Multistage physical refining equipment for olive oil

By using nitrogen cooling and a multi-stage filtration system to process olive oil, the problem of oxidation caused by temperature during the filtration process is solved, achieving efficient removal of impurities and moisture and ensuring the quality of the olive oil.

CN224485255UActive Publication Date: 2026-07-14TENONA (FUJIAN) TRADING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TENONA (FUJIAN) TRADING CO LTD
Filing Date
2025-08-18
Publication Date
2026-07-14

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Abstract

The utility model relates to the technical field of olive oil, concretely is olive oil multistage physical filter equipment, including filter box, the top of filter box installs the nitrogen cooling assembly for controlling temperature, the nitrogen cooling assembly includes the nitrogen cooling box fixed mounting at the top of filter box, the top of nitrogen cooling box is fixedly installed with nitrogen perfusion pipe, nitrogen perfusion pipe's inside fixed mounting has nitrogen valve, the inside fixed mounting of nitrogen cooling box has the cooling fin, the side of nitrogen cooling box is fixedly installed with nitrogen delivery pipe. The utility model discloses through nitrogen cooling assembly can reduce the temperature of olive oil, reduce the oxidation of olive oil, reduce the loss of aromatic substance, through the circulation component can recycle the nitrogen gas in the inside of olive oil, reduce the loss of nitrogen gas.
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Description

Technical Field

[0001] This utility model relates to the field of olive oil technology, specifically to a multi-stage physical filtration device for olive oil. Background Technology

[0002] Multi-stage physical filtration equipment is a crucial step in the production of high-quality extra virgin olive oil or refined olive oil (especially through physical refining). Its core objective is to gradually and efficiently remove suspended solids, colloids, water, and extremely small particles from the oil through multiple physical barriers without using chemical solvents, thereby obtaining clear, stable, flavorful olive oil that meets food safety standards.

[0003] A search revealed an olive oil filtration device with publication number CN213885300U, comprising an outer cylinder, an inner filter cylinder installed inside the outer cylinder, and a drive device for rotating the inner filter cylinder. The bottom of the inner filter cylinder is a tapered settling section that tapers downwards. A filter window is provided on the wall of the inner filter cylinder, located above the settling section, and a filter screen I is installed on the filter window. In this invention, the inner filter cylinder is driven to rotate, causing the olive oil to flow outwards centrifugally and pass through the filter screen I at the filter window into the outer cylinder. Solid impurities settle at the center of the inner filter cylinder. This structure facilitates solid-liquid separation, and the settling section facilitates the settling and aggregation of solid impurities. The settling section also facilitates the separation of solid impurities from the filter window, improving the filtration effect.

[0004] In the aforementioned technical solution, an olive oil filtration device is driven to rotate through an inner filter cylinder, causing the olive oil to flow outwards centrifugally and pass through the filter screen I at the filter window into the outer cylinder. Solid impurities settle at the center of the inner filter cylinder. This structure facilitates solid-liquid separation, and the settling section facilitates the settling and aggregation of solid impurities. The settling section also facilitates the separation of solid impurities from the filter window, improving the filtration effect. However, the temperature of the olive oil during the filtration process is not addressed. High temperatures accelerate oxidation, damaging volatile aroma components and heat-sensitive phenols, vitamin E, and other nutrients. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Given that the existing technology does not address the temperature of the olive oil during the filtration process, high temperatures can accelerate oxidation and damage volatile aroma components, heat-sensitive phenols, vitamin E, and other nutrients.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A multi-stage physical filtration device for olive oil includes a filter box, the top of which is equipped with a nitrogen cooling assembly for controlling temperature and reducing oxidation. The nitrogen cooling assembly includes a nitrogen cooling box fixedly installed at the top of the filter box.

[0009] A nitrogen injection pipe is fixedly installed at the top of the nitrogen cooling box, a nitrogen valve is fixedly installed inside the nitrogen injection pipe, a cooling fin is fixedly installed inside the nitrogen cooling box, and a nitrogen delivery pipe is fixedly installed on the side of the nitrogen cooling box.

[0010] As a further improvement of this utility model: an olive oil conveying pipe is fixedly installed on the side of the filter box, and an olive oil output pipe is fixedly installed on the side of the filter box.

[0011] As a further improvement of this utility model: a circulation assembly is installed at the top of the filter box, the circulation assembly includes an air pump fixedly installed at the top of the filter box, and a recovery pipe that penetrates the inside of the olive oil output pipe is fixedly installed on the side of the air pump.

[0012] As a further improvement of this utility model: a gas membrane is fixedly installed inside the recovery pipe, and a circulation pipe that penetrates the inside of the nitrogen cooling box is fixedly installed on the side of the gas pump.

[0013] As a further embodiment of this utility model: a coarse filtration assembly is installed inside the filter box. The coarse filtration assembly includes a coarse filter plate fixedly installed inside the filter box. A coarse filter port is opened inside the coarse filter plate. A coarse filter groove is opened on the side of the coarse filter plate. A coarse filter screen is fixedly installed inside the coarse filter groove.

[0014] As a further embodiment of this utility model: a fine filter assembly is installed both inside and at the top of the filter box. The fine filter assembly includes a fine filter plate fixedly installed inside the filter box, and a fine filter groove is provided on the side of the fine filter plate.

[0015] As a further embodiment of this utility model: a fine filter motor is fixedly installed at the top of the filter box, a fine filter shaft is fixedly installed at the output end of the fine filter motor, a fine filter fixing block is fixedly installed on the outside of the fine filter shaft, and a fine filter screen is fixedly installed at the bottom end of the fine filter fixing block.

[0016] As a further embodiment of this utility model: a fine filtration assembly is installed inside the filter box. The fine filtration assembly includes a fine filtration plate fixedly installed inside the filter box. A fine filtration port is opened inside the fine filtration plate. A fine filtration groove is opened on the side of the fine filtration plate. A molecular membrane is fixedly installed inside the fine filtration groove.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model can reduce the temperature of olive oil by using a nitrogen cooling component, thereby reducing the oxidation of olive oil and the loss of aromatics. The circulation component can recover the nitrogen inside the olive oil, thereby reducing nitrogen loss.

[0019] 2. This utility model can remove large particulate impurities visible to the naked eye through the coarse filtration component, protecting subsequent precision equipment. The fine filtration component can remove even smaller solid particles, some colloidal substances, and most of the free water. The fine filtration component can remove the smallest particles, residual colloids, and any trace amounts of filter aid particles, ensuring that the oil is crystal clear, free of suspended matter, and free of sediment risk. Attached Figure Description

[0020] Figure 1 A schematic diagram of a multi-stage physical filtration system for olive oil.

[0021] Figure 2 A schematic diagram of the internal structure of a multi-stage physical filtration system for olive oil.

[0022] Figure 3 A schematic diagram of the internal cross-sectional structure of a multi-stage physical filtration system for olive oil;

[0023] Figure 4 A schematic diagram of the nitrogen cooling and circulation components of a multi-stage physical filtration system for olive oil.

[0024] Figure 5 A schematic diagram of the fine filtration component structure of a multi-stage physical filtration system for olive oil;

[0025] In the diagram: 1. Filter box; 2. Nitrogen cooling assembly; 21. Nitrogen cooling box; 22. Nitrogen filling pipe; 23. Nitrogen valve; 24. Cooling plate; 25. Nitrogen delivery pipe; 3. Olive oil delivery pipe; 4. Coarse filter assembly; 41. Coarse filter tank; 42. Coarse filter plate; 43. Coarse filter port; 44. Coarse filter screen; 5. Fine filter assembly; 51. Fine filter motor; 52. Fine filter shaft; 53. Fine filter fixing block; 54. Fine filter screen; 55. Fine filter plate; 56. Fine filter tank; 6. Refined filter assembly; 61. Refined filter plate; 62. Refined filter port; 63. Refined filter tank; 64. Molecular membrane; 7. Olive oil output pipe; 8. Circulation assembly; 81. Recovery pipe; 82. Gas membrane; 83. Air pump; 84. Circulation pipe. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0029] Example 1

[0030] Please see Figures 1-4 This is the first embodiment of the present invention.

[0031] This embodiment provides a multi-stage physical filtration device for olive oil, including a filter box 1. A nitrogen cooling assembly 2 for controlling temperature and reducing oxidation is installed at the top of the filter box 1. The nitrogen cooling assembly 2 includes a nitrogen cooling box 21 fixedly installed at the top of the filter box 1.

[0032] A nitrogen injection pipe 22 is fixedly installed at the top of the nitrogen cooling box 21. A nitrogen valve 23 is fixedly installed inside the nitrogen injection pipe 22. A cooling fin 24 is fixedly installed inside the nitrogen cooling box 21. A nitrogen delivery pipe 25 is fixedly installed on the side of the nitrogen cooling box 21.

[0033] Specifically, an olive oil delivery pipe 3 is fixedly installed on the side of the filter box 1, an olive oil output pipe 7 is fixedly installed on the side of the filter box 1, a circulation assembly 8 is installed at the top of the filter box 1, the circulation assembly 8 includes an air pump 83 fixedly installed at the top of the filter box 1, a recovery pipe 81 that penetrates the olive oil output pipe 7 is fixedly installed on the side of the air pump 83, a gas membrane 82 is fixedly installed inside the recovery pipe 81, and a circulation pipe 84 that penetrates the nitrogen cooling box 21 is fixedly installed on the side of the air pump 83.

[0034] Furthermore, nitrogen gas inside the olive oil can be recovered through the circulation component 8, reducing nitrogen loss.

[0035] In use, air can be supplied into the nitrogen cooling box 21 through the nitrogen filling pipe 22, the state of the nitrogen filling pipe 22 can be controlled through the nitrogen valve 23, the nitrogen can be cooled through the cooling plate 24, the cold nitrogen and olive oil in the olive oil delivery pipe 3 can be delivered into the filter box 1 through the nitrogen delivery pipe 25, the air pump 83 recovers the nitrogen in the olive oil output pipe 7 through the recovery pipe 81, the olive oil in the gas is filtered through the gas membrane 82, and the recovered nitrogen is injected back into the nitrogen cooling box 21 through the circulation pipe 84 to reduce consumption.

[0036] In summary, the nitrogen cooling component 2 can lower the temperature of olive oil, reduce its oxidation, and minimize the loss of aromatic compounds. The circulation component 8 can recover nitrogen from the olive oil, further reducing nitrogen loss.

[0037] Example 2

[0038] Please see Figure 1 , Figure 2 , Figure 3 , Figure 5 This is the second embodiment of the present utility model.

[0039] Specifically, a coarse filter assembly 4 is installed inside the filter box 1. The coarse filter assembly 4 includes a coarse filter plate 42 fixedly installed inside the filter box 1. A coarse filter port 43 is opened inside the coarse filter plate 42. A coarse filter groove 41 is opened on the side of the coarse filter plate 42. A coarse filter screen 44 is fixedly installed inside the coarse filter groove 41.

[0040] Furthermore, the coarse filter component 4 can remove large particulate impurities visible to the naked eye, protecting subsequent precision equipment.

[0041] Specifically, a fine filter assembly 5 is installed inside and at the top of the filter box 1. The fine filter assembly 5 includes a fine filter plate 55 fixedly installed inside the filter box 1. A fine filter groove 56 is opened on the side of the fine filter plate 55. A fine filter motor 51 is fixedly installed at the top of the filter box 1. A fine filter shaft 52 is fixedly installed at the output end of the fine filter motor 51. A fine filter fixing block 53 is fixedly installed on the outside of the fine filter shaft 52. A fine filter screen 54 is fixedly installed at the bottom end of the fine filter fixing block 53.

[0042] Furthermore, the fine filter component 5 can remove even finer solid particles, some colloidal substances, and most of the free water.

[0043] Specifically, a fine filtration assembly 6 is installed inside the filter box 1. The fine filtration assembly 6 includes a fine filtration plate 61 fixedly installed inside the filter box 1. A fine filtration port 62 is opened inside the fine filtration plate 61. A fine filtration groove 63 is opened on the side of the fine filtration plate 61. A molecular membrane 64 is fixedly installed inside the fine filtration groove 63.

[0044] Furthermore, the fine filtration component 6 can remove the smallest particles, residual colloids, and any trace amounts of filter aid particles, ensuring that the oil is crystal clear, free of suspended matter, and free of sediment risk.

[0045] In use, a coarse filter plate 42 forms a coarse filter tank 41, and a coarse filter screen 44 is used to coarsely filter the olive oil. The coarsely filtered olive oil is then sent through the coarse filter port 43 into the fine filter tank 56 formed by the fine filter plate 55. The fine filter motor 51 drives the fine filter shaft 52 to rotate, which in turn drives the fine filter fixing block 53 to rotate, thereby driving the fine filter screen 54 to rotate. During the rotation, the fine filter screen 54 filters the filtered olive oil again. The olive oil is then introduced into the fine filter tank 63 formed by the fine filter plate 61 through the fine filter port 62. Impurities inside the olive oil are filtered through the molecular membrane 64, and finally, the olive oil is output through the olive oil output pipe 7.

[0046] In summary, the coarse filter assembly 4 can remove large particulate impurities visible to the naked eye, protecting subsequent precision equipment. The fine filter assembly 5 can remove even smaller solid particles, some colloidal substances, and most of the free water. The fine filter assembly 6 can remove the smallest particles, residual colloids, and any trace amounts of filter aid particles, ensuring that the oil is crystal clear, free of suspended matter, and free of sediment risk.

[0047] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0048] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0049] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A multi-stage physical filtration device for olive oil, comprising a filter box (1), characterized in that: The top of the filter box (1) is equipped with a nitrogen cooling assembly (2) for controlling temperature and reducing oxidation. The nitrogen cooling assembly (2) includes a nitrogen cooling box (21) fixedly installed on the top of the filter box (1). A nitrogen injection pipe (22) is fixedly installed at the top of the nitrogen cooling box (21), a nitrogen valve (23) is fixedly installed inside the nitrogen injection pipe (22), a cooling plate (24) is fixedly installed inside the nitrogen cooling box (21), and a nitrogen delivery pipe (25) is fixedly installed on the side of the nitrogen cooling box (21).

2. The multi-stage physical filtration equipment for olive oil according to claim 1, characterized in that: An olive oil delivery pipe (3) is fixedly installed on the side of the filter box (1), and an olive oil output pipe (7) is fixedly installed on the side of the filter box (1).

3. The multi-stage physical filtration equipment for olive oil according to claim 1, characterized in that: The top of the filter box (1) is equipped with a circulation assembly (8), which includes an air pump (83) fixedly installed at the top of the filter box (1). A recovery pipe (81) is fixedly installed on the side of the air pump (83) and passes through the inside of the olive oil output pipe (7).

4. The multi-stage physical filtration equipment for olive oil according to claim 3, characterized in that: A gas membrane (82) is fixedly installed inside the recovery pipe (81), and a circulation pipe (84) that runs through the inside of the nitrogen cooling box (21) is fixedly installed on the side of the gas pump (83).

5. The multi-stage physical filtration equipment for olive oil according to claim 1, characterized in that: The filter box (1) is equipped with a coarse filter assembly (4). The coarse filter assembly (4) includes a coarse filter plate (42) fixedly installed inside the filter box (1). The coarse filter plate (42) has a coarse filter port (43) inside. The coarse filter plate (42) has a coarse filter groove (41) on its side. A coarse filter screen (44) is fixedly installed inside the coarse filter groove (41).

6. The multi-stage physical filtration equipment for olive oil according to claim 1, characterized in that: The filter box (1) is equipped with a fine filter assembly (5) inside and at the top. The fine filter assembly (5) includes a fine filter plate (55) fixedly installed inside the filter box (1). The fine filter plate (55) has a fine filter groove (56) on its side.

7. The multi-stage physical filtration equipment for olive oil according to claim 6, characterized in that: A fine filter motor (51) is fixedly installed at the top of the filter box (1), a fine filter shaft (52) is fixedly installed at the output end of the fine filter motor (51), a fine filter fixing block (53) is fixedly installed on the outside of the fine filter shaft (52), and a fine filter screen (54) is fixedly installed at the bottom end of the fine filter fixing block (53).

8. The multi-stage physical filtration equipment for olive oil according to claim 1, characterized in that: The filter box (1) is equipped with a fine filtration assembly (6). The fine filtration assembly (6) includes a fine filtration plate (61) fixedly installed inside the filter box (1). The fine filtration plate (61) has a fine filtration port (62) inside. The fine filtration plate (61) has a fine filtration groove (63) on its side. A molecular membrane (64) is fixedly installed inside the fine filtration groove (63).

Citation Information

Patent Citations

  • Olive oil filtering device

    CN213885300U