A plant oil extraction device and process

Abstract

The invention relates to the technical field of plant oil extraction, in particular to a plant oil extraction device and process, comprising a high-pressure tank and an upper cover; an inner tank frame, a raw material barrel, a filter membrane plate 1, a barrel cover, a lower filter membrane, a vertical pipe, a liquid delivery pump, a branch pipe 1, a branch pipe 2 and a solvent and fat collection system, wherein the inner tank frame is installed inside the high-pressure tank, the raw material barrel is installed on the upper part of the inner tank frame, a filter membrane plate 1 is arranged at the bottom of the raw material barrel, a barrel cover is movably installed at the upper end of the raw material barrel, a lower filter membrane is installed at the lower side wall of the inner tank frame and the bottom of the inner tank frame, the vertical pipe passes through the lower filter membrane and the filter membrane plate 1, a liquid delivery pump, a branch pipe 1 and a branch pipe 2 are installed on the vertical pipe, the liquid delivery pump is located below the inner tank frame, the branch pipe 1 is located at the bottom of the high-pressure tank, and the branch pipe 2 is located at the bottom of the inner tank frame; plant powder is independently separated, and anhydrous ethanol and plant oil are discharged independently in sequence, and there is no need to separate oil and anhydrous ethanol subsequently, and the working efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of plant oil extraction, and in particular to a plant oil extraction device and process. Background Art

[0002] Aromatic oils can be extracted from plants, and these oils are widely used, especially in the field of cosmetics. A Chinese invention patent application with a prior art publication number of CN118406527A proposes a plant extract production device and process, which uses anhydrous ethanol as a solvent. Anhydrous ethanol has no toxicity, so the produced plant oil has no harmful solvent residue, is green, safe and healthy, and has high quality. Since anhydrous ethanol has a strong polarity, the extracted oil is mainly unsaturated fatty acids, the process flow is simpler, and the production cost is reduced. The method firstly provides a negative ion generator between the one-way air inlet valve and the air filter, and turns on the negative ion generator while turning on the high-pressure pump, the air filter and the air dryer, so that the high-pressure gas passed into the high-pressure tank is a negative ion gas. Secondly, the high-pressure pump discharges the extract into a vacuum tank, and the oil and anhydrous ethanol are obtained after precipitation and cooling in the vacuum pump, and the extraction efficiency is high.

[0003] However, the above extraction equipment and process are relatively simple in that the process of extracting oil by soaking plant powder in anhydrous ethanol is relatively simple, and the plant powder is directly mixed with anhydrous ethanol and distributed in a high-pressure tank. When the oil is discharged, the oil and anhydrous ethanol mixed extract is discharged and then the oil and anhydrous ethanol are separated. After the extract is discharged, the plant powder residue in the high-pressure tank needs to be cleaned, and the work efficiency is low. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a plant oil extraction device and process with high working efficiency, in which plant powder is independently separated, anhydrous ethanol and plant oil are discharged independently in sequence, and there is no need for subsequent separation of oil and anhydrous ethanol.

[0005] The vegetable oil extraction equipment of the present invention comprises a high-pressure tank and an upper cover, wherein a chamber is arranged inside the high-pressure tank, an opening communicating with the chamber is arranged at the upper end of the high-pressure tank, and the upper cover is installed on the opening of the high-pressure tank; the equipment also comprises an inner liner frame, a raw material barrel, a filter membrane plate 1, a barrel cover, a lower filter membrane, a vertical pipe, a liquid delivery pump, a branch pipe 1, a branch pipe 2 and a solvent and fat collection system, wherein the inner liner frame is installed inside the chamber of the high-pressure tank, the raw material barrel is installed on the upper part of the inner liner frame, a filter membrane plate 1 is arranged at the bottom of the raw material barrel, the filter membrane plate 1 allows oil and anhydrous ethanol to pass through, the barrel cover is movably installed at the upper end of the raw material barrel, and the lower side wall of the inner liner frame and the inner liner frame are connected to the inner liner frame. A lower filter membrane is installed at the bottom of the frame, and the lower filter membrane allows anhydrous ethanol to pass through. The upper edge of the lower filter membrane on the side wall of the inner tank frame is connected to the bottom of the raw material barrel. The vertical pipe is vertically inserted in the chamber of the high-pressure tank. The vertical pipe passes through the lower filter membrane and the filter membrane plate 1 at the bottom of the inner tank frame from bottom to top. The upper end of the vertical pipe is located in the raw material barrel. A liquid delivery pump, branch pipe 1 and branch pipe 2 are installed on the vertical pipe. The liquid delivery pump is located below the inner tank frame. Branch pipe 1 is located at the inner bottom of the high-pressure tank. Branch pipe 2 is located at the inner bottom of the inner tank frame. Electric control valves are installed on the upper end of the vertical pipe, the lower end of the vertical pipe, branch pipe 1 and branch pipe 2. The solvent and fat collection system are connected to the lower end of the vertical pipe.When working, add plant powder into the raw material barrel, use the barrel cover to seal the upper port of the raw material barrel, close the upper cover, close the valves of branch pipe 1 and branch pipe 2, open the valve at the upper end of the vertical pipe, and the solvent and fat collection system delivers anhydrous ethanol to the lower end of the vertical pipe. Turn on the liquid delivery pump to input anhydrous ethanol into the raw material barrel through the vertical pipe, so that the anhydrous ethanol impacts the plant powder and enters the chamber of the high-pressure tank through the micropores of the filter membrane plate 1 and the lower filter membrane. When the anhydrous ethanol submerges the raw material barrel, close the valve at the lower end of the vertical pipe. The valve of branch pipe 1 is opened, and the liquid delivery pump continues to operate, so that the anhydrous ethanol at the bottom of the high-pressure tank is input into the raw material barrel through branch pipe 1 and the vertical pipe, so that the anhydrous ethanol inside the high-pressure tank continuously flows back to flush the plant powder. After the anhydrous ethanol flushes the plant powder, the plant oil dissolves in the anhydrous ethanol and enters the lower part of the inner tank frame through the filter membrane plate 1. The lower filter membrane intercepts the plant oil, and the anhydrous ethanol enters the chamber of the high-pressure tank through the micropores of the lower filter membrane, thereby realizing the circulation of anhydrous ethanol to extract the plant oil, and The plant oil is enriched in the lower part of the inner tank frame. After the oil extraction in the plant powder is completed, the valve at the upper end of the vertical pipe is closed, and the valve at the lower end of the vertical pipe is opened, so that the anhydrous ethanol in the chamber of the high-pressure tank is recovered by the solvent and fat collection system through the branch pipe 1 and the vertical pipe. After the anhydrous ethanol in the chamber of the high-pressure tank is emptied, the anhydrous ethanol mixed with the plant oil in the lower part of the inner tank frame is discharged through the micropores of the lower filter membrane. When the anhydrous ethanol is completely discharged, the valve of the branch pipe 1 is closed, and the valve of the branch pipe 2 is opened, so that the oil enriched in the lower part of the inner tank frame is discharged through the branch pipe 2 and the vertical pipe. The solvent and fat collection system collects the plant oil, opens the upper cover and the barrel cover, and cleans the plant powder residue in the raw material barrel. Compared with the prior art, the plant powder is separated independently, and the plant powder will not be mixed with the anhydrous ethanol and distributed in the high-pressure tank. After the extract is discharged, it is not necessary to clean the plant powder residue in the high-pressure tank, and the anhydrous ethanol and the plant oil are discharged independently in sequence, and there is no need to separate the oil and anhydrous ethanol later, and the work efficiency is high. ;

[0006] Preferably, it also includes a liquid level sensor, which is installed on the upper cover, and the lower end of the liquid level sensor extends into the upper part of the chamber of the high-pressure tank, and the liquid level sensor is located above the raw material barrel; the liquid level sensor is used to detect the liquid level of anhydrous ethanol in the chamber of the high-pressure tank, and when the anhydrous ethanol contacts the liquid level sensor, the liquid level sensor sends a signal to the controller, and after receiving the signal, the controller controls the valve at the lower end of the vertical pipe to close, and starts the circulation of anhydrous ethanol in the chamber of the high-pressure tank, thereby improving the degree of automation.

[0007] Preferably, it also includes a temperature sensor and a heater, the temperature sensor is installed on the high-pressure tank, the probe of the temperature sensor extends into the chamber of the high-pressure tank, and the heater is installed in the chamber of the high-pressure tank; the heater heats the anhydrous ethanol in the chamber of the high-pressure tank, and the probe of the temperature sensor detects the temperature of the anhydrous ethanol, thereby controlling the temperature of the anhydrous ethanol, so that the plant powder can extract the plant oil at a higher temperature, thereby improving the oil extraction efficiency.

[0008] Preferably, it also includes an air filling pipe, which is installed on the upper cover and the lower end of which extends into the upper part of the chamber of the high-pressure tank; the air filling pipe is connected to an external compressed air system so that high-pressure air treated with negative ions is input into the space in the upper part of the chamber of the high-pressure tank, so that the plant powder can be used to extract oil under high pressure, thereby improving the oil extraction efficiency.

[0009] Preferably, it also includes a push cylinder 1, the fixed end of which is installed on the upper cover, and the piston rod of the push cylinder 1 passes through the upper cover and is connected to the barrel cover; after the anhydrous ethanol in the high-pressure tank is discharged, the piston rod of the push cylinder 1 extends to push the barrel cover downward, so that the barrel cover presses the plant powder in the raw material barrel and squeezes out the extract in the plant powder, thereby improving the oil extraction efficiency of the plant powder.

[0010] Preferably, it also includes multiple hook plates. Multiple hook plates are installed on the inner wall of the upper port of the raw material barrel. The barrel cover is provided with slots matching the multiple hook plates. After the barrel cover is installed into the upper end of the raw material barrel, the multiple hook plates hook the barrel cover; the multiple slots of the barrel cover are respectively aligned with the multiple hook plates and then installed into the upper port of the raw material barrel. The multiple hook plates hook the barrel cover to prevent the barrel cover from falling off from the raw material barrel, thereby improving reliability.

[0011] Preferably, it also includes two baffles, two spring sheets and a push cylinder 2, the two baffles are symmetrically hinged on the upper end surface of the filter membrane plate 1, one end of the two spring sheets is connected to the filter membrane plate 1, and the other ends of the two spring sheets are respectively connected to the two baffles, and the elastic force of the two spring sheets buckles the two baffles onto the filter membrane plate 1. After the two baffles are buckled onto the filter membrane plate 1, the avoidance hole of the filter membrane plate 1 can be closed, and the avoidance hole is used to avoid the upper end of the vertical pipe. The fixed end of the push cylinder 2 is installed on the outer wall of the high-pressure tank, and the upper end of the piston rod of the push cylinder 2 is connected to the upper cover; in the raw material barrel After the plant powder is squeezed by the barrel cover, the upper cover is disconnected from the high-pressure tank, and the piston rod of the push cylinder 2 is extended to lift the upper cover, so that the push cylinder 1 drives the barrel cover to rise, and the barrel cover is hooked by multiple hook plates, so that the raw material barrel is lifted out of the high-pressure tank. In this process, the filter membrane plate 1 rises synchronously. When the filter membrane plate 1 is separated from the upper end of the vertical pipe, the elastic force of the two spring sheets buckles the two baffles onto the filter membrane plate 1, so that the two baffles close the avoidance holes of the filter membrane plate 1, thereby preventing the plant powder in the raw material barrel from leaking through the avoidance holes of the filter membrane plate 1, and facilitating the removal of the plant powder.

[0012] Preferably, it also includes a liquid feeding pipe and a lifting filter plate, a bottom plate is arranged at the bottom of the raw material barrel, the bottom plate is located below the filter membrane plate 1, the upper end of the liquid feeding pipe is connected with the bottom plate of the raw material barrel, the upper end of the liquid feeding pipe is communicated with the bottom of the raw material barrel, the lower end of the liquid feeding pipe extends into the bottom of the inner tank frame, the lifting filter plate is lifted and slidably installed on the lower part of the inner tank frame, a filter membrane of the same model as the lower filter membrane is arranged on the lifting filter plate, a sliding hole matching the liquid feeding pipe is arranged on the lifting filter plate, and the liquid feeding pipe is slidably connected with the lifting filter plate through the sliding hole; the mixed extract of anhydrous ethanol and vegetable oil is collected to the bottom of the raw material barrel through the micropores of the filter membrane plate 1 and is input into the bottom of the inner tank frame and the lifting filter plate through the liquid feeding pipe, the anhydrous ethanol in the mixed extract enters the chamber of the high-pressure tank through the filter membrane of the lifting filter plate and the micropores of the lower filter membrane, so that the vegetable oil is enriched between the bottom of the inner tank frame and the lifting filter plate, further concentrating the vegetable oil and improving the purity of the vegetable oil extraction.

[0013] Preferably, the solvent and fat collection system includes a three-way valve, an oil delivery pipe, an oil storage tank, a breathable cap, a solvent pipe and a solvent tank. An oil storage chamber is arranged inside the oil storage tank, and a liquid storage chamber is arranged inside the solvent tank. The main channel of the three-way valve is connected to the lower end of the vertical pipe, one end of the oil delivery pipe is connected to a secondary channel of the three-way valve, and the other end of the oil delivery pipe extends into the upper part of the oil storage chamber of the oil storage tank. A heater 2 is installed inside the oil storage tank, and a breathable cap is installed on the upper part of the oil storage tank. One end of the solvent pipe is connected to the other secondary channel of the three-way valve, and the other end of the solvent pipe is connected to the solvent The bottom of the liquid storage chamber of the box is connected; the three-way valve connects the solvent pipe with the vertical pipe, and at this time, the anhydrous ethanol in the liquid storage chamber of the solvent box is input into the raw material barrel through the solvent pipe, the three-way valve and the vertical pipe, or the anhydrous ethanol in the high-pressure tank is recovered to the liquid storage chamber of the solvent box through the branch pipe 1, the vertical pipe, the three-way valve and the solvent pipe, thereby realizing the input and recovery of anhydrous ethanol; the three-way valve connects the oil delivery pipe with the vertical pipe, and at this time, the vegetable oil at the lower part of the inner tank frame is input into the oil storage chamber of the oil storage tank through the vertical pipe, the three-way valve and the oil delivery pipe, thereby realizing the collection of vegetable oil.

[0014] A plant oil extraction process of the present invention uses the plant oil extraction equipment, comprising the following steps:

[0015] S1. Add the plant powder into the raw material barrel, seal the upper port of the raw material barrel with a barrel cover, and close the upper cover;

[0016] S2, close the valves of branch pipe 1 and branch pipe 2, open the valve at the upper end of the vertical pipe, connect the solvent pipe with the vertical pipe through the three-way valve, start the liquid delivery pump, and deliver the anhydrous ethanol in the liquid storage chamber of the solvent box to the raw material barrel through the solvent pipe, the three-way valve and the vertical pipe, so that the anhydrous ethanol impacts the plant powder and is collected to the bottom of the raw material barrel through the micropores of the filter membrane plate 1 and is input to the bottom of the inner tank frame and between the lifting filter plate through the liquid delivery pipe, and then is collected to the chamber of the high-pressure tank through the micropores of the filter membrane on the lower filter membrane and the lifting filter plate;

[0017] S3. When the liquid level sensor detects that anhydrous ethanol is in place, the valve at the lower end of the vertical pipe is closed, the valve of the branch pipe 1 is opened, and the liquid delivery pump continues to operate, so that the anhydrous ethanol at the bottom of the high-pressure tank is input into the raw material barrel through the branch pipe 1 and the vertical pipe, so that the anhydrous ethanol inside the high-pressure tank continuously refluxes to flush the plant powder. After the anhydrous ethanol flushes the plant powder, the plant oil dissolves in the anhydrous ethanol and enters the lower part of the inner tank frame and the lifting filter plate through the micropores of the filter membrane plate 1 and the liquid delivery pipe. The filter membranes of the lower filter membrane and the lifting filter plate intercept the plant oil, and the anhydrous ethanol enters the chamber of the high-pressure tank through the micropores of the lower filter membrane and the lifting filter plate, and the plant oil is enriched between the lower part of the inner tank frame and the lifting filter plate;

[0018] S4, close the valve at the upper end of the vertical pipe, open the valve at the lower end of the vertical pipe, so that the anhydrous ethanol in the chamber of the high-pressure tank is recovered into the liquid storage chamber of the solvent tank through the branch pipe 1, the vertical pipe, the three-way valve and the solvent pipe;

[0019] S5, the three-way valve connects the oil delivery pipe with the vertical pipe, opens the valve at the lower end of the vertical pipe, and allows the vegetable oil at the lower part of the inner tank frame to be input into the oil storage chamber of the oil storage tank through the vertical pipe, the three-way valve and the oil delivery pipe. In this process, the push cylinder pushes the barrel cover down to squeeze the plant powder in the raw material barrel, thereby collecting the vegetable oil;

[0020] S6. Disconnect the upper cover from the high-pressure tank, extend the piston rod of the push cylinder 2 to lift the upper cover, so that the push cylinder 1 drives the barrel cover to rise, and the barrel cover is hooked by multiple hook plates, so that the raw material barrel is lifted out of the high-pressure tank and the plant powder residue in the raw material barrel is cleaned.

[0021] Compared with the prior art, the present invention has the following beneficial effects: the plant powder is separated independently, the plant powder will not be mixed with anhydrous ethanol and distributed in the high-pressure tank, there is no need to clean the plant powder residue in the high-pressure tank after the extract is discharged, and the anhydrous ethanol and the plant oil are discharged independently in sequence, without the need for subsequent separation of the oil and anhydrous ethanol, and the work efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front cross-sectional structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the axonometric partial cross-sectional structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the axonometric structure of the present invention;

[0025] Figure 4 It is a partial cross-sectional structural schematic diagram of a high-pressure tank;

[0026] Figure 5 It is a structural schematic diagram of the raw material barrel of the present invention being taken out from the high-pressure tank;

[0027] Figure 6 It is a structural diagram of the inner tank frame, raw material barrel and filter membrane plate;

[0028] Figure 7 yes Figure 6 A schematic diagram of the local enlarged structure at point A in the middle;

[0029] Figure 8 It is a structural schematic diagram of the raw material barrel, barrel cover, push cylinder and hook plate;

[0030] Fig. 9 It is a schematic diagram of the structure of the solvent and fat collection system;

[0031] Fig.10 It is a structural schematic diagram of the inner tank frame, raw material barrel, filter membrane plate 1, lower filter membrane, liquid delivery pipe and lifting filter plate.

[0032] Markings in the attached figure: 1. High-pressure tank; 2. Upper cover; 3. Inner tank frame; 4. Raw material barrel; 5. Filter membrane plate 1; 6. Barrel cover; 7. Lower filter membrane; 8. Vertical pipe; 9. Liquid delivery pump; 10. Branch pipe 1; 11. Branch pipe 2; 12. Liquid level sensor; 13. Temperature sensor; 14. Heater 1; 15. Gas filling pipe; 16. Push cylinder 1; 17. Hook plate; 18. Baffle; 19. Spring sheet; 20. Push cylinder 2; 21. Liquid delivery pipe; 22. Lifting filter plate; 23. Three-way valve; 24. Oil delivery pipe; 25. Oil storage tank; 26. Breathing cap; 27. Solvent pipe; 28. Solvent tank. DETAILED DESCRIPTION

[0033] In order to facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive. Example 1

[0034] like Figures 1 to 4 , Figure 6 and Fig.10As shown, a vegetable oil extraction device includes a high-pressure tank 1 and an upper cover 2. A chamber is arranged inside the high-pressure tank 1, an opening communicating with the chamber is arranged at the upper end of the high-pressure tank 1, and the upper cover 2 is installed on the opening of the high-pressure tank 1; it also includes an inner tank frame 3, a raw material barrel 4, a filter membrane plate 5, a barrel cover 6, a lower filter membrane 7, a vertical pipe 8, a liquid delivery pump 9, a branch pipe 10, a branch pipe 2 11 and a solvent and fat collection system. The inner tank frame 3 is installed inside the chamber of the high-pressure tank 1, the raw material barrel 4 is installed on the upper part of the inner tank frame 3, a filter membrane plate 5 is arranged at the bottom of the raw material barrel 4, the filter membrane plate 5 allows oil and anhydrous ethanol to pass through, and the upper end of the raw material barrel 4 is movably mounted A barrel cover 6 is installed, and a lower filter membrane 7 is installed on the lower side wall of the inner liner frame 3 and the bottom of the inner liner frame 3. The lower filter membrane 7 allows anhydrous ethanol to pass through. The upper edge of the lower filter membrane 7 on the side wall of the inner liner frame 3 is connected to the bottom of the raw material barrel 4. A vertical pipe 8 is vertically inserted in the chamber of the high-pressure tank 1. The vertical pipe 8 passes through the lower filter membrane 7 and the filter membrane plate 1 5 at the bottom of the inner liner frame 3 from bottom to top. The upper end of the vertical pipe 8 is located in the raw material barrel 4. A liquid delivery pump 9, a branch pipe 1 10 and a branch pipe 2 11 are installed on the vertical pipe 8. The liquid delivery pump 9 is located below the inner liner frame 3, the branch pipe 1 10 is located at the inner bottom of the high-pressure tank 1, the branch pipe 2 11 is located at the inner bottom of the inner liner frame 3, and the vertical pipe 8 The upper end of the vertical pipe 8, the lower end of the vertical pipe 8, the branch pipe 10 and the branch pipe 2 11 are all equipped with electric control valves, and the solvent and fat collection system are connected to the lower end of the vertical pipe 8; it also includes a liquid level sensor 12, the liquid level sensor 12 is installed on the upper cover 2, the lower end of the liquid level sensor 12 extends into the upper part of the chamber of the high-pressure tank 1, and the liquid level sensor 12 is located above the raw material barrel 4; it also includes a temperature sensor 13 and a heater 14, the temperature sensor 13 is installed on the high-pressure tank 1, the probe of the temperature sensor 13 extends into the chamber of the high-pressure tank 1, and the heater 14 is installed in the chamber of the high-pressure tank 1; it also includes a gas filling pipe 15, the gas filling pipe 15 is installed on the upper cover 2, the lower end of the gas adding pipe 15 extends into the upper part of the chamber of the high-pressure tank 1; it also includes a liquid delivery pipe 21 and a lifting filter plate 22. The bottom of the raw material barrel 4 is provided with a bottom plate, and the bottom plate is located below the filter membrane plate 5. The upper end of the liquid delivery pipe 21 is connected to the bottom plate of the raw material barrel 4, and the upper end of the liquid delivery pipe 21 is communicated with the bottom of the raw material barrel 4. The lower end of the liquid delivery pipe 21 extends into the bottom of the inner tank frame 3. The lifting filter plate 22 is lifted and slidably installed at the lower part of the inner tank frame 3. The lifting filter plate 22 is provided with a filter membrane of the same type as the lower filter membrane 7. The lifting filter plate 22 is provided with a sliding hole matching the liquid delivery pipe 21, and the liquid delivery pipe 21 is slidably connected to the lifting filter plate 22 through the sliding hole.

[0035] During operation, plant powder is added into the raw material barrel 4, the upper port of the raw material barrel 4 is sealed with the barrel cover 6, the upper cover 2 is closed, the valves of the branch pipe 10 and the branch pipe 2 11 are closed, the valve at the upper end of the vertical pipe 8 is opened, the solvent and fat collection system delivers anhydrous ethanol into the lower end of the vertical pipe 8, the liquid delivery pump 9 is turned on, and the anhydrous ethanol is input into the raw material barrel 4 through the vertical pipe 8, so that the anhydrous ethanol impacts the plant powder and then passes through the micropores of the filter membrane plate 1 5 and the lower filter membrane 7 into the chamber of the high-pressure tank 1, the liquid level sensor 12 is used to detect the liquid level of the anhydrous ethanol in the chamber of the high-pressure tank 1, when the anhydrous ethanol submerges the raw material barrel 4, the anhydrous ethanol contacts the liquid level sensor 12, the liquid level sensor 12 sends a signal to the controller, and the controller controls the valve at the lower end of the vertical pipe 8 after receiving the signal. Close, open the valve of branch pipe 10, and the liquid delivery pump 9 continues to run, and the anhydrous ethanol begins to circulate in the chamber of the high-pressure tank 1, so that the anhydrous ethanol at the bottom of the high-pressure tank 1 is input into the raw material barrel 4 through the branch pipe 10 and the vertical pipe 8, so that the anhydrous ethanol inside the high-pressure tank 1 continuously refluxes to flush the plant powder, the heater 14 heats the anhydrous ethanol in the chamber of the high-pressure tank 1, and the probe of the temperature sensor 13 detects the temperature of the anhydrous ethanol, thereby controlling the temperature of the anhydrous ethanol, so that the plant powder can extract the plant oil at a higher temperature, and the gas filling pipe 15 is connected to the external compressed air system to input the high-pressure air treated with negative ions into the space above the chamber of the high-pressure tank 1, so that the plant powder can extract the oil under high pressure, and the anhydrous ethanol flushes the plant powder. Finally, the mixed extract of anhydrous ethanol and vegetable oil is collected to the bottom of the raw material barrel 4 through the micropores of the filter membrane plate 5 and is input into the bottom of the inner liner frame 3 and between the lifting filter plate 22 through the liquid feeding pipe 21. The anhydrous ethanol in the mixed extract enters the chamber of the high-pressure tank 1 through the filter membrane of the lifting filter plate 22 and the micropores of the lower filter membrane 7. The filter membranes of the lower filter membrane 7 and the lifting filter plate 22 intercept the vegetable oil, so that the vegetable oil is enriched between the bottom of the inner liner frame 3 and the lifting filter plate 22. The vegetable oil dissolves in the anhydrous ethanol and enters the lower part of the inner liner frame 3 through the filter membrane plate 5. The anhydrous ethanol enters the chamber of the high-pressure tank 1 through the micropores of the lower filter membrane 7, realizing the circulation flow of anhydrous ethanol to extract the vegetable oil. After the oil extraction in the plant powder is completed, the filter membrane is closed. Close the valve at the upper end of the vertical pipe 8, open the valve at the lower end of the vertical pipe 8, so that the anhydrous ethanol in the chamber of the high-pressure tank 1 is recovered by the solvent and fat collection system through the branch pipe 1 10 and the vertical pipe 8. After the anhydrous ethanol in the chamber of the high-pressure tank 1 is emptied, the anhydrous ethanol mixed with the plant oil at the lower part of the inner tank frame 3 is discharged through the micropores of the lower filter membrane 7. When the anhydrous ethanol is completely discharged, the valve of the branch pipe 1 10 is closed, and the valve of the branch pipe 2 11 is opened, so that the oil enriched in the lower part of the inner tank frame 3 is discharged through the branch pipe 2 11 and the vertical pipe 8. The solvent and fat collection system collects the plant oil, open the upper cover 2 and the barrel cover 6, and clean the plant powder residue in the raw material barrel 4. Compared with the prior art, the plant powder is independently separated, and the plant powder will not be mixed with the anhydrous ethanol and distributed in the high-pressure tank.After the extract is discharged, there is no need to clean the plant powder residue in the high-pressure tank, and the anhydrous ethanol and plant oil are discharged independently in sequence, without the need for subsequent separation of oil and anhydrous ethanol, and the work efficiency is high. Example 2

[0036] like Figures 3 to 7 As shown, on the basis of Example 1, it also includes a push cylinder 16, the fixed end of the push cylinder 16 is installed on the upper cover 2, and the piston rod of the push cylinder 16 passes through the upper cover 2 and is connected to the barrel cover 6; it also includes a plurality of hook plates 17, a plurality of hook plates 17 are installed on the inner wall of the upper port of the raw material barrel 4, and the barrel cover 6 is provided with a card slot matching the plurality of hook plates 17. After the barrel cover 6 is installed into the upper end of the raw material barrel 4, the plurality of hook plates 17 hang the barrel cover 6; it also includes two baffles 18, two spring sheets 19 and a push cylinder 20, and the two baffles 18 are opposite to each other. It is hinged on the upper end surface of the filter membrane plate 5, one end of the two spring sheets 19 is connected to the filter membrane plate 5, and the other ends of the two spring sheets 19 are respectively connected to the two baffles 18. The elastic force of the two spring sheets 19 snaps the two baffles 18 onto the filter membrane plate 5. After the two baffles 18 are snapped onto the filter membrane plate 5, the avoidance hole of the filter membrane plate 5 can be closed. The avoidance hole is used to avoid the upper end of the vertical pipe 8. The fixed end of the push cylinder 20 is installed on the outer wall of the high-pressure tank 1, and the upper end of the piston rod of the push cylinder 20 is connected to the upper cover 2.

[0037] The multiple card slots of the barrel cover 6 are aligned with the multiple hook plates 17 respectively and then installed into the upper port of the raw material barrel 4. The multiple hook plates 17 hook the barrel cover 6 to prevent the barrel cover 6 from falling off the raw material barrel 4. After the anhydrous ethanol in the high-pressure tank 1 is discharged, the piston rod of the push cylinder 16 is extended to push the barrel cover 6 downward, so that the barrel cover 6 presses the plant powder in the raw material barrel 4 and squeezes out the extract in the plant powder, thereby improving the oil extraction efficiency of the plant powder. After the plant powder in the raw material barrel 4 is squeezed by the barrel cover 6, the upper cover 2 is disconnected from the high-pressure tank 1, and the push cylinder The piston rod 20 is extended to lift the upper cover 2, so that the push cylinder 16 drives the barrel cover 6 to rise, and the barrel cover 6 is hooked by multiple hook plates 17, so that the raw material barrel 4 is lifted out of the high-pressure tank 1. In this process, the filter membrane plate 5 is synchronously raised. When the filter membrane plate 5 is separated from the upper end of the vertical pipe 8, the elastic force of the two spring sheets 19 snaps the two baffles 18 onto the filter membrane plate 5, so that the two baffles 18 close the avoidance holes of the filter membrane plate 5, thereby preventing the plant powder in the raw material barrel 4 from leaking through the avoidance holes of the filter membrane plate 5, making it convenient to take out the plant powder. Example 3

[0038] like Figure 1 , Figure 2 , Figure 3 and Fig. 9As shown, on the basis of Example 1, the solvent and fat collection system includes a three-way valve 23, an oil delivery pipe 24, an oil storage tank 25, a breathable cap 26, a solvent pipe 27 and a solvent tank 28. An oil storage chamber is arranged inside the oil storage tank 25, and a liquid storage chamber is arranged inside the solvent tank 28. The main channel of the three-way valve 23 is connected to the lower end of the vertical pipe 8, one end of the oil delivery pipe 24 is connected to a secondary channel of the three-way valve 23, and the other end of the oil delivery pipe 24 extends into the upper part of the oil storage chamber of the oil storage tank 25. A heater 2 is installed inside the oil storage tank 25, and a breathable cap 26 is installed on the upper part of the oil storage tank 25. One end of the solvent pipe 27 is connected to another secondary channel of the three-way valve 23, and the other end of the solvent pipe 27 is connected to the bottom of the liquid storage chamber of the solvent tank 28.

[0039] The three-way valve 23 connects the solvent tube 27 with the vertical pipe 8. At this time, the anhydrous ethanol in the liquid storage chamber of the solvent box 28 is input into the raw material barrel 4 through the solvent tube 27, the three-way valve 23 and the vertical pipe 8, or the anhydrous ethanol in the high-pressure tank 1 is recovered into the liquid storage chamber of the solvent box 28 through the branch pipe 10, the vertical pipe 8, the three-way valve 23 and the solvent tube 27, thereby realizing the input and recovery of anhydrous ethanol; the three-way valve 23 connects the oil delivery pipe 24 with the vertical pipe 8. At this time, the vegetable oil at the lower part of the inner tank frame 3 is input into the oil storage chamber of the oil storage tank 25 through the vertical pipe 8, the three-way valve 23 and the oil delivery pipe 24, thereby realizing the collection of vegetable oil.

[0040] Based on the plant oil extraction equipment of Examples 1, 2 and 3, the plant oil extraction process is as follows:

[0041] S1, adding plant powder into the raw material barrel 4, sealing the upper port of the raw material barrel 4 with the barrel cover 6, and closing the upper cover 2;

[0042] S2, close the valves of branch pipe 10 and branch pipe 2 11, open the valve at the upper end of vertical pipe 8, connect the solvent pipe 27 with vertical pipe 8 through three-way valve 23, start the liquid delivery pump 9, and deliver the anhydrous ethanol in the liquid storage chamber of the solvent box 28 to the raw material barrel 4 through the solvent pipe 27, three-way valve 23 and vertical pipe 8, so that the anhydrous ethanol impacts the plant powder and is collected to the bottom of the raw material barrel 4 through the micropores of the filter membrane plate 1 5 and is input to the bottom of the inner tank frame 3 and between the lifting filter plate 22 through the liquid delivery pipe 21, and then collected to the chamber of the high-pressure tank 1 through the micropores of the filter membrane on the lower filter membrane 7 and the lifting filter plate 22;

[0043] S3, when the liquid level sensor 12 detects that the anhydrous ethanol is in place, the valve at the lower end of the vertical pipe 8 is closed, the valve of the branch pipe 10 is opened, and the liquid delivery pump 9 continues to operate, so that the anhydrous ethanol at the bottom of the high-pressure tank 1 is input into the raw material barrel 4 through the branch pipe 10 and the vertical pipe 8, so that the anhydrous ethanol inside the high-pressure tank 1 continuously refluxes to flush the plant powder. After the anhydrous ethanol flushes the plant powder, the plant oil dissolves in the anhydrous ethanol and enters the lower part of the inner tank frame 3 and the lifting filter plate 22 through the micropores of the filter membrane plate 5 and the liquid delivery pipe 21. The filter membranes of the lower filter membrane 7 and the lifting filter plate 22 intercept the plant oil. The anhydrous ethanol enters the chamber of the high-pressure tank 1 through the micropores of the lower filter membrane 7 and the lifting filter plate 22, and the plant oil is enriched between the lower part of the inner tank frame 3 and the lifting filter plate 22;

[0044] S4, close the valve at the upper end of the vertical pipe 8, open the valve at the lower end of the vertical pipe 8, so that the anhydrous ethanol in the chamber of the high-pressure tank 1 is recovered into the liquid storage chamber of the solvent box 28 through the branch pipe 10, the vertical pipe 8, the three-way valve 23 and the solvent pipe 27;

[0045] S5, the three-way valve 23 connects the oil delivery pipe 24 with the vertical pipe 8, and the valve at the lower end of the vertical pipe 8 is opened, so that the vegetable oil at the lower part of the inner tank frame 3 is input into the oil storage chamber of the oil storage tank 25 through the vertical pipe 8, the three-way valve 23 and the oil delivery pipe 24. In this process, the push cylinder 16 pushes the barrel cover 6 down to squeeze the plant powder in the raw material barrel 4, so as to collect the vegetable oil;

[0046] S6. Disconnect the upper cover 2 from the high-pressure tank 1, extend the piston rod of the push cylinder 20 to lift the upper cover 2, so that the push cylinder 16 drives the barrel cover 6 to rise, and the barrel cover 6 is hooked by multiple hook plates 17, so that the raw material barrel 4 is lifted out of the high-pressure tank 1, and the plant powder residue in the raw material barrel 4 is cleaned.

[0047] like Figures 1 to 10As shown, a plant oil extraction device and process of the present invention, when working, firstly, plant powder is added into the raw material barrel 4, the upper port of the raw material barrel 4 is sealed with the barrel cover 6, and the upper cover 2 is closed; the valves of the branch pipe 10 and the branch pipe 2 11 are closed, the valve at the upper end of the vertical pipe 8 is opened, the three-way valve 23 connects the solvent pipe 27 with the vertical pipe 8, and the liquid delivery pump 9 is turned on to make the anhydrous ethanol in the liquid storage chamber of the solvent box 28 be transported to the raw material barrel 4 through the solvent pipe 27, the three-way valve 23 and the vertical pipe 8, so that the anhydrous ethanol impacts the plant powder and then collects to the bottom of the raw material barrel 4 through the micropores of the filter membrane plate 1 5 and passes through The liquid is input into the bottom of the inner tank frame 3 and between the lifting filter plate 22 through the liquid delivery pipe 21, and then collected into the chamber of the high-pressure tank 1 through the micropores of the filter membrane on the lower filter membrane 7 and the lifting filter plate 22; after that, when the liquid level sensor 12 detects that the anhydrous ethanol is in place, the valve at the lower end of the vertical pipe 8 is closed, the valve of the branch pipe 10 is opened, and the liquid delivery pump 9 continues to operate, so that the anhydrous ethanol at the bottom of the high-pressure tank 1 is input into the raw material barrel 4 through the branch pipe 10 and the vertical pipe 8, so that the anhydrous ethanol inside the high-pressure tank 1 continuously refluxes to flush the plant powder. After the anhydrous ethanol flushes the plant powder, the plant oil dissolves in the anhydrous ethanol and passes through the filter membrane The micropores of plate 15 and the liquid delivery pipe 21 enter between the lower part of the inner tank frame 3 and the lifting filter plate 22, the lower filter membrane 7 and the filter membrane of the lifting filter plate 22 intercept the vegetable oil, and the anhydrous ethanol enters the chamber of the high-pressure tank 1 through the micropores of the lower filter membrane 7 and the lifting filter plate 22, and the vegetable oil is enriched between the lower part of the inner tank frame 3 and the lifting filter plate 22; then the valve at the upper end of the vertical pipe 8 is closed, and the valve at the lower end of the vertical pipe 8 is opened, so that the anhydrous ethanol in the chamber of the high-pressure tank 1 is recovered to the liquid storage chamber of the solvent box 28 through the branch pipe 10, the vertical pipe 8, the three-way valve 23 and the solvent pipe 27; the three-way valve 23 makes the oil delivery pipe 24 is connected with the vertical pipe 8, and the valve at the lower end of the vertical pipe 8 is opened, so that the vegetable oil at the lower part of the inner tank frame 3 is input into the oil storage chamber of the oil storage tank 25 through the vertical pipe 8, the three-way valve 23 and the oil delivery pipe 24. In this process, the push cylinder 16 pushes the barrel cover 6 to descend to squeeze the plant powder in the raw material barrel 4, so as to collect the vegetable oil; finally, the upper cover 2 is disconnected from the high-pressure tank 1, and the piston rod of the push cylinder 20 is extended to lift the upper cover 2, so that the push cylinder 16 drives the barrel cover 6 to rise, and the barrel cover 6 is hooked by multiple hook plates 17, so that the raw material barrel 4 is lifted out of the high-pressure tank 1, and the plant powder residue in the raw material barrel 4 can be cleaned.

[0048] The main functions achieved by the present invention are:

[0049] 1. The plant powder is separated independently, and the plant powder will not be mixed with anhydrous ethanol and distributed in the high-pressure tank. There is no need to clean the plant powder residue in the high-pressure tank after the extract is discharged;

[0050] 2. Anhydrous ethanol and vegetable oil are discharged independently in sequence, and there is no need to separate oil and anhydrous ethanol later, which has high work efficiency;

[0051] 3. Use high temperature and high pressure extraction to improve oil extraction efficiency;

[0052] 4. The plant powder can be automatically taken out from the high-pressure tank 1, which is convenient for cleaning the plant powder;

[0053] 5. Improve the collection efficiency of plant oils by enriching plant oils.

[0054] The installation method, connection method or setting method of the vegetable oil extraction equipment and process of the present invention are all common mechanical methods, and can be implemented as long as they can achieve their beneficial effects; the high-pressure tank 1, upper cover 2, filter membrane plate 5, lower filter membrane 7, liquid delivery pump 9, valve, liquid level sensor 12, temperature sensor 13, heater 14, push cylinder 16, hook plate 17, spring sheet 19, push cylinder 20, filter membrane, three-way valve 23, oil storage tank 25, breathable cap 26, solvent box 28 of the vegetable oil extraction equipment and process of the present invention are purchased on the market, and technical personnel in the industry only need to install and operate them according to the accompanying instruction manual, without the need for technical personnel in this field to make creative labor.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A vegetable oil extraction device, comprising a high-pressure tank (1) and an upper cover (2), wherein a chamber is arranged inside the high-pressure tank (1), an opening communicating with the chamber is arranged at the upper end of the high-pressure tank (1), and the upper cover (2) is mounted on the opening of the high-pressure tank (1); characterized in that: The invention also comprises an inner liner frame (3), a raw material barrel (4), a filter plate 1 (5), a barrel cover (6), a lower filter membrane (7), a vertical pipe (8), a liquid delivery pump (9), a branch pipe 1 (10), a branch pipe 2 (11) and a solvent and fat collection system. The inner liner frame (3) is installed inside the chamber of the high-pressure tank (1), the raw material barrel (4) is installed on the upper part of the inner liner frame (3), a filter plate 1 (5) is arranged at the bottom of the raw material barrel (4), and the filter plate 1 (5) allows oil and anhydrous ethanol to pass through. The barrel cover (6) is movably installed at the upper end of the raw material barrel (4), and a lower filter membrane (7) is installed on the lower side wall of the inner liner frame (3) and the bottom of the inner liner frame (3), and the lower filter membrane (7) allows anhydrous ethanol to pass through. The upper side of the lower filter membrane (7) on the side wall of the inner liner frame (3) The edge of the vertical pipe (8) is connected to the bottom of the raw material barrel (4), the vertical pipe (8) is vertically inserted into the chamber of the high-pressure tank (1), the vertical pipe (8) passes through the lower filter membrane (7) and the filter membrane plate 1 (5) at the bottom of the inner tank frame (3) from bottom to top, the upper end of the vertical pipe (8) is located in the raw material barrel (4), the liquid delivery pump (9), the branch pipe 1 (10) and the branch pipe 2 (11) are installed on the vertical pipe (8), the liquid delivery pump (9) is located below the inner tank frame (3), the branch pipe 1 (10) is located at the inner bottom of the high-pressure tank (1), and the branch pipe 2 (11) is located at the inner bottom of the inner tank frame (3), the upper end of the vertical pipe (8), the lower end of the vertical pipe (8), the branch pipe 1 (10) and the branch pipe 2 (11) are all equipped with electric control valves, and the solvent and fat collection system is connected to the lower end of the vertical pipe (8); It also includes a plurality of hook plates (17), the plurality of hook plates (17) being mounted on the inner wall of the upper end of the raw material barrel (4), the barrel cover (6) being provided with slots matching the plurality of hook plates (17), and after the barrel cover (6) is loaded into the upper end of the raw material barrel (4), the plurality of hook plates (17) will hang the barrel cover (6); It also includes two baffles (18), two spring sheets (19) and a second push cylinder (20), wherein the two baffles (18) are symmetrically hinged on the upper end surface of the first filter membrane plate (5), one end of the two spring sheets (19) is connected to the first filter membrane plate (5), and the other ends of the two spring sheets (19) are respectively connected to the two baffles (18), and the elastic force of the two spring sheets (19) snaps the two baffles (18) onto the first filter membrane plate (5), and after the two baffles (18) are snapped onto the first filter membrane plate (5), the avoidance hole of the first filter membrane plate (5) can be closed, and the avoidance hole is used to avoid the upper end of the vertical pipe (8), the fixed end of the second push cylinder (20) is installed on the outer wall of the high-pressure tank (1), and the upper end of the piston rod of the second push cylinder (20) is connected to the upper cover (2); The invention also comprises a liquid feeding pipe (21) and a lifting filter plate (22). A bottom plate is arranged at the bottom of the raw material barrel (4), the bottom plate is located below the filter membrane plate 1 (5), the upper end of the liquid feeding pipe (21) is connected to the bottom plate of the raw material barrel (4), the upper end of the liquid feeding pipe (21) is communicated with the bottom of the raw material barrel (4), the lower end of the liquid feeding pipe (21) extends into the bottom of the inner tank frame (3), the lifting filter plate (22) is lifting and slidingly installed at the lower part of the inner tank frame (3), the lifting filter plate (22) is provided with a filter membrane of the same type as the lower filter membrane (7), the lifting filter plate (22) is provided with a sliding hole matching the liquid feeding pipe (21), and the liquid feeding pipe (21) is slidingly connected to the lifting filter plate (22) through the sliding hole.

2. A vegetable oil extraction device as claimed in claim 1, characterized in that: It also includes a liquid level sensor (12), which is mounted on the upper cover (2), the lower end of the liquid level sensor (12) extending into the upper part of the chamber of the high-pressure tank (1), and the liquid level sensor (12) is located above the raw material barrel (4).

3. A vegetable oil extraction device as claimed in claim 2, characterized in that: It also includes a temperature sensor (13) and a heater (14), wherein the temperature sensor (13) is mounted on the high-pressure tank (1), a probe of the temperature sensor (13) extends into the chamber of the high-pressure tank (1), and the heater (14) is mounted in the chamber of the high-pressure tank (1).

4. A vegetable oil extraction device as claimed in claim 3, characterized in that: It also includes a gas filling pipe (15), which is installed on the upper cover (2), and the lower end of the gas filling pipe (15) extends into the upper part of the chamber of the high-pressure tank (1).

5. A vegetable oil extraction device as claimed in claim 4, characterized in that: It also includes a push cylinder (16), the fixed end of which is mounted on the upper cover (2), and the piston rod of the push cylinder (16) passes through the upper cover (2) and is connected to the barrel cover (6).

6. A vegetable oil extraction device as claimed in claim 5, characterized in that: The solvent and fat collection system comprises a three-way valve (23), an oil delivery pipe (24), an oil storage tank (25), a breathable cap (26), a solvent pipe (27) and a solvent tank (28); an oil storage chamber is arranged inside the oil storage tank (25); a liquid storage chamber is arranged inside the solvent tank (28); a main channel of the three-way valve (23) is connected to the lower end of the vertical pipe (8); one end of the oil delivery pipe (24) is connected to a secondary channel of the three-way valve (23); the other end of the oil delivery pipe (24) extends into the upper part of the oil storage chamber of the oil storage tank (25); a heater 2 is installed inside the oil storage tank (25); a breathable cap (26) is installed on the upper part of the oil storage tank (25); one end of the solvent pipe (27) is connected to the other secondary channel of the three-way valve (23); and the other end of the solvent pipe (27) is connected to the bottom of the liquid storage chamber of the solvent tank (28).

7. A vegetable oil extraction process, characterized in that: Using the vegetable oil extraction equipment according to claim 6 comprises the following steps: S1, adding plant powder into the raw material barrel (4), sealing the upper end of the raw material barrel (4) with the barrel cover (6), and closing the upper cover (2); S2, closing the valves of branch pipe 1 (10) and branch pipe 2 (11), opening the valve at the upper end of the vertical pipe (8), connecting the solvent pipe (27) with the vertical pipe (8) through the three-way valve (23), and starting the liquid delivery pump (9) to deliver the anhydrous ethanol in the liquid storage chamber of the solvent box (28) to the raw material barrel (4) through the solvent pipe (27), the three-way valve (23) and the vertical pipe (8), so that the anhydrous ethanol impacts the plant powder and is collected at the bottom of the raw material barrel (4) through the micropores of the filter membrane plate 1 (5) and is input into the bottom of the inner tank frame (3) and between the lifting filter plate (22) through the liquid delivery pipe (21), and then is collected into the chamber of the high-pressure tank (1) through the micropores of the filter membrane on the lower filter membrane (7) and the lifting filter plate (22); S3. When the liquid level sensor (12) detects that anhydrous ethanol is in place, the valve at the lower end of the vertical pipe (8) is closed, the valve of the branch pipe 1 (10) is opened, and the liquid delivery pump (9) continues to operate, so that the anhydrous ethanol at the bottom of the high-pressure tank (1) is input into the raw material barrel (4) through the branch pipe 1 (10) and the vertical pipe (8), so that the anhydrous ethanol inside the high-pressure tank (1) continuously flows back to flush the plant powder. After the anhydrous ethanol flushes the plant powder, the plant oil dissolves in the anhydrous ethanol and enters the lower part of the inner tank frame (3) and between the lifting filter plate (22) through the micropores of the filter membrane plate 1 (5) and the liquid delivery pipe (21). The filter membranes of the lower filter membrane (7) and the lifting filter plate (22) intercept the plant oil. The anhydrous ethanol enters the chamber of the high-pressure tank (1) through the micropores of the lower filter membrane (7) and the lifting filter plate (22), and the plant oil is enriched in the lower part of the inner tank frame (3) and between the lifting filter plate (22); S4, closing the valve at the upper end of the vertical pipe (8), and opening the valve at the lower end of the vertical pipe (8), so that the anhydrous ethanol in the chamber of the high-pressure tank (1) is recovered into the liquid storage chamber of the solvent box (28) through the branch pipe 1 (10), the vertical pipe (8), the three-way valve (23) and the solvent pipe (27); S5, the three-way valve (23) connects the oil delivery pipe (24) with the vertical pipe (8), and the valve at the lower end of the vertical pipe (8) is opened, so that the vegetable oil at the lower part of the inner tank frame (3) is input into the oil storage chamber of the oil storage tank (25) through the second branch pipe (11), the vertical pipe (8), the three-way valve (23) and the oil delivery pipe (24). During this process, the first push cylinder (16) pushes the barrel cover (6) down to squeeze the vegetable powder in the raw material barrel (4), thereby collecting the vegetable oil; S6. The upper cover (2) is disconnected from the high-pressure tank (1), and the piston rod of the second push cylinder (20) is extended to lift the upper cover (2), so that the first push cylinder (16) drives the barrel cover (6) to rise, and the barrel cover (6) is hooked by a plurality of hook plates (17), thereby lifting the raw material barrel (4) out of the high-pressure tank (1), and cleaning the plant powder residue in the raw material barrel (4).

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