide rod is connected between the slider and the slideway.

[0019] As a preferred embodiment of the present invention, the upper pressing member includes an upper annular seat, a cross-shaped fixing frame and an upper filter screen. The upper annular seat is movably installed in the inner cavity of the extraction tank and magnetically connected to the upper annular magnet. The cross-shaped fixing frame is fixedly installed in the inner cavity of the upper annular seat. A connecting rod is connected between the upper annular seat and the upper filter screen.

[0020] As a preferred embodiment of the present invention, an annular material guiding seat is arranged on the lower annular seat at the opening of the storage tank, and the cross section of the annular material guiding seat is in an inverted funnel shape.

[0021] As a preferred embodiment of the present invention, the mounting frame includes several support rods and two connecting seats. The two connecting seats are respectively connected and fixed to the top and bottom between the respective support rods. Plug-in grooves for plugging and fixing the extraction tank are formed on the surfaces of the two connecting seats;

[0022] The two transmission mechanisms are respectively arranged on the two corresponding connecting seats. The transmission mechanism includes a motor installed on the connecting seat, and a threaded rod rotatably connected to both connecting seats and driven by the motor to rotate. Transmission blocks are connected to the two threaded rods through threads, and the two transmission blocks are respectively fixedly connected to the upper annular magnet and the lower annular magnet correspondingly.

[0023] The present invention has the following beneficial effects compared with the prior art:

[0024] The device clamps licorice by arranging an upper pressing member and a lower pressing member inside the extraction tank, and realizes the extrusion of the water-absorbed licorice under the movement of the upper pressing member and the lower pressing member, reducing the content of medicinal residues in the licorice extract. Moreover, the upper pressing member and the lower pressing member can move independently, and both have multiple movement postures, which can not only realize the turning of the water-absorbed licorice, but also realize the extrusion of the water-absorbed licorice, further reducing the content of medicinal residues in the licorice extract;

[0025] At the same time, the upper pressing member and the lower pressing member with multiple movement postures can also realize automatic feeding, and the filter screen in the lower pressing member is arranged to be liftable. On the one hand, the liftable filter screen can cooperate with the upper pressing member to extrude the licorice. On the other hand, it can also lift the waste residue accumulated on the filter screen of the lower pressing member to a certain height, and use the gravity of the waste residue itself to automatically discharge the waste residue along the filter screen to the slag outlet, thereby improving the overall extraction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary. For those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained according to the provided drawings by extension.

[0027] Figure 1 Schematic diagram of the overall structure of the present invention;

[0028] Figure 2 Of the present invention Figure 1 Schematic diagram of the sectional structure;

[0029] Figure 3 Of the present invention Figure 2 Schematic diagram of the structure when the upper pressing member and the lower pressing member are mutually pressed in the middle and upper part;

[0030] Figure 4 Of the present invention Figure 1 Schematic diagram of the connection structure between the mounting bracket and the transmission mechanism in the middle;

[0031] Figure 5 Of the present invention Figure 3 Schematic diagram of the structure of the upper pressing member in the middle and upper part;

[0032] Figure 6 Of the present invention Figure 3 Schematic diagram of the structure of the lower pressing member in the middle and lower part;

[0033] Figure 7 Of the present invention Figure 6 Schematic diagram of the sectional structure of the lower annular seat along the movable groove;

[0034] The reference numerals in the figure are respectively represented as follows:

[0035] 1, extraction tank; 2, mounting bracket; 3, upper pressing member; 4, lower pressing member; 5, licorice feed inlet; 6, licorice residue discharge outlet; 7, transmission mechanism; 8, lifting member; 9, lower annular magnet; 10, upper annular magnet; 11, liquid inlet; 12, liquid outlet; 13, opening; 14, annular guide seat; 15, slideway; 16, guide rod; 17, guide block; 18, return spring; 19, notch; 20 - projection block;

[0036] 21, support rod; 22, connecting seat; 23, insertion slot;

[0037] 31, upper annular seat; 32, cross fixing frame; 33, upper filter screen;

[0038] 41. Lower annular seat; 42. Lower filter screen; 43. Storage tank; 44. Movable slot; 45. Feeding channel;

[0039] 71. Motor; 72. Threaded rod; 73. Transmission block;

[0040] 81. Driving motor; 82. Lead screw; 83. Slide block. Detailed implementation manner

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] As Figures 1-7 shown, a licorice extractor includes an extraction tank 1 for preparing licorice extract, and a mounting frame 2 installed on the outer periphery of the extraction tank 1. A licorice feed inlet 5 and a licorice residue discharge outlet 6 are provided on the side wall of the extraction tank 1. An upper pressing member 3 and a lower pressing member 4 are movably connected inside the extraction tank 1 and are arranged oppositely;

[0043] Upper and lower ends of the outer side of the extraction tank 1 are respectively movably sleeved with an upper annular magnet 10 and a lower annular magnet 9 that magnetically adsorb the upper pressing member 3 and the lower pressing member 4. A notch 19 for the licorice feed inlet 5 to pass through is provided on the upper annular magnet 10, so as to allow the licorice introduced from the licorice feed inlet 5 to enter the surface of the lower pressing member 4;

[0044] On the mounting frame 2, transmission mechanisms 7 for controlling the independent up and down sliding of the upper annular magnet 10 and the lower annular magnet 9 are respectively installed corresponding to the top and bottom of the extraction tank 1;

[0045] Under the independent transmission of the two transmission mechanisms 7, different motion postures are driven between the upper pressing member 3 and the lower pressing member 4, so as to realize automatic feeding on the surface of the lower pressing member 4 and extrusion filtration between the upper pressing member 3 and the lower pressing member 4;

[0046] Among them, a lifting member 8 is arranged on the lower pressing member 4, and the lifting member 8 can automatically introduce the waste residue accumulated on the lower pressing member 4 into the licorice residue discharge outlet 6 for discharge under the action of its own gravity.

[0047] Among them, the lower pressing member 4 includes a lower annular seat 41 and a lower filter screen 42. The lower annular seat 41 is slidably connected to the inner cavity of the extraction tank 1 and is magnetically attracted to the lower annular magnet 9. A lifting member 8 is arranged on the lower annular seat 41. One end of the lower filter screen 42 is hinged to the bottom of the storage tank 43, and the other end is hinged to the lifting member 8;

[0048] The lifting member 8 is used to lift one side of the lower filter screen 42 and rotate the other side around the position of the hinged storage tank 43, so that the waste residue accumulated on the pressing member 4 moves and is discharged towards the liquorice waste residue discharge port 6 under the action of its own gravity.

[0049] This device clamps the liquorice by arranging an upper pressing member and a lower pressing member inside the extraction tank, and realizes the extrusion of the water-absorbed liquorice under the movement of the upper pressing member and the lower pressing member, reducing the content of medicinal residues in the liquorice extract. Moreover, the upper pressing member and the lower pressing member can move independently, and both have a variety of motion postures, which can not only realize the turning of the water-absorbed liquorice, but also realize the extrusion of the water-absorbed liquorice, further reducing the content of medicinal residues in the liquorice extract.

[0050] At the same time, the upper pressing member and the lower pressing member with a variety of motion postures can also realize automatic feeding, and the filter screen in the lower pressing member is set to be liftable. On the one hand, the liftable filter screen can cooperate with the upper pressing member to extrude the liquorice. On the other hand, it can also lift the waste residue accumulated on the filter screen of the lower pressing member to a certain height, and use the gravity of the waste residue to automatically discharge the waste residue along the filter screen to the slag discharge port, thereby improving the overall extraction efficiency.

[0051] Specifically, as Figures 1-2 shown, a liquid inlet 11 is provided at the top of the extraction tank 1, and a liquid outlet 12 is provided at the bottom of the extraction tank 1. Both the liquid inlet 11 and the liquid outlet 12 are communicated with the extraction tank 1.

[0052] Warm water or a corresponding solvent is added to the extraction tank 1 through the liquid inlet 11, and the liquorice raw material located between the lower pressing member 4 and the upper pressing member 3 is soaked by the warm water or the corresponding solvent, so as to extract the effective components in the liquorice raw material. The liquid outlet 12 mainly discharges the extract after being squeezed and filtered by the lower pressing member 4. Among them, the liquid outlet 12 can transport the extract to another tank through a connecting pipe for further purification.

[0053] Specifically, as Figure 3 shown in Figure 6 figure, the lower pressing member 4 includes a lower annular seat 41 and a lower filter screen 42. The lower annular seat 41 is slidably connected to the inner cavity of the extraction tank 1 and magnetically attracted to the lower annular magnet 9. A storage tank 43 is provided at the center of the inner cavity of the lower annular seat 41 along its own length direction, and a guide channel 44 for placing the lifting member 8 is provided on the side wall of the storage tank 43;

[0054] One end of the lower filter screen 42 is hinged to the bottom of the storage tank 43, and the other end is hinged to the lifting member 8. The upper pressing member 3 can be inserted into the storage tank 43 and press the lower filter screen 42 under the drive of the transmission mechanism 7;

[0055] A guide channel 45 is provided on the side wall of the lower annular seat 41. The two ends of the guide channel 45 can be respectively communicated with the storage tank 43 and the liquorice waste residue discharge port 6, and the guide channel 45 is located above the lower filter screen 42.

[0056] The licorice introduced through the licorice feed port 5 enters the lower filter screen 42 for storage. During storage, the licorice raw material is generally spread flat on the lower filter screen 42. Once the lower filter screen 42 is tilted, the licorice raw material will gather at a single point, which is not conducive to the extrusion of the upper pressure piece 3. Therefore, the installation position of the lower filter screen 42 needs to be controlled by the lifting piece 8.

[0057] Specifically, Figure 1 and Figures 6-7 As shown, the lifting member 8 includes a driving motor 71, a screw rod 82 and a slider 83. The driving motor 71 is installed at the top of the material guide channel 44. One end of the screw rod 82 is connected to the driving motor 71, and the other end is rotatably connected to the bottom of the material guide channel 44. The slider 83 is threadedly connected to the screw rod 82, and the outer wall of the slider 83 is hinged to the lower filter screen 42.

[0058] Among them, when the slider 83 slides up and down along the screw rod 82, the height of the lower filter 42 is continuously raised, and because one end of the lower filter 42 is hinged and fixed, in order to meet the lifting of the lower filter 42, a retractable mechanism needs to be set between the slider 83 and the lower filter 42.

[0059] Further, such as Figures 6-7 As shown, a slide 15 is provided on the surface of the slider 83, and a guide rod 16 is fixedly installed in the inner cavity of the slide 15. A guide block 17 connected to the slide 15 is slidably sleeved on the guide rod 16. One end of the guide block 17 extends out of the slide 15 and is hinged to the lower filter 42. A protruding block 20 is provided on the edge of the lower filter 42 facing the guide block 17, and is hinged to the end of the guide block 17 through the protruding block 20, wherein the connection position of the protruding block 20 and the guide block 17 is always located in the slide 15 and during the lifting process of the slider 83.

[0060] And in this embodiment, the length of the upper edge of the slide 15 along the radial direction of the filter 42 toward the center of the filter 42 is greater than the length of the lower edge of the slide 15, which means that the end hinge position of the protrusion block 20 and the guide block 17 never separates from the upper edge of the slide 15, and when the slider 83 moves upward along the screw 82, space is left for the rotation of the protrusion block 20 and the guide block 17.

[0061] The purpose is that when the slider 83 is driven to the set position, the connection between the protrusion block 20 and the guide block 17 remains horizontal, and the upper surface of the integral connection contacts the inner upper wall surface of the slideway 15, thereby keeping the filter screen 42 horizontal.

[0062] This is equivalent to applying force to the edge of the filter screen 42 through the slider 83 under the drive of the lead screw 82, that is, this method can ensure that the filter screen 42 always remains horizontal when carrying the liquorice material and under pressure.

[0063] A return spring 18 sleeved on the guide rod 16 is connected between the slider 83 and the slideway 15. The return spring 18 is used to prevent the guide block 17 from detaching from the slideway 15 and to provide the initial position for the guide block 17 to move back to its set position in the slideway 15. At this time, the filter screen 42 is in a horizontal state.

[0064] Furthermore, for locking the position of the filter screen 42 in the horizontal state, sensors, including Hall sensors or distance sensors, can be arranged on the inner upper wall surface of the slideway 15, and detected parts, such as coils, can be arranged on the raised block 20. In this way, when the filter screen 42 is horizontal, the connection between the raised block 20 and the guide block 17 remains horizontal, and the overall upper surface of the connection contacts the inner upper wall surface of the slideway 15. The sensor can obtain the current horizontal state of the filter screen, and then form a control signal for the driving motor 71 (not shown in the figure).

[0065] Furthermore, in this embodiment, the hinged structure between the guide block 17 and the raised block 20 can be a one-way bearing, and the one-way bearing is used to define its horizontal state.

[0066] In this way, the lead screw driving motor 71 can only drive the slider 83 to move upward through the lead screw 82 and cannot move downward after the filter screen 42 is horizontal.

[0067] Among them, the depth of the slideway 15 is less than the distance between the side wall of the lead screw 82 and the outer wall of the slider 83 to avoid interfering with the rotation of the lead screw 82.

[0068] That is, when the slider 83 moves upward or downward, the lower filter screen 42 will correspondingly pull the guide block 17 to slide out a certain distance along the slider 83 to meet the displacement of the lower filter screen 42, and the deformed return spring 18 can always ensure the fit between the guide block 17 and the lower filter screen 42.

[0069] Since the upper pressing member 3 should not only meet the extrusion of the lower pressing member 4 but also meet the liquid flow entering from the liquid inlet 11, the structure of the upper pressing member 3 needs to meet the requirements of passability.

[0070] Specifically, as Figure 1 、 Figure 3 and Figure 5 shown, the upper pressing member 3 includes an upper annular seat 31, a cross fixing frame 32 and an upper filter screen 33. The upper annular seat 31 is movably installed in the inner cavity of the extraction tank 1 and is magnetically attracted to the upper annular magnet 10. The cross fixing frame 32 is fixedly installed in the inner cavity of the upper annular seat 31. A connecting rod is connected between the upper annular seat 31 and the upper filter screen 33.

[0071] This can ensure that the upper filter screen 33 can be accurately inserted into the lower filter screen 42.

[0072] Since the lower annular magnet 9 can cover the liquorice residue discharge port 6 during its sliding process, and the lower annular seat 41 and the lower annular magnet 9, therefore, when the lower annular magnet 9 stops sliding, the lower annular magnet 9 also needs to have an opening communicating with the liquorice residue discharge port 6.

[0073] Specifically, as Figures 1-7 shown, an opening 13 is formed on the surface of the lower annular magnet 9, and the opening 13 can communicate with the liquorice residue discharge port 6 correspondingly.

[0074] Among them, there is a large gap between the lower annular seat 41 and the side wall of the extraction tank 1. The liquorice raw materials entering from the liquorice feed port 5 are likely to fall into this gap. Once falling into this area, the upper pressing member 3 will not be able to press these retained principles, resulting in waste. Therefore, it is necessary to ensure that the liquorice raw materials entering from the liquorice feed port 5 can completely fall into the storage.

[0075] Specifically, as Figures 1-7 shown, an annular guide seat 14 is provided on the lower annular seat 41 at the opening of the storage tank 43, and the cross-section of the annular guide seat 14 is in the shape of an inverted funnel.

[0076] The inclined contact surface facilitates the sliding of the liquorice raw materials, thereby reducing the retention of the liquorice raw materials in the gap between the lower annular seat 41 and the side wall of the extraction tank 1.

[0077] Specifically, the mounting frame 2 includes several support rods 21 and two connecting seats 22. The two connecting seats 22 are respectively connected and fixed to the top and bottom between each support rod 21. Plug-in grooves 23 for plugging and fixing the extraction tank 1 are formed on the surfaces of the two connecting seats 22;

[0078] Two transmission mechanisms 7 are respectively arranged on the two corresponding connecting seats 22. The transmission mechanism 7 includes a motor 71 mounted on the connecting seat 22, and a threaded rod 72 that is rotatably connected to both connecting seats 22 and driven by the motor 71 to rotate. Two transmission blocks 73 are threadedly connected to both threaded rods 72, and the two transmission blocks 73 are respectively fixedly connected to the upper annular magnet 10 and the lower annular magnet 9 correspondingly.

[0079] Among them, the two transmission mechanisms 7 can move independently. When feeding is required, one transmission mechanism 7 drives the upper annular magnet 10 to slide to the highest point respectively, and the other transmission mechanism 7 drives the lower annular magnet 9 to slide to the lowest point. At this time, the feeding end of the licorice feeding port 5 is just located between the lower annular seat 41 and the upper annular seat 31, so as to realize rapid feeding. After the feeding is completed, liquid is added to the extraction tank 1 through the liquid inlet 11, and then the two transmission mechanisms 7 are started synchronously. The two transmission mechanisms 7 drive the lower annular seat 41 and the upper annular seat 31 to approach each other to achieve mutual extrusion. It is also possible that one transmission mechanism 7 moves and the other transmission mechanism 7 does not move. The movement modes are various, that is, it is sufficient to meet the movement postures of the lower annular seat 41 and the upper annular seat 31 moving up synchronously after extrusion, the lower annular seat 41 and the upper annular seat 31 moving down synchronously after extrusion, and the lower annular seat 41 moving up and down while the upper annular seat 31 remains stationary. The control can be achieved by manually operating the pre-set operating system.

[0080] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the essence and protection scope of the present application, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present application.

Claims

1. A liquorice extractor, characterized in that: The invention comprises an extraction tank (1) for preparing a liquorice extract, and a mounting frame (2) mounted on the outer periphery of the extraction tank (1); a liquorice feed port (5) and a liquorice waste residue discharge port (6) are arranged on the side wall of the extraction tank (1); an upper pressing piece (3) and a lower pressing piece (4) arranged opposite to each other are movably connected inside the extraction tank (1); An upper annular magnet (10) and a lower annular magnet (9) are movably sleeved at the upper and lower ends of the outer side of the extraction tank (1) to attract the upper pressing piece (3) and the lower pressing piece (4) by magnetic force, and a notch (19) is provided on the upper annular magnet (10) for the liquorice feed port (5) to pass through, so as to allow the liquorice introduced through the liquorice feed port (5) to enter the surface of the lower pressing piece (4); A transmission mechanism (7) for controlling the upper annular magnet (10) and the lower annular magnet (9) to slide up and down independently is installed on the mounting frame (2) at the top and bottom of the extraction tank (1) respectively corresponding to each other; Under the independent transmission of the two transmission mechanisms (7), the upper pressing piece (3) and the lower pressing piece (4) are driven to realize different motion postures, so as to realize automatic feeding of the surface of the lower pressing piece (4) and extrusion filtration between the upper pressing piece (3) and the lower pressing piece (4); The lower pressing member (4) comprises a lower annular seat (41) and a lower filter screen (42); the lower annular seat (41) is slidably connected to the inner cavity of the extraction tank (1) and is magnetically attracted to the lower annular magnet (9); a lifting member (8) is arranged on the lower annular seat (41); one end of the lower filter screen (42) is hinged to the bottom of the material storage tank (43), and the other end is hinged to the lifting member (8); The lifting member (8) is used to lift and lower one side of the lower filter screen (42), and the other side rotates around the hinged position of the storage trough (43), so that the waste residue accumulated on the lower pressing member (4) slides and is discharged toward the licorice waste residue discharge port (6) under the action of its own gravity.

2. A liquorice extractor according to claim 1, characterized in that: The top of the extraction tank (1) is provided with a liquid inlet (11), and the bottom of the extraction tank (1) is provided with a liquid outlet (12), and both the liquid inlet (11) and the liquid outlet (12) are connected to the extraction tank (1).

3. A liquorice extractor according to claim 1, characterized in that: A material storage groove (43) is provided at the center of the inner cavity of the lower annular seat (41) along its length direction, and a material guide channel (44) for placing the lifting member (8) is provided on the side wall of the material storage groove (43); The upper pressing member (3) can be inserted into the material storage tank (43) and squeeze the lower filter screen (42) under the drive of the transmission mechanism (7); A material guide channel (45) is provided on the side wall of the lower annular seat (41), and the openings at both ends of the material guide channel (45) can be respectively connected to the material storage trough (43) and the licorice waste residue discharge port (6), and the material guide channel (45) is located above the lower filter screen (42).

4. A liquorice extractor according to claim 3, characterized in that: An opening (13) is provided on the surface of the lower annular magnet (9), and the opening (13) can be correspondingly connected to the liquorice waste residue discharge port (6).

5. A liquorice extractor according to claim 3, characterized in that: The lifting member (8) includes a driving motor (71), a screw rod (82) and a slider (83); the driving motor (71) is installed at the top of the material guide channel (44); one end of the screw rod (82) is connected to the driving motor (71), and the other end is rotatably connected to the bottom of the material guide channel (44); the slider (83) is threadedly connected to the screw rod (82), and the outer wall of the slider (83) is hinged to the lower filter screen (42).

6. A liquorice extractor according to claim 5, characterized in that: A slideway (15) is provided on the surface of the slide block (83), a guide rod (16) is fixedly installed in the inner cavity of the slideway (15), a guide block (17) connected to the slideway (15) is slidably sleeved on the guide rod (16), and one end of the guide block (17) extending out of the slideway (15) is hingedly connected to the lower filter screen (42); A return spring (18) sleeved on the guide rod (16) is connected between the slide block (83) and the slideway (15).

7. A liquorice extractor according to claim 6, characterized in that: The upper pressure piece (3) comprises an upper annular seat (31), a cross fixing frame (32) and an upper filter screen (33); the upper annular seat (31) is movably mounted in the inner cavity of the extraction tank (1) and is magnetically coupled to the upper annular magnet (10); the cross fixing frame (32) is fixedly mounted in the inner cavity of the upper annular seat (31); and the upper annular seat (31) and the upper filter screen (33) are connected via a connecting rod.

8. The licorice extractor according to claim 3, characterized in that: An annular material guide seat (14) is provided on the lower annular seat (41) located at the opening of the material storage trough (43), and the cross section of the annular material guide seat (14) is in the shape of an inverted funnel.

9. A liquorice extractor according to claim 1, characterized in that: The mounting frame (2) comprises a plurality of support rods (21) and two connecting seats (22), wherein the two connecting seats (22) are respectively connected and fixed to the top and the bottom between the support rods (21), and the surfaces of the two connecting seats (22) are provided with plugging grooves (23) for the extraction tank (1) to be plugged and fixed; The two transmission mechanisms (7) are respectively connected to the two connecting seats (22), and the transmission mechanism (7) comprises a motor (71) mounted on the connecting seat (22), and a threaded rod (72) rotatably connected to the two connecting seats (22) and driven to rotate by the motor (71). The two threaded rods (72) are both connected to transmission blocks (73) by threads, and the two transmission blocks (73) are respectively fixedly connected to the upper annular magnet (10) and the lower annular magnet (9) correspondingly.

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