Filter suitable for essential oil extraction

Abstract

The utility model provides a filter suitable for essential oil extraction, which relates to the technical field of essential oil extraction equipment and comprises a receiving unit, a filter unit, a support unit, a rigid filter screen, a molecular sieve membrane and a filter material. The receiving unit is provided with a receiving cavity, the top of the receiving unit is provided with an essential oil inlet, and the essential oil inlet communicates with the receiving cavity; the filtering unit is provided with a filtering cavity, the filtering unit is arranged at the bottom of the receiving unit, and the filtering cavity communicates with the receiving cavity; the supporting unit is provided with a containing cavity, an essential oil outlet is formed in the bottom of the supporting unit, the containing cavity is communicated to the essential oil outlet, the supporting unit is arranged at the bottom of the filtering unit, and the containing cavity is communicated to the filtering cavity; the rigid filter screen and the molecular sieve membrane are arranged between the receiving cavity and the filtering cavity; and the filter material is filled in the filter cavity. The filter can filter essential oil for three times, not only can remove lipid compounds such as vegetable wax in the essential oil, but also can remove other impurities, and can improve the extraction effect and improve the quality of the essential oil.

Description

Technical Field

[0001] The utility model relates to the technical field of essential oil extraction equipment, in particular to a filter suitable for essential oil extraction. Background Art

[0002] Supercritical CO2 extraction is a highly efficient technology for extracting compounds from plant materials. In this process, CO2 is adjusted to a supercritical state, that is, a state of high pressure and high temperature, so that it has the characteristics of both liquid and gas. Essential oil products extracted by supercritical CO2 contain some lipid compounds such as plant waxes. These compounds are flocculent and are mixed with the normal amber pure essential oil droplets, affecting the purity of the essential oil.

[0003] However, when supercritical carbon dioxide extraction is used to obtain essential oils, the existing filtering device will cause the essential oil to be lost during the purification process, resulting in low purity of the essential oil. Based on this, in order to improve the extraction effect and enhance the quality of the essential oil, it is necessary to provide a filtering device to filter the extraction product so as to obtain essential oil with higher purity. Utility Model Content

[0004] The utility model provides a filter suitable for essential oil extraction, which is used to improve the extraction effect and enhance the quality of the essential oil in the process of extracting the essential oil with supercritical carbon dioxide, so as to obtain the essential oil with higher purity.

[0005] The utility model provides a filter suitable for essential oil extraction, comprising:

[0006] A receiving unit, wherein a receiving cavity is disposed inside the receiving unit, an essential oil inlet is disposed on the top of the receiving unit, and the essential oil inlet is connected to the receiving cavity;

[0007] A filter unit, wherein the filter unit is constructed as a cylindrical structure, a filter cavity is arranged inside the filter unit, the filter unit is arranged at the bottom of the receiving unit, and the filter cavity is connected to the receiving cavity;

[0008] A support unit, wherein a receiving cavity is disposed inside the support unit, an essential oil outlet is disposed at the bottom of the support unit, the receiving cavity is connected to the essential oil outlet, the support unit is disposed at the bottom of the filter unit, and the receiving cavity is connected to the filter cavity;

[0009] A rigid filter screen, wherein the rigid filter screen is arranged between the receiving cavity and the filter cavity;

[0010] A molecular sieve membrane, wherein the molecular sieve membrane is disposed between the receiving cavity and the filtering cavity and is located below the rigid filtering screen;

[0011] The filter material is at least one of activated carbon and filter cotton, and the filter material is filled in the filter cavity.

[0012] According to the utility model, a filter suitable for essential oil extraction also includes: a flow guide structure, wherein:

[0013] The guide structure is arranged inside the filter unit, and the guide structure includes a central column and a plurality of guide fins. The central column is extended along the height direction of the filter unit, and the plurality of guide fins are arranged at intervals along the circumferential direction of the central column and connected to the outer periphery of the central column. The filter material is filled between adjacent guide fins.

[0014] According to a filter suitable for essential oil extraction provided by the utility model, the central column has a central hole penetrating along its axial direction, and two ends of the central hole are respectively connected to the receiving cavity and the accommodating cavity.

[0015] According to a filter suitable for essential oil extraction provided by the utility model, a plurality of protrusions are provided on the inner wall of the support unit, the plurality of protrusions correspond one-to-one to the positions of the plurality of guide fins, and the plurality of guide fins abut against the protrusions one-to-one in the height direction of the support unit.

[0016] According to a filter suitable for essential oil extraction provided by the utility model, the receiving unit is constructed as a funnel-shaped structure, and the receiving unit includes a receiving bin and a receiving tube, the receiving tube is connected to the top of the receiving bin, the receiving cavity is located in the receiving bin, the essential oil inlet is located at one end of the receiving tube away from the receiving bin, and the bottom of the receiving bin has an opening that can be connected to the filter unit.

[0017] According to a filter suitable for essential oil extraction provided by the utility model, the filter unit is constructed as a cylindrical structure.

[0018] According to a filter suitable for essential oil extraction provided by the utility model, the support unit is constructed as a funnel-shaped structure, and the support unit includes a accommodating bin and an output pipe, the output pipe is connected to the bottom of the accommodating bin, the accommodating cavity is located in the accommodating bin, the essential oil outlet is located at one end of the output pipe away from the accommodating bin, and the top of the accommodating bin has an opening that can be connected to the filter unit.

[0019] The filter suitable for essential oil extraction provided by the utility model comprises: a receiving unit, a filtering unit, a supporting unit, a rigid filter mesh, a molecular sieve membrane and a filtering material. When filtering the essential oil, the filter can filter the essential oil three times with the help of the rigid filter mesh, the molecular sieve membrane and the filtering material, which can not only remove lipid compounds such as plant wax in the essential oil, but also remove other impurities, thereby improving the extraction effect, enhancing the quality of the essential oil, and obtaining essential oil with higher purity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the structure of a filter suitable for essential oil filtration according to one embodiment of the utility model.

[0022] Figure 2 yes Figure 1 A schematic structural diagram of another perspective of the filter shown in FIG.

[0023] Figure 3 yes Figure 1 Schematic diagram of the partial structure of the filter shown in .

[0024] Figure 4 yes Figure 3 Schematic diagram of another perspective of the partial structure of the filter shown in .

[0025] Figure 5 yes Figure 1 A top view of the support unit of the filter shown in FIG.

[0026] Reference numerals:

[0027] 10. Receiving unit; 11. Essential oil inlet; 12. Receiving bin; 13. Receiving tube; 20. Filter unit; 30. Support unit; 31. Essential oil outlet; 32. Bump; 33. Accommodating bin; 34. Output tube; 40. Rigid filter screen; 50. Molecular sieve membrane; 60. Guide structure; 61. Center column; 62. Guide fin. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In one embodiment of the utility model, a filter suitable for essential oil extraction is provided, wherein a rigid filter screen, a molecular sieve membrane and a filter material are provided in the filter, which can filter the essential oil by graded filtration, thereby avoiding the loss of the essential oil during the purification process, improving the purity of the essential oil and improving the extraction effect. Figures 1 to 5 The filter suitable for essential oil extraction in this embodiment is further described as shown.

[0030] Specifically, if Figures 1 to 4 As shown, the filter suitable for essential oil extraction in this embodiment includes: a receiving unit 10, a filtering unit 20, a supporting unit 30, a rigid filtering net 40, a molecular sieve membrane 50 and a filtering material.

[0031] Among them, a receiving cavity is arranged inside the receiving unit 10, an essential oil inlet 11 is arranged on the top of the receiving unit 10, and the essential oil inlet 11 is connected to the receiving cavity; the filtering unit 20 is constructed as a cylindrical structure, a filtering cavity is arranged inside the filtering unit 20, the filtering unit 20 is arranged at the bottom of the receiving unit 10, and the filtering cavity is connected to the receiving cavity; a containing cavity is arranged inside the supporting unit 30, an essential oil outlet 31 is arranged at the bottom of the supporting unit 30, and the containing cavity is connected to the essential oil outlet 31, the supporting unit 30 is arranged at the bottom of the filtering unit 20, and the containing cavity is connected to the filtering cavity; a rigid filter mesh 40 is arranged between the receiving cavity and the filtering cavity; a molecular sieve membrane 50 is arranged between the receiving cavity and the filtering cavity, and is located below the rigid filter mesh 40; the filtering material is at least one of activated carbon and filter cotton, and the filtering material is filled in the filtering cavity.

[0032] Exemplarily, the receiving unit 10 can be made of materials such as metal, plastic or glass, and the receiving unit 10 has a cavity inside, which is the receiving cavity, and the top of the receiving unit 10 is provided with an opening connected to the cavity, which is the essential oil inlet 11. External essential oil can enter the receiving cavity through the essential oil inlet 11. In one embodiment, the receiving unit 10 can be configured as an inverted funnel-shaped structure.

[0033] Exemplarily, the filter unit 20 can be made of metal, plastic, glass or other materials, the receiving unit 10 has a cavity inside, which is the filter cavity, the top of the filter unit 20 can be sealed and connected to the bottom of the receiving unit 10, the receiving cavity can be connected to the filter cavity, and the essential oil entering the receiving cavity can enter the filter cavity. In one embodiment, the filter unit 20 can be configured as a cylindrical structure.

[0034] In one embodiment, Figure 1 and Figure 2 As shown, the filter unit 20 is constructed as a cylindrical structure.

[0035] For example, the filter unit 20 may be configured as a cylindrical structure having a certain length, and both ends of the filter unit 20 in the length direction may be connected to the receiving unit 10 and the supporting unit 30 respectively.

[0036] It can be understood that by configuring the filter unit 20 to be a cylindrical structure, more filter materials can be placed in the filter unit 20 and the filter efficiency can be improved.

[0037] Exemplarily, the support unit 30 can be made of metal, plastic, glass or other materials, the receiving unit 10 has a cavity inside, the cavity is the accommodating cavity, and the bottom of the support unit 30 is provided with an opening connected to the cavity, the opening is the essential oil outlet 31. The support unit 30 is sealed and connected to the bottom of the filter unit 20, the filter cavity is connected to the accommodating cavity, the essential oil in the filter cavity can enter the accommodating cavity, and can leave the filter through the outlet.

[0038] Exemplarily, the rigid filter screen 40 can be a mesh structure made of metal, which is fixedly arranged between the receiving unit 10 and the filtering unit 20, and is located between the receiving cavity and the filtering cavity. When the essential oil enters the filtering cavity from the receiving cavity, the essential oil needs to pass through the rigid filter screen 40. At this time, the rigid filter screen 40 can perform coarse filtering on the essential oil to prevent most lipid compounds such as plant waxes from entering the filtering cavity.

[0039] For example, the molecular sieve membrane 50 is a new type of membrane material that can achieve molecular sieving. It has a pore size that is comparable to the molecular size and uniform, ion exchange performance, high temperature thermal stability, excellent shape-selective catalytic performance, and is easy to be modified, and has a variety of different types and different structures to choose from. It is an ideal membrane separation and membrane catalysis material. After the essential oil passes through the rigid filter 40, it needs to pass through the molecular sieve membrane 50 again. At this time, the molecular sieve membrane 50 can filter the essential oil again to avoid filtering some impurities in the essential oil and prevent these impurities from entering the filter cavity.

[0040] During actual filtration, a suitable molecular sieve membrane 50 may be selected according to the characteristics of the essential oil.

[0041] Exemplarily, the filter material can be activated carbon, filter cotton, or a combination of the two, and the filter material is fully filled in the filter cavity. When the essential oil enters the filter cavity, the filter material can filter the essential oil again to fully filter the impurities in the essential oil.

[0042] In actual use, when filtering the essential oil of the supercritical carbon dioxide extraction experimental system with the filter suitable for essential oil extraction in this embodiment, a suitable molecular sieve membrane 50 and filter material can be selected according to the characteristics of the essential oil, and then the essential oil discharge port of the supercritical carbon dioxide extraction experimental system can be connected to the essential oil inlet 11 of the receiving unit 10. At this time, the essential oil from the supercritical carbon dioxide extraction experimental system can directly enter the receiving cavity of the receiving unit 10, and pass through the rigid filter 40, the molecular sieve membrane 50 and the filter material in turn to achieve filtration. Finally, the fully filtered essential oil can leave through the essential oil outlet 31 of the support unit 30. After the essential oil extraction is completed, the filter can be cleaned with ethanol in combination with the agent pump carried by the experimental system for easy reuse.

[0043] Therefore, through the filter suitable for essential oil extraction in this embodiment, when filtering the essential oil, the filter can filter the essential oil three times with the help of the rigid filter mesh 40, the molecular sieve membrane 50 and the filter material, which can not only remove lipid compounds such as plant wax in the essential oil, but also remove other impurities, thereby improving the extraction effect, enhancing the quality of the essential oil, and obtaining essential oil with higher purity.

[0044] Further, in this embodiment, if Figure 3 and Figure 4 As shown, the filter further includes: a flow guiding structure 60 .

[0045] Among them, the guide structure 60 is arranged inside the filter unit 20, and the guide structure 60 includes a central column 61 and a plurality of guide fins 62. The central column 61 is extended along the height direction of the filter unit 20, and the plurality of guide fins 62 are arranged at intervals along the circumferential direction of the central column 61 and connected to the outer periphery of the central column 61, and the filter material is filled between adjacent guide fins 62.

[0046] Exemplarily, the center column 61 and the guide fins 62 can extend from the top to the bottom of the filter cavity along the height direction of the filter unit 20. The number of guide fins 62 can be three to five. The three to five guide fins 62 can be spaced apart along the circumferential direction of the center column 61, and a cavity is formed between two adjacent guide fins 62, and the filter material is filled in the cavity.

[0047] In actual use, when the essential oil enters the filter cavity, the essential oil can enter the compartment and flow in the filter material. At this time, each compartment is formed as an independent space, and the essential oil can be filtered separately, which can avoid the lateral diffusion of the essential oil, thereby increasing the circulation speed of the essential oil in the filter unit 20.

[0048] Further, in one embodiment, the center column 61 has a center hole penetrating along its axial direction, and two ends of the center hole are respectively connected to the receiving cavity and the accommodating cavity.

[0049] Exemplarily, the central column 61 may be constructed as a long tubular structure, and the interior of the central column 61 has a through hole, which is the central hole, and the receiving cavity may be connected to the accommodating cavity via the central hole.

[0050] In actual use, the circulation speed of essential oil in the filter material may be too slow, causing the essential oil to be retained in the filter material and form a blockage. At this time, the essential oil filtered through the rigid filter mesh 40 and the molecular sieve membrane 50 can enter the central hole, flow directly to the containing cavity, and leave the filter through the essential oil outlet 31.

[0051] Through the above-mentioned configuration, it is possible to prevent the essential oil from being retained in the filter material to form a blockage, and the flow rate of the essential oil in the filter unit 20 can be increased.

[0052] Further, in one embodiment, if Figure 5 As shown, the inner wall of the support unit 30 is provided with a plurality of protrusions 32 , and the positions of the plurality of protrusions 32 correspond one-to-one to the positions of the plurality of guide fins 62 , and the plurality of guide fins 62 abut against the protrusions 32 one-to-one in the height direction of the support unit 30 .

[0053] Exemplarily, the protrusions 32 can be arranged at intervals on the inner wall of the support unit 30 along the circumferential direction of the support unit 30, and the positions of the protrusions 32 and the guide fins 62 correspond one-to-one. For example, when the number of the guide fins 62 is three, the number of the protrusions 32 is also three, and in the height direction of the support unit 30, the bottom of the guide fins 62 can abut against the protrusions 32 one-to-one.

[0054] By providing the protrusion 32 , the guide fin 62 can be positioned in the filter unit 20 .

[0055] Optionally, a snap-fit ​​groove may be provided on the protrusion 32 , and the bottom of the guide fin 62 may be snap-fitted into the snap-fit ​​groove, thereby preventing the guide fin 62 from becoming loose.

[0056] Furthermore, in one embodiment, the inner wall of the receiving unit 10 is provided with a plurality of pressing blocks, the plurality of pressing blocks correspond to the positions of the plurality of guide fins 62 one by one, and the plurality of pressing blocks abut against the guide fins 62 one by one in the height direction of the receiving unit 10.

[0057] Exemplarily, the pressing blocks can be arranged at intervals on the inner wall of the receiving unit 10 along the circumferential direction of the receiving unit 10, and the positions of the pressing blocks correspond one-to-one to the guide fins 62. For example, when the number of the guide fins 62 is three, the number of the pressing blocks is also three, and in the height direction of the receiving unit 10, the protrusions 32 can abut against the tops of the guide fins 62 one-to-one.

[0058] In the above arrangement, the guide fin 62 is sandwiched between the protrusion 32 and the pressing block, so that the guide structure 60 can be effectively fixed in the filter unit 20 .

[0059] In one embodiment, the rigid filter screen 40 and the molecular sieve membrane 50 may be disposed between the pressing block and the flow guiding structure 60 , and the rigid filter screen 40 and the molecular sieve membrane 50 may be fixed by clamping between the pressing block and the flow guiding structure 60 .

[0060] In one embodiment, Figure 1 and Figure 2 As shown, the receiving unit 10 is constructed as a funnel-shaped structure, and the receiving unit 10 includes a receiving bin 12 and a receiving tube 13, the receiving tube 13 is connected to the top of the receiving bin 12, the receiving cavity is located in the receiving bin 12, the essential oil inlet 11 is located at one end of the receiving tube 13 away from the receiving bin 12, and the bottom of the receiving bin 12 has an opening that can be connected to the filtering unit 20.

[0061] Exemplarily, the receiving bin 12 can be constructed as a conical structure with the tip facing upward or a hemispherical shell with an opening facing downward. For example, the receiving bin 12 in the present embodiment is constructed as a hemispherical shell with an opening facing downward. The interior of the receiving bin 12 has a cavity, which is the receiving cavity. The bottom of the receiving bin 12 has an opening, which can be sealed and connected to the filter unit 20. The top of the receiving bin 12 has a through hole, one end of the receiving tube 13 is connected to the through hole, and the other end of the receiving tube 13 extends toward a side away from the receiving bin 12. The essential oil inlet 11 is located at the other end of the receiving tube 13.

[0062] In actual use, after the essential oil enters the receiving chamber through the essential oil inlet 11, the essential oil can be temporarily stored due to the effective filtering speed. Moreover, the essential oil can diffuse laterally and can contact the rigid filter 40 in a larger range to achieve filtering.

[0063] In one embodiment, Figure 1 and Figure 2As shown, the support unit 30 is constructed as a funnel-shaped structure, and the support unit 30 includes a accommodating bin 33 and an output pipe 34, the output pipe 34 is connected to the bottom of the accommodating bin 33, the accommodating cavity is located in the accommodating bin 33, the essential oil outlet 31 is located at one end of the output pipe 34 away from the accommodating bin 33, and the top of the accommodating bin 33 has an opening that can be connected to the filter unit 20.

[0064] Exemplarily, the accommodating chamber 33 can be constructed as a conical structure with the tip facing downward or a hemispherical shell with an opening facing upward. For example, the accommodating chamber 33 in the present embodiment is constructed as a hemispherical shell with an opening facing upward. The interior of the accommodating chamber 33 has a cavity, which is the accommodating chamber. The top of the accommodating chamber 33 has an opening, which can be sealed and connected to the filter unit 20. The bottom of the accommodating chamber 33 has a through hole, one end of the output pipe 34 is connected to the through hole, and the other end of the output pipe 34 extends toward a side away from the accommodating chamber 33. The essential oil outlet 31 is located at the other end of the output pipe 34.

[0065] In actual use, after the essential oil passes through the filter unit 20 and enters the accommodating chamber, the essential oil can be temporarily stored and then discharged through the essential oil outlet 31 .

[0066] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A filter suitable for essential oil extraction, characterized in that: include: A receiving unit, wherein a receiving cavity is disposed inside the receiving unit, an essential oil inlet is disposed on the top of the receiving unit, and the essential oil inlet is connected to the receiving cavity; A filter unit, wherein the filter unit is constructed as a cylindrical structure, a filter cavity is arranged inside the filter unit, the filter unit is arranged at the bottom of the receiving unit, and the filter cavity is connected to the receiving cavity; A support unit, wherein a receiving cavity is disposed inside the support unit, an essential oil outlet is disposed at the bottom of the support unit, the receiving cavity is connected to the essential oil outlet, the support unit is disposed at the bottom of the filter unit, and the receiving cavity is connected to the filter cavity; A rigid filter screen, wherein the rigid filter screen is arranged between the receiving cavity and the filter cavity; A molecular sieve membrane, wherein the molecular sieve membrane is disposed between the receiving cavity and the filtering cavity and is located below the rigid filtering screen; The filter material is at least one of activated carbon and filter cotton, and the filter material is filled in the filter cavity.

2. The filter suitable for essential oil extraction according to claim 1, characterized in that: Also includes: diversion Structure, where The guide structure is arranged inside the filter unit, and the guide structure includes a central column and a plurality of guide fins. The central column is extended along the height direction of the filter unit, and the plurality of guide fins are arranged at intervals along the circumferential direction of the central column and connected to the outer periphery of the central column. The filter material is filled between adjacent guide fins.

3. The filter suitable for essential oil extraction according to claim 2, characterized in that: The central column has a central hole penetrating along its axial direction, and two ends of the central hole are respectively connected to the receiving cavity and the accommodating cavity.

4. The filter suitable for essential oil extraction according to claim 2, characterized in that: The inner wall of the support unit is provided with a plurality of protrusions, the plurality of protrusions correspond to the positions of the plurality of guide fins one by one, and the plurality of guide fins abut against the protrusions one by one in the height direction of the support unit.

5. The filter suitable for essential oil extraction according to claim 1, characterized in that: The receiving unit is constructed as a funnel-shaped structure, comprising a receiving bin and a receiving tube, wherein the receiving tube is connected to the top of the receiving bin, the receiving cavity is located in the receiving bin, the essential oil inlet is located at one end of the receiving tube away from the receiving bin, and the bottom of the receiving bin has an opening that can be connected to the filtering unit.

6. The filter suitable for essential oil extraction according to claim 1, characterized in that: The support unit is constructed as a funnel-shaped structure, comprising a storage bin and an output pipe, wherein the output pipe is connected to the bottom of the storage bin, the storage cavity is located in the storage bin, the essential oil outlet is located at one end of the output pipe away from the storage bin, and the top of the storage bin has an opening that can be connected to the filter unit.

Images