A filtering device for processing jasmine absolute and a filtering method thereof

Abstract

The application belongs to the technical field of jasmine processing, and particularly relates to a filtering device for processing jasmine absolute and a filtering method thereof, which comprises an upper cavity and a lower cavity, oil inlets and outlets are respectively arranged on the upper cavity and the lower cavity, the upper cavity and the lower cavity are connected through an arc-shaped connecting plate, a filtering mechanism is rotatably connected between the side walls of the upper cavity and the lower cavity, a lifting limiting mechanism is threadedly connected to the filtering mechanism, the lifting limiting mechanism is slidingly connected to the side wall of the upper cavity, and one end of the lifting limiting mechanism extends to the inner side of the upper cavity. When the filtering mechanism rotates, the lifting limiting mechanism is in an upward-moving or downward-pressing state. The filtering device is provided with a spin-out filtering mechanism, so that the filtering screen can be spun out of the machine body for replacement and cleaning without disassembling the cavity. In combination with the threaded linkage pressing plate limiting structure and the controllable sealing blocking mechanism, the filtering device solves the problems of traditional equipment, such as complicated disassembly and assembly, easy oil seepage, and oil pressure deviation of the filtering screen, and is suitable for continuous refining and processing of jasmine absolute.

Description

Technical Field

[0001] This invention belongs to the field of jasmine processing technology, specifically relating to a filtration device and method for purifying jasmine oil. Background Technology

[0002] Jasmine absolute is an important natural aromatic raw material in the fragrance processing industry. It is mostly produced by solvent extraction. The crude absolute after extraction contains solid impurities such as petal fragments, plant fibers, gum particles, and small flower residue. The retention of impurities will damage the purity of the absolute and affect the aroma quality of the product and subsequent deep processing. Therefore, filtration and purification are indispensable processes in the production of jasmine absolute. The rationality of the structure of the filtration device directly determines the quality of the finished absolute and the production efficiency.

[0003] Currently, jasmine oil purification processes commonly use fixed, built-in filter equipment. The filter is fixedly installed inside the filter chamber, and the coarse purified oil enters from the top of the chamber, passes through the filter to trap impurities, and is discharged from the bottom. This traditional filtration device has revealed numerous drawbacks in long-term industrial production. First, plant residues and flocculent colloids in the purified oil easily and quickly adhere to and accumulate on the filter surface, causing rapid clogging of the mesh and a significant decrease in oil flow rate, requiring frequent shutdowns for filter cleaning. Furthermore, the filter is embedded within a sealed chamber, resulting in limited space for disassembly and assembly. Disassembly requires dismantling the entire filter chamber, removing bolts, and separating the upper and lower housings, a cumbersome process. Each filter replacement and cleaning is time-consuming, and frequent shutdowns for maintenance severely disrupt continuous oil purification production lines, reducing overall processing capacity.

[0004] Secondly, most existing filters rely solely on simple locking mechanisms with slots for fixation. The continuous fluid impact from the flowing oil causes the filters to shift and warp over time, allowing oil to seep through the gaps between the filter and the chamber. Some fine impurities can then penetrate the filtration process with the bypass oil, resulting in incomplete filtration, excessive impurities in the finished product, and increased costs for subsequent secondary filtration. While some equipment incorporates a clamping structure, this component is also located inside the chamber, making it difficult to quickly release the clamping mechanism during filter removal and installation, further complicating the process.

[0005] In addition, while some pull-out filter screens on the market can be removed, the pulling stroke occupies a large amount of external space, making them unsuitable for compact workshop layouts. Furthermore, the pulling process can easily cause the filter screen to be bumped and damaged. With the large-scale development of the jasmine deep processing industry, manufacturers are increasingly demanding higher oil purification filtration efficiency, easier filter screen maintenance, and better raw material utilization. Traditional filtration equipment is struggling to meet the needs of modern continuous processing. The industry urgently needs a dedicated jasmine oil purification filtration device that facilitates filter screen disassembly and cleaning, allows for quick switching between working and maintenance positions, and provides excellent sealing and leak-proof performance.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0007] This invention provides a filtration device and method for purifying jasmine oil, aiming to solve the technical problems mentioned in the background section.

[0008] To achieve the above objectives, the technical solution of the present invention is as follows:

[0009] A filtration device for purifying jasmine oil includes an upper chamber and a lower chamber, wherein an oil inlet and an oil outlet are respectively provided on the upper chamber and the lower chamber.

[0010] The upper cavity and the lower cavity are connected by an arc-shaped connecting plate, and a filter mechanism is rotatably connected between the side walls of the upper cavity and the lower cavity. A lifting limit mechanism is threadedly connected to the filter mechanism. The lifting limit mechanism is slidably connected inside the side wall of the upper cavity, and one end of it extends to the inside of the upper cavity. When the filter mechanism rotates, the lifting limit mechanism is in an upward or downward state.

[0011] Preferably, the filtration mechanism includes a rotating ring, a threaded rod, a rotating column, and a filter screen.

[0012] The upper and lower end faces of one end of the rotating ring are respectively vertically provided with the threaded rod and the rotating column. The side walls of the upper cavity and the lower cavity are respectively provided with rotation intervals for accommodating the threaded rod and the rotating column. The lifting and limiting mechanism is built into the rotation interval and is threadedly connected to the threaded rod.

[0013] The filter element is embedded in the rotating ring.

[0014] Preferably, the lifting and limiting mechanism includes a lifting nut, a guide plate, and an L-shaped pressure plate. The lifting nut is threadedly connected to the threaded rod, and the guide plate is provided on both sides of the lifting nut.

[0015] Both sides of the rotation range are provided with sliding grooves, and the inner sliding groove is connected to the upper cavity. The lifting nut is slidably connected to the sliding groove through the guide plate within the rotation range. One end of the L-shaped pressure plate is connected to the guide plate, and the other end passes through the inner sliding groove and abuts against the filter screen.

[0016] Preferably, the rotating ring is recessed with a placement groove, and a positioning post is provided at the end of the placement groove away from the threaded rod. The filter screen is embedded in the placement groove and inserted into the positioning post.

[0017] Preferably, the outer edge of the rotating ring is provided with an arc-shaped groove that matches the arc-shaped connecting plate, and a rotating handrail is provided on the outer edge of the rotating ring on the side away from the arc-shaped groove.

[0018] Preferably, the present invention further includes a sealing mechanism, which is respectively disposed on the upper cavity and the lower cavity and is arranged symmetrically in the upper and lower parts.

[0019] Preferably, the sealing mechanism includes a cylinder and a retaining ring. The cylinder 1 is disposed on the upper cavity or the lower cavity, and its telescopic end is connected to the retaining ring. The retaining ring is sleeved on the upper cavity or the lower cavity.

[0020] Preferably, the inner diameter of the retaining ring is provided with an oil retaining ring.

[0021] A filtration method based on a filtration device for jasmine oil purification includes the following steps:

[0022] S1, Filter Pre-assembly Station

[0023] The cylinder controlling the sealing mechanism retracts, causing the retaining ring and oil retaining ring to retract and disengage from the rotating ring, thus releasing the outer ring limit of the rotating ring; hold the rotating handle and rotate the rotating ring in the opposite direction to rotate the entire filter mechanism out of the upper and lower chambers; insert the filter screen into the placement groove inside the rotating ring, and fit the positioning hole at one end of the filter screen onto the positioning post at the end of the placement groove to complete the unilateral pre-positioning;

[0024] S2, Filter screen locking into place

[0025] Rotating the handle forward causes the rotating ring and filter screen to be screwed into the assembly station between the upper and lower cavities. The outer arc-shaped groove of the rotating ring engages with the arc-shaped connecting plate. The rotation of the rotating ring synchronously drives the upper threaded rod and the lower rotating column to rotate within their respective rotation ranges. The threaded rod engages with the lifting nut to drive the lifting nut to slide down along the slide groove. The L-shaped pressure plate moves down through the guide plate. The lower end of the L-shaped pressure plate presses against the other end of the filter screen away from the positioning column, thus clamping and fixing the two ends of the filter screen together with the positioning column.

[0026] S3, Gap sealing treatment

[0027] The piston rod of the cylinder that controls the upper and lower sealing mechanisms extends, pushing the retaining ring closer to the outer wall of the rotating ring, so that the oil retaining ring of the inner ring of the retaining ring is tightly attached to the assembly gap between the rotating ring and the upper and lower cavities, sealing each assembly gap;

[0028] S4, Oil Filtration Operation

[0029] The crude jasmine oil is introduced into the cavity through the oil inlet of the upper cavity. The oil flows downward through the filter screen, which traps petal fragments, plant fibers and gum impurities. The filtered oil passes through the filter screen and is discharged out through the oil outlet of the lower cavity, thus completing continuous filtration.

[0030] S5. Filter screen removal and cleaning

[0031] When the filter screen is clogged with impurities and requires maintenance, stop the oil supply; retract the cylinder to pull back the retaining ring and oil retaining ring to unlock; rotate the handle in the opposite direction, the rotating ring will rotate out of the cavity, the threaded rod will rotate in the opposite direction to drive the lifting nut to move up, the L-shaped pressure plate will lift and loosen the filter screen, remove the filter screen from the placement slot for cleaning impurities or replace it with a new filter screen. After cleaning or replacement, repeat steps S1-S3 to put it back into filtration production.

[0032] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0033] 1. This invention provides a filtration device and filtration method for jasmine oil purification. The filtration mechanism can be rotated out of the upper and lower cavities as a whole. The replacement and cleaning of the filter screen does not require disassembling the cavity flange and sealing components, eliminating the whole machine disassembly process, greatly shortening downtime maintenance time, and ensuring the continuous operation of the jasmine oil purification production line.

[0034] 2. In this invention, one end of the filter screen is pre-positioned by the positioning post in the placement groove, and the other end is pressed down by the L-shaped pressure plate through the rotating linkage lifting and limiting mechanism of the rotating ring, forming a bidirectional limiting; effectively offsetting the thrust brought by the impact of the clean oil fluid, preventing the filter screen from shifting and warping, eliminating impurities from bypassing and leaking through the assembly gap, and stabilizing the filtration accuracy.

[0035] 3. The sealing mechanism of the present invention uses a cylinder to drive the retaining ring and the oil retaining ring. During the filtration operation, the oil retaining ring fits against the outer wall of the rotating ring to seal the assembly gap and prevent the leakage of clean oil. During maintenance, the cylinder retracts to release the sealing limit and does not interfere with the rotation of the rotating ring to discharge material. It takes into account both sealing performance and ease of disassembly and assembly, and reduces the waste of precious clean oil raw materials. Attached Figure Description

[0036] Figure 1 This is the front view of the present invention;

[0037] Figure 2 for Figure 1 Enlarged view of point A;

[0038] Figure 3 This is a schematic diagram showing the filter mechanism in operation, fitted between the upper and lower chambers.

[0039] Figure 4 This diagram shows the filter mechanism in the state of being cleaned and the filter screen replaced after the upper and lower chambers are rotated out.

[0040] The symbols for the main components in the diagram are explained below:

[0041] 1. Upper cavity; 11. Oil inlet; 12. Oil outlet; 2. Lower cavity; 3. Arc-shaped connecting plate; 4. Filter mechanism; 41. Rotating ring; 411. Placement groove; 412. Arc-shaped groove; 413. Rotating handle; 42. Threaded rod; 43. Rotating column; 44. Filter screen; 5. Lifting limit mechanism; 51. Lifting nut; 52. Guide vane; 53. L-shaped pressure plate; 6. Positioning column; 7. Sealing mechanism; 71. Cylinder; 72. Retaining ring; 721. Oil retaining ring; 100. Rotation range; 110. Slide groove. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Example

[0044] like Figures 1 to 4 As shown, a filtration device for purifying jasmine oil includes an upper cavity 1 and a lower cavity 2. The upper cavity 1 and the lower cavity 2 are respectively provided with an oil inlet 11 and an oil outlet 12. The upper cavity 1 and the lower cavity 2 are connected by an arc-shaped connecting plate 3. A filtration mechanism 4 is rotatably connected between the side walls of the upper cavity 1 and the lower cavity 2. A lifting limit mechanism 5 is threadedly connected to the filtration mechanism 4. The lifting limit mechanism 5 is slidably connected inside the side wall of the upper cavity 1, and one end of it extends to the inside of the upper cavity 1. When the filtration mechanism 4 rotates, the lifting limit mechanism 5 is in an upward or downward state.

[0045] In this example, during production, the oil inlet 11 is connected to the crude purified oil conveying equipment of the preceding extraction section via a pipeline; the oil outlet 12 is connected to a temporary storage tank for finished oil, realizing continuous conveying of crude purified oil inlet and purified oil outlet after filtration; the upper cavity 1 and the lower cavity 2 are fixedly welded together at the middle position by an arc-shaped connecting plate 3, which connects the middle gap between the upper cavity 1 and the lower cavity 2, and cooperates to complete the overall enclosure of the cavity when the filter mechanism 4 is screwed into the assembly position, forming a complete fluid flow channel. A through-type installation notch is opened on the opposite side wall of the upper cavity 1 and the lower cavity 2, and the notch position serves as the rotation installation position of the filter mechanism 4, which can rotate inward and outward along the notch.

[0046] In this embodiment, please refer to Figure 2The filter mechanism 4 includes a rotating ring 311, a threaded rod 42, a rotating column 43, and a filter screen 44. The upper and lower end faces of one end of the rotating ring 311 are respectively provided with a threaded rod 312 and a rotating column 313. The side walls of the upper cavity 1 and the lower cavity 2 are respectively provided with rotation intervals 100 for accommodating the threaded rod 312 and the rotating column 313. The lifting and limiting mechanism 5 is built into the rotation interval 100 and is threadedly connected to the threaded rod 312. The filter screen 44 is embedded in the rotating ring 311.

[0047] The rotating ring 41 has a ring structure. The upper end face of the rotating ring 41 is vertically fixed to the threaded rod 42, and the lower end face is vertically fixed to the rotating column 43. The upper cavity 1 has an upper rotation range 100 that allows the threaded rod 42 to rotate in a circle. The lower cavity 2 has a lower rotation range 100 that is adapted to the rotation of the rotating column 43. The threaded rod 2 and the rotating column 43 are respectively inserted into the upper and lower rotation ranges 100, thereby forming upper and lower point support for the rotating ring 41 and ensuring that the rotating ring 41 can rotate smoothly around the axis of the threaded rod 42 and the rotating column 43.

[0048] In this embodiment, the lifting limit mechanism 5 includes a lifting nut 51, a guide plate 52, and an L-shaped pressure plate 53. The lifting nut 51 is threadedly connected to the threaded rod 312. Guide plates 52 are provided on both sides of the lifting nut 51. Slide grooves 110 are provided on both sides of the rotation range 100. The slide groove 110 located on the inner side is connected to the upper cavity 1. The lifting nut 51 is slidably connected in the rotation range 100 through the guide plate 52 and the slide groove 110. One end of the L-shaped pressure plate 53 is connected to the guide plate 52, and the other end passes through the slide groove 110 located on the inner side and abuts against the filter screen 44.

[0049] The lifting and limiting mechanism 5 is arranged inside the rotation range 100 corresponding to the upper cavity 1. The lifting nut 51 has integrally formed guide slides 52 on both sides. The inner walls of the rotation range 100 are vertically opened with slide grooves 110. The slide grooves 110 are divided into inner and outer layers. The inner slide groove 110 penetrates the cavity wall and connects to the internal space of the upper cavity 1. The lifting nut 51 achieves vertical limiting and sliding by the guide slides 52 on both sides engaging with the slide grooves 110. Driven by the forward and reverse rotation of the threaded rod 42, the lifting nut 51 can make a linear movement of downward pressing or upward loosening along the slide grooves 110. The horizontal end of the L-shaped pressure plate 53 is fixedly connected to the lower end of the guide slide 52. The vertical section of the L-shaped pressure plate 53 extends through the inner connecting slide groove 110 into the interior of the upper cavity 1. Finally, the lower end face of the pressure plate is pressed against the other end face of the filter screen 44 away from the positioning post 6.

[0050] When the filter screen is actually assembled, the rotating ring 41 rotates inward, causing the threaded rod 42 to rotate synchronously. The threaded transmission drives the lifting nut 51 to slide downward along the slide groove 110, which in turn causes the L-shaped pressure plate 53 to move down synchronously to press the filter screen. Together with the positioning post 6 at one end, it forms a clamping and fixing at both ends. When the rotating ring 41 is rotated out in the opposite direction, the threaded rod 42 reverses and causes the lifting nut 51 to rise. The L-shaped pressure plate 53 rises synchronously, releasing the pressing constraint on the filter screen 44.

[0051] Specifically, the rotating ring 41 has a recessed placement groove 411, and a positioning post 6 is provided at the end of the placement groove 411 away from the threaded rod 42. The filter screen 44 is embedded in the placement groove 411 and inserted into the positioning post 6. The filter screen 44 is fully embedded in the placement groove 411. A positioning hole is pre-drilled at one end of the filter screen 44. During assembly, the positioning hole is aligned with the positioning post 6 and the filter screen 44 is pre-limited on one side by relying on the positioning post 6 to prevent the filter screen from moving left and right.

[0052] Please see Figure 3 and Figure 4 The outer edge of the rotating ring 41 is provided with an arc-shaped groove 412 that matches the arc-shaped connecting plate 3. On the side away from the arc-shaped groove 412, a rotating handle 413 is provided on the outer edge of the rotating ring 41. The arc dimension of the arc-shaped groove 412 matches the outer contour arc of the arc-shaped connecting plate 3 one by one. When the rotating ring 41 is screwed into the middle position of the cavity, the arc-shaped groove 412 is just engaged with the outer side of the arc-shaped connecting plate 3, so that the outer edge of the rotating ring 41 fits seamlessly with the arc-shaped connecting plate 3, ensuring that the inner wall of the cavity is smooth without any abrupt steps and avoiding dead corners where clean oil accumulates. The rotating handle 413 is exposed on the outside of the equipment, making it easy for the operator to grip and apply force to drive the rotating ring 41 to rotate in the forward and reverse directions.

[0053] In this embodiment, please refer to the return. Figure 1 and Figure 2 The invention also includes a sealing mechanism 7, which is respectively disposed on the upper cavity 1 and the lower cavity 2, and is arranged symmetrically in the upper and lower parts. Specifically, the sealing mechanism 7 includes a cylinder 71 and a retaining ring 72. The cylinder 71 is disposed on the upper cavity 1 or the lower cavity 2, and its telescopic end is connected to the retaining ring 72. The retaining ring 72 is sleeved on the upper cavity 1 or the lower cavity 2. Specifically, the inner diameter of the retaining ring 72 is provided with an oil retaining ring 721.

[0054] The sealing mechanism 7 is symmetrically installed in two groups on the outer walls of the upper cavity 1 and the lower cavity 2. Each sealing mechanism 7 includes a cylinder 71 and a retaining ring 72. The cylinder body of the cylinder 71 is fixed to the side wall of the cavity. The telescopic rod of the cylinder 71 is arranged towards the rotating ring 41. The end of the telescopic rod is fixedly connected to the annular retaining ring 72. A rubber oil-blocking ring 721 is bonded to the inner ring surface of the retaining ring 72. Before filtration, the piston rod of the cylinder 71 extends and pushes the retaining ring 72 towards the outer wall of the rotating ring 41. The oil-blocking ring 721 tightly covers the joint between the rotating ring 41 and the cavity, sealing the gap and preventing the leakage of clean oil. When the filter screen needs to be removed, the cylinder 71 retracts and pulls the retaining ring 72 away from the rotating ring 41. The oil-blocking ring 721 simultaneously disengages from the sealing position, canceling the restriction on the outer ring of the rotating ring 41 and making room for the rotation of the rotating ring 41.

[0055] A filtration method based on a filtration device for jasmine oil purification includes the following steps:

[0056] S1, Filter Pre-assembly Station

[0057] The cylinder 71 of the control sealing mechanism 7 retracts, driving the retaining ring 72 and the oil retaining ring 721 to retract and disengage from the rotating ring 41, releasing the outer ring limit of the rotating ring 41; the rotating handle 413 is held and the rotating ring 41 is rotated in the opposite direction, rotating the entire filter mechanism 4 out of the outer side of the upper cavity 1 and the lower cavity 2; the filter screen 44 is installed into the placement groove 411 inside the rotating ring 41, and the positioning hole at one end of the filter screen 44 is fitted onto the positioning post 6 at the end of the placement groove 411 to complete the unilateral pre-positioning;

[0058] S2, Filter screen locking into place

[0059] Rotating the handle 413 in the forward direction causes the rotating ring 41 and the filter screen 44 to be screwed into the assembly position between the upper cavity 1 and the lower cavity 2. The outer arc-shaped groove 412 of the rotating ring 41 engages with the arc-shaped connecting plate 3. The rotation of the rotating ring 41 synchronously drives the upper threaded rod 42 and the lower rotating column 43 to rotate within their respective rotation ranges 100. The threaded rod 42 engages with the lifting nut 51 to drive the lifting nut 51 to slide down along the slide groove 110. The L-shaped pressure plate 53 moves down through the guide plate 52. The lower end of the L-shaped pressure plate 53 presses the other end of the filter screen 44 away from the positioning column 6, thus clamping and fixing both ends of the filter screen 44 in conjunction with the positioning column 6.

[0060] S3, Gap sealing treatment

[0061] The piston rod of the cylinder 71 controlling the upper and lower sealing mechanism 7 extends, pushing the retaining ring 72 to move closer to the outer wall of the rotating ring 41, so that the oil retaining ring 721 of the inner ring of the retaining ring 72 is tightly attached to the assembly gap between the rotating ring 41 and the upper cavity 1 and the lower cavity 2, sealing each assembly gap.

[0062] S4, Oil Filtration Operation

[0063] The crude jasmine oil is introduced into the cavity through the oil inlet 11 of the upper cavity 1. The oil flows downward through the filter screen 44, which traps petal fragments, plant fibers and gum impurities. The filtered finished oil passes through the filter screen 44 and is discharged out through the oil outlet 12 of the lower cavity 2, thus completing continuous filtration.

[0064] S5. Filter screen removal and cleaning

[0065] When the filter screen 44 is clogged with impurities and requires maintenance, stop the oil supply; the cylinder 71 retracts, pulling the retaining ring 72 and the oil retaining ring 721 back to unlock; rotate the handle 413 in the opposite direction, the rotating ring 41 rotates out of the cavity, the threaded rod 42 rotates in the opposite direction, driving the lifting nut 51 to move upward, the L-shaped pressure plate 53 lifts and loosens the filter screen 44, and remove the filter screen 44 from the placement slot 411 for impurity cleaning or replacement with a new filter screen. After cleaning and replacement, repeat steps S1-S3 to put it back into filtration production.

[0066] The above description is a detailed description of the preferred embodiments of the present invention. However, the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modifications made under the technical spirit of the present invention should fall within the patent scope covered by the present invention.

Claims

1. A filtration device for purifying jasmine oil, comprising an upper chamber (1) and a lower chamber (2), wherein the upper chamber (1) and the lower chamber (2) are respectively provided with an oil inlet (11) and an oil outlet (12), characterized in that, The upper cavity (1) and the lower cavity (2) are connected by an arc-shaped connecting plate (3), and a filter mechanism (4) is rotatably connected between the side walls of the upper cavity (1) and the lower cavity (2). A lifting limit mechanism (5) is threadedly connected to the filter mechanism (4). The lifting limit mechanism (5) is slidably connected inside the side wall of the upper cavity (1), and one end of it extends to the inside of the upper cavity (1). When the filter mechanism (4) rotates, the lifting limit mechanism (5) is in an upward or downward state.

2. The filtration device for jasmine flower oil purification as described in claim 1, characterized in that, The filtering mechanism (4) includes a rotating ring (41), a threaded rod (42), a rotating column (43), and a filter screen (44). The upper and lower end faces of one end of the rotating ring (41) are respectively vertically provided with the threaded rod (42) and the rotating column (43). The side walls of the upper cavity (1) and the lower cavity (2) are respectively provided with a rotation range (100) for accommodating the threaded rod (42) and the rotating column (43). The lifting and limiting mechanism (5) is built into the rotation range (100) and threadedly connected to the threaded rod (42). The filter screen (44) is embedded in the rotating ring (41).

3. The filtration device for jasmine flower oil purification as described in claim 2, characterized in that, The lifting and limiting mechanism (5) includes a lifting nut (51), a guide plate (52), and an L-shaped pressure plate. The lifting nut (51) is threadedly connected to the threaded rod (42). The guide plate (52) is provided on both sides of the lifting nut (51). The sliding groove (110) is provided on both sides of the rotation interval (100). The sliding groove (110) located on the inner side is connected to the upper cavity (1). The lifting nut (51) is slidably connected in the rotation interval (100) through the guide plate (52) and the sliding groove (110). One end of the L-shaped pressure plate is connected to the guide plate (52), and the other end passes through the sliding groove (110) located on the inner side and abuts against the filter screen (44).

4. The filtration device for jasmine flower oil purification as described in claim 2, characterized in that, The rotating ring (41) has a recessed placement groove (411), and a positioning post (6) is provided at one end of the placement groove (411) away from the threaded rod (42). The filter screen (44) is embedded in the placement groove (411) and inserted into the positioning post (6).

5. A filtration device for jasmine oil purification as described in claim 2, characterized in that, The outer edge of the rotating ring (41) is provided with an arc-shaped groove (412) that matches the arc-shaped connecting plate (3), and a rotating handle (413) is provided on the outer edge of the rotating ring (41) on the side away from the arc-shaped groove (412).

6. The filtration device for jasmine oil purification as described in claim 1, characterized in that, It also includes a sealing mechanism (7), which is respectively provided on the upper cavity (1) and the lower cavity (2) and is arranged symmetrically in the upper and lower parts.

7. The filtration device for jasmine oil purification as described in claim 6, characterized in that, The sealing mechanism (7) includes a cylinder (71) and a retaining ring (72). The cylinder (71) is located on the upper cavity (1) or the lower cavity (2), and its extension end is connected to the retaining ring (72). The retaining ring (72) is sleeved on the upper cavity (1) or the lower cavity (2).

8. The filtration device for jasmine flower oil purification as described in claim 7, characterized in that, The inner diameter of the retaining ring (72) is provided with an oil retaining ring (721).

9. A filtration method based on a filtration device for jasmine oil purification, characterized in that, The filtration apparatus for jasmine oil purification as described in any one of claims 1-8 comprises the following steps: S1, Filter Pre-assembly Station The cylinder (71) of the control sealing mechanism (7) retracts, driving the retaining ring (72) and the oil retaining ring (721) to retract and disengage from the rotating ring (41), releasing the outer ring limit of the rotating ring (41); hold the rotating handle (413) and rotate the rotating ring (41) in the opposite direction, rotating the filter mechanism (4) out of the upper cavity (1) and the lower cavity (2); put the filter screen (44) into the placement groove (411) inside the rotating ring (41), and put the positioning hole at one end of the filter screen (44) onto the positioning post (6) at the end of the placement groove (411) to complete the single-sided pre-positioning; S2, Filter screen locking into place Rotating the handle (413) in the forward direction causes the rotating ring (41) and the filter screen (44) to be screwed into the assembly station between the upper cavity (1) and the lower cavity (2). The outer arc groove (412) of the rotating ring (41) is engaged with the arc connecting plate (3). The rotation of the rotating ring (41) synchronously drives the upper threaded rod (42) and the lower rotating column (43) to rotate in their respective rotation range (100). The threaded rod (42) and the lifting nut (51) are threaded together to drive the lifting nut (51) to slide down along the slide groove (110). The L-shaped pressure plate moves down through the guide plate (52). The lower end of the L-shaped pressure plate presses the filter screen (44) away from the positioning column (6) and works with the positioning column (6) to clamp and fix the two ends of the filter screen (44). S3, Gap sealing treatment The piston rod of the cylinder (71) of the upper and lower sealing mechanism (7) extends and pushes the retaining ring (72) to move closer to the outer wall of the rotating ring (41), so that the oil retaining ring (721) of the inner ring of the retaining ring (72) is tightly attached to the assembly gap between the rotating ring (41) and the upper cavity (1) and the lower cavity (2), sealing each assembly gap; S4, Oil Filtration Operation The crude jasmine oil is introduced into the cavity through the oil inlet (11) of the upper cavity (1). The oil flows downward through the filter screen (44). The filter screen (44) traps petal fragments, plant fibers and gum impurities. The filtered finished oil passes through the filter screen (44) and is discharged outward through the oil outlet (12) of the lower cavity (2), thus completing continuous filtration. S5. Filter screen removal and cleaning When the filter screen is clogged with impurities and requires maintenance, stop the oil supply; the cylinder (71) retracts and pulls the retaining ring (72) and the oil retaining ring (721) back to unlock; rotate the handle (413) in the opposite direction, the rotating ring (41) rotates out of the outside of the cavity, the threaded rod (42) rotates in the opposite direction and drives the lifting nut (51) to move up, the L-shaped pressure plate lifts and loosens the filter screen (44), and the filter screen (44) is taken out from the placement slot (411) for impurity cleaning or replacement with a new filter screen. After cleaning and replacement, repeat steps S1-S3 to put it back into filtration production.

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