阅读说明：本技术 一种植物油榨油方法 (Vegetable oil pressing method ) 是由 王瑞雪 于 2019-09-21 设计创作，主要内容包括：一种植物油榨油方法,包括如下步骤：根据油料的重量以及体积,计算其堆积密度；将固定量的油料通过入料口进入加热装置,以固定功率以及固定加热温度加热,通过温度传感器检测多个时刻的油料温度；线性拟合所述多个时刻的油料温度和时间分布,确定拟合函数的斜率；根据油料的堆积密度以及拟合函数斜率,确定油料的标准加热温度；将加热装置的温度调整到所确定的标准加热温度,将剩余的油料通过入料口输入加热装置；油料通过加热装置后对油料进行压榨而产生植物油。通过本发明的榨油方法,能够提高植物油的出油率和出油质量。(A vegetable oil pressing method comprises the following steps: calculating the bulk density of the oil material according to the weight and the volume of the oil material; feeding a fixed amount of oil into a heating device through a feeding port, heating with fixed power and fixed heating temperature, and detecting the temperature of the oil at multiple moments through a temperature sensor; linearly fitting the oil temperature and time distribution at the multiple moments to determine the slope of a fitting function; determining the standard heating temperature of the oil material according to the bulk density of the oil material and the slope of the fitting function; adjusting the temperature of the heating device to the determined standard heating temperature, and inputting the residual oil into the heating device through a feeding port; the oil passes through a heating device and is pressed to produce vegetable oil. The oil extraction method can improve the oil yield and the oil extraction quality of the vegetable oil.)

1. A vegetable oil pressing method comprises the following steps: (1) placing oil into a temporary storage part, wherein the temporary storage part is provided with a weight sensor and a volume sensor; (2) calculating the bulk density of the oil material according to the weight and the volume of the oil material; (3) feeding a fixed amount of oil in the temporary storage part into a heating device through a feeding port, heating the oil by the heating device at a fixed power and a fixed heating temperature, and detecting the temperature of the oil at a plurality of moments through a temperature sensor; (4) linearly fitting the oil temperature and time distribution of the oil at the multiple moments to determine the slope of a fitting function; (5) determining the standard heating temperature of the oil material according to the bulk density of the oil material and the slope of the fitting function; (6) adjusting the temperature of the heating device to the standard heating temperature determined in the step (5), and inputting the residual oil in the temporary storage part into the heating device through a feeding port; (7) the oil passes through a heating device and is pressed to produce vegetable oil.

2. The method for extracting oil from vegetable oil according to claim 1, wherein: and (4) setting the heating temperature as the lowest heating standard temperature of all the oil materials.

3. The method for extracting oil from vegetable oil according to claim 2, wherein: before the step (1), the bulk densities, the standard temperature and time fitting function slopes and the standard heating temperature of the different kinds of oil are stored in a memory.

4. The method for extracting oil from vegetable oil according to claim 3, wherein: the oil material is one of peanut, soybean, sesame, corn, tea seed, rapeseed, cottonseed, walnut, sunflower seed and the like.

Technical Field

The invention relates to the field of oil presses, in particular to a vegetable oil pressing control method.

Background

The squeezing method of vegetable oil is produced by adopting a pure physical squeezing oil-making process, does not involve adding chemical substances, retains the original rich nutrition of the oil, has no chemical solvent pollution, and does not contain any chemical anti-corrosion antioxidant. Ensures the safety, nutrition and delicacy of the product, meets the requirements of human health, and is suitable for long-term reassurance eating.

When the vegetable oil is extracted by high-temperature squeezing, the oil is steamed and fried at high temperature, so that the tissue structure of the oil can be damaged, and the oil is separated from the crop structure, so that the oil can be easily squeezed out when the oil is squeezed, the squeezing time is short, the squeezing process is relatively short, and the power of the oil extracting machine motor is relatively low.

The heating temperature of the raw materials is different for different kinds of oil, and the oil yield of the certain kinds of vegetable oil which is pressed after being heated is not greatly different from the oil yield of the vegetable oil which is not heated, so that different cooking temperatures are required to be used for different kinds of edible oil in the pressing process.

disclosure of Invention

The invention aims to provide a vegetable oil pressing method which can determine the type and heating temperature of raw materials without the need of user input and the need of determining the chemical components of the raw materials by a chemical detection instrument.

As one aspect of the present invention, there is provided a method for extracting vegetable oil, comprising the steps of: (1) placing oil into a temporary storage part, wherein the temporary storage part is provided with a weight sensor and a volume sensor; (2) calculating the bulk density of the oil material according to the weight and the volume of the oil material; (3) feeding a fixed amount of oil in the temporary storage part into a heating device through a feeding port, heating the oil by the heating device at a fixed power and a fixed heating temperature, and detecting the temperature of the oil at a plurality of moments through a temperature sensor; (4) linearly fitting the oil temperature and time distribution of the oil at the multiple moments to determine the slope of a fitting function; (5) determining the standard heating temperature of the oil material according to the bulk density of the oil material and the slope of the fitting function; (6) adjusting the temperature of the heating device to the standard heating temperature determined in the step (5), and inputting the residual oil in the temporary storage part into the heating device through a feeding port; (7) the oil passes through a heating device and is pressed to produce vegetable oil.

further, the heating temperature in the step (3) is set as the lowest heating standard temperature in all the oil materials.

Further, before the step (1), the bulk densities, the standard temperature and time fitting function slopes and the standard heating temperature of the different oil materials are stored in a memory.

Further, in the step (5), the bulk density of the oil is judged firstly, and if the bulk density of the oil is only within the bulk density range of a single specific oil, the standard heating temperature of the specific oil is determined as the heating temperature of the heating device; and if the bulk density of the oil is in the bulk density range of the oil types, selecting the standard heating temperature of the oil type with the minimum value as the heating temperature of the heating device by calculating the sum of the bulk density similarity rate and the slope similarity rate of the temperature time fitting function.

Further, the bulk density similarity ratio is:

S1i=︱ρ-(ρil+ρih)/2︱/((ρil+ρih)/2),

rho is the detected bulk density of the oil, rhol is the minimum value of the bulk density range of the ith oil type in the multiple oil types, and rhoih is the maximum value of the bulk density range of the ith oil type in the multiple oil types;

The temperature time fitting function slope similarity rate is as follows:

S2i=︱K-(Kil+Kih)/2︱/((Kil+Kih)/2),

Where K is the temperature time fit function slope for the oil, Kil is the minimum of the standard temperature time fit function slopes for the ith oil species in the multiple oil species, Kih is the maximum of the standard temperature time fit function slopes for the ith oil species in the multiple oil species.

Further, the oil material is one of peanut, soybean, sesame, corn, tea seed, rapeseed, cottonseed, walnut, sunflower seed and the like.

As another aspect of the present invention, there is provided an oil press for use in the method for pressing vegetable oil, comprising: the temporary storage part is arranged above the feeding port of the steaming and frying heating device, and a weight sensor and a volume sensor are arranged in the temporary storage part; the steaming and frying heating device is used for steaming and frying oil in the steaming and frying heating device and is internally provided with a temperature sensor; a bulk density calculating part for calculating the bulk density controller according to the weight and volume of the oil material in the temporary storage part; the controller is used for temporarily storing the oil quality of the steaming and frying heating device and the heating temperature of the steaming and frying heating device; a temperature-time fitting unit for determining a slope of a fitting function based on a linear distribution of oil temperature and time at a plurality of times of the oil in the linear steaming and frying heating device; a storage unit for storing the bulk density, the standard temperature-time fitting function slope, and the standard heating temperature of different types of oil materials; the control part determines the standard heating temperature of the oil material according to the stacking density of the oil material, the slope of the fitting function and the data in the storage part.

Detailed Description

in order to more clearly illustrate the technical solutions of the present invention, the present invention will be briefly described below by using embodiments, and it is obvious that the following description is only one embodiment of the present invention, and for those skilled in the art, other technical solutions can be obtained according to the embodiments without inventive labor, and also fall within the disclosure of the present invention.

The vegetable oil pressing method provided by the embodiment of the invention is used for pressing and extracting vegetable oil at a high temperature of the oil press, and the oil press can be used for pressing various different oil materials, wherein the oil materials can be one of peanuts, soybeans, sesames, corns, tea seeds, rapeseed, cottonseed, walnuts, sunflower seeds and the like.

The oil press of the embodiment of the invention comprises: the temporary storage part is arranged above the feeding port of the steaming and frying heating device, and a weight sensor and a volume sensor are arranged in the temporary storage part; the steaming and frying heating device is used for steaming and frying oil in the steaming and frying heating device and is internally provided with a temperature sensor; a bulk density calculating part for calculating the bulk density controller according to the weight and volume of the oil material in the temporary storage part; the controller is used for temporarily storing the oil quality of the steaming and frying heating device and the heating temperature of the steaming and frying heating device; a temperature-time fitting unit for determining a slope of a fitting function based on a linear distribution of oil temperature and time at a plurality of times of the oil in the linear steaming and frying heating device; a storage unit for storing the bulk density, the standard temperature-time fitting function slope, and the standard heating temperature of different types of oil materials; the control part determines and determines the standard heating temperature of the oil material according to the stacking density of the oil material, the slope of the fitting function and the data in the storage part; and a squeezing part which squeezes the oil material heated by the steaming and frying heating device.

The vegetable oil pressing method provided by the embodiment of the invention comprises the following steps: (1) placing oil into a temporary storage part, wherein the temporary storage part is provided with a weight sensor and a volume sensor; (2) calculating the bulk density of the oil material according to the weight and the volume of the oil material; (3) feeding a fixed amount of oil in the temporary storage part into a heating device through a feeding port, heating the oil by the heating device at a fixed power and a fixed heating temperature, and detecting the temperature of the oil at a plurality of moments through a temperature sensor; (4) linearly fitting the oil temperature and time distribution of the oil at the multiple moments to determine the slope of a fitting function; (5) determining the standard heating temperature of the oil material according to the bulk density of the oil material and the slope of the fitting function; (6) adjusting the temperature of the heating device to the standard heating temperature determined in the step (5), and inputting the residual oil in the temporary storage part into the heating device through a feeding port; (7) the oil passes through a heating device and is pressed to produce vegetable oil.

Before oil extraction, the bulk densities, standard temperature and time fitting function slopes and standard heating temperatures of different oil types are stored in a storage part of the oil press. The bulk density of individual oils has a maximum and minimum bulk density range depending on the oil moisture content, and the bulk density ranges of different types of oils differ or have an intersection depending on the oil properties, e.g., the bulk density of walnut kernels is less than the bulk density ranges of corn and soybeans, and the bulk density ranges of corn and soybeans have an intersection; the heating temperature cannot be determined for oils with crossed ranges by bulk density alone. The standard temperature time fitting function slope is the slope of a fitting curve of the temperature and the time of the oil with the same quality at the same heating temperature and the same heating power and at different times, and the oil type of the oil with crossed bulk density can be further determined according to the standard temperature time fitting function slope. The standard heating temperature is the heating temperature corresponding to the stable oil yield of a single oil material.

In the step (1), oil is put into a temporary storage part, and the temporary storage part is provided with a weight sensor and a volume sensor. The volume sensor may include a height sensor, the volume of which is determined according to the height of the oil in the temporary storage. Wherein the oil put into the temporary storage section needs to be at least more than a minimum value.

In the step (2), the bulk density calculating part calculates the bulk density according to the weight and the volume of the oil material in the temporary storage part.

In the step (3), the controller enables a fixed amount of oil in the temporary storage part to enter the heating device through the feeding port, the heating device heats with fixed power and fixed heating temperature, and the oil temperature at a plurality of moments is detected through the temperature sensor, wherein the plurality of moments can be at least three moments, and the three moments are three moments close to the initial heating time. And (3) setting the fixed amount of oil as the minimum value in the step (1), and setting the fixed heating temperature as the standard heating temperature of the oil with the lowest standard heating temperature in all the oil materials which can be processed by the oil press.

In the step (4), the temperature and time fitting part linearly fits the oil temperature and time distribution at the plurality of moments to determine the slope of the fitting function, and the least square fitting can be used, for example.

And (5) determining the standard heating temperature of the oil according to the bulk density of the oil and the slope of the fitting function. Specifically, the bulk density of the oil is judged firstly, and if the bulk density of the oil is only within the bulk density range of a single specific oil, the standard heating temperature of the specific oil is determined to be the heating temperature of the heating device; and if the bulk density of the oil is in the bulk density range of the oil types, selecting the standard heating temperature of the oil type with the minimum value as the heating temperature of the heating device by calculating the sum of the bulk density similarity rate and the slope similarity rate of the temperature time fitting function.

Further, the bulk density similarity ratio is:

S1i=︱ρ-(ρil+ρih)/2︱/((ρil+ρih)/2),

Rho is the detected bulk density of the oil, rhol is the minimum value of the bulk density range of the ith oil type in the multiple oil types, and rhoih is the maximum value of the bulk density range of the ith oil type in the multiple oil types;

the temperature time fitting function slope similarity rate is as follows:

S2i=︱K-(Kil+Kih)/2︱/((Kil+Kih)/2),

Where K is the temperature time fit function slope for the oil, Kil is the minimum of the standard temperature time fit function slopes for the ith oil species in the multiple oil species, Kih is the maximum of the standard temperature time fit function slopes for the ith oil species in the multiple oil species.

And (6) adjusting the temperature of the heating device to the standard heating temperature determined in the step (5), and inputting the residual oil in the temporary storage part into the heating device through the feeding port. And (7) pressing the oil material after the oil material passes through the heating device to generate vegetable oil.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.