Squeezing device for essential oil extraction

Abstract

The utility model discloses a squeezing device for essential oil extraction, and relates to the technical field of essential oil extraction. One side of the top of the base is fixedly connected with a supporting plate; the top of the supporting plate is fixedly connected with a top plate; the bottom of the top plate is fixedly connected with an electric push rod; the output end of the bottom of the electric push rod is fixedly connected with an extrusion disc; a containing groove is formed in the middle of the side, away from the supporting plate, of the base, an oil receiving tank is arranged on the inner side of the containing groove in a clearance fit mode and located below the oil discharging groove, an auxiliary squeezing assembly is arranged at the top of the base, and a limiting assembly is arranged on the inner side of the containing groove. According to the oil extraction device, due to the arrangement of the squeezing auxiliary assembly, materials are fully stirred in the device, so that the materials in the device can be fully squeezed for oil extraction, and the overall oil extraction effect can be improved.

Description

Technical Field

[0001] This utility model relates to the field of essential oil extraction technology, and in particular to a pressing device for essential oil extraction. Background Technology

[0002] The basic principle of essential oil extraction is to extract the essential oil components from plant materials through mechanical pressing. For citrus fruits, this mainly involves pressing the peel; while for the seeds or nuts of certain plants, the oil inside is pressed to obtain plant oil containing essential oils.

[0003] The authorized publication number "CN218615568U" discloses a pressing device for extracting rose essential oil, which describes the following technical problem: "After placing rose petals in the pressing frame, the rose petals are pressed to extract essential oil by the pressing mechanism. The rose petals on the inner wall of the pressing frame are scraped onto the bottom plate and the inclined plate. When the bottom plate and the inclined plate move to the top of the pressing frame, the used rose petals can be directly removed from the bottom plate and the inclined plate. This allows for easy removal of the used rose petals after pressing, saving manpower and resources."

[0004] In the process of implementing this patent, the applicant discovered the following technical problems:

[0005] Because the pressing device described in the patent causes the material to be pressed to be squeezed to the periphery of the pressing area during the pressing process, and there is no device to gather and adjust the internal material, the material located at the edge of the pressing area will have a certain impact on the overall pressing and oil extraction effect. Therefore, it is necessary to propose a pressing device for essential oil extraction to provide a new technical solution to solve the technical problems mentioned in the above patent. Utility Model Content

[0006] Based on this, a pressing device for essential oil extraction is provided to solve the following technical problem mentioned in the background art: When the pressing device set in this patent is pressing the material, the material being pressed will be squeezed to the periphery of the pressing area during the pressing process, and there is no device to gather and adjust the internal material. Therefore, the material located at the edge of the pressing area will have a certain impact on the overall pressing and oil extraction effect.

[0007] The present invention adopts the following technical solution:

[0008] The aforementioned oil extraction pressing device specifically includes a base, a support plate fixedly connected to one side of the top of the base, a top plate fixedly connected to the top of the support plate, an electric push rod fixedly connected to the bottom of the top plate, a pressing disc fixedly connected to the output end of the electric push rod, a pressing barrel fixedly connected to the top of the base, the pressing barrel being positioned directly below the pressing disc, and the pressing disc and the inner side of the pressing barrel being clearance-fitted, an oil draining groove fixedly connected to the bottom of the pressing barrel at the end away from the support plate, and the pressing barrel being connected to the outside through the oil draining groove, a placement groove being formed in the middle of the side of the base away from the support plate, an oil receiving tank being clearance-fitted inside the placement groove, the oil receiving tank being positioned below the oil draining groove, a pressing auxiliary component being provided on the top of the base, and a limit component being provided inside the placement groove.

[0009] Furthermore, the pressing auxiliary component includes a positioning ring, a placement cylinder, and connecting rods. The positioning ring is fixedly connected to the inner circumference of the pressing barrel and is located above the oil discharge groove. The placement cylinder is located at the bottom of the inner side of the pressing barrel. Multiple connecting rods are fixedly connected to the outer circumference of the top of the placement cylinder. The ends of the connecting rods away from the placement cylinder are all fixedly connected to the inner circumference of the positioning ring.

[0010] Furthermore, the pressing auxiliary assembly also includes a first motor, a first connecting rod, a filter disc, and a second connecting rod. The first motor is fixedly connected to the inner side of the top of the placing cylinder, and the first connecting rod is fixedly connected to the output end of the top of the first motor. A cross-shaped movable groove is opened on the top of the first connecting rod. The filter disc is fitted with the inner side of the pressing cylinder with a clearance. The second connecting rod is fixedly connected to the center position of the bottom of the filter disc, and a cross-shaped insert is fixedly connected to the bottom of the second connecting rod. The second connecting rod and the first connecting rod are configured for insertion and limiting cooperation.

[0011] Furthermore, the pressing auxiliary component also includes a second motor and a diamond-shaped scraper. The second motor is fixedly connected to the inner side of the bottom of the placement cylinder, and the diamond-shaped scraper is fixedly connected to the output end of the bottom of the second motor. The bottom of the diamond-shaped scraper is configured to scrape and sweep the bottom surface of the pressing cylinder.

[0012] Furthermore, the pressing auxiliary assembly also includes an arc-shaped scraper, a linkage rod, a drive plate, a dual-head motor, and a threaded rod. A first movable groove is formed at both ends of the inner circumference of the pressing barrel. An arc-shaped scraper is fitted with the inner side of the first movable groove with a clearance fit. The arc-shaped scraper is configured to scrape against the top surface of the pressing barrel. A linkage rod is fixedly connected to the end of the arc-shaped scraper away from the filter disc. The linkage rod penetrates the side wall of the pressing barrel and extends to the outer sides of both ends of the pressing barrel. The linkage rod is fitted with the side wall of the pressing barrel with a clearance fit. A drive plate is fixedly connected to the end of the linkage rod located on the outer side of the pressing barrel. A second movable groove is formed on the side of the support plate near the pressing barrel. A dual-head motor is fixedly connected to the center of the inner side of the second movable groove. Threaded rods are fixedly connected to the output ends of both ends of the dual-head motor. The two threaded rods are symmetrically arranged. The two drive plates extend to the inner side of the second movable groove on the side away from the linkage rod and are threadedly connected to the corresponding threaded rod.

[0013] Furthermore, the limiting component includes a fixed rod, a movable limiting block, and a spring. A third movable groove is provided at both ends of the inner side of the placement groove. A fixed rod is fixedly connected to the inner side of the third movable groove. A movable limiting block is clearance-fitted to the outer side of the fixed rod. The movable limiting block and the third movable groove are clearance-fitted. The end of the movable limiting block located inside the placement groove limits the oil receiving tank. A spring is provided on the outer side of the fixed rod, and both ends of the spring are fixedly connected to the movable limiting block and the inner side of the third movable groove, respectively.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This utility model provides a pressing device for essential oil extraction. By fully agitating the material inside the device, the material inside the device can be fully pressed to extract oil, thereby improving the overall oil extraction effect.

[0016] This utility model provides a pressing device for essential oil extraction. By conveniently clamping and fixing the oil receiving tank, it can improve the stability of oil receiving and also improve the convenience of changing the oil receiving tank. Attached Figure Description

[0017] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1A schematic diagram of the overall structure of a pressing device for essential oil extraction provided by this utility model;

[0019] Figure 2 A schematic diagram of the structure of the pressing barrel of a pressing device for essential oil extraction provided by this utility model;

[0020] Figure 3 A schematic diagram of the positioning ring of a pressing device for essential oil extraction provided by this utility model;

[0021] Figure 4 A schematic diagram of the structure of the placing cylinder of a pressing device for essential oil extraction provided by this utility model;

[0022] Figure 5 This utility model provides a pressing device for essential oil extraction. Figure 4 A schematic diagram of the structure at point A;

[0023] Figure 6 A schematic diagram of the structure of an arc-shaped scraper for an essential oil extraction pressing device provided by this utility model;

[0024] Figure 7 This is a schematic diagram of the structure of a spring in a pressing device for essential oil extraction provided by this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Base; 2. Support plate; 3. Top plate; 4. Electric push rod; 5. Extrusion plate; 6. Pressing barrel; 7. Oil discharge trough; 8. Oil receiving tank; 9. Pressing auxiliary components; 10. Limiting components; 11. Positioning ring; 12. Placement cylinder; 13. Connecting rod; 14. First motor; 15. First insertion rod; 16. Filter plate; 17. Second insertion rod; 18. Second motor; 19. Diamond scraper; 20. Arc scraper; 21. Linkage rod; 22. Driving plate; 23. Double-headed motor; 24. Threaded rod; 25. Fixed rod; 26. Movable limit block; 27. Spring. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 should fall within the protection scope of the present invention.

[0028] As in the background art, when the pressing device in this patent is pressing the material, the material being pressed will be squeezed to the periphery of the pressing area during the pressing process, and there is no device to gather and adjust the internal material. Therefore, the material located at the edge of the pressing area will have a certain impact on the overall pressing and oil extraction effect.

[0029] To solve this technical problem, this utility model provides a pressing device for essential oil extraction. By fully agitating the material inside the device, the material inside the device can be fully pressed to extract oil, thereby improving the overall oil extraction effect.

[0030] For details, please refer to Figures 1-2 A pressing device for essential oil extraction specifically includes a base 1, a support plate 2 fixedly connected to one side of the top of the base 1, a top plate 3 fixedly connected to the top of the support plate 2, an electric push rod 4 fixedly connected to the bottom of the top plate 3, a pressing disc 5 fixedly connected to the output end of the bottom of the electric push rod 4, a pressing barrel 6 fixedly connected to the top of the base 1, the pressing barrel 6 being positioned directly below the pressing disc 5, and the pressing disc 5 and the inner side of the pressing barrel 6 being fitted with a clearance fit, an oil drain trough 7 fixedly connected to the bottom of the end of the pressing barrel 6 away from the support plate 2, and the pressing barrel 6 being connected to the outside through the oil drain trough 7, a placement groove being opened in the middle of the side of the base 1 away from the support plate 2, an oil receiving tank 8 being fitted with a clearance fit inside the placement groove, the oil receiving tank 8 being positioned below the oil drain trough 7, a pressing auxiliary component 9 being provided on the top of the base 1, and a limit component 10 being provided inside the placement groove.

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0032] Example 1:

[0033] Please refer to Figures 1-2 An essential oil extraction pressing device includes a base 1, a support plate 2 fixedly connected to one side of the top of the base 1, a top plate 3 fixedly connected to the top of the support plate 2, an electric push rod 4 fixedly connected to the bottom of the top plate 3, a pressing disc 5 fixedly connected to the output end of the bottom of the electric push rod 4, a pressing barrel 6 fixedly connected to the top of the base 1, the pressing barrel 6 being positioned directly below the pressing disc 5, and the pressing disc 5 and the inner side of the pressing barrel 6 being clearance-fitted, an oil drain trough 7 fixedly connected to the bottom of the end of the pressing barrel 6 away from the support plate 2, and the pressing barrel 6 being connected to the outside through the oil drain trough 7, a placement groove being opened in the middle of the side of the base 1 away from the support plate 2, an oil receiving tank 8 being clearance-fitted inside the placement groove, the oil receiving tank 8 being positioned below the oil drain trough 7, a pressing auxiliary component 9 being provided on the top of the base 1, and a limit component 10 being provided inside the placement groove.

[0034] When in use, place the material to be extracted inside the pressing barrel 6, and then turn on the electric push rod 4 to drive the pressing plate 5 to move downwards and insert it into the pressing barrel 6 to perform pressing and oil extraction operations on the material to be extracted.

[0035] By setting the pressing auxiliary component 9, the material to be extracted can be moved closer to the center of the pressing barrel 6, thereby improving the pressing effect of the pressing plate 5 on the material to be extracted. Subsequently, the pressed oil will flow into the bottom inner side of the pressing barrel 6 through the pressing auxiliary component 9, and be discharged into the inner side of the oil receiving tank 8 through the oil discharge trough 7.

[0036] By setting up the pressing auxiliary component 9, it can also scrape the bottom surface of the pressing barrel 6, thereby preventing oil residue from remaining on the bottom inside of the pressing barrel 6.

[0037] By setting the limiting component 10, the position of the docking oil tank 8 can be fixed. At the same time, after a certain amount of oil is collected inside the docking oil tank 8, the docking oil tank 8 can be taken out by setting the limiting component 10, thereby improving the convenience of placing and taking out the docking oil tank 8.

[0038] Example 2:

[0039] This embodiment 2 further discloses the specific structure of the pressing auxiliary component 9 based on the above embodiments. By combining the pressing auxiliary component 9 with the structure in the above embodiments, the material inside the device can be fully pressed and extracted by fully agitating the material inside the device, thereby improving the overall oil extraction effect.

[0040] The pressing apparatus for essential oil extraction provided in Example 1 has been further optimized, specifically, as follows: Figures 3-6 As shown, the pressing auxiliary component 9 includes a positioning ring 11, a placement cylinder 12, and connecting rods 13. The positioning ring 11 is fixedly connected to the inner circumference of the pressing barrel 6. The positioning ring 11 is located above the oil discharge trough 7. The placement cylinder 12 is located at the bottom of the inner side of the pressing barrel 6. Multiple connecting rods 13 are fixedly connected to the outer circumference of the top of the placement cylinder 12. The ends of the connecting rods 13 away from the placement cylinder 12 are all fixedly connected to the inner circumference of the positioning ring 11.

[0041] The pressing auxiliary component 9 also includes a first motor 14, a first insertion rod 15, a filter disc 16, and a second insertion rod 17. The first motor 14 is fixedly connected to the inner side of the top of the placing cylinder 12. The first insertion rod 15 is fixedly connected to the output end of the top of the first motor 14. A cross-shaped movable groove is opened on the top of the first insertion rod 15. The filter disc 16 is fitted with a gap inside the pressing barrel 6. The second insertion rod 17 is fixedly connected to the center position of the bottom of the filter disc 16. A cross-shaped insertion block is fixedly connected to the bottom of the second insertion rod 17. The second insertion rod 17 and the first insertion rod 15 are configured for insertion and limiting cooperation.

[0042] The pressing auxiliary component 9 also includes a second motor 18 and a diamond-shaped scraper 19. The second motor 18 is fixedly connected to the inner side of the bottom of the placement cylinder 12, and the diamond-shaped scraper 19 is fixedly connected to the output end of the bottom of the second motor 18. The bottom of the diamond-shaped scraper 19 and the bottom surface of the pressing barrel 6 are configured to scrape and sweep.

[0043] The pressing auxiliary component 9 also includes an arc-shaped scraper 20, a linkage rod 21, a drive plate 22, a dual-head motor 23, and a threaded rod 24. Both ends of the inner circumference of the pressing barrel 6 are provided with first movable grooves. An arc-shaped scraper 20 is fitted into the inner side of the first movable groove with a clearance. The arc-shaped scraper 20 and the top surface of the pressing barrel 6 are configured for scraping. A linkage rod 21 is fixedly connected to the end of the arc-shaped scraper 20 away from the filter disc 16. The linkage rod 21 penetrates the side wall of the pressing barrel 6 and extends to the outer sides of both ends of the pressing barrel 6. The linkage rod 21 and... The side wall of the pressing barrel 6 is designed with a mating fit. The end of the linkage rod 21 located on the outside of the pressing barrel 6 is fixedly connected to the driving plate 22. The support plate 2 has a second movable groove on the side near the pressing barrel 6. A double-headed motor 23 is fixedly connected to the center of the inner side of the second movable groove. The output ends of the double-headed motor 23 are fixedly connected to threaded rods 24. The two threaded rods 24 are arranged symmetrically. The side of the two driving plates 22 away from the linkage rod 21 extends to the inner side of the second movable groove and is threadedly connected to the corresponding threaded rod 24.

[0044] Specifically: By fitting the filter disc 16 with the inner side of the pressing barrel 6, the filter disc 16 can be removed from the inner side of the pressing barrel 6 when cleaning the filter disc 16, thereby improving the cleaning effect of the filter disc 16 and the inner side of the pressing barrel 6. When the filter disc 16 is placed inside the pressing barrel 6, the bottom periphery of the filter disc 16 is placed against the top of the positioning ring 11, and the positioning ring 11 is used to position the filter disc 16.

[0045] At the same time, the second plug rod 17 at the bottom of the filter disc 16 will also be inserted into the inside of the first plug rod 15 at the top of the first motor 14, so that the first motor 14 can drive the filter disc 16 to rotate inside the pressing barrel 6 through the first plug rod 15 and the second plug rod 17.

[0046] When it is necessary to move the material to be extracted, the double-head motor 23 is turned on and the two threaded rods 24 are driven to rotate simultaneously inside the second movable groove. This drives the two drive plates 22 that are threaded to the threaded rods 24 to move synchronously and in opposite directions. At the same time, through the connection of the linkage rod 21, the two arc-shaped scrapers 20 at both ends of the inner side of the pressing barrel 6 can be driven to move synchronously and in opposite directions.

[0047] By using the arc-shaped scraper 20 to scrape against the top surface of the filter disc 16, the material squeezed on the top of the filter disc 16 can be pushed towards the center of the top of the filter disc 16.

[0048] Then, by turning on the first motor 14 and driving the filter disc 16 to rotate inside the pressing barrel 6, the two arc-shaped scrapers 20 can push the material on the top of the filter disc 16 in all directions, thereby improving the effect of the arc-shaped scrapers 20 in pushing the material on the top of the filter disc 16, and thus further improving the pressing and oil extraction effect of the material.

[0049] When the material at the top of the filter plate 16 is pressed to produce oil, the oil will drip through the filter plate 16 to the bottom inside of the pressing barrel 6 and be discharged through the oil drain trough 7.

[0050] At the same time, by turning on the second motor 18, the diamond scraper 19 can be driven to rotate inside the bottom of the pressing barrel 6. Through the scraping setting of the diamond scraper 19 and the bottom of the pressing barrel 6, the oil inside the bottom of the pressing barrel 6 can be scraped clean, thereby avoiding material waste and preventing oil from accumulating inside the bottom of the pressing barrel 6.

[0051] Example 3:

[0052] This embodiment 3 further discloses the specific structure of the limiting component 10 based on the above embodiments. By cooperating with the structure in the above embodiments, the oil receiving tank 8 can be conveniently clamped and fixed, thereby improving the stability when receiving oil and also improving the convenience when replacing the oil receiving tank 8.

[0053] The pressing apparatus for essential oil extraction provided in Example 1 and Example 2 has been further optimized, specifically, as follows: Figure 7 As shown, the limiting component 10 includes a fixed rod 25, a movable limiting block 26, and a spring 27. A third movable groove is provided at both ends of the inner side of the placement groove. The fixed rod 25 is fixedly connected to the inner side of the third movable groove. The movable limiting block 26 is clearance-fitted to the outer side of the fixed rod 25. The movable limiting block 26 and the third movable groove are clearance-fitted. One end of the movable limiting block 26 located inside the placement groove connects to the oil tank 8 to provide a limiting function. A spring 27 is provided on the outer side of the fixed rod 25. Both ends of the spring 27 are fixedly connected to the movable limiting block 26 and the inner side of the third movable groove, respectively.

[0054] Specifically: Through the elastic setting of spring 27, the movable limiting block 26 can be pushed out of the inner side of the third movable groove and extended into the inner side of the placement groove to connect with the oil tank 8 to achieve the limiting effect, thereby improving the stability of the oil tank 8 inside the placement groove.

[0055] Meanwhile, the spring 27 connects the movable limit block 26 and the third movable groove, thus preventing the movable limit block 26 from dislodging from the inside of the third movable groove.

[0056] When it is necessary to remove the oil receiving tank 8, the movable limiting block 26 can be moved to the inside of the third movable groove and inserted into the inside of the third movable groove, so that the movable limiting block 26 can remove the blocking effect of the oil receiving tank 8, making it easier to remove the oil receiving tank 8 from the inside of the placement groove.

[0057] The fixed rod 25 provides support for the movement of the movable limit block 26 within the third movable groove.

Claims

1. A pressing device for the extraction of essential oils, comprising a base (1), characterized in that, The top of the base (1) is fixedly connected with a support plate (2), the top of the support plate (2) is fixedly connected with a top plate (3), the bottom of the top plate (3) is fixedly connected with an electric push rod (4), the output end of the bottom of the electric push rod (4) is fixedly connected with a squeezing disc (5), the top of the base (1) is fixedly connected with a squeezing barrel (6), the squeezing barrel (6) is arranged directly below the squeezing disc (5), and the squeezing disc (5) and the inner side of the squeezing barrel (6) are gap-fitted, the bottom of the end of the squeezing barrel (6) away from the support plate (2) is fixedly connected with an oil discharge groove (7), and the squeezing barrel (6) is communicatively connected with the outside through the oil discharge groove (7), the middle of the side of the base (1) away from the support plate (2) is provided with a placing groove, the inner side of the placing groove is gap-fitted with an oil receiving tank (8), the oil receiving tank (8) is arranged below the oil discharge groove (7), and the top of the base (1) is provided with a squeezing auxiliary assembly (9), and the inner side of the placing groove is provided with a limiting assembly (10).

2. The pressing device for extracting essential oil according to claim 1, wherein The squeezing auxiliary assembly (9) comprises a positioning ring (11), a placing cylinder (12) and a connecting rod (13), the inner circumferential side of the squeezing barrel (6) is fixedly connected with the positioning ring (11), the positioning ring (11) is arranged above the oil discharge groove (7), the inner side of the bottom of the squeezing barrel (6) is provided with the placing cylinder (12), and the outer circumferential side of the top of the placing cylinder (12) is fixedly connected with a plurality of connecting rods (13), and one end of the connecting rod (13) away from the placing cylinder (12) is fixedly connected with the inner circumferential side of the positioning ring (11).

3. The pressing device for extracting essential oil according to claim 2, wherein The squeezing auxiliary assembly (9) further comprises a first motor (14), a first plug-in rod (15), a filter disc (16) and a second plug-in rod (17), the inner side of the top of the placing cylinder (12) is fixedly connected with the first motor (14), the output end of the top of the first motor (14) is fixedly connected with the first plug-in rod (15), the top of the first plug-in rod (15) is provided with a cross-shaped movable groove, the inner side of the squeezing barrel (6) is gap-fitted with the filter disc (16), the bottom of the filter disc (16) is fixedly connected with the second plug-in rod (17) at the center position, the bottom of the second plug-in rod (17) is fixedly connected with a cross-shaped plug, and the second plug-in rod (17) and the first plug-in rod (15) are in plug-limiting fit.

4. The pressing device for extracting essential oil according to claim 3, wherein The squeezing auxiliary assembly (9) further comprises a second motor (18) and a rhombic scraper (19), the inner side of the bottom of the placing cylinder (12) is fixedly connected with the second motor (18), the output end of the bottom of the second motor (18) is fixedly connected with the rhombic scraper (19), and the bottom of the rhombic scraper (19) is in scraping fit with the bottom surface of the squeezing barrel (6).

5. The pressing device for extracting essential oil according to claim 4, wherein The pressing auxiliary assembly (9) further comprises an arc-shaped scraper (20), a linkage rod (21), a driving plate (22), a double-head motor (23) and a threaded rod (24), both ends of the inner circumferential side of the pressing barrel (6) are provided with a first movable groove, the arc-shaped scraper (20) is gap-fitted in the first movable groove, the arc-shaped scraper (20) and the top surface of the pressing barrel (6) are arranged in scraping cooperation, one end of the arc-shaped scraper (20) away from the filter disc (16) is fixedly connected with the linkage rod (21), the linkage rod (21) penetrates through the side wall of the pressing barrel (6) and extends to the outside of both ends of the pressing barrel (6), the linkage rod (21) and the side wall of the pressing barrel (6) are arranged in interval cooperation, one end of the linkage rod (21) located outside the pressing barrel (6) is fixedly connected with the driving plate (22), the support plate (2) is provided with a second movable groove near one side of the pressing barrel (6), a double-head motor (23) is fixedly connected to the inner side of the center of the second movable groove, threaded rods (24) are fixedly connected to the output ends of both ends of the double-head motor (23), the two threaded rods (24) are symmetrically arranged, and the two driving plates (22) away from the linkage rod (21) on one side extend to the inner side of the second movable groove and are arranged in threaded connection with the corresponding threaded rods (24).

6. The pressing device for extracting essential oil according to claim 1, wherein The limiting assembly (10) comprises a fixed rod (25), a movable limiting block (26) and a spring (27), both ends of the inner side of the placing groove are provided with a third movable groove, the third movable groove is fixedly connected with the fixed rod (25), the outer side of the fixed rod (25) is gap-fitted with the movable limiting block (26), the movable limiting block (26) and the third movable groove are arranged in gap cooperation, one end of the movable limiting block (26) located in the inner side of the placing groove limits the oil receiving tank (8), and the outer side of the fixed rod (25) is provided with the spring (27), and both ends of the spring (27) are fixedly connected with the movable limiting block (26) and the inner side of the third movable groove.

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