Supercritical extraction equipment with supporting structure

Abstract

The utility model relates to supercritical extraction equipment with a supporting structure in the field of essential oil extraction, which comprises a base and an extraction tank, a middle supporting body is mounted above the base and is a telescopic cylinder, and a driving mechanism for driving the upper end of the middle supporting body to rise is further mounted on the base; a plurality of buffer supporting bodies which are uniformly distributed along the circumference of the middle shaft of the middle supporting body are also mounted above the base; a positioning structure is further mounted in the sleeve, by the adoption of the buffering supporting body and the positioning structure, lifting motion of the extraction tank is achieved, meanwhile, the protection effect of buffering descending can be achieved on the extraction tank, and when the second piston rod descends to the lowest position, the position of the second piston rod can be limited; the length of the contracted middle supporting body can be fixed, so that the driving mechanism can conveniently drive the middle supporting body again, the repeated operation precision is high, unstable shaking of the extraction tank can be avoided, and the using effect is better.

Description

Technical Field

[0001] This utility model relates to a supercritical extraction device with a support structure, and particularly to a supercritical extraction device with a support structure applied in the field of essential oil extraction. Background Technology

[0002] Supercritical fluid is an ideal extractant. When the solubility of the substance to be extracted differs greatly between two supercritical fluids, the substance to be extracted is dissolved in one of the supercritical fluids for extraction.

[0003] To address the issue of slow dissolution rates caused by the supercritical fluid remaining stationary when the extraction tank is fixed to the support frame, a certain supercritical extraction device on the market employs a reciprocating vibration design and has a certain market share.

[0004] Chinese utility model patent CN218686530U discloses a supercritical extraction device, including a shell, a partition fixedly installed in the middle of the shell, a motor located on the lower right side of the partition, the motor being fixedly connected to the partition via a fixing block, an incomplete gear located in front of the motor, the output shaft of the motor being fixedly connected to the incomplete gear, and a transmission column located on the left side of the incomplete gear. This supercritical extraction device can assist the extraction tank in extraction, and the vibration of the extraction tank causes the extracted substance to dissolve rapidly, thereby accelerating the extraction efficiency.

[0005] Existing supercritical extraction equipment uses springs for resetting, but repeated deformation can accelerate the damage of the springs, leading to a further shortening of their lifespan and requiring frequent replacement. Furthermore, the spring force makes the positional stability of the extraction tank poor during resetting, making it difficult to ensure a stable fit between the gears and the transmission column. Utility Model Content

[0006] In view of the above-mentioned prior art, the technical problem to be solved by this utility model is how to design a supercritical extraction device with a long continuous use time and a lower maintenance frequency, and improve its stability during use.

[0007] To solve the above problems, this utility model provides a supercritical extraction device with a support structure, including a base and an extraction tank. A central support body is installed above the base. The central support body is a telescopic column. A drive mechanism that drives the upper end of the central support body to rise is also installed on the base.

[0008] Above the base, there are also multiple buffer supports evenly distributed around the central axis of the central support. Each buffer support includes a sleeve and a second piston rod. The lower end of the sleeve is fixed to the upper surface of the base, and the sleeve is a cylinder with an open top. The lower end of the second piston rod is slidably inserted into the sleeve, and the upper end of the second piston rod is fixed to the bottom of the extraction tank. A seal is formed between the lower end of the second piston rod and the sleeve.

[0009] The sleeve is also equipped with a positioning structure, which is used to limit the second piston rod when the lower end of the second piston rod moves to that position.

[0010] In the supercritical extraction equipment with the above-mentioned support structure, by setting a sleeve and a second piston rod and changing the driven movement direction of the central support body, the lifting and lowering movement of the extraction tank can be realized, while also providing a buffering and protective effect for the extraction tank to descend.

[0011] Furthermore, by further utilizing the design of the positioning structure, the position of the second piston rod can be limited, ensuring that the position of the second piston rod is stable after it descends. This means that the length of the central support body after it retracts can be fixed, resulting in high accuracy in repeated operations and better performance.

[0012] As a further improvement of this application, the upper end of the sleeve is formed into a constriction, the lower end of the second piston rod slides through the constriction of the sleeve, and the lower end of the second piston rod is fixed with a second piston plate that is sealed and fitted to the inner wall of the sleeve.

[0013] A balance hole is provided at the upper end of the sleeve.

[0014] As a further improvement to this application, the positioning structure includes a magnetic ring, which magnetically attracts the second piston plate;

[0015] A flexible washer is fixed to the upper end of the magnetic ring. When the magnetic ring attracts the second piston plate, the magnetic ring and the second piston plate together clamp the flexible washer.

[0016] As a further improvement of this application, the central support body includes a sleeve and a first piston rod. The upper end of the sleeve is integrally formed with a limiting flange whose inner diameter is smaller than that of the sleeve. The diameter of the first piston rod is smaller than that of the sleeve, and the lower end of the first piston rod is fixed with a first piston plate whose diameter is the same as that of the sleeve. The first piston plate is slidably embedded in the sleeve.

[0017] As another improvement of this application, the drive mechanism includes a motor, a half gear and a rack. The motor is fixed on the base by a bracket, the half gear is fixed to the output shaft of the motor, and the rack is fixed to one side of the first piston rod and meshes with the half gear.

[0018] As another improvement of this application, a main air groove is provided in the middle of the base, the main air groove is connected to the sleeve, and multiple horizontally extending connecting channels are provided around the main air groove.

[0019] The base is also provided with multiple annular air grooves, which are arranged around the outside of multiple sleeves, and the multiple annular air grooves are connected to the ends of multiple connecting channels away from the main air groove.

[0020] As another improvement of this application, the sleeve has multiple vertically extending heat dissipation fins integrally formed on its periphery, and the multiple heat dissipation fins are evenly distributed around the circumference of the sleeve's axis.

[0021] The openings of multiple annular air slots are detachably fixed with ring nets by bolts. The ring nets are used to prevent external debris from entering the annular air slots.

[0022] In summary, by setting up a sleeve and a second piston rod, and changing the driven movement direction of the middle support, the middle support rises when driven by the driving mechanism, thereby driving the extraction tank to rise. When the middle support is not driven by the driving mechanism, it falls under its own gravity, causing the second piston rod to fall synchronously. When the second piston rod falls, it compresses the gas in the sleeve. The gas in the sleeve is compressed and generates a reverse force to reduce the movement speed of the second piston rod and eventually stop the second piston rod from falling. This realizes the lifting and lowering movement of the extraction tank, and at the same time, it can provide a buffering protection effect for the descent of the extraction tank.

[0023] Furthermore, by utilizing the design of the positioning structure, the position of the second piston rod can be limited when it descends to the lowest position, thus stabilizing the position of the second piston rod after its descent. This fixes the length of the retracted central support, making it easier for the drive mechanism to drive the central support again. This results in high accuracy of repeated operations and avoids unstable shaking of the extraction tank, leading to better performance. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the first embodiment of this application;

[0025] Figure 2 This is a side view of the extraction vessel in the first embodiment of this application when it is hidden;

[0026] Figure 3 This is a schematic diagram of the base structure according to the first embodiment of this application;

[0027] Figure 4 This is a cross-sectional view of the buffer support body according to the first embodiment of this application;

[0028] Figure 5 This is a cross-sectional view of the central support body according to the first embodiment of this application.

[0029] Explanation of the labels in the diagram:

[0030] 1. Base, 11. Main gas groove, 12. Connecting channel, 13. Annular gas groove, 2. Extraction tank, 3. Central support, 31. Sleeve, 311. Limiting flange, 32. First piston rod, 321. First piston plate, 4. Buffer support, 41. Sleeve, 411. Balance hole, 42. Second piston rod, 421. Second piston plate, 43. Heat dissipation fins, 44. Magnetic ring, 45. Flexible washer, 5. Drive mechanism, 51. Motor, 52. Half gear, 53. Rack, 6. Ring network. Detailed Implementation

[0031] The following describes one embodiment of this application in detail with reference to the accompanying drawings.

[0032] Implementation method 1:

[0033] Figure 1-5 A supercritical extraction device with a support structure is shown, including a base 1 and an extraction tank 2. A central support 3 is installed above the base 1. The central support 3 is a telescopic column. A drive mechanism 5 is also installed on the base 1 to drive the upper end of the central support 3 to rise.

[0034] Above the base 1, multiple buffer supports 4 are evenly distributed along the circumference of the central axis of the central support 3. Each buffer support 4 includes a sleeve 41 and a second piston rod 42. The lower end of the sleeve 41 is fixed to the upper surface of the base 1, and the sleeve 41 is a cylinder with an open upper end. The lower end of the second piston rod 42 is slidably inserted into the sleeve 41. The upper end of the second piston rod 42 is fixed to the bottom of the extraction tank 2, and a seal is formed between the lower end of the second piston rod 42 and the sleeve 41.

[0035] A positioning structure is also installed inside the sleeve 41. The positioning structure is used to limit the second piston rod 42 when the lower end of the second piston rod 42 moves to that position.

[0036] Based on the above structure, by setting up the sleeve 41 and the second piston rod 42, and changing the driven movement direction of the middle support 3, the middle support 3 rises when driven by the driving mechanism 5, thereby driving the extraction tank 2 to rise. When the middle support 3 is not driven by the driving mechanism 5, it falls under its own gravity, causing the second piston rod 42 to fall synchronously. When the second piston rod 42 falls, it compresses the gas in the sleeve 41. When the gas in the sleeve 41 is compressed, it generates a reverse force to reduce the movement speed of the second piston rod 42 and eventually stop the second piston rod 42 from falling, thereby realizing the lifting and lowering movement of the extraction tank 2, and at the same time, it can provide a buffering and protective effect for the descent of the extraction tank 2.

[0037] Furthermore, by utilizing the design of the positioning structure, the position of the second piston rod 42 can be limited when it descends to the lowest position, thus stabilizing the position of the second piston rod 42 after its descent. This ensures that the length of the middle support 3 after retraction is fixed, making it easier for the drive mechanism 5 to drive the middle support 3 again. This results in high accuracy of repeated operations and avoids unstable shaking of the extraction tank 2, leading to better performance.

[0038] Furthermore, the upper end of the sleeve 41 forms a constriction, the lower end of the second piston rod 42 slides through the constriction of the sleeve 41, and the lower end of the second piston rod 42 is fixed with a second piston plate 421 that is sealed and fitted to the inner wall of the sleeve 41. A balance hole 411 is provided at the upper constriction of the sleeve 41.

[0039] The positioning structure includes a magnetic ring 44, which magnetically attracts the second piston plate 421. A flexible washer 45 is fixed to the upper end of the magnetic ring 44. When the magnetic ring 44 attracts the second piston plate 421, the magnetic ring 44 and the second piston plate 421 together clamp the flexible washer 45.

[0040] When the second piston rod 42 descends, the second piston plate 421 descends synchronously and continuously compresses the air in the sleeve 41 below the second piston plate 421, increasing the air pressure below the second piston plate 421 in the sleeve 41, thus achieving a damping and buffering effect. The lower the height of the second piston plate 421, the slower the movement speed. When the second piston plate 421 enters the adsorption range of the magnetic ring 44, the magnetic ring 44 can assist the second piston plate 421 in completing its final descent through adsorption. Under the gravity of the extraction tank 2 and the adsorption of the magnetic ring 44, the second piston plate 421 finally stops above the magnetic ring 44. At the same time, the flexible washer 45 and the magnetic ring 44 work together to reduce or even eliminate the reverse movement tendency of the second piston plate 421, thus keeping the second piston plate 421 in a predetermined position. This achieves the effect of fixing the length of the middle support 3 after it contracts as the extraction tank 2 descends.

[0041] Furthermore, the central support 3 includes a sleeve 31 and a first piston rod 32. The upper end of the sleeve 31 is integrally formed with a limiting flange 311 whose inner diameter is smaller than that of the sleeve 31. The diameter of the first piston rod 32 is smaller than that of the sleeve 31, and the lower end of the first piston rod 32 is fixed with a first piston plate 321 whose diameter is the same as that of the sleeve 31. The first piston plate 321 is slidably embedded in the sleeve 31.

[0042] Furthermore, the drive mechanism 5 includes a motor 51, a half gear 52, and a rack 53. The motor 51 is fixed to the base 1 by a bracket, the half gear 52 is fixed to the output shaft of the motor 51, and the rack 53 is fixed to one side of the first piston rod 32 and meshes with the half gear 52.

[0043] Motor 51 drives half gear 52 to rotate, half gear 52 drives rack 53 to rise, thereby driving first piston rod 32 to rise. When first piston rod 32 rises, it lifts extraction tank 2. When rack 53 separates from half gear 52, extraction tank 2 falls under its own gravity, forming reciprocating vibration, so as to promote extraction efficiency.

[0044] Furthermore, a main air groove 11 is provided in the middle of the base 1, the main air groove 11 is connected to the sleeve 31, and multiple horizontally extending connecting channels 12 are provided around the main air groove 11.

[0045] The base 1 is also provided with a plurality of annular air grooves 13, which are respectively arranged around the outside of the plurality of sleeves 41, and the plurality of annular air grooves 13 are respectively connected to the end of the plurality of connecting channels 12 away from the main air groove 11.

[0046] When the first piston rod 32 rises, a negative pressure is formed inside the sleeve 31, which in turn creates negative pressure in the main air groove 11, the connecting channel 12, and the annular air groove 13 connected to the sleeve 31. This draws external air into the sleeve 31, the main air groove 11, the connecting channel 12, and the annular air groove 13. When the first piston rod 32 falls, the first piston plate 321 pushes the air inside the sleeve 31 outward, causing the air to be ejected from the annular air groove 13 and forming an annular air duct that blows onto the outer surface of the sleeve 41. This allows the air to cool the sleeve 41, dissipating the heat generated when the air inside the sleeve 41 is compressed. This helps to maintain a stable temperature for the sleeve 41, the air inside the sleeve 41, and the second piston rod 42, preventing the temperature from continuously rising during operation and reducing the service life of the equipment.

[0047] Furthermore, the sleeve 41 has multiple vertically extending heat dissipation fins 43 integrally formed on its periphery. The multiple heat dissipation fins 43 are evenly distributed around the axis of the sleeve 41. The heat dissipation fins 43 can further increase the contact area between the sleeve 41 and the air, thereby enhancing the heat dissipation efficiency.

[0048] Each of the openings of the multiple annular air slots 13 is detachably fixed with a ring mesh 6 by bolts. The ring mesh 6 is used to block external debris from entering the annular air slots 13. The ring mesh 6 can prevent external debris from entering the annular air slots 13, thereby preventing the annular air slots 13 from becoming blocked and ensuring their normal operation for a long time.

[0049] In light of current practical needs, the above-described embodiments adopted in this application are not limited to this scope of protection. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A supercritical extraction device with a support structure, comprising a base (1) and an extraction tank (2), wherein a central support (3) is installed above the base (1), the central support (3) being a retractable column, and a driving mechanism (5) for driving the upper end of the central support (3) to rise is also installed on the base (1), characterized in that: Above the base (1), there are also a plurality of buffer supports (4) evenly distributed along the central axis of the central support (3). The buffer support (4) includes a sleeve (41) and a second piston rod (42). The lower end of the sleeve (41) is fixed to the upper surface of the base (1), and the sleeve (41) is a cylinder with an open upper end. The lower end of the second piston rod (42) is slidably inserted into the sleeve (41). The upper end of the second piston rod (42) is fixed to the bottom of the extraction tank (2), and a seal is formed between the lower end of the second piston rod (42) and the sleeve (41). The sleeve (41) is also equipped with a positioning structure, which is used to limit the second piston rod (42) when the lower end of the second piston rod (42) moves to that position.

2. The supercritical extraction device with a support structure according to claim 1, characterized in that: The upper end of the sleeve (41) forms a constriction, the lower end of the second piston rod (42) slides through the constriction of the sleeve (41), and the lower end of the second piston rod (42) is fixed with a second piston plate (421) that is sealed and fitted to the inner wall of the sleeve (41). A balance hole (411) is provided at the upper end of the sleeve (41).

3. The supercritical extraction device with a support structure according to claim 2, characterized in that: The positioning structure includes a magnetic ring (44), which magnetically adsorbs the second piston plate (421). A flexible washer (45) is fixed at the upper end of the magnetic ring (44). When the magnetic ring (44) adsorbs the second piston plate (421), the magnetic ring (44) and the second piston plate (421) together clamp the flexible washer (45).

4. The supercritical extraction device with a support structure according to claim 2, characterized in that: The central support (3) includes a sleeve (31) and a first piston rod (32). The upper end of the sleeve (31) is integrally formed with a limiting flange (311) whose inner diameter is smaller than that of the sleeve (31). The diameter of the first piston rod (32) is smaller than that of the sleeve (31), and the lower end of the first piston rod (32) is fixed with a first piston plate (321) whose diameter is the same as that of the sleeve (31). The first piston plate (321) is slidably embedded in the sleeve (31).

5. A supercritical extraction device with a support structure according to claim 4, characterized in that: The drive mechanism (5) includes a motor (51), a half gear (52) and a rack (53). The motor (51) is fixed on the base (1) by a bracket. The half gear (52) is fixed to the output shaft of the motor (51). The rack (53) is fixed to one side of the first piston rod (32) and meshes with the half gear (52).

6. A supercritical extraction device with a support structure according to claim 4, characterized in that: The base (1) has a main air groove (11) in the middle of its upper part. The main air groove (11) is connected to the sleeve (31). Multiple horizontally extending connecting channels (12) are opened around the main air groove (11). The base (1) is also provided with a plurality of annular air grooves (13), which are respectively arranged around the outside of the plurality of sleeves (41), and the plurality of annular air grooves (13) are respectively connected to the end of the plurality of connecting channels (12) away from the main air groove (11).

7. A supercritical extraction device with a support structure according to claim 6, characterized in that: The sleeve (41) has a plurality of vertically extending heat dissipation fins (43) integrally formed on its periphery, and the plurality of heat dissipation fins (43) are evenly distributed around the axis of the sleeve (41). Each of the openings of the annular air grooves (13) is detachably fixed with a ring mesh (6) by bolts. The ring mesh (6) is used to block external debris from entering the annular air grooves (13).

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