A rapeseed oil degumming device
By combining the synergistic effects of the preheater, static mixer, acidification tank, hydration tank, and disc centrifuge with the enhanced mixing and separation by spiral blades, the problems of uneven mixing, inaccurate control, and low separation efficiency in traditional rapeseed oil degumming devices have been solved, achieving efficient degumming and improved oil quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAINAN AUSKA INT GRAIN & OIL CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-06-23
AI Technical Summary
Traditional rapeseed oil degumming devices suffer from uneven mixing, inaccurate control, and low separation efficiency, resulting in gum residue that affects oil quality and production efficiency.
The system utilizes the synergistic effect of a preheater, static mixer, acidification tank, hydration tank, and disc centrifuge, combined with spiral blades to enhance mixing and separation. The static mixer achieves uniform mixing, the spiral blades promote reaction and separation, and the disc centrifuge is used for colloidal separation.
It improves degumming efficiency, reduces energy consumption, and enhances the quality and production efficiency of oils.
Smart Images
Figure CN224394831U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of degumming devices, specifically to a rapeseed oil degumming device. Background Technology
[0002] Rapeseed oil, as one of the world's most important edible vegetable oils, is highly favored by consumers due to its rich content of unsaturated fatty acids and vitamin E. However, its crude oil contains pectin-soluble impurities such as phospholipids, proteins, and mucilage (collectively known as gums). The presence of these impurities not only causes undesirable phenomena such as foaming, smoking, and sedimentation when the oil is heated, but also reduces the stability and shelf life of the oil, affecting the efficiency and effectiveness of subsequent refining processes (such as deacidification, decolorization, and deodorization), and may even catalyze the oxidation and hydrolysis of the oil, producing harmful substances. Therefore, degumming is an indispensable first and crucial step in the refining process of rapeseed oil, and its effectiveness directly determines the quality, yield, and production cost of the finished oil.
[0003] Traditional degumming devices often employ single acidification or hydration degumming methods. Insufficient mixing uniformity leads to incomplete reactions, and residual gum can easily cause oil oxidation and deterioration. In particular, during acidification degumming, the uniformity of mixing between acid and crude oil directly affects the degumming effect, and existing equipment often struggles to achieve sufficient mixing. Furthermore, the amount of hot water added and temperature control during the hydration degumming stage also significantly impact the degumming effect. In addition, traditional degumming devices often use mechanically stirred tanks for acidification or hydration treatment, and the gap between the stirring paddle and the tank wall can easily create dead zones in the flow, leading to the adhesion of deposits. Utility Model Content
[0004] The purpose of this invention is to provide a rapeseed oil degumming device to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following solution:
[0006] A rapeseed oil degumming device is disclosed, wherein crude rapeseed oil enters a preheater through a filter; the output end of the preheater is connected to the input end of a first static mixer; the output end of the first static mixer is connected to the inlet of an acidification tank; an acid inlet pipe is connected to the upper part of the first static mixer; an outlet is provided at the bottom of the acidification tank; the outlet of the acidification tank is connected to the input end of a second static mixer; a hot water pipe is connected to the upper part of the second static mixer; an electric hot water tank is connected to the second static mixer through a hot water pipe; the output end of the second static mixer is connected to the inlet of a hydration tank; an outlet is provided at the bottom of the hydration tank; the outlet of the hydration tank is connected to the inlet of a disc centrifuge; the light phase outlet of the disc centrifuge is connected to an external oil storage tank; the heavy phase outlet of the disc centrifuge is connected to an external oil residue tank; a first spiral blade is provided in the inner cavity of the acidification tank, contacting the inner wall of the acidification tank; a second spiral blade is provided in the inner cavity of the hydration tank, contacting the inner wall of the hydration tank.
[0007] In one feasible implementation, a filter screen is provided in the middle of the inner side of the filter.
[0008] In one feasible implementation, an acid inlet flow meter and an acid inlet valve are installed on the acid inlet pipe.
[0009] In one feasible implementation, a hot water pump, an inlet flow meter, and an inlet valve are connected to the hot water pipeline.
[0010] In one feasible implementation, a first servo motor for driving a first rotating shaft is fixedly installed on the top of the acidification tank; the output end of the first servo motor is fixedly connected to the first rotating shaft; multiple first stirring shafts are uniformly arranged and fixedly connected to the outer surface of the first rotating shaft; first helical blades are fixedly connected to the outer surface of each of the first stirring shafts; and the first helical blades are all in contact with the inner wall of the first acidification tank. This is used to propel the mixture formed by crude rapeseed oil and acidic solution to form an all-round agitation within the acidification tank and to remove deposits adhering to the inner wall of the acidification tank.
[0011] In one feasible implementation, a second servo motor for driving the second rotating shaft to rotate is fixedly installed on the top of the hydration tank; the output end of the second servo motor is fixedly connected to the second rotating shaft; multiple second stirring shafts are evenly arranged and fixedly connected to the outer surface of the second rotating shaft; second spiral blades are fixedly connected to the outer surface of the second stirring shafts respectively; and the second spiral blades are all in contact with the inner wall of the hydration tank.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This invention provides a rapeseed oil degumming device. Through the synergistic effect of a preheater, static mixer, acidification tank, hydration tank and disc centrifuge, combined with spiral blades to enhance the mixing and separation effect, it solves the problems of uneven mixing, inaccurate control and low separation efficiency in traditional degumming processes. It has the advantages of improving degumming efficiency, reducing energy consumption and improving oil quality. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of a rapeseed oil degumming device according to this utility model;
[0015] Figure 2 This is a schematic diagram of the acidification tank of a rapeseed oil degumming device according to this utility model;
[0016] Figure 3 This is a schematic diagram of the hydration tank of a rapeseed oil degumming device according to this utility model.
[0017] Explanation of reference numerals in the attached figures:
[0018] 1-Filter; 2-Preheater; 3-First static mixer; 4-Acid inlet pipe; 5-Acidification tank; 6-Second static mixer; 7-Hot water pipe; 8-Electric hot water tank; 9-Hydration tank; 10-Butterfly centrifuge; 11-Oil storage tank; 12-Oil foot tank; 13-Acid inlet flow meter; 14-Acid inlet valve; 15-Hot water pump; 16-Water inlet flow meter; 17-Water inlet valve;
[0019] 51-First servo motor; 52-First rotating shaft; 53-First stirring shaft; 54-First spiral blade; 91-Second servo motor; 92-Second rotating shaft; 93-Second stirring shaft; 94-Second spiral blade. Detailed Implementation
[0020] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a full understanding of the implementation of embodiments of the present invention. Example 1
[0021] See Figures 1-3In one embodiment of this application, a rapeseed oil degumming device is provided. Crude rapeseed oil enters a preheater 2 through a filter 1. A filter screen is provided in the middle of the inner side of the filter 1 to intercept solid particulate impurities in the crude rapeseed oil. The filtered oil flows to the preheater 2, where the temperature of the crude oil is raised to about 80°C, reaching a suitable temperature for acidification reaction. The oil is then connected to the input end of a first static mixer 3 through the output end of the preheater 2, and enters the first static mixer 3 for thorough mixing. The upper part of the first static mixer 3 is connected to an acid inlet pipe 4, which is equipped with an acid inlet flow meter 13 and an acid inlet valve 14. The acid inlet flow meter 13 is used to monitor the delivery volume of the acid solution in real time, and the acid inlet valve 14 is used to adjust the valve opening, thereby ensuring that the acid solution and crude rapeseed oil form a stable ratio in the first static mixer 3. This avoids incomplete removal of gums due to insufficient acid after entering the acidification tank 5, or an increased burden on subsequent neutralization treatment due to excessive acid, thus ensuring sufficient hydrolysis of gums while reducing acid waste. The output end of the first static mixer 3 is connected to the inlet of the acidification tank 5. A first servo motor 51 for driving the first rotating shaft 52 to rotate is fixedly installed on the top of the acidification tank 5. The output end of the first servo motor 51 is fixedly connected to the first rotating shaft 52. A first stirring shaft 53 transmits rotational power. Multiple first stirring shafts 53 are evenly arranged and fixedly connected to the outer surface of the first rotating shaft 52. First spiral blades 54 are fixedly connected to the outer surface of the first stirring shafts 53 respectively. The first spiral blades 54 are all in contact with the inner wall of the acidification tank 5. A servo motor 51 drives the first rotating shaft 52 to rotate the stirring shaft. The first spiral blades 54 move in close contact with the inner wall of the acidification tank 5 under centrifugal force, continuously scraping the inner wall during rotation to prevent the colloid from adhering. Simultaneously, they push the material into an alternating vortex and laminar flow mixing state, allowing the acidic solution to be sheared and dispersed into the oil phase through multiple stages. This converts non-hydrated phospholipids in the crude oil into hydrated phospholipids, improves the acidification reaction efficiency, and reduces the problem of incomplete degumming caused by unreacted colloids entering subsequent processes. The bottom of the acidification tank 5 has a discharge port, which is connected to the input end of the second static mixer 6. The upper part of the second static mixer 6 is connected to a hot water pipe 7. The electric hot water tank 8 is connected to the second static mixer 6 through the hot water pipe 7. The hot water pipe 7 is connected to a hot water pump 15, an inlet flow meter 16, and an inlet valve 17. The electric hot water tank 8 raises the hot water temperature to about 95°C. The hot water pump 15 provides power for delivering hot water. The inlet flow meter 16 is used to monitor the amount of hot water delivered in real time. The inlet valve 17 is a switch device used to adjust the hot water flow rate, ensuring that the amount of hot water added is in a fixed ratio with the acidified rapeseed oil and that they are in full contact in the second static mixer 6. This prevents incomplete hydration or gum residue caused by excessive or insufficient hot water after entering the hydration tank 9.A second servo motor 91 for driving the second rotating shaft 92 is fixedly installed on the top of the hydration tank 9. The output end of the second servo motor 91 is fixedly connected to the second rotating shaft 92. Multiple second stirring shafts 93 are evenly arranged and fixedly connected to the outer surface of the second rotating shaft 92. Second spiral blades 94 are fixedly connected to the outer surface of the second stirring shafts 93 respectively. The second spiral blades 94 are all in contact with the inner wall of the hydration tank 9. The bottom of the hydration tank 9 is provided with a discharge port, which is connected to the inlet of the disc centrifuge 10. The output end of the second static mixer 6 is connected to the inlet of the hydration tank 9. The uniformly mixed acidified rapeseed oil and hot water mixture undergoes a hydration reaction in the hydration tank 9, causing the hydrated phospholipids in the oil to absorb water, expand, and aggregate into flocculent substances, which are then precipitated from the oil. When the second servo motor 91 drives the second rotating shaft 92 to rotate, the second stirring shafts 93, which are evenly distributed on the second rotating shaft 92, drive the second spiral blades 94 to move circumferentially along the inner wall of the hydration tank 9. While the second helical blade 94 remains in contact with the inner wall of the hydration tank 9, it continuously scrapes against the surface of the colloid adhering to the inner wall of the hydration tank 9, breaking down the layer of colloids adhering to the surface of the hydration tank 9. At the same time, the centrifugal force generated by the rotation of the blades causes the oil-water mixture to form a vortex, promoting the precipitation of colloidal impurities from the grease. The light phase outlet of the disc centrifuge 10 is connected to the external oil storage tank 11, and the heavy phase outlet of the disc centrifuge 10 is connected to the external oil residue tank 12.
[0022] The crude rapeseed oil of this invention passes through filter 1 to remove solid impurities and then enters preheater 2 to raise the temperature to a suitable range for acidification reaction. It forms a uniformly dispersed system with a metered acidic solution in first static mixer 3. After reacting in acidification tank 5 with first helical blades 54, the first helical blades 54 in acidification tank 5 push the mixture to form a spiral flow to ensure sufficient acidification. The acidified oil is mixed with a metered amount of hot water in second static mixer 6 and then enters hydration tank 9 with second helical blades 94. After reacting in hydration tank 9, the second helical blades 94 in hydration tank 9 push the mixture to form a spiral flow. Finally, the gum coagulation is completed in hydration tank 9 and separated by disc centrifuge 10.
[0023] This invention provides a rapeseed oil degumming device. Through the synergistic effect of a preheater, static mixer, acidification tank, hydration tank and disc centrifuge, combined with spiral blades to enhance the mixing and separation effect, it solves the problems of uneven mixing, inaccurate control and low separation efficiency in traditional degumming processes. It has the advantages of improving degumming efficiency, reducing energy consumption and improving oil quality.
[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A rapeseed oil degumming device, characterized in that, Crude rapeseed oil enters the preheater through a filter; the output end of the preheater is connected to the input end of the first static mixer; the output end of the first static mixer is connected to the inlet of the acidification tank; an acid inlet pipe is connected to the upper part of the first static mixer; an outlet is provided at the bottom of the acidification tank; the outlet of the acidification tank is connected to the input end of the second static mixer; a hot water pipe is connected to the upper part of the second static mixer; an electric hot water tank is connected to the second static mixer through a hot water pipe; the output end of the second static mixer is connected to the inlet of the hydration tank; an outlet is provided at the bottom of the hydration tank; the outlet of the hydration tank is connected to the inlet of the disc centrifuge; the light phase outlet of the disc centrifuge is connected to an external oil storage tank; the heavy phase outlet of the disc centrifuge is connected to an external oil residue tank; the inner cavity of the acidification tank is provided with a first spiral blade in contact with the inner wall of the acidification tank; the inner cavity of the hydration tank is provided with a second spiral blade in contact with the inner wall of the hydration tank.
2. The rapeseed oil degumming device according to claim 1, characterized in that, A filter screen is provided in the middle of the inner side of the filter.
3. The rapeseed oil degumming device according to claim 1, characterized in that, The acid inlet pipe is equipped with an acid inlet flow meter and an acid inlet valve.
4. The rapeseed oil degumming device according to claim 1, characterized in that, The hot water pipeline is connected to a hot water pump, an inlet flow meter, and an inlet valve.
5. The rapeseed oil degumming device according to claim 1, characterized in that, A first servo motor for driving a first rotating shaft to rotate is fixedly installed on the top of the acidification tank; the output end of the first servo motor is fixedly connected to the first rotating shaft; a plurality of first stirring shafts are evenly arranged and fixedly connected to the outer surface of the first rotating shaft; a first spiral blade is fixedly connected to the outer surface of the first stirring shaft; the first spiral blades are all in contact with the inner wall of the acidification tank.
6. The rapeseed oil degumming device according to claim 1, characterized in that, A second servo motor for driving the second rotating shaft to rotate is fixedly installed on the top of the hydration tank; the output end of the second servo motor is fixedly connected to the second rotating shaft; a plurality of second stirring shafts are evenly arranged and fixedly connected to the outer surface of the second rotating shaft; second spiral blades are fixedly connected to the outer surface of the second stirring shafts respectively; the second spiral blades are all in contact with the inner wall of the hydration tank.