Plant extraction filtration device and method

Abstract

The present application relates to the technical field of filtering equipment, in particular to a plant extraction filtering device and method, comprising a bottom plate, a plurality of supporting legs, a ring-shaped cover, a lifting frame, a first lifting mechanism, a second lifting mechanism, a squeezing ring, a third lifting mechanism, a mounting box, a mounting shaft, a motor, a mounting disc and a filter cartridge; in use, the ring-shaped cover and the filter cartridge are in contact with the bottom plate and form a ring-shaped cavity, plant mixed liquid is added into the ring-shaped cavity, the squeezing ring moves downward to squeeze the material, the extraction liquid passes through the filter holes of the filter cartridge and flows out of the bottom plate for collection, and the crushed slag is intercepted in the ring-shaped cavity; after the squeezing is completed, the squeezing ring moves upward to reset, the lifting frame moves upward to drive the ring-shaped cover and the filter cartridge to move upward synchronously, the filter cake on the bottom plate is exposed and removed; after the cleaning is completed, the lifting frame moves downward to reset, the filter cartridge moves upward to separate from the bottom plate and rotates, the residual slag at the filter holes is thrown out by the centrifugal force, and the filter holes are cleaned online. Thus, the technical problem of time-consuming and labor-consuming cleaning of the filter screen of the plant extraction filtering device in the prior art is solved.

Description

Technical Field

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

[0002] Plant extracts have wide applications in food, pharmaceuticals, fragrances, and cosmetics. Taking plant fragrance extraction as an example, a typical process usually includes: raw material pretreatment (washing, drying, and pulverizing), solvent extraction (using ethanol or water as the solvent), solid-liquid separation (filtration or centrifugation), and subsequent concentration and purification steps. Among these, solid-liquid separation is one of the key steps determining extraction efficiency and product quality.

[0003] In existing plant extraction filtration devices, filter screens are commonly used as the solid-liquid separation medium. The operation is as follows: the plant mixture after crushing and soaking is placed above the filter screen, and the extract containing the target components is forced through the filter screen and into the collection container below by gravity or by applying a slight negative pressure, while larger plant debris is retained on the surface of the filter screen, thereby achieving solid-liquid separation.

[0004] However, the aforementioned separation method using filters has significant inherent drawbacks. During the filtration process, fine fibrous particles in the plant debris, with a size close to the mesh size, easily become stuck inside the mesh. Simultaneously, sticky colloidal substances adhere to the filter surface, further clogging the mesh. Therefore, after each batch of filtration is completed, the filter must be removed for high-pressure washing or brushing to remove the clogging residue, a time-consuming and labor-intensive operation. Summary of the Invention

[0005] The purpose of this invention is to provide a plant extraction filtration device and method, which aims to solve the technical problem that cleaning the filter screen of existing plant extraction filtration devices is time-consuming and laborious.

[0006] To achieve the above objectives, the present invention provides a plant extraction filtration device, comprising a base plate, multiple support legs, an annular cover, a lifting frame, a first lifting mechanism, a second lifting mechanism, a compression ring, a third lifting mechanism, a mounting box, a mounting shaft, a motor, a mounting plate, and a filter cartridge;

[0007] Multiple support legs are fixedly mounted on the bottom of the base plate; the base plate has a circular through hole; the annular cover is located on the top of the base plate; the lifting frame is fixedly mounted on the top of the annular cover; the first lifting mechanism is mounted on the top of the base plate and is used to drive the lifting frame to rise and fall; the second lifting mechanism is mounted on the lifting frame, and the compression ring is mounted on the second lifting mechanism and is driven to rise and fall by the second lifting mechanism; the third lifting mechanism is mounted on the lifting frame, and the mounting box is mounted on the third lifting mechanism and is driven to rise and fall by the third lifting mechanism; the mounting shaft is rotatably connected to the mounting box and passes through the mounting box; the motor is fixedly mounted inside the mounting box, and the output end of the motor is fixedly connected to the mounting shaft; the mounting plate is fixedly mounted on the mounting shaft, and the filter cartridge is fixedly mounted on the bottom of the mounting plate; the side wall of the filter cartridge has multiple filter holes; the axes of the circular through hole, the annular cover, the compression ring, the mounting shaft, the mounting plate, and the filter cartridge coincide on the same vertical center line.

[0008] The first lifting mechanism includes a U-shaped frame, two sliders, and two first hydraulic cylinders;

[0009] The U-shaped frame is fixedly installed on the top of the base plate; the two sliders are slidably installed inside the U-shaped frame and fixedly connected to the lifting frame; the two first hydraulic cylinders are fixedly installed inside the U-shaped frame, and the output ends of the two first hydraulic cylinders are respectively fixedly connected to the two sliders.

[0010] The second lifting mechanism includes two second hydraulic cylinders, two connecting shafts, and two oil collection baffles.

[0011] Two second hydraulic cylinders are fixedly mounted on the lifting frame; two connecting shafts are fixedly mounted on the top of the extrusion ring and respectively fixedly connected to the output ends of the two second hydraulic cylinders; two oil collecting sleeves are respectively fixedly mounted on the connecting shafts to collect the oil dripping from the second hydraulic cylinders and to prevent the extract below from splashing upwards along the connecting shafts.

[0012] The third lifting mechanism includes two guide rods, a mounting plate, a sliding seat, two connecting rods, and a third hydraulic cylinder.

[0013] Two guide rods are fixedly mounted on the top of the lifting frame; the mounting plate is fixedly mounted on the top of the two guide rods; the sliding seat is slidably mounted on the two guide rods and is penetrated by the two guide rods; the top ends of the two connecting rods are fixedly connected to the sliding seat, the bottom ends of the two connecting rods are fixedly connected to the mounting box, and the two connecting rods are also slidably connected to the lifting frame and penetrate the lifting frame; the third hydraulic cylinder is fixedly mounted on the top of the mounting plate, and the output end of the third hydraulic cylinder is fixedly connected to the sliding seat.

[0014] The top of the extrusion ring is provided with a liquid guiding cone surface;

[0015] The liquid-guiding cone is used to guide the plant extract that seeps out above the extrusion ring during the extrusion process toward the central filter cartridge.

[0016] The plant extraction filtration device also includes a liquid collection funnel;

[0017] The liquid collecting funnel is fixedly installed at the bottom of the base plate and communicates with the circular through hole.

[0018] The plant extraction filtration device also includes an annular sealing ring;

[0019] The top of the base plate is also provided with an annular groove; the annular sealing ring is disposed in the annular groove and is used to seal the gap between the bottom end of the annular cover and the base plate.

[0020] The plant extraction and filtration device also includes multiple support rods and crossbeams;

[0021] One end of each of the multiple support rods is fixedly connected to the mounting shaft, and the other end is fixedly connected to the filter cylinder and located inside the filter cylinder; the crossbeam is fixedly disposed in the circular through hole and is provided with a limiting through hole; the bottom end of the mounting shaft passes through the limiting through hole; the limiting through hole is used to constrain the radial displacement of its bottom end when the mounting shaft rotates.

[0022] The top of the crossbeam is also provided with two liquid guiding slopes;

[0023] The two inclined surfaces are used to guide the plant extract that drips or flows to the top of the beam to both sides of the beam, so that it can pass smoothly through the circular through hole into the collection funnel.

[0024] This invention also provides a plant extraction filtration method, comprising the following steps:

[0025] Initially, both the annular cover and the filter cartridge are in contact with the bottom plate; the crushed and soaked plant mixture is added into the annular cavity between the annular cover and the filter cartridge;

[0026] The second lifting mechanism drives the squeezing ring to move downward, squeezing the plant mixture liquid in the annular cavity, so that the plant extract passes through multiple filter holes on the side wall of the filter cylinder and is discharged through the circular through hole in the bottom plate.

[0027] The second lifting mechanism drives the extrusion ring to reset upwards; the first lifting mechanism drives the lifting frame to rise, which in turn drives the annular cover, the second lifting mechanism, the third lifting mechanism, the mounting box and the filter cylinder to rise synchronously, so that the annular cover and the filter cylinder are separated from the bottom plate, exposing the annular slag filter cake remaining on the bottom plate.

[0028] Remove the exposed annular filter cake from the bottom plate;

[0029] The first lifting mechanism drives the lifting frame to descend, which in turn drives the annular cover, the second lifting mechanism, the third lifting mechanism, the mounting box, and the filter cartridge to descend synchronously, so that the annular cover and the filter cartridge are in contact with the bottom plate. Then the third lifting mechanism drives the mounting box to rise a short distance, so that the bottom of the filter cartridge separates from the bottom plate. The motor is started to drive the mounting shaft to rotate, which drives the filter cartridge to rotate, and uses centrifugal force to throw out the residue that adheres to and blocks the filter holes on the side wall of the filter cartridge.

[0030] This invention discloses a plant extraction filtration device and method. Initially, both the annular cover and the filter cylinder are in contact with the base plate. An annular cavity is formed between the annular cover and the filter cylinder. The pulverized and soaked plant mixture is added into this annular cavity. A second lifting mechanism drives the extrusion ring to move downwards and extrude the material in the annular cavity. Under pressure, the extract passes through the filter holes on the side wall of the filter cylinder and enters the interior of the filter cylinder. It then flows out and is collected through the circular through-hole on the base plate, while plant debris is trapped in the annular cavity between the outer wall of the filter cylinder and the inner wall of the annular cover. It should be noted that the gap between the bottom end of the filter cylinder and the base plate does not need to be sealed, allowing the extract to pass through while preventing plant debris from passing through.

[0031] After filtration, the squeezing ring moves upward and resets. The first lifting mechanism drives the lifting frame to rise, simultaneously raising the annular cover and the second and third lifting mechanisms, the mounting box, and the filter cylinder on the entire lifting frame. This causes the filter cylinder to detach from the bottom plate, exposing the annular filter cake on the bottom plate for cleaning. After cleaning, the first lifting mechanism drives the lifting frame to descend, resetting the annular cover and the filter cylinder to contact the bottom plate. Then, the third lifting mechanism independently drives the mounting box to rise a short distance, causing the bottom end of the filter cylinder to detach from the bottom plate. The motor then starts, driving the mounting shaft to rotate and causing the filter cylinder to rotate at high speed. Centrifugal force is used to throw out the residue adhering to and clogging the filter holes on the sidewall of the filter cylinder. Through the independent lifting and rotating of the filter cylinder, online cleaning of the filter holes is achieved, eliminating the need to disassemble and clean the filter cylinder, avoiding mechanical damage to the filter screen caused by frequent disassembly and assembly, and significantly reducing equipment downtime. This solves the technical problem of time-consuming and labor-intensive filter screen cleaning in existing plant extraction filtration devices. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0033] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention.

[0034] Figure 2 This is a front view of the first embodiment of the present invention.

[0035] Figure 3 This is a cross-sectional view of the first embodiment of the present invention.

[0036] Figure 4 yes Figure 3 A magnified view of detail A.

[0037] Figure 5 yes Figure 3 A magnified view of detail B.

[0038] Figure 6 This is another cross-sectional view of the first embodiment of the present invention.

[0039] Figure 7 yes Figure 6 A magnified view of detail C.

[0040] Figure 8 This is a flowchart illustrating the second embodiment of the present invention.

[0041] 1-Base plate, 2-Support leg, 3-Annular cover, 4-Lifting frame, 5-First lifting mechanism, 6-Second lifting mechanism, 7-Squeezing ring, 8-Third lifting mechanism, 9-Mounting box, 10-Mounting shaft, 11-Motor, 12-Mounting plate, 13-Filter cartridge, 14-Liquid collecting funnel, 15-Annular sealing ring, 16-Support rod, 17-Crossbeam, 101-Circular through hole, 102-Annular groove, 501-U-shaped frame, 502-Slider, 503-First hydraulic cylinder, 601-Second hydraulic cylinder, 602-Connecting shaft, 603-Oil collecting baffle sleeve, 701-Liquid guiding cone surface, 801-Guide rod, 802-Mounting plate, 803-Sliding seat, 804-Connecting rod, 805-Third hydraulic cylinder, 1301-Filter hole, 1701-Limiting through hole, 1702-Liquid guiding slope. Detailed Implementation

[0042] The first embodiment of this application is as follows:

[0043] Please see Figures 1-7 ,in, Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention. Figure 2 This is a front view of the first embodiment of the present invention. Figure 3 This is a cross-sectional view of the first embodiment of the present invention. Figure 4 yes Figure 3 A magnified view of detail A. Figure 5 yes Figure 3 A magnified view of detail B. Figure 6 This is another cross-sectional view of the first embodiment of the present invention. Figure 7 yes Figure 6 A magnified view of detail C.

[0044] This invention provides a plant extraction filtration device: comprising a base plate 1, multiple support legs 2, an annular cover 3, a lifting frame 4, a first lifting mechanism 5, a second lifting mechanism 6, a compression ring 7, a third lifting mechanism 8, a mounting box 9, a mounting shaft 10, a motor 11, a mounting plate 12, and a filter cartridge 13; the base plate 1 is provided with a circular through hole 101; the side wall of the filter cartridge 13 is provided with multiple filter holes 1301; the first lifting mechanism 5 includes a U-shaped frame 501, two sliders 502, and two first hydraulic cylinders 503; the second lifting mechanism 6 includes two second hydraulic cylinders 601, two connecting shafts 602, and two oil collecting and baffle sleeves 603; the third lifting mechanism 8 includes... The device comprises two guide rods 801, a mounting plate 802, a sliding seat 803, two connecting rods 804, and a third hydraulic cylinder 805; the top of the extrusion ring 7 is provided with a liquid guiding cone surface 701; the plant extraction filtration device also includes a liquid collecting funnel 14; the plant extraction filtration device also includes an annular sealing ring 15; the top of the base plate 1 is also provided with an annular groove 102; the plant extraction filtration device also includes multiple support rods 16 and a crossbeam 17; the crossbeam 17 is provided with a limiting through hole 1701; the top of the crossbeam 17 is also provided with two liquid guiding inclined surfaces 1702; the aforementioned solution solves the technical problem of time-consuming and labor-intensive filter cleaning in existing plant extraction filtration devices.

[0045] Furthermore, multiple support legs 2 are fixedly installed at the bottom of the base plate 1; the base plate 1 is provided with a circular through hole 101; the annular cover 3 is located at the top of the base plate 1; the lifting frame 4 is fixedly installed at the top of the annular cover 3; the first lifting mechanism 5 is installed at the top of the base plate 1 and is used to drive the lifting frame 4 to rise and fall; the second lifting mechanism 6 is installed on the lifting frame 4, and the compression ring 7 is installed on the second lifting mechanism 6 and is driven to rise and fall by the second lifting mechanism 6; the third lifting mechanism 8 is installed on the lifting frame 4, and the mounting box 9 is installed on the third lifting mechanism 8 and is driven to rise and fall by the compression ring 7. The third lifting mechanism 8 drives the lifting; the mounting shaft 10 is rotatably connected to the mounting box 9 and passes through the mounting box 9; the motor 11 is fixedly installed inside the mounting box 9, and the output end of the motor 11 is fixedly connected to the mounting shaft 10; the mounting plate 12 is fixedly installed on the mounting shaft 10, and the filter cartridge 13 is fixedly installed at the bottom of the mounting plate 12; the side wall of the filter cartridge 13 is provided with a plurality of filter holes 1301; the axes of the circular through hole 101, the annular cover 3, the extrusion ring 7, the mounting shaft 10, the mounting plate 12 and the filter cartridge 13 coincide on the same vertical center line.

[0046] In this embodiment, initially, both the annular cover 3 and the filter cylinder 13 are in contact with the base plate 1. An annular cavity is formed between the annular cover 3 and the filter cylinder 13. The pulverized and soaked plant mixture is added into this annular cavity. The second lifting mechanism 6 drives the extrusion ring 7 to move downward to extrude the material in the annular cavity. Under pressure, the extract passes through the filter holes 1301 on the side wall of the filter cylinder 13 and enters the interior of the filter cylinder 13. It then flows out and is collected through the circular through hole 101 on the base plate 1, while the plant debris is trapped in the annular cavity between the outer wall of the filter cylinder 13 and the inner wall of the annular cover 3. It should be noted that the gap between the bottom end of the filter cylinder 13 and the base plate 1 does not need to be sealed, allowing the extract to pass through while preventing the plant debris from passing through.

[0047] After filtration, the compression ring 7 moves upward and resets. The first lifting mechanism 5 drives the lifting frame 4 to rise, which in turn drives the annular cover 3 and the second lifting mechanism 6, the third lifting mechanism 8, the mounting box 9, and the filter cylinder 13 on the entire lifting frame 4 to rise synchronously, so that the filter cylinder 13 is separated from the bottom plate 1, exposing the annular filter cake on the bottom plate 1 for cleaning. After cleaning, the first lifting mechanism 5 drives the lifting frame 4 to fall, so that the annular cover 3 and the filter cylinder 13 are reset to contact the bottom plate 1. Then, the third lifting mechanism 8 drives the mounting box 9 to rise a short distance, so that the bottom end of the filter cylinder 13 is separated from the bottom plate 1. The motor 11 is started to drive the mounting shaft 10 to rotate and drive the filter cylinder 13 to rotate at high speed. Centrifugal force is used to throw out the residue adhering to and clogging the filter holes 1301 on the side wall of the filter cylinder 13. By independently lifting and rotating the filter cylinder 13 to remove slag, the filter holes 1301 can be cleaned online without having to remove the filter cylinder 13 for cleaning. This avoids mechanical damage to the filter screen caused by frequent disassembly and assembly, and significantly reduces equipment downtime. This solves the technical problem of time-consuming and laborious filter screen cleaning in existing plant extraction filtration devices.

[0048] Furthermore, the U-shaped frame 501 is fixedly installed on the top of the base plate 1; the two sliders 502 are slidably installed inside the U-shaped frame 501 and are fixedly connected to the lifting frame 4; the two first hydraulic cylinders 503 are fixedly installed inside the U-shaped frame 501, and the output ends of the two first hydraulic cylinders 503 are respectively fixedly connected to the two sliders 502.

[0049] In this embodiment, the output ends of the two first hydraulic cylinders 503 extend or retract synchronously, pushing the two sliders 502 fixedly connected to them to slide vertically up and down within the U-shaped frame 501. Since the two sliders 502 are fixedly connected to the lifting frame 4, the lifting frame 4 rises and falls synchronously with the sliders 502. This ensures that the lifting frame 4 experiences uniform force and runs smoothly during the lifting process, preventing the annular cover 3 from tilting or jamming due to unilateral drive, thereby ensuring that the bottom end of the annular cover 3 can form a uniform and reliable sealing contact with the base plate 1.

[0050] Furthermore, two second hydraulic cylinders 601 are fixedly mounted on the lifting frame 4; two connecting shafts 602 are fixedly mounted on the top of the extrusion ring 7 and are respectively fixedly connected to the output ends of the two second hydraulic cylinders 601; two oil collecting sleeves 603 are respectively fixedly mounted on the connecting shafts 602 for collecting the oil dripping from the second hydraulic cylinders 601 and preventing the extract below from splashing upwards along the connecting shafts 602.

[0051] In this embodiment, the output ends of the two second hydraulic cylinders 601 extend or retract synchronously, driving the extrusion ring 7 to rise and fall vertically via the two connecting shafts 602. When the extrusion ring 7 descends, it enters the annular cavity between the annular cover 3 and the filter cartridge 13 and applies extrusion pressure to the material; when the extrusion ring 7 rises, it disengages from the annular cavity, freeing up space for subsequent slag discharge and filter cartridge 13 regeneration. The oil collecting and liquid blocking sleeves 603 fixedly installed on the two connecting shafts 602 play a dual protective role during the operation of the second hydraulic cylinder 601: above, they collect and receive lubricating oil that may drip from the piston rod surface of the second hydraulic cylinder 601, preventing oil from falling into the plant extract below; below, they block the extract splashed during the extrusion process from flowing upward along the connecting shafts 602, preventing the extract from contaminating the piston rod and seals of the second hydraulic cylinder 601, ensuring the cleanliness of the extraction process and the reliable operation of the second hydraulic cylinder 601.

[0052] Furthermore, the two guide rods 801 are fixedly mounted on the top of the lifting frame 4; the mounting plate 802 is fixedly mounted on the top of the two guide rods 801; the sliding seat 803 is slidably mounted on the two guide rods 801 and is penetrated by the two guide rods 801; the top ends of the two connecting rods 804 are fixedly connected to the sliding seat 803, the bottom ends of the two connecting rods 804 are fixedly connected to the mounting box 9, and the two connecting rods 804 are also slidably connected to the lifting frame 4 and penetrate the lifting frame 4; the third hydraulic cylinder 805 is fixedly mounted on the top of the mounting plate 802, and the output end of the third hydraulic cylinder 805 is fixedly connected to the sliding seat 803.

[0053] In this embodiment, the output end of the third hydraulic cylinder 805 extends or retracts, driving the sliding seat 803 to slide vertically up and down along the two guide rods 801. The sliding seat 803 drives the mounting box 9 to rise and fall synchronously via the two connecting rods 804. The mounting box 9, in turn, drives the mounting shaft 10, the mounting plate 12, and the filter cartridge 13 to rise and fall. The two guide rods 801 guide and straighten the sliding seat 803, ensuring smooth rising and falling of the sliding seat 803. The symmetrical arrangement of the two connecting rods 804 ensures that the mounting box 9 is subjected to uniform force. Since the two connecting rods 804 pass through the lifting frame 4 and are slidably connected to the lifting frame 4, the lifting and lowering movements of the mounting box 9 and the filter cylinder 13 are independent of the lifting frame 4. That is, the filter cylinder 13 can be independently raised and lowered relative to the annular cover 3 while the lifting frame 4 remains stationary. This allows the filter cylinder 13 to move up a small distance and rotate to throw slag while the annular cover 3 is in contact and sealed with the bottom plate 1. This ensures that the annular cover 3 still maintains its enclosure effect on the annular cavity during the slag throwing process, preventing the thrown slag from splashing to the outside of the equipment.

[0054] Furthermore, the liquid-guiding cone surface 701 is used to guide the plant extract that seeps out above the extrusion ring 7 during the extrusion process toward the central filter cartridge 13.

[0055] In this embodiment, when the extrusion ring 7 extrudes the material within the cavity of the ring 7 downwards, some of the extract may splash or seep upwards along the outer wall of the filter cartridge 13 or the inner wall of the annular cover 3 under high pressure, reaching above the extrusion ring 7. Since the top of the extrusion ring 7 is provided with a liquid-guiding cone surface 701, which is an inclined surface that gradually decreases from the outside to the inside, the extract splashed onto the top of the extrusion ring 7 automatically flows towards the center of the filter cartridge 13 under gravity, and finally passes through the filter holes 1301 on the side wall of the filter cartridge 13 and enters the interior of the filter cartridge 13. The liquid-guiding cone surface 701 effectively prevents the extract from accumulating at the top of the extrusion ring 7, preventing cross-contamination of materials caused by liquid stagnation, and simultaneously improving the collection rate of the extract.

[0056] Furthermore, the liquid collecting funnel 14 is fixedly disposed at the bottom of the base plate 1 and communicates with the circular through hole 101.

[0057] In this embodiment, during the pressing process, the plant extract that enters the interior of the filter cylinder 13 through the filter hole 1301 on the side wall of the filter cylinder 13 flows downward along the interior of the filter cylinder 13 under the action of gravity, flows out of the bottom of the bottom plate 1 through the circular through hole 101 on the bottom plate 1, and is received by the liquid collection funnel 14 which is fixedly set at the bottom of the bottom plate 1 and communicates with the circular through hole 101. The conical inner wall of the liquid collection funnel 14 gathers the collected extract towards the constricted end at the bottom, and then leads it to an external collection container through the drain pipe connected to the constricted end.

[0058] Furthermore, the top of the base plate 1 is provided with an annular groove 102; the annular sealing ring 15 is disposed in the annular groove 102 to seal the gap between the bottom end of the annular cover 3 and the base plate 1.

[0059] In this embodiment, when the first lifting mechanism 5 drives the lifting frame 4 to descend, the lifting frame 4 drives the annular cover 3 to descend synchronously until the bottom end of the annular cover 3 presses against the top of the base plate 1. Since the top of the base plate 1 is provided with the annular groove 102, and the annular sealing ring 15 is built into the annular groove 102, the bottom end of the annular cover 3, under the pressing state, squeezes the annular sealing ring 15, causing the annular sealing ring 15 to undergo elastic deformation, thereby completely sealing the annular gap between the bottom end of the annular cover 3 and the base plate 1. This sealing structure ensures that during the pressing process, the extract in the annular cavity will not leak to the outside from the contact surface between the annular cover 3 and the base plate 1.

[0060] Furthermore, one end of each of the plurality of support rods 16 is fixedly connected to the mounting shaft 10, and the other end is fixedly connected to the filter cylinder 13 and located inside the filter cylinder 13; the crossbeam 17 is fixedly disposed in the circular through hole 101 and is provided with a limiting through hole 1701; the bottom end of the mounting shaft 10 passes through the limiting through hole 1701; the limiting through hole 1701 is used to constrain the radial displacement of its bottom end when the mounting shaft 10 rotates.

[0061] In this embodiment, multiple support rods 16 are located inside the filter cartridge 13, fixing the mounting shaft 10 and the filter cartridge 13 together. The mounting shaft 10 drives the filter cartridge 13 to rotate synchronously through the support rods 16. The crossbeam 17 is fixedly disposed in the circular through hole 101 on the base plate 1, and the limiting through hole 1701 disposed at the center of the crossbeam 17 passes through and is sleeved on the outside of the bottom end of the mounting shaft 10. When the motor 11 drives the mounting shaft 10 to rotate, the bottom end of the mounting shaft 10 rotates within the limiting through hole 1701. The inner wall of the limiting through hole 1701 forms a radial constraint on the bottom end of the mounting shaft 10, effectively preventing the bottom end of the mounting shaft 10 from swaying due to centrifugal force or material off-center loading during high-speed rotation. This structure, together with the rotational connection at the mounting box 9, forms a double-support point, significantly improving the stability and concentricity of the mounting shaft 10 and the filter cartridge 13 during rotation. It should be noted that multiple support rods 16 are circumferentially arranged at equal intervals from top to bottom on the mounting shaft 10 to support the filter cartridge 13.

[0062] Furthermore, the two liquid-guiding slopes 1702 are used to guide the plant extract that drips or flows to the top of the crossbeam 17 to both sides of the crossbeam 17, so that it can pass smoothly through the circular through hole 101 and enter the liquid-collecting funnel 14.

[0063] In this embodiment, the plant extract entering the filter cartridge 13 through the filter holes 1301 on the side wall of the filter cartridge 13 flows downward along the interior of the filter cartridge 13, with some liquid dripping or flowing to the top of the crossbeam 17. Since the top of the crossbeam 17 is provided with two liquid-guiding inclined surfaces 1702, which are inclined surfaces that gradually decrease from the center of the top surface of the crossbeam 17 to both sides, the extract dripping to the top of the crossbeam 17 is guided by gravity along the two liquid-guiding inclined surfaces 1702 to both sides of the crossbeam 17. After bypassing the crossbeam 17 body, it passes through the circular through holes 101 in the channels on both sides of the crossbeam 17 and enters the collection funnel 14 fixedly installed at the bottom of the base plate 1. The two inclined surfaces 1702 effectively prevent the extract from accumulating on the top of the crossbeam 17 and forming a liquid film, preventing liquid stagnation from hindering subsequent liquid flow and ensuring that the extract can smoothly and completely pass through the circular through hole 101 into the collection funnel 14, thereby improving the collection efficiency.

[0064] In this embodiment, a plant extraction and filtration device is used such that, initially, both the annular cover 3 and the filter cylinder 13 are in contact with the base plate 1, forming an annular cavity between them. The bottom end of the mounting shaft 10 penetrates the limiting through hole 1701 of the crossbeam 17. The crushed and soaked plant mixture is added to the annular cavity. The second lifting mechanism 6 drives the squeezing ring 7 to move downwards and squeeze the material. The extract passes through the filter holes 1301 on the side wall of the filter cylinder 13 and enters the interior of the filter cylinder 13. It is then discharged and collected through the collection funnel 14 via the circular through hole 101. The plant residue is trapped in the annular cavity and pressed into an annular filter cake. After pressing, the second lifting mechanism 6 drives the squeezing ring 7 to move upwards and reset. The first lifting mechanism 5 drives the lifting frame 4 to rise, causing the annular cover 3 and the filter cylinder 13 to move upwards synchronously, so that the bottom end of the mounting shaft 10 exits through the limiting through hole 1701. The filter cylinder 13 is removed from the bottom plate 1, exposing the annular filter cake. The filter cake is then removed. After cleaning, the first lifting mechanism 5 drives the lifting frame 4 to descend, causing the annular cover 3 and the filter cylinder 13 to move down and reset to contact the bottom plate 1. The bottom end of the mounting shaft 10 is reinserted into the limiting through hole 1701. The third lifting mechanism 8 drives the filter cylinder 13 to move up a small distance so that its bottom end is removed from the bottom plate 1, but the bottom end of the mounting shaft 10 is still inside the limiting through hole 1701. The motor 11 is started to drive the filter cylinder 13 to rotate, using centrifugal force to throw out the residue that adheres to and blocks the filter hole 1301.

[0065] The second embodiment of this application is as follows:

[0066] Based on the first embodiment, please refer to Figure 8 ,in, Figure 8 This is a flowchart illustrating the second embodiment of the present invention.

[0067] The present invention provides a plant extraction filtration method, comprising the following steps:

[0068] S1: Initially, both the annular cover 3 and the filter cylinder 13 are in contact with the bottom plate 1; the crushed and soaked plant mixture liquid is added into the annular cavity between the annular cover 3 and the filter cylinder 13;

[0069] S2: The second lifting mechanism 6 drives the squeezing ring 7 to move downward, squeezing the plant mixture liquid in the cavity of the squeezing ring 7, so that the plant extract liquid passes through multiple filter holes 1301 on the side wall of the filter cylinder 13, and is discharged through the circular through hole 101 of the bottom plate 1.

[0070] S3: The second lifting mechanism 6 drives the extrusion ring 7 to reset upward; the first lifting mechanism 5 drives the lifting frame 4 to rise, which in turn drives the annular cover 3, the second lifting mechanism 6, the third lifting mechanism 8, the mounting box 9 and the filter cylinder 13 to rise synchronously, so that the annular cover 3 and the filter cylinder 13 are separated from the bottom plate 1, exposing the annular filter cake remaining on the bottom plate 1.

[0071] S4: Remove the exposed annular filter cake on the bottom plate 1;

[0072] S5: The first lifting mechanism 5 drives the lifting frame 4 to descend, which in turn drives the annular cover 3, the second lifting mechanism 6, the third lifting mechanism 8, the mounting box 9, and the filter cylinder 13 to descend synchronously, so that the annular cover 3 and the filter cylinder 13 are in contact with the bottom plate 1; then the third lifting mechanism 8 drives the mounting box 9 to rise a short distance, so that the bottom end of the filter cylinder 13 is separated from the bottom plate 1; the motor 11 is started to drive the mounting shaft 10 to rotate, which drives the filter cylinder 13 to rotate, and uses centrifugal force to throw out the residue that adheres to and blocks the filter holes 1301 on the side wall of the filter cylinder 13.

[0073] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A plant extraction filtration device, characterized in that, It includes a base plate, multiple support legs, a ring cover, a lifting frame, a first lifting mechanism, a second lifting mechanism, a compression ring, a third lifting mechanism, a mounting box, a mounting shaft, a motor, a mounting plate, and a filter cartridge; Multiple support legs are fixedly mounted on the bottom of the base plate; the base plate is provided with circular through holes; The annular cover is located on the top of the base plate; the lifting frame is fixedly installed on the top of the annular cover; the first lifting mechanism is installed on the top of the base plate and is used to drive the lifting frame to rise and fall; the second lifting mechanism is installed on the lifting frame, and the extrusion ring is installed on the second lifting mechanism and is driven to rise and fall by the second lifting mechanism; the third lifting mechanism is installed on the lifting frame, and the mounting box is installed on the third lifting mechanism and is driven to rise and fall by the third lifting mechanism; the mounting shaft is rotatably connected to the mounting box and passes through the mounting box; the motor is fixedly installed inside the mounting box, and the output end of the motor is fixedly connected to the mounting shaft; the mounting plate is fixedly installed on the mounting shaft, and the filter cartridge is fixedly installed at the bottom of the mounting plate; the side wall of the filter cartridge is provided with multiple filter holes; the axes of the circular through hole, the annular cover, the extrusion ring, the mounting shaft, the mounting plate, and the filter cartridge coincide on the same vertical center line.

2. The plant extraction filtration device as described in claim 1, characterized in that, The first lifting mechanism includes a U-shaped frame, two sliders, and two first hydraulic cylinders; The U-shaped frame is fixedly installed on the top of the base plate; the two sliders are slidably installed inside the U-shaped frame and fixedly connected to the lifting frame; the two first hydraulic cylinders are fixedly installed inside the U-shaped frame, and the output ends of the two first hydraulic cylinders are respectively fixedly connected to the two sliders.

3. The plant extraction filtration device as described in claim 2, characterized in that, The second lifting mechanism includes two second hydraulic cylinders, two connecting shafts, and two oil collection baffles; Two second hydraulic cylinders are fixedly mounted on the lifting frame; two connecting shafts are fixedly mounted on the top of the extrusion ring and respectively fixedly connected to the output ends of the two second hydraulic cylinders; two oil collecting sleeves are respectively fixedly mounted on the connecting shafts to collect the oil dripping from the second hydraulic cylinders and to prevent the extract below from splashing upwards along the connecting shafts.

4. The plant extraction filtration device as described in claim 3, characterized in that, The third lifting mechanism includes two guide rods, a mounting plate, a sliding seat, two connecting rods, and a third hydraulic cylinder; Two guide rods are fixedly mounted on the top of the lifting frame; the mounting plate is fixedly mounted on the top of the two guide rods; the sliding seat is slidably mounted on the two guide rods and is penetrated by the two guide rods; the top ends of the two connecting rods are fixedly connected to the sliding seat, the bottom ends of the two connecting rods are fixedly connected to the mounting box, and the two connecting rods are also slidably connected to the lifting frame and penetrate the lifting frame; the third hydraulic cylinder is fixedly mounted on the top of the mounting plate, and the output end of the third hydraulic cylinder is fixedly connected to the sliding seat.

5. The plant extraction filtration device as described in claim 4, characterized in that, The top of the extrusion ring is provided with a liquid-guiding cone surface; The liquid-guiding cone is used to guide the plant extract that seeps out above the extrusion ring during the extrusion process toward the central filter cartridge.

6. The plant extraction filtration device as described in claim 5, characterized in that, The plant extraction and filtration device also includes a liquid collection funnel; The liquid collecting funnel is fixedly installed at the bottom of the base plate and communicates with the circular through hole.

7. The plant extraction filtration device as described in claim 6, characterized in that, The plant extraction and filtration device also includes an annular sealing ring; The top of the base plate is also provided with an annular groove; the annular sealing ring is disposed in the annular groove and is used to seal the gap between the bottom end of the annular cover and the base plate.

8. The plant extraction filtration device as described in claim 7, characterized in that, The plant extraction and filtration device also includes multiple support rods and crossbeams; One end of each of the multiple support rods is fixedly connected to the mounting shaft, and the other end is fixedly connected to the filter cylinder and located inside the filter cylinder; the crossbeam is fixedly disposed in the circular through hole and is provided with a limiting through hole; the bottom end of the mounting shaft passes through the limiting through hole; the limiting through hole is used to constrain the radial displacement of its bottom end when the mounting shaft rotates.

9. The plant extraction filtration device as described in claim 8, characterized in that, The top of the crossbeam is also provided with two liquid guiding slopes; The two inclined surfaces are used to guide the plant extract that drips or flows to the top of the beam to both sides of the beam, so that it can pass smoothly through the circular through hole into the collection funnel.

10. A plant extraction filtration method, applied to the plant extraction filtration apparatus as described in any one of claims 1 to 9; characterized in that, Includes the following steps: Initially, both the annular cover and the filter cartridge are in contact with the bottom plate; the crushed and soaked plant mixture is added into the annular cavity between the annular cover and the filter cartridge; The second lifting mechanism drives the squeezing ring to move downward, squeezing the plant mixture liquid in the annular cavity, so that the plant extract passes through multiple filter holes on the side wall of the filter cylinder and is discharged through the circular through hole in the bottom plate. The second lifting mechanism drives the extrusion ring to reset upwards; the first lifting mechanism drives the lifting frame to rise, which in turn drives the annular cover, the second lifting mechanism, the third lifting mechanism, the mounting box and the filter cylinder to rise synchronously, so that the annular cover and the filter cylinder are separated from the bottom plate, exposing the annular slag filter cake remaining on the bottom plate. Remove the exposed annular filter cake from the bottom plate; The first lifting mechanism drives the lifting frame to descend, which in turn drives the annular cover, the second lifting mechanism, the third lifting mechanism, the mounting box, and the filter cartridge to descend synchronously, so that the annular cover and the filter cartridge are in contact with the bottom plate. Then the third lifting mechanism drives the mounting box to rise a short distance, so that the bottom of the filter cartridge separates from the bottom plate. The motor is started to drive the mounting shaft to rotate, which drives the filter cartridge to rotate, and uses centrifugal force to throw out the residue that adheres to and blocks the filter holes on the side wall of the filter cartridge.

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