CN-121975573-A - Plant oil extraction and separation device and method

CN121975573ACN 121975573 ACN121975573 ACN 121975573ACN-121975573-A

Abstract

A plant oil extraction and separation device and a method belong to the technical field of plant oil extraction. Comprises a tank body, a material cage, a driving mechanism, an extrusion mechanism, a stirring mechanism and a suction mechanism. The tank body is provided with a temperature control unit for accommodating the extraction solvent and regulating and controlling the temperature of the extraction solvent. The material cage is used for holding plant raw materials, and a filtering structure is arranged on the wall part of the material cage. The driving mechanism is connected with the material cage and is used for driving the material cage to execute compound motion in the tank body so as to enable the plant raw materials to be fully contacted with the extraction solvent. The extruding mechanism is arranged above the tank body and is used for pressing plant raw materials in the material cage. The stirring mechanism is arranged in the tank body and is used for stirring the extraction solvent in the tank body. The suction mechanism is communicated with the tank body and is used for sucking separated grease. The invention is especially suitable for laboratory and small and medium-scale production, can complete automatic continuous operation of raw material infiltration, extraction and separation, and realizes efficient, energy-saving and environment-friendly grease extraction.

Inventors

XU XIAODONG
WU PEILIN
Qian Yitong
WANG ZEHAN
TAO TAO
FENG CHEN

Assignees

扬州工业职业技术学院

Dates

Publication Date: 20260505
Application Date: 20260202

Claims (10)

1. The utility model provides a vegetable oil extraction separator which characterized in that includes: The tank body is provided with a temperature control unit for accommodating the extraction solvent and regulating and controlling the temperature of the extraction solvent; the material cage is used for holding plant raw materials, and the wall part of the material cage is provided with a filtering structure for allowing liquid to pass through and retaining solids; The driving mechanism is connected with the material cage and is used for driving the material cage to execute compound motion in the tank body so as to enable plant raw materials to be fully contacted with the extraction solvent; The extruding mechanism is arranged above the tank body and is used for pressing plant raw materials in the material cage; The stirring mechanism is arranged in the tank body and used for stirring the extraction solvent in the tank body; And the suction mechanism is communicated with the tank body and is used for sucking separated grease.
2. The plant oil extraction and separation device according to claim 1, wherein the material cage is formed by connecting a flat top cover, a grid-shaped side wall and a grid-shaped bottom wall, and the bottom wall is in a downward-protruding arc shape.
3. The plant oil extraction and separation device according to claim 2, wherein the filtering structure is a filter cloth coated on the grid-shaped side wall and the grid-shaped bottom wall; or the filtering structure is a filtering bag arranged in the material cage.
4. The plant oil extraction and separation device according to claim 1, wherein the driving mechanism is a pair of multi-degree-of-freedom mechanical arms which are oppositely arranged, one end of each multi-degree-of-freedom mechanical arm is connected with the tank body, and the other end of each multi-degree-of-freedom mechanical arm is connected with the side wall of the material cage.
5. The plant oil extraction separator of claim 4, wherein the compound motion comprises at least one of lifting, rocking, flipping, and shaking.
6. The vegetable oil and fat extraction and separation device according to claim 1, wherein the extrusion mechanism comprises a linear motor and a compression bar driven by the linear motor, and a pressing plate is arranged at a force application end of the compression bar.
7. The plant oil extraction and separation device according to claim 1, wherein the stirring mechanism comprises a driving motor and a stirring paddle driven by the driving motor, and the stirring paddle is located below the material cage.
8. The plant oil extraction and separation device according to claim 1, wherein the suction mechanism comprises an oil suction pipe and a delivery pump, and an inlet end of the oil suction pipe is located in the tank.
9. The plant oil extraction and separation device according to claim 1, wherein the extraction solvent comprises choline chloride and lauric acid, and the weight ratio of the choline chloride to the lauric acid is 1 (6-10).
10. A method for extracting and separating vegetable oil, which adopts the device as claimed in any one of claims 1-9, and is characterized by comprising the following steps: 1) Preparation of Placing the extraction solvent in a tank body, placing plant raw materials in a material cage, and enabling the material cage to be positioned above the extraction solvent through a driving mechanism; 2) Extraction The material cage is lowered until the material cage is immersed into the extraction solvent through the driving mechanism, the material cage is driven to perform compound motion, and meanwhile, the stirring mechanism is kept to work, so that plant raw materials are fully contacted with the extraction solvent for extraction, and a mixed solution of grease and the extraction solvent is obtained; 3) Preliminary separation Starting an extrusion mechanism to press raw materials in the material cage so as to extrude residual mixed liquid; 4) Solid-liquid separation Stopping stirring, stopping heating, and cooling the mixed liquid in the tank until the extraction solvent is solidified, so as to be layered with the liquid grease; 5) Collecting And pumping the liquid grease separated from the upper layer through a pumping mechanism.

Description

Plant oil extraction and separation device and method Technical Field The invention relates to a plant oil extraction and separation device and a method, and belongs to the technical field of plant oil extraction. Background In the field of edible vegetable oil processing, a leaching method is a mainstream oil extraction technology. No. 6 solvent naphtha (commonly called 'light gasoline', the main component is normal hexane) is generally adopted for extraction in the current industrial production. Although the solvent has good solubility, the solvent has the problems of flammability, explosiveness, solvent residue, environmental pollution and the like. In addition, the existing leaching equipment has obvious limitations that the mainstream continuous industrialized device has complex structure and huge investment, and is not suitable for research and development and small-scale production. The small and medium-sized equipment has the defects of insufficient mixing, split separation flow and the like, and the procedures of extraction, pressure filtration, solid-liquid separation and the like need to transfer materials among different equipment, so that automatic continuous operation is difficult to realize in a single closed system. Therefore, developing a novel oil extraction device that is safe, green, and can realize extraction-separation integration has become a technical problem to be solved in the art. Disclosure of Invention In order to solve the problems, the invention aims to provide a plant oil extraction and separation device and a method, which are particularly suitable for laboratories and small and medium-scale production, can complete automatic continuous operation of raw material infiltration, extraction and separation, and realize efficient, energy-saving and environment-friendly oil extraction. In order to achieve the above purpose, the invention adopts the following technical scheme: The first object of the invention is to provide a plant oil extraction and separation device. The device comprises a tank body, a material cage, a driving mechanism, an extrusion mechanism, a stirring mechanism and a suction mechanism. The tank body is provided with a temperature control unit for accommodating the extraction solvent and regulating and controlling the temperature of the extraction solvent. The material cage is used for holding plant raw materials, and a filtering structure for allowing liquid to pass through and retaining solids is arranged on the wall part of the material cage. The driving mechanism is connected with the material cage and is used for driving the material cage to execute compound motion in the tank body so as to enable plant raw materials to be fully contacted with the extraction solvent. The extruder mechanism is arranged above the tank body and is used for applying pressure to plant raw materials in the material cage. The stirring mechanism is arranged in the tank body and is used for stirring the extraction solvent in the tank body. The suction mechanism is communicated with the tank body and is used for sucking separated grease. The method comprises the steps of firstly adjusting the solvent in a tank body to the optimal extraction temperature through a temperature control unit, then controlling a material cage to be immersed in the solvent through a driving mechanism and executing compound motion (such as shaking and overturning), simultaneously stirring the solvent through a stirring mechanism to form a dynamic extraction environment, enabling grease to be efficiently dissolved out, lifting the material cage after extraction is completed, pressing the material cage through a pressing mechanism to realize primary solid-liquid separation, then cooling the material cage to solidify the solvent and delaminate the solvent from the liquid grease, and finally pumping the upper grease out through a pumping mechanism to complete the whole process. Further, the plant material is cyperus bean powder. Further, the temperature control unit comprises a heating module (such as an electric heating tube), a temperature sensor and a controller, and is used for heating and controlling the temperature of the extraction solvent in the tank body. Further, the top of the tank body is provided with an upper cover, so that plant raw materials and extraction solvent are conveniently put in, and the extrusion mechanism is conveniently installed. Furthermore, the material cage is formed by connecting a flat top cover, a grid-shaped side wall and a grid-shaped bottom wall, wherein the bottom wall is in a downward-protruding arc shape, so that the contact area of the bean powder and the solvent can be increased. Further, the filtering structure is a filter cloth coated on the grid-shaped side wall and the grid-shaped bottom wall, or the filtering structure is a filter bag arranged in the material cage. The plant raw material (bean powder) is placed in a filter cloth or a filter bag. Further, the drivi