Preparation method and preparation device of blend oil of peony seed oil

Abstract

The invention relates to the technical field of edible oil processing, and particularly discloses a preparation method and a preparation device of blend oil of peony seed oil. The peony seed oil composition is prepared from 30-45 parts of peony seed oil, 20-30 parts of camellia oil, 15-25 parts of walnut oil, 0.2-2 parts of natural vitamin E and 0.1-0.5 part of rosemary extract. And nitrogen is charged for fresh keeping after net vacuum deodorization. The invention further provides a filtering tank which comprises a filtering plate and two sets of supporting rods capable of moving up and down, one set of supporting rods are located above the filtering plate, the other set of supporting rods are located below the filtering plate, each supporting rod is provided with a conical block and a pricking needle, and each pricking needle corresponds to one filtering hole. The health-care beverage is balanced in nutrition, harmonious in flavor and high in oxidation resistance and has a health-care function, and the alpha-linolenic acid and other active ingredients are beneficial to regulating blood fat and enhancing immunity, so that the health-care beverage is suitable for long-term use. The filtering tank disclosed by the invention can ensure that the filtering holes are kept unblocked.

Description

Technical Field

[0001] The invention relates to the technical field of edible oil processing, in particular to a method and a device for preparing peony seed oil blended oil. Background Art

[0002] With consumers increasingly prioritizing healthy eating, demand for high-end blended oils continues to grow. Peony seed oil, a natural, green edible oil rich in unsaturated fatty acids such as α-linolenic acid, linoleic acid, and oleic acid, as well as numerous bioactive substances, possesses exceptionally high nutritional value. However, single-use peony seed oil has limitations in flavor, stability, and functionality. Therefore, developing a new blended oil based on peony seed oil combined with other high-quality oils and functional ingredients is crucial to meeting consumer demands for health, nutrition, and flavor. Summary of the Invention

[0003] In order to overcome the defects of the prior art, the present invention provides a method and a device for preparing a blended oil of peony seed oil.

[0004] The present invention is achieved through the following technical solutions: The method for preparing peony seed oil blended oil is characterized by comprising the following steps: 1) Raw material pretreatment: Peony seeds: Select plump, mold-free peony seeds, shell them, separate the kernel from the shell, and dry them at low temperature until the moisture content is ≤8%; Camellia seeds and walnuts: Wash and dry them separately, and shell the camellia seeds; 2) Using low-temperature extraction technology with subcritical fluid as solvent, extraction is carried out at room temperature and a pressure of 0.35-0.45 MPa to obtain peony seed crude oil, which is then refined and filtered to obtain peony seed oil; The cold pressing process is used to extract camellia seed crude oil and walnut seed crude oil, which are then refined and filtered to obtain camellia oil and walnut oil respectively; 3) Add the above-mentioned peony seed oil, camellia oil, and walnut oil in a ratio of 30-45 parts by weight, 20-30 parts by weight, and 15-25 parts by weight to a mixing tank and mix uniformly with the aid of an ultrasonic device; 4) Add 0.2-2 parts of natural vitamin E and 0.1-0.5 parts of rosemary extract and continue stirring until completely dissolved; 5) Post-treatment: First, vacuum deodorization: Place the blended oil obtained above in a vacuum deodorization device at a temperature of 60-80°C for 20-30 minutes to remove residual odor; Then nitrogen filling is carried out for preservation: the deodorized blended oil is cooled to room temperature, nitrogen is filled into the tank until the pressure inside the tank is 0.05MPa-0.1MPa, and then sealed and packaged.

[0005] The frequency of the ultrasonic device is set to 20 kHz-40 kHz, and the mixing time is 10-15 minutes.

[0006] The preparation device used in the method for making blended oil of peony seed oil includes a filter tank, which includes a tank body, characterized in that a filter plate is provided in the tank body, an oil inlet cylinder at the upper end of the tank body, and the lower end of the oil inlet cylinder is axially and sealedly connected to an oil inlet pipe extending into the bottom of the tank body; a motor is provided at the upper end of the oil inlet cylinder, and a rotating shaft is provided at the output end of the motor, and the rotating shaft and the oil inlet pipe are fixedly connected; a stirring wing is provided at the lower end of the oil inlet pipe, and the stirring wing is located below the filter plate; an oil outlet pipe is provided on the tank body, and the oil outlet pipe is located above the filter plate; the filter plate is provided with a plurality of filter holes, each of the filter holes is provided with a bell mouth, some of the bell mouths are facing upward and some of the bell mouths are facing downward; a sleeve that can move up and down is sleeved on the oil outlet pipe, and a plurality of radially evenly distributed support rods are respectively provided at the upper and lower ends of the sleeve, and the support rods are provided with needles corresponding to the bell mouths; the filter plate is slidably connected to the sleeve.

[0007] A conical block is provided on the support rod, and the needle is installed at the tip of the conical block.

[0008] A cylinder is provided above the motor, and a frame is provided at the output end of the cylinder. The frame extends downward into the tank body and is fixedly connected to the upper end of the sleeve.

[0009] The filter plate is conical.

[0010] The beneficial effects of the present invention are: The invention is nutritionally balanced: in view of the easy oxidation characteristic of peony seed oil, low-temperature extraction technology is used to extract peony seed oil, and camellia oil and walnut oil are processed by cold pressing technology to retain the nutrients in the oil to the maximum extent; a variety of high-quality oils are combined to provide rich unsaturated fatty acids and nutrients such as vitamins and minerals.

[0011] The flavor of the invention is coordinated: through scientific proportioning, the blended oil has the fragrance of peony seed oil, the mellowness of camellia oil and the nutty flavor of walnut oil.

[0012] The invention has strong antioxidant property: the synergistic effect of natural vitamin E and rosemary extract significantly improves the oxidative stability of the blended oil.

[0013] The invention has health care functions: active ingredients such as α-linolenic acid help regulate blood lipids and enhance immunity, and is suitable for long-term use.

[0014] The present invention also provides a filter tank, which is provided with a cone block that moves up and down, so that the needle on the cone block pokes the filter hole, and the cone blocks above and below the filter plate work in turn to keep the filter hole unobstructed and the filtering state is always maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings: Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic cross-sectional view of the present invention; Figure 3 for Figure 2 Schematic diagram of the enlarged structure at A in the middle; Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure in the middle BB direction; Figure 5 for Figure 2 Schematic diagram of the enlarged structure at C in the middle; Figure 6 for Figure 4 Schematic diagram of the enlarged structure at point D in the middle.

[0016] In the figure, 1 is a tank body, 2 is a motor, 3 is a rotating shaft, 4 is an oil inlet cylinder, 5 is an oil inlet pipe, 6 is an air cylinder, 7 is a frame, 8 is a connecting rod, 9 is a stirring wing, 10 is a sleeve, 11 is a supporting rod, 12 is an oil outlet pipe, 13 is a bell mouth, 14 is a conical block, 15 is a needle, 16 is a filter plate, 17 is a sewage pipe, and 18 is a filter hole. DETAILED DESCRIPTION

[0017] The accompanying drawings are specific embodiments of the present invention.

[0018] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0020] Example 1 1) Raw material pretreatment: Peony seeds: Select plump, mold-free peony seeds, shell them, separate the kernel from the shell, and dry them at low temperature until the moisture content is ≤8%; Camellia seeds and walnuts: Wash and dry them separately, and shell the camellia seeds; 2) Using low-temperature extraction technology with subcritical fluid as the solvent, extraction is carried out at room temperature and a pressure of 0.35 MPa to obtain peony seed crude oil, which is then refined and filtered (deacidified, decolorized, and deodorized) to obtain peony seed oil; The cold pressing process is used to extract camellia seed crude oil and walnut seed crude oil, which are then refined and filtered to obtain camellia oil and walnut oil respectively; 3) Adding 45 kg of the peony seed oil, 20 kg of camellia oil, and 25 kg of walnut oil to a mixing tank and uniformly mixing them with the aid of an ultrasonic device; the mixing tank is an ultrasonic mixing tank with a built-in ultrasonic device, the frequency of the ultrasonic device is set to 40 kHz, and the mixing time is 10 minutes; 4) Add 0.2 kg of natural vitamin E and 0.5 kg of rosemary extract and continue stirring until completely dissolved; 5) Post-treatment: First, vacuum deodorization: Place the blended oil obtained above in a vacuum deodorization device at a temperature of 60°C for 30 minutes to remove residual odor; Then nitrogen filling is carried out for preservation: the deodorized blended oil is cooled to room temperature, nitrogen is filled into the tank until the pressure inside the tank reaches 0.05MPa, and the tank is sealed and packaged.

[0021] Example 2 1) Raw material pretreatment: Peony seeds: Select plump, mold-free peony seeds, shell them, separate the kernel from the shell, and dry them at low temperature until the moisture content is ≤8%; Camellia seeds and walnuts: Wash and dry them separately, and shell the camellia seeds; 2) Using low-temperature extraction technology with subcritical fluid as solvent at room temperature and 0.45 MPa pressure to obtain peony seed crude oil, which is then refined and filtered to obtain peony seed oil; The cold pressing process is used to extract camellia seed crude oil and walnut seed crude oil, which are then refined and filtered to obtain camellia oil and walnut oil respectively; 3) Add 30 kg of the peony seed oil, 30 kg of camellia oil, and 15 kg of walnut oil to a mixing tank and mix them uniformly with the aid of an ultrasonic device; the mixing tank is an ultrasonic mixing tank with a built-in ultrasonic device, the frequency of the ultrasonic device is set to 20 kHz, and the mixing time is 15 minutes; 4) Add 2 kg of natural vitamin E and 0.1 kg of rosemary extract and continue stirring until completely dissolved; 5) Post-treatment: First, vacuum deodorization: Place the blended oil obtained above in a vacuum deodorization device at a temperature of 80°C for 20 minutes to remove residual odor; Then nitrogen filling is carried out for preservation: the deodorized blended oil is cooled to room temperature, nitrogen is filled into the tank until the pressure inside the tank reaches 0.1MPa, and the tank is sealed and packaged.

[0022] Example 3 1) Raw material pretreatment: Peony seeds: Select plump, mold-free peony seeds, shell them, separate the kernel from the shell, and dry them at low temperature until the moisture content is ≤8%; Camellia seeds and walnuts: Wash and dry them separately, and shell the camellia seeds; 2) Using low-temperature extraction technology, subcritical fluid as solvent, extraction at room temperature and 0.4 MPa pressure to obtain peony seed crude oil, which is then refined and filtered to obtain peony seed oil; The cold pressing process is used to extract camellia seed crude oil and walnut seed crude oil, which are then refined and filtered to obtain camellia oil and walnut oil respectively; 3) Adding 35 kg of the peony seed oil, 25 kg of camellia oil, and 20 kg of walnut oil to a mixing tank and uniformly mixing them with the aid of an ultrasonic device; the mixing tank is an ultrasonic mixing tank with a built-in ultrasonic device, the frequency of the ultrasonic device is set to 30 kHz, and the mixing time is 12 minutes; 4) Add 1 kg of natural vitamin E and 0.2 kg of rosemary extract and continue stirring until completely dissolved; 5) Post-treatment: First, vacuum deodorization: Place the blended oil obtained above in a vacuum deodorization device at a temperature of 70°C for 25 minutes to remove residual odor; Then nitrogen filling is carried out for preservation: the deodorized blended oil is cooled to room temperature, nitrogen is filled into the tank until the pressure inside the tank reaches 0.07MPa, and the tank is sealed and packaged.

[0023] Example 4 1) Raw material pretreatment: Peony seeds: Select plump, mold-free peony seeds, shell them, separate the kernel from the shell, and dry them at low temperature until the moisture content is ≤8%; Camellia seeds and walnuts: Wash and dry them separately, and shell the camellia seeds; 2) Using low-temperature extraction technology, subcritical fluid as solvent, extraction at room temperature and 0.4 MPa pressure to obtain peony seed crude oil, which is then refined and filtered to obtain peony seed oil; The cold pressing process is used to extract camellia seed crude oil and walnut seed crude oil, which are then refined and filtered to obtain camellia oil and walnut oil respectively; 3) Adding 40 kg of the peony seed oil, 30 kg of camellia oil, and 22 kg of walnut oil to a mixing tank and uniformly mixing them with the aid of an ultrasonic device; the mixing tank is an ultrasonic mixing tank with a built-in ultrasonic device, the frequency of the ultrasonic device is set to 25 kHz, and the mixing time is 15 minutes; 4) Add 1.5 kg of natural vitamin E and 0.4 kg of rosemary extract and continue stirring until completely dissolved; 5) Post-treatment: First, vacuum deodorization: Place the blended oil obtained above in a vacuum deodorization device at a temperature of 65°C for 27 minutes to remove residual odor; Then nitrogen filling is carried out for preservation: the deodorized blended oil is cooled to room temperature, nitrogen is filled into the tank until the pressure inside the tank reaches 0.05MPa, and the tank is sealed and packaged.

[0024] Example 5 1) Raw material pretreatment: Peony seeds: Select plump, mold-free peony seeds, shell them, separate the kernel from the shell, and dry them at low temperature until the moisture content is ≤8%; Camellia seeds and walnuts: Wash and dry them separately, and shell the camellia seeds; 2) Using low-temperature extraction technology, subcritical fluid as solvent, extraction at room temperature and 0.4 MPa pressure to obtain peony seed crude oil, which is then refined and filtered to obtain peony seed oil; The cold pressing process is used to extract camellia seed crude oil and walnut seed crude oil, which are then refined and filtered to obtain camellia oil and walnut oil, respectively. The mixing tank is an ultrasonic mixing tank with a built-in ultrasonic device. The frequency of the ultrasonic device is set at 40kHz and the mixing time is 15 minutes. 3) Add 45 kg of the peony seed oil, 30 kg of camellia oil, and 25 kg of walnut oil to a mixing tank and mix them evenly with the aid of an ultrasonic device; 4) Add 2 kg of natural vitamin E and 0.5 kg of rosemary extract and continue stirring until completely dissolved; 5) Post-treatment: First, vacuum deodorization: Place the blended oil obtained above in a vacuum deodorization device at a temperature of 80°C for 30 minutes to remove residual odor; Then nitrogen filling is carried out for preservation: the deodorized blended oil is cooled to room temperature, nitrogen is filled into the tank until the pressure inside the tank reaches 0.1MPa, and the tank is sealed and packaged.

[0025] The frequency of the ultrasonic device was set to 40 kHz, and the mixing time was 15 minutes.

[0026] Example 6 1) Raw material pretreatment: Peony seeds: Select plump, mold-free peony seeds, shell them, separate the kernel from the shell, and dry them at low temperature until the moisture content is ≤8%; Camellia seeds and walnuts: Wash and dry them separately, and shell the camellia seeds; 2) Using low-temperature extraction technology, subcritical fluid as solvent, extraction at room temperature and 0.4 MPa pressure to obtain peony seed crude oil, which is then refined and filtered to obtain peony seed oil; A cold pressing process is used to extract camellia seed crude oil and walnut seed crude oil, respectively. Camellia oil and walnut oil are obtained after refining and filtration, respectively. The mixing tank is an ultrasonic mixing tank with a built-in ultrasonic device (the same as in the following examples). The frequency of the ultrasonic device is set to 20 kHz, and the mixing time is 10 minutes. 3) Add 30 kg of the peony seed oil, 20 kg of camellia oil, and 15 kg of walnut oil to a mixing tank and mix them evenly with the aid of an ultrasonic device; 4) Add 0.2 kg of natural vitamin E and 0.1 kg of rosemary extract and continue stirring until completely dissolved; 5) Post-treatment: First, vacuum deodorization: Place the blended oil obtained above in a vacuum deodorization device at a temperature of 60°C for 20 minutes to remove residual odor; Then nitrogen filling is carried out for preservation: the deodorized blended oil is cooled to room temperature, nitrogen is filled into the tank until the pressure inside the tank reaches 0.05MPa, and the tank is sealed and packaged.

[0027] like Figures 1 to 6 As shown, the preparation method and preparation device of the peony seed oil blended oil include low-temperature extraction equipment, ultrasonic mixing tank, filter tank, vacuum deodorization device and nitrogen filling preservation system, wherein: The low-temperature extraction equipment includes an extraction tank, a solvent circulation system, a temperature control system, and an extrusion pressure control system. The extraction tank is made of stainless steel and is equipped with a stirring device and a solvent inlet and outlet.

[0028] Function: To achieve efficient extraction of peony seed oil at room temperature and low pressure, avoiding the damage of high temperature to the oil components.

[0029] Ultrasonic mixing tank: It is a double-layer stainless steel structure with a built-in ultrasonic device, a constant temperature control device and a stirring device.

[0030] Function: Apply ultrasonic waves during the blending process to promote the interaction between oil molecules and improve the mixing uniformity.

[0031] Vacuum deodorization device: It consists of a vacuum pump, a deodorizing tank, a condensing system and a control system. The deodorizing tank is made of 316L stainless steel and is equipped with a heating device and a vacuum sensor. Function: Heat blended oil under vacuum conditions to remove volatile odor components and improve product quality.

[0032] Nitrogen filling preservation system: Including nitrogen generator, nitrogen filling pipeline and pressure control valve; Function: Fill the blended oil with nitrogen to isolate oxygen and extend the shelf life.

[0033] The filter tank includes a tank body 1, and a filter plate 16 is provided in the tank body 1. The filter plate 16 can be conical, and the cone top angle cannot be too small, preferably greater than 80°, and preferably close to a right angle, that is, it is fine to be slightly tilted. There are several filter holes 18 on the filter plate 16, and each filter hole 18 has some bell mouths 13 in the upper and lower directions. Part of the bell mouth 13 is located on the lower surface of the filter plate 16, and the other part is located on the upper surface of the filter plate 16.

[0034] A ring sleeve is located at the center of the top of the filter plate 16 and is fixedly connected to the filter plate 16 .

[0035] An oil inlet cylinder 4 is fixedly installed on the upper end of the tank body 1, and an oil inlet pipe 5 is rotatably connected to the lower end of the oil inlet cylinder 4. The oil inlet pipe 5 passes through the tank body 1 and the ring sleeve and then extends into the bottom of the tank body 1.

[0036] A motor 2 is installed at the upper end of the oil inlet cylinder 4, and the output end of the motor 2 is connected to the rotating shaft 3. After the rotating shaft 3 is extended into the oil inlet cylinder 4, it is fixedly connected to the inside of the oil inlet pipe 5. The rotating shaft 3 and the oil inlet pipe 5 can be connected by several connecting rods 8 to facilitate the communication between the oil inlet cylinder 4 and the oil inlet pipe 5.

[0037] A stirring wing 9 is installed at the lower end of the oil inlet pipe 5, and the stirring wing 9 is located below the filter plate 16.

[0038] A sleeve 10 is sleeved on the oil inlet pipe 5, and the sleeve 10 passes through the ring sleeve.

[0039] A cylinder 6 is installed above the motor 2 , and an output end of the cylinder 6 is connected to a frame 7 . The frame 7 extends downward into the tank body 1 and is fixedly connected to the sleeve 10 .

[0040] The frame 7 can be wider, and then the stirring wing 9 is also installed on the oil inlet cylinder 4 above the filter plate 16.

[0041] A number of support rods 11 are radially mounted on the upper and lower ends of the sleeve 10 . The support rods 11 may be further connected by connecting rods, depending on the distribution of the bell mouths 13 .

[0042] like Figure 5 As shown, a plurality of conical blocks 14 are mounted on the support rod 11 , and a needle 15 is mounted at the tip of the conical block 14 . The needle 15 corresponds to the filter hole 18 , and each conical block 14 corresponds to a filter hole 18 .

[0043] The needle 15 can just enter the filter hole 18 to poke the filter hole 18 open, and can also be slightly thinner than the filter hole 18.

[0044] The formation of the cylinder 6 need not be too large, as long as the lancet 15 can be made to poke the filter hole 18 open.

[0045] An oil outlet pipe 12 is installed on the tank body 1 above the filter plate 16 .

[0046] A sewage pipe 17 is provided at the lower end of the tank body 1 .

[0047] The working process is as follows: The mixed oil formed by the mixed peony seed oil, camellia oil and walnut oil enters the oil inlet pipe 5 from the oil inlet cylinder 4, and then enters the bottom of the tank body 1, the motor 2 and the cylinder 6 are turned on, and the stirring wings 9 mix the mixed oil again. The mixed oil is filtered through the filter plate 16 and enters the top of the filter plate 16. The cylinder 6 drives the conical block 14 to move up and down through the frame 7 and the sleeve 10. When the lower conical block 14 blocks its corresponding bell mouth 13, the needle 15 pokes the filter hole 18 at this part, and at the same time the upper conical block 14 leaves its corresponding bell mouth 13, and the mixed oil is poured into the tank body 1. The mixed oil is filtered through these filter holes 18; on the contrary, when the upper conical block 14 blocks its corresponding bell mouth 13, the needle 15 pokes open the filter holes 18 at this part, and at the same time the lower conical block 14 leaves its corresponding bell mouth 13, and the mixed oil is filtered through these filter holes 18. This ensures that during the filtering process, some of the filter holes 18 are always working, and the repeated entry and exit of the needle 15 can also keep the filter holes 18 unobstructed and not blocked, thereby improving the filtering efficiency. Finally, the filtered mixed oil is discharged from the oil outlet pipe 12.

[0048] The conical block 14 may not block the bell mouth 13 , and the conical block 14 and the bell mouth 13 only play a guiding role.

[0049] In the present invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless expressly limited otherwise. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integrally connected; "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0050] In the description of the present invention, it should be understood that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front", and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0051] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0052] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

[0053] Except for the technical features described in the specification, the remaining technical features are known to those skilled in the art.

Claims

1. A method for preparing a blended oil of peony seed oil, characterized in that: The steps include: 1) Raw material pretreatment: Peony seeds: Select plump, mold-free peony seeds, shell them, separate the kernel from the shell, and dry them at low temperature until the moisture content is ≤8%; Camellia seeds and walnuts: Wash and dry them separately, and shell the camellia seeds; 2) Using low-temperature extraction technology with subcritical fluid as solvent, extraction is carried out at room temperature and a pressure of 0.35-0.45 MPa to obtain peony seed crude oil, which is then refined and filtered to obtain peony seed oil; The cold pressing process is used to extract camellia seed crude oil and walnut seed crude oil, which are then refined and filtered to obtain camellia oil and walnut oil respectively; 3) Add the above-mentioned peony seed oil, camellia oil, and walnut oil in a ratio of 30-45 parts by weight, 20-30 parts by weight, and 15-25 parts by weight to a mixing tank and mix uniformly with the aid of an ultrasonic device; 4) Add 0.2-2 parts of natural vitamin E and 0.1-0.5 parts of rosemary extract and continue stirring until completely dissolved; 5) Post-treatment: First, vacuum deodorization: Place the blended oil obtained above in a vacuum deodorization device at a temperature of 60-80°C for 20-30 minutes to remove residual odor; Then nitrogen filling is carried out for preservation: the deodorized blended oil is cooled to room temperature, nitrogen is filled into the tank until the pressure inside the tank is 0.05MPa-0.1MPa, and then sealed and packaged.

2. The method for preparing the blended oil of peony seed oil according to claim 1, wherein The frequency of the ultrasonic device is set to 20 kHz-40 kHz, and the mixing time is 10-15 minutes.

3. The preparation device used in the method for preparing the blended oil of peony seed oil according to claim 1 or 2, comprising a filter tank, wherein the filter tank comprises a tank body (1), characterized in that: The tank body (1) is provided with a filter plate (16), an oil inlet cylinder (4) is provided at the upper end of the tank body (1), and the lower end of the oil inlet cylinder (4) is axially and sealedly connected to an oil inlet pipe (5) extending into the bottom of the tank body (1); a motor (2) is provided at the upper end of the oil inlet cylinder (4), a rotating shaft (3) is provided at the output end of the motor (2), and the rotating shaft (3) is fixedly connected to the oil inlet pipe (5); a stirring wing (9) is provided at the lower end of the oil inlet pipe (5), and the stirring wing (9) is located below the filter plate (16); an oil outlet pipe (12) is provided on the tank body (1), and the oil outlet pipe (12) is provided with a stirring wing (9) located below the filter plate (16); an oil outlet pipe (12) is provided on the upper end of ... ) is located above the filter plate (16); the filter plate (16) is provided with a plurality of filter holes (18), each filter hole (18) is provided with a bell mouth (13), some of the bell mouths (13) are facing upward, and some of the bell mouths (13) are facing downward; the oil outlet pipe (12) is provided with a sleeve (10) that can move up and down, and the upper and lower ends of the sleeve (10) are respectively provided with a plurality of radially evenly distributed support rods (11), and the support rods (11) are provided with needles (15) corresponding to the bell mouths (13); the filter plate (16) is slidably connected to the sleeve (10).

4. The preparation device used in the method for making the blended oil of peony seed oil according to claim 3, wherein: A conical block (14) is provided on the support rod (11), and the needle (15) is installed at the tip of the conical block (14).

5. The preparation device used in the method for making the blended oil of peony seed oil according to claim 3, characterized in that: A cylinder (6) is provided above the motor (2), and a frame (7) is provided at the output end of the cylinder (6). The frame (7) extends downward into the tank body (1) and is fixedly connected to the upper end of the sleeve (10).

6. The preparation device used in the method for making the blended oil of peony seed oil according to claim 3, characterized in that: The filter plate (16) is conical.

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