A fragrant rapeseed oil pressing process, apparatus and its optimized management system

Abstract

This invention belongs to the field of aromatic rapeseed processing technology, specifically an aromatic rapeseed oil pressing process, apparatus, and optimized management system. The pressing apparatus includes a pretreatment module, an oil extraction module, a filtration module, and a clarification module. The pretreatment module is used to dry and screen the rapeseed raw material. The oil extraction module presses the rapeseed raw material to extract oil, and the resulting crude oil is purified through the filtration and clarification modules. This application incorporates a slag removal chamber inside the scraper, which separates fine solid impurities from the oil as it passes through the interceptor plate. These impurities are then concentrated and confined within the slag removal chamber, and transferred to the top area of ​​the clarification chamber as the scraper moves. Finally, the oil is poured into the upper area of ​​the receiving plate, achieving efficient cleaning of fine oil residue impurities in the rapeseed oil.

Description

Technical Field

[0001] This invention belongs to the field of aromatic rapeseed processing technology, specifically an aromatic rapeseed oil pressing process, apparatus and its optimized management system. Background Technology

[0002] Aromatic rapeseed oil is a type of rapeseed oil with a rich, characteristic flavor profile and a roasted aroma. Its flavor is characterized by a pungent, spicy, and strong taste, combined with roasted and roasted notes. Currently, aromatic rapeseed oil is commonly produced using the pressing method, where the rapeseed is roasted at high temperatures before pressing. This high-temperature roasting process develops the flavor components of aromatic rapeseed oil, primarily consisting of 40-80% glucosinolate degradation products, 10-50% Maillard reaction products, and 0-30% oil oxidation products. The glucosinolate degradation products impart a pungent and spicy flavor, the Maillard reaction products contribute a roasted aroma, and the oil oxidation products give the oil its characteristic flavor. Sensory evaluation results confirm that the characteristic pungent and spicy flavor of rapeseed oil is its dominant flavor profile.

[0003] The pressing process for fragrant rapeseed oil mostly employs traditional physical pressing methods, such as small-scale pressing or screw pressing. Small-scale pressing typically involves roasting the rapeseed before pressing it using hydraulic or mechanical pressure. This method results in a relatively slow oil extraction rate, but it retains the original flavor and nutrients of the rapeseed oil to the greatest extent possible. However, it tends to produce crude oil with a higher content of solid impurities, thus requiring a longer clarification and filtration process.

[0004] Existing clarification equipment uses scraper conveyors to separate and output solid impurities deposited at the bottom during the clarification process. This method is not suitable for separating small, fine oil residue impurities in crude oil. Therefore, the clarified rapeseed oil still contains a large number of fine impurities, which increases the workload of subsequent filtration. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes a strong-aroma rapeseed oil pressing process, apparatus, and its optimized management system.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention proposes a fragrant rapeseed oil pressing device, including a pretreatment module, an oil extraction module, a filtration module and a clarification module. The pretreatment module is used to dry and screen the rapeseed raw material. The oil extraction module presses the rapeseed raw material to extract oil and purifies the crude oil through the filtration module and the clarification module.

[0007] The clarification module includes a clarification box, with an oil inlet and an oil outlet respectively provided on the side walls of the clarification box. An annular circulating scraper conveyor is provided inside the clarification box. A slag discharge chamber is provided inside the clarification box in the area surrounded by the circulating scraper conveyor. An oil sludge scraper conveyor is provided inside the slag discharge chamber. A receiving plate is provided near the top of the clarification box. The receiving plate extends to the top surface of the slag discharge chamber, and the top opening of the slag discharge chamber communicates with the upper part of the receiving plate. A filter plate is provided at the bottom opening of the slag discharge chamber.

[0008] The scraper conveyor has a hollow interior with a slag removal chamber, a transverse liquid inlet on the bottom side wall of the scraper, and a discharge outlet on the top of the scraper. Intercepting rods are evenly arranged at the opening of the liquid inlet, and an intercepting plate is installed inside the slag removal chamber. The intercepting plate is used to separate solid impurities mixed in the flowing crude oil.

[0009] Preferably, the filter element includes an interceptor plate, on which filter holes are evenly distributed, the interceptor plate is rotatably connected to the inner wall of the slag removal chamber, and a torsion spring is provided at the rotatable connection point;

[0010] The bottom of the slag removal chamber is provided with an installation hole, and a top rod is provided inside the clarification tank near the top. The end of the top rod corresponds to the installation hole, and the top rod is connected to the output end of the telescopic device on the inner wall of the clarification tank.

[0011] The mounting hole is provided with a sealing membrane, which is made of elastic material, and the sealing membrane has a through hole in the middle.

[0012] Preferably, a separation screen is provided inside the slag removal chamber near the discharge outlet, and the separation screen divides the interior area of ​​the slag removal chamber into a separation zone and a flow zone;

[0013] The separation zone is surrounded by the separation net and the inner wall of the slag removal chamber. The two ends of the flow zone 25 are respectively connected to the outlet and the inlet, and the interceptor plate is located inside the flow zone 25.

[0014] Preferably, the number of interceptor plates is not less than two, and the interceptor plates are evenly distributed inside the flow area 25; the aperture of the interceptor plate near the liquid inlet is larger than the aperture of the interceptor plate away from the liquid inlet.

[0015] Preferably, guide plates are uniformly arranged inside the separation zone, and the guide plates divide the separation zone into multiple sub-zones. The ends of the guide plates are inclined towards the discharge outlet and connected to the separation net.

[0016] Preferably, the side of the interceptor plate away from the separation net is rotatably connected to the inner wall of the flow area 25, the end of the interceptor plate near the separation net abuts against the outer surface of the separation net, and the contact position between the end of the interceptor plate and the separation net is located in the area between adjacent guide plates.

[0017] Preferably, the portion of the guide plate away from the separation net is provided with a connecting hole, so that adjacent sub-regions can be connected to each other.

[0018] Preferably, the top rod is a tubular structure, and spray holes are evenly arranged on the side wall of the top rod. The inside of the top rod is connected to the rapeseed oil inside the clarification tank through a replenishment pipe.

[0019] A pressing process for fragrant rapeseed oil, wherein the pressing process is applicable to the pressing device described above, and the specific steps of the pressing process include:

[0020] S1, Pre-treatment stage: The rapeseed raw material is first screened using a vibrating screen to separate impurities such as stones, soil and metal fragments from the rapeseed. Then, a dryer or sun-drying method is used to reduce the moisture content of the rapeseed raw material to the range required for pressing.

[0021] S2, pressing and oil extraction stage; the pre-treated rapeseed raw material is fed into the oil extraction module, and the oil is extracted by pressing the rapeseed raw material using a screw oil press. The rapeseed raw material is subjected to increasing pressure as the screw shaft rotates in the pressing chamber, and the crude oil is squeezed out and flows out from the gaps in the pressing cage.

[0022] S3, Filtration stage: The crude oil mixed with impurities is sent into the clarification tank and allowed to settle in the internal clarification chamber. The oil residue and impurities that have settled at the bottom are lifted into the slag discharge chamber by a circulating scraper conveyor and then output by an oil residue scraper conveyor. The settled oil is then fed into the filtration module for further filtration and purification to obtain clarified rapeseed oil.

[0023] An optimized management system for pressing fragrant rapeseed oil is provided. The optimized management system is applicable to the pressing device described above. The optimized management system includes an equipment monitoring module, a quality inspection module, a production scheduling module, an energy management module, and an equipment maintenance module.

[0024] The beneficial effects of this invention are as follows:

[0025] The present invention discloses a strong-aroma rapeseed oil pressing process, apparatus and its optimized management system. In order to improve the cleaning efficiency of fine oil residue impurities, a slag removal chamber is provided inside the scraper. When the scraper moves laterally in the bottom area of ​​the clarification chamber and scrapes off the oil residue impurities accumulated in the bottom area, large pieces of oil residue impurities are located on the outer surface of the scraper and are blocked by the interception rod when they are close to the liquid inlet.

[0026] The liquid portion mixed with solid impurities enters the slag removal chamber and flows upwards due to obstruction. As it passes through the interceptor plate, solid particles of impurities inside the oil are separated and enriched inside the slag removal chamber. They are then intercepted and restricted, allowing them to move synchronously with the scraper. Subsequently, when the scraper moves to the top area of ​​the clarification chamber, the accumulated oil sludge impurities inside are poured into the upper area of ​​the receiving plate along with the mixed oil as the scraper flips, improving the cleaning efficiency of fine oil sludge impurities. Attached Figure Description

[0027] The invention will now be further described with reference to the accompanying drawings.

[0028] Figure 1 This is a perspective view of the clarification module in this invention;

[0029] Figure 2 This is a cross-sectional view of the clarification module in this invention;

[0030] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0031] Figure 4 This is a perspective view of the scraper in this invention;

[0032] Figure 5 This is a cross-sectional view of the scraper in the present invention, with the scraper in an upright position at the bottom of the clarification chamber;

[0033] Figure 6 This is a cross-sectional view of the scraper in the present invention in a horizontal position when it moves vertically upward in the clarification chamber;

[0034] Figure 7 This is a cross-sectional view of the scraper in the present invention with the scraper in an inverted state at the top of the clarification chamber;

[0035] Figure 8 yes Figure 5 A magnified view of a section at point B in the middle;

[0036] Figure 9 This is a flowchart of the pressing process in this invention.

[0037] In the diagram: clarification tank 1, slag discharge chamber 11, oil sludge scraper conveyor 12, receiving plate 13, top rod 14, telescopic device 141, replenishment pipe 142, spray hole 143, circulating scraper conveyor 2, scraper 21, slag removal chamber 22, liquid inlet 221, outlet 222, interceptor plate 223, mounting hole 224, sealing membrane 225, interceptor bar 226, separation net 23, separation zone 24, guide plate 241, sub-zone 242, connecting hole 243, flow zone 25. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1:

[0040] As shown in the attached diagram of the instruction manual. Figures 1-8 As shown, a fragrant rapeseed oil pressing device includes a pretreatment module, an oil extraction module, a filtration module, and a clarification module. The pretreatment module includes existing equipment such as vibrating screens and cleaning screens to screen the rapeseed, separating impurities such as stones, soil, and metal from the rapeseed. The rapeseed is then dried by means of a dryer or sun-drying to bring the moisture content of the rapeseed to a suitable range for pressing, generally 8%-12%. To enhance the flavor, the rapeseed raw material can be roasted at high temperature before pressing.

[0041] The oil extraction module includes existing equipment such as screw presses. Rapeseed raw materials are poured in, pressed to extract oil, and the resulting crude oil is passed into a clarification module. The liquid portion and solid impurities are separated by density differences, and after initial removal of solid impurities, the crude oil is sent to a filtration module. A plate and frame filter press, vacuum filter, or bag filter is used for further filtration to thoroughly remove solid impurities. Depending on the quality requirements of the rapeseed oil, refining equipment can be used to further refine the rapeseed oil after filtration, further improving its quality.

[0042] Specifically, the clarification module includes a clarification chamber 1, with an oil inlet and an oil outlet respectively installed on the inner wall of the clarification chamber 1; a ring-shaped circulating scraper conveyor 2 is installed inside the clarification chamber 1, which includes sprockets, chains and power equipment, etc. The sprockets are located at each right angle of the square clarification chamber, and under the drive of the external motor power equipment, the scraper 21 on the chain is moved through the sprockets to scrape and clean the solid impurities accumulated at the bottom of the clarification chamber;

[0043] Inside the clarification tank 1, in the area surrounded by the circulating scraper conveyor 2, there is a slag discharge chamber 11. Inside the slag discharge chamber 11, there is an oil slag scraper conveyor 12. Inside the clarification tank 1, near the top, there is a receiving plate 13. The receiving plate 13 extends to the top surface of the slag discharge chamber 11, and the top opening of the slag discharge chamber 11 communicates with the upper area of ​​the receiving plate 13. The bottom opening of the slag discharge chamber 11 is equipped with a filter plate.

[0044] The scraper 21 of the circulating scraper conveyor 2 has a hollow interior with a slag removal chamber 22. The bottom side wall of the scraper 21 has a transverse liquid inlet 221, and the top of the scraper 21 has a discharge outlet 222. The opening of the liquid inlet 221 is uniformly provided with intercepting rods 226. The evenly distributed intercepting rods 226 form a mesh structure to intercept large pieces of oil sludge impurities and keep them on the outer surface of the scraper 21. The slag removal chamber 22 is provided with an intercepting plate 223. The intercepting plate 223 is a filter plate structure with filter holes uniformly provided on its surface. The intercepting plate 223 is used to separate impurities mixed in the flowing crude oil.

[0045] Specific workflow: During the rapeseed oil pressing process, the crude oil containing a large amount of solid impurities obtained by the oil extraction module is fed into the clarification chamber inside the clarification tank 1 through the oil inlet and left to stand; the solid oil residue mixed in the crude oil settles downward under the action of gravity and accumulates in the bottom area of ​​the clarification tank 1.

[0046] After the crude oil has been clarified for a period of time, the circulating scraper conveyor 2 is started. The circularly distributed scrapers 21 enter the bottom of the clarification chamber under the drive of the connected chain. They move horizontally from one side of the bottom of the clarification chamber to the other side, then move vertically upward to the sprocket at the top of the clarification chamber after passing the sprocket on the other side. After flipping, they move horizontally again. The vertical projection of the movement trajectory of the scraper 21 inside the clarification chamber is an approximately rectangular circular movement. During the movement, the solid oil residue impurities accumulated in the bottom area of ​​the clarification chamber are scraped and moved with the scraper 21 to the area on the top of the upper clarification chamber located on the side of the receiving plate 13.

[0047] As the scraper 21 moves to the top area and passes the corresponding sprocket, the oil residue and crude oil mixture scraped on the scraper 21 are separated by gravity and centrifugal force during the flipping due to the rotation of the scraper 21. The mixture falls onto the upper surface of the receiving plate 13 and then flows along the upper surface of the receiving plate 13 into the slag discharge chamber 11. Under the stirring action of the oil residue scraper conveyor 12 inside the slag discharge chamber 11, the liquid part of the oil residue mixture flows down through the filter plate at the bottom outlet and returns to the oil inside the clarification tank 1, while the solid impurities are carried by the running oil residue scraper conveyor 12 to the oil residue treatment equipment outside, thus realizing the solid-liquid separation of the crude oil inside the clarification tank 1 and the automated cleaning of the separated oil residue impurities.

[0048] Furthermore, in order to improve the cleaning efficiency of fine oil residue impurities, a slag removal chamber 22 is provided inside the scraper 21. When the scraper 21 moves laterally in the bottom area of ​​the clarification chamber and scrapes off the oil residue impurities accumulated in the bottom area, large pieces of oil residue impurities are located on the outer surface of the scraper 21 and are blocked by the intercepting rod 226 when they are close to the liquid inlet 221; however, the liquid part mixed in the solid impurities can pass through the gap of the intercepting rod 226 and flow into the slag removal chamber 22.

[0049] After the oil enters the slag removal chamber 22, it is obstructed and flows upward. During the process of passing through the interceptor plate 223, the solid particles and impurities inside the oil are separated and then flow out from the discharge port 222 set at the top. As the scraper 21 moves from one side of the bottom of the clarification chamber to the other side, it pushes large pieces of oil slag impurities to adhere to the outer surface and move with them. On the other hand, it causes the fine impurities mixed in the liquid to be enriched into the slag removal chamber 22 when passing through the internal slag removal chamber 22, and is intercepted and restricted, so that it can move synchronously with the scraper 21.

[0050] Subsequently, when scraper 21 moves to the top area of ​​the clarification chamber, the accumulated oil residue impurities inside are poured into the upper area of ​​the receiving plate 13 along with the mixed oil as scraper 21 flips. Regarding how to make the interceptor plate 223 release its restriction effect on fine solid impurities, the interceptor plate 223 can be connected to a micro motor on the inner wall of the slag removal chamber 22. Normally, it is horizontally positioned to intercept and filter oil impurities. When it moves to the upper area of ​​the receiving plate 13, the micro motor is activated to drive the interceptor plate 223 to rotate, so that the restricted solid impurities are no longer intercepted and flow smoothly downward through the discharge port 222, realizing the transfer of the enriched and restricted solid impurities. Regarding how to achieve the restriction and transfer of solid impurities collected inside the slag removal chamber 22, there are various different technical solutions, not limited to the above-described implementation scheme. Any solution that can achieve the above functions can be applied to this application.

[0051] This achieves efficient collection and purification of solid impurities in the crude oil inside the clarification chamber, reduces the content of fine particulate impurities in the crude oil, and improves the quality of rapeseed oil after the clarification process.

[0052] Example 2:

[0053] Based on Embodiment 1, this embodiment provides another possible technical solution to achieve the smooth transfer of solid impurities restricted by the interceptor plate 223; specifically, the interceptor plate 223 is rotatably connected to the inner wall of the slag removal chamber 22, and a torsion spring is provided at the rotatable connection part;

[0054] The bottom of the slag removal chamber 22 is provided with an installation hole 224. A top rod 14 is provided inside the clarification tank 1 near the top. The end of the top rod 14 corresponds to the installation hole 224, and the top rod 14 is connected to the output end of the telescopic device 141 on the inner wall of the top of the clarification tank 1.

[0055] Specific workflow: Based on the specific workflow in Example 1, as the scraper 21 moves laterally at the bottom of the clarification chamber, it pushes the solid oil residue impurities that have settled and accumulated in the bottom area of ​​the clarification chamber. Larger solid impurities are pushed by the scraper 21 and move with the outer surface of the scraper 21; while smaller impurities flow with the oil into the inlet 221 at the bottom of the scraper 21, enter the slag removal chamber 22 and pass through the interceptor plate 223 inside the slag removal chamber 22. The small impurities remain on the surface of the interceptor plate 223, while the oil flows smoothly through the interceptor plate 223 and out from the outlet 222 at the top. Solid particulate impurities are restricted by the interceptor plate 223 inside the slag removal chamber 22, thereby achieving the collection of small solid impurities mixed in the oil.

[0056] Subsequently, when the scraper 21 moves to the upper area of ​​the receiving plate 13, as the scraper 21 flips, the discharge port 222 is located in the bottom area of ​​the receiving plate 13. When the receiving plate 13 moves close to the corresponding position, the movement of the receiving plate 13 is stopped, and the telescopic device 141 connected to the top rod 14 is activated, so that the top rod 14 moves down and passes through the mounting hole 224 on the slag removal chamber 22 and extends into the slag removal chamber 22, and contacts the intercepting plate 223 inside the slag removal chamber 22. The pressure causes the intercepting plate 223 to flip along the rotating connection part, and the end of the top rod 14 extends out from the discharge port 222. At this point, the solid impurities trapped inside the slag removal chamber 22 are no longer restricted. As the continuously extending push rod 14 passes through the flipped interceptor plate 223 and flows out from the discharge port 222, the push rod 14 then resets, and the interceptor plate 223 rotates back to its original position under the action of the torsion spring. The above process is repeated, and the insertion and reset of the push rod 14 are repeated many times, so that the fine solid impurities accumulated inside the slag removal chamber 22 are pushed away from the slag removal chamber 22 by the push rod 14, thereby realizing the cleaning of solid impurities inside the slag removal chamber 22 and also realizing the automated and efficient transfer and cleaning of solid impurities in the bottom area of ​​the clarification chamber.

[0057] Example 3:

[0058] Based on Embodiment 2, a separation net 23 is provided inside the slag removal chamber 22 near the discharge port 222. The separation net 23 divides the internal area of ​​the slag removal chamber 22 into a separation zone 24 and a flow zone 25.

[0059] The separation zone 24 is surrounded by the separation net 23 and the inner wall of the slag removal chamber 22. The two ends of the flow zone 25 are connected to the discharge port 222 and the liquid inlet 221 respectively, and the interceptor plate 223 is located inside the flow zone 25.

[0060] The mounting hole 224 is provided with a sealing membrane 225. The sealing membrane 225 is made of elastic material and has a through hole in the middle part.

[0061] Specific workflow: Based on the specific workflow in Example 2, during the lateral movement of the scraper 21, after the oil enters the slag removal chamber 22, part of the oil enters the flow zone 25 and passes through the interceptor plate 223 in the flow zone 25, separating the solid impurities contained in the oil; part of the oil is blocked at the interceptor plate 223 and passes through the separation net 23 on one side into the separation zone 24, and then flows out from the separation zone 24 and flows out through the discharge port 222 at the end of the flow zone 25; this allows part of the oil to bypass the interceptor plate 223, reducing the load on the interceptor plate 223, and the oil passing through the separation zone 24 leaves the solid impurities on the outer surface of the separation net 23;

[0062] The separation mesh 23 increases the filtration and purification efficiency for solid particulate impurities in the oil, expands the distribution range of particulate impurities, and reduces the aggregation of particulate impurities, thereby reducing the likelihood of blockage in the flow zone 25. Furthermore, when the scraper 21 moves vertically upwards after moving to the clarification chamber side, refer to the attached instruction manual. Figures 5-6 At this time, the scraper 21 changes from the upright position to the horizontal position. In the horizontal position, the liquid inlet 221 and the outlet 222 are located on the horizontal sides of the slag removal chamber 22 and are both higher than the separation zone 24 in the vertical direction. The sealing membrane 225 inside the mounting hole 224 plays the role of intercepting the oil. This causes the residual oil to be confined inside the slag removal chamber 22 and enter the separation zone 24 under the action of gravity, while leaving solid impurities in the flow zone 25, so that solid-liquid separation is achieved inside the slag removal chamber 22.

[0063] As the scraper 21 moves to the top and flips to an inverted state, the highly fluid liquid oil, filtered and purified in the separation zone 24, is accelerated from the inside to the outside of the separation screen 23 under the action of gravity. This causes the separation screen 23 to be flushed from the inside out, causing solid impurities on the outer surface of the separation screen 23 to be separated out. At the same time, the movement of the push rod 14 squeezes the sealing membrane 225, causing its central through hole to deform and expand. The push rod 14 then passes through the central through hole of the sealing membrane 225 and extends into the inner wall of the flow zone 25, causing the interceptor plate 223 to be squeezed and flipped. This assists the oil flowing out of the separation zone 24 to flow out and flush the solid impurities separated inside the flow zone 25. The oil then loses its accelerated passage through the open interceptor plate 223 and flows from the outlet 222 to the upper side of the receiving plate 13, thus cleaning the solid impurities inside the slag removal chamber 22 and ensuring the normal passage of the separation screen 23 inside the slag removal chamber 22, thereby improving the purification efficiency of crude oil solid impurities.

[0064] Example 4:

[0065] Based on Example 3, the number of interceptor plates 223 is not less than two, and the interceptor plates 223 are evenly arranged inside the flow area 25; the aperture of the interceptor plate 223 near the liquid inlet 221 is larger than the aperture of the interceptor plate 223 far from the liquid inlet 221.

[0066] Specific workflow: Based on the specific workflow in Example 3, multiple interceptor plates 223 are set inside the flow area 25. As the oil flows along the flow area 25 to the outlet 222, it needs to pass through multiple layers of interceptor plates 223 to achieve multiple filtration and purification of the oil. Furthermore, the interceptor plates 223 near the inlet 221 have larger pore sizes, so that larger impurities in the oil are intercepted by the interceptor plates 223 near the inlet 221, while smaller impurities enter the next layer of interceptor plates 223 with the flow of oil. Subsequently, smaller impurities are intercepted by interceptor plates 223 with smaller pore sizes. In this way, by using the difference in pore size, solid impurities of different sizes are intercepted separately and distributed to different interceptor plates 223. This ensures that the oil is fully filtered and purified while effectively preventing solid impurities from being too concentrated in local areas and affecting the flowability of the flow area 25, making the purification of the oil smoother.

[0067] Example 5:

[0068] Based on Embodiment 4, guide plates 241 are uniformly arranged inside the separation zone 24. The guide plates 241 divide the separation zone 24 into multiple sub-zones 242. The ends of the guide plates 241 are inclined towards the outlet 222 and connected to the separation net 23.

[0069] The side of the interceptor plate 223 away from the separation net 23 is rotatably connected to the inner wall of the flow area 25. The end of the interceptor plate 223 near the separation net 23 abuts against the outer surface of the separation net 23, and the contact position between the end of the interceptor plate 223 and the separation net 23 is located in the area between adjacent guide plates 241.

[0070] Specific workflow: Based on the specific workflow in Example 4, when the oil enters the flow zone 25 from the inlet 221, it first contacts the first interceptor plate 223. Some of the oil passes through the interceptor plate 223 and continues to flow, while some of the oil, due to obstruction, passes through the separation net 23 on one side and enters the first sub-zone 242. After continuing to flow, it is intercepted by the guide plate 241 and passes through the separation net 23 again along the surface of the guide plate 241, entering the gap area between the first and second interceptor plates 223. The oil that directly passes through the first interceptor plate 223 contacts the second interceptor plate 223 and repeats the above process until the oil flows out from the outlet 222. In this way, the flow path of the oil is controlled, so that its residence time in the slag removal chamber 22 is increased, and it repeatedly contacts the separation net 23 and each interceptor plate 223. This makes the impurities more evenly dispersed on the surface of the separation net 23 and the interceptor plate 223, reducing the local concentration of solid impurities that cause blockage in the flow zone 25.

[0071] Furthermore, when the scraper 21 flips to a horizontal position and moves vertically upward, the oil remaining in the slag removal chamber 22 passes through the separation screen 23 and enters the separation zone 24. Under the action of the guide plate 241, it is evenly distributed to each sub-zone 242. Because the guide plate 241 is provided with a connecting hole 243 at the part away from the separation screen 23, the adjacent sub-zones 242 are interconnected. In this way, the oil flows between each sub-zone 242 through the connecting hole 243, so that the oil level in each sub-zone 242 is level, and the oil in the separation zone 24 is more evenly distributed in each sub-zone 242.

[0072] As the scraper 21 moves to its highest point and flips again, the inverted scraper 21 causes the oil in the sub-zone 242 to impact the corresponding separation net 23 sections along the guide plate 241 under the action of gravity, making the scouring effect on the separation net 23 more evenly distributed. Furthermore, because the extension of the push rod 14 pushes the interceptor plate 223 to flip, and the interceptor plate 223 corresponds one-to-one with the guide plate 241, and at this time the extension direction of the end of the interceptor plate 223 corresponds to the surface of the interceptor plate 223 with which the impurities are adhered, the oil flowing out along the guide plate 241 accelerates through the separation net 23 and impacts the surface of the interceptor plate 223, thereby effectively removing the solid impurities intercepted on the surface of the interceptor plate 223 and the separation net 23, and causing the oil mixed with it to flow out from the flow area 25 opened by the push rod 14, realizing the discharge of solid impurities inside the slag removal chamber 22.

[0073] Example 6:

[0074] Based on embodiment 5, the top rod 14 is a tubular structure, and spray holes 143 are evenly arranged on the side wall of the top rod 14. The inside of the top rod 14 is connected to the rapeseed oil inside the clarifying tank 1 through the replenishment pipe 142. The replenishment pipe 142 is a flexible hose, and a pump is installed in the middle.

[0075] Specific workflow: Based on the specific workflow in Example 5, when the telescopic device 141 connected to the top rod 14 is activated, causing the top rod 14 to move down and pass through the mounting hole 224 into the slag removal chamber 22, the pump connected to the replenishment pipe 142 is activated simultaneously. The rapeseed oil located in the middle area inside the clarification tank 1 is drawn into the replenishment pipe 142 and then replenished into the top rod 14. It flows out from the spray holes 143 evenly distributed on the side wall, so that all parts inside the slag removal chamber 22 are flushed and cleaned, and the fine impurities collected therein are fully carried out, ensuring the normal operation of subsequent repeated work.

[0076] Example 7:

[0077] Based on the above embodiments, a pressing process for fragrant rapeseed oil is provided. This pressing process is applicable to the aforementioned pressing apparatus, and the specific steps of the pressing process include:

[0078] S1, Pre-treatment stage: The rapeseed raw material is first screened using a vibrating screen to separate impurities such as stones, soil and metal fragments from the rapeseed. Then, a dryer or sun-drying method is used to reduce the moisture content of the rapeseed raw material to the range required for pressing.

[0079] S2, pressing and oil extraction stage; the pre-treated rapeseed raw material is fed into the oil extraction module, and the oil is extracted by pressing the rapeseed raw material using a screw oil press. The rapeseed raw material is subjected to increasing pressure as the screw shaft rotates in the pressing chamber, and the crude oil is squeezed out and flows out from the gaps in the pressing cage.

[0080] S3: In the filtration stage, the crude oil mixed with impurities is sent into the clarification tank 1 and allowed to settle in the internal clarification chamber. The oil residue and impurities that have settled at the bottom are lifted into the sludge discharge chamber 11 by the circulating scraper conveyor 2, and then the oil residue and impurities are output by the oil residue scraper conveyor 12. The settled oil is then fed into the filtration module for further filtration and purification to obtain clarified rapeseed oil.

[0081] Example 7:

[0082] Based on the above embodiments, a fragrant rapeseed oil pressing optimization management system is provided. This optimization management system is applicable to the aforementioned pressing equipment and includes an equipment monitoring module, a quality inspection module, a production scheduling module, an energy management module, and an equipment maintenance module. Specifically:

[0083] The equipment monitoring module monitors data such as the temperature of the crude oil inside by installing sensors in key parts of the pressing unit, such as the clarification chamber inside the clarification tank 1. It can also be installed on the power motor equipment used to drive the circulating scraper conveyor 2 and the oil residue scraper conveyor 12 to monitor the normal operation of these power sources. The types of sensors can be pressure sensors, temperature sensors, speed sensors, etc., to collect the operating parameters of the equipment in real time, including pressing pressure, temperature, motor speed, material flow rate, etc.

[0084] The quality inspection module is equipped with an automatic sampling device that samples rapeseed oil at set time intervals or yields. The samples are then analyzed using near-infrared spectroscopy, nuclear magnetic resonance, and other technologies to conduct online quality inspections on the rapeseed oil in the oil extraction module. This allows for real-time monitoring of oil quality indicators such as acid value, peroxide value, color, and impurity content.

[0085] The production scheduling module can use production planning and scheduling software to formulate reasonable production plans based on factors such as order demand, raw material supply and equipment capacity, determine the priority and sequence of production tasks, and reasonably arrange the production time and production batches of equipment.

[0086] The energy management module includes energy metering instruments installed on various equipment of the pressing unit, such as electricity meters, flow meters, and gas meters, to monitor and measure the energy consumption of the pressing unit in real time and collect energy consumption data, including the amount and duration of energy consumption such as electricity, water, steam, and gas.

[0087] Based on the analysis of energy data, an intelligent control system is used to optimize and adjust the operating parameters of the equipment, such as automatically adjusting the motor speed according to the production load and optimizing the temperature control of the heating system, so as to reduce energy consumption and improve energy utilization efficiency.

[0088] The equipment maintenance module can utilize fault diagnosis technologies, such as vibration analysis, oil analysis, and fault tree analysis, to perform real-time diagnosis of the equipment's operating status, promptly identify potential faults, and send early warning information to operators through an early warning system so that maintenance measures can be taken in advance.

[0089] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fragrant rapeseed oil pressing device, comprising a pretreatment module, an oil outlet module, a filtration module, and a clarification module; characterized in that, The clarification module includes a clarification box (1), a ring-shaped circulating scraper conveyor (2) is provided inside the clarification box (1), a slag discharge chamber (11) is provided in the area surrounded by the circulating scraper conveyor (2) inside the clarification box (1), and an oil slag scraper conveyor (12) is provided inside the slag discharge chamber (11). A receiving plate (13) is provided inside the clarification tank (1) near the top. The receiving plate (13) extends to the top surface of the slag discharge chamber (11), and the top opening of the slag discharge chamber (11) communicates with the upper area of ​​the receiving plate (13). A filter plate is provided at the bottom opening of the slag discharge chamber (11). The scraper (21) of the circulating scraper conveyor (2) has a hollow interior with a slag removal chamber (22). The bottom side wall of the scraper (21) has a transverse liquid inlet (221), and the top of the scraper (21) has a discharge outlet (222). The opening of the liquid inlet (221) is uniformly provided with intercepting rods (226), and the slag removal chamber (22) is provided with an intercepting plate (223). The intercepting plate (223) is used to separate solid impurities mixed in the flowing crude oil. The filter element includes an interceptor plate (223), on which filter holes are evenly arranged. The interceptor plate (223) is rotatably connected to the inner wall of the slag removal chamber (22), and a torsion spring is provided at the rotatable connection part. The bottom of the slag removal chamber (22) is provided with an installation hole (224), and a top rod (14) is provided in the part of the clarification tank (1) near the top. The end of the top rod (14) corresponds to the installation hole (224), and the top rod (14) is connected to the output end of the telescopic device (141) on the inner wall of the clarification tank (1). The mounting hole (224) is provided with a sealing membrane (225), which is made of elastic material and has a through hole in the middle part; A separation net (23) is provided inside the slag removal chamber (22) near the discharge port (222). The separation net (23) divides the internal area of ​​the slag removal chamber (22) into a separation zone (24) and a flow zone (25). The separation zone (24) is surrounded by the separation net (23) and the inner wall of the slag removal chamber (22). The two ends of the flow zone (25) are connected to the outlet (222) and the inlet (221) respectively, and the interceptor plate (223) is located inside the flow zone (25).

2. The aromatic rapeseed oil pressing device according to claim 1, characterized in that: There are no fewer than two interceptor plates (223), and the interceptor plates (223) are evenly arranged inside the flow area (25); the aperture of the interceptor plate (223) closer to the liquid inlet (221) is larger than the aperture of the interceptor plate (223) farther away from the liquid inlet (221).

3. The aromatic rapeseed oil pressing device according to claim 2, characterized in that: The separation zone (24) is uniformly provided with guide plates (241), which divide the separation zone (24) into multiple sub-zones (242). The ends of the guide plates (241) are inclined toward the outlet (222) and connected to the separation net (23).

4. The aromatic rapeseed oil pressing device according to claim 3, characterized in that: The side of the interceptor plate (223) away from the separation net (23) is rotatably connected to the inner wall of the flow area (25). The end of the interceptor plate (223) near the separation net (23) abuts against the outer surface of the separation net (23), and the contact position between the end of the interceptor plate (223) and the separation net (23) is located in the area between adjacent guide plates (241).

5. The aromatic rapeseed oil pressing device according to claim 4, characterized in that: The guide plate (241) is provided with a connecting hole (243) at the part away from the separation net (23) so that adjacent sub-areas (242) can be connected to each other.

6. The aromatic rapeseed oil pressing device according to claim 5, characterized in that: The top rod (14) is a tubular structure, and spray holes (143) are evenly arranged on the side wall of the top rod (14). The inside of the top rod (14) is connected to the rapeseed oil inside the clarifying tank (1) through the replenishment pipe (142).

7. A pressing process for aromatic rapeseed oil, wherein the pressing process uses the pressing apparatus of any one of claims 1-6, characterized in that, The specific steps of the pressing process include: S1, Pre-treatment stage: The rapeseed raw material is first screened using a vibrating screen to separate impurities such as stones, soil and metal fragments from the rapeseed. Then, a dryer or sun-drying method is used to reduce the moisture content of the rapeseed raw material to the range required for pressing. S2, pressing and oil extraction stage; the pre-treated rapeseed raw material is fed into the oil extraction module, and the oil is extracted by pressing the rapeseed raw material using a screw oil press. The rapeseed raw material is subjected to increasing pressure as the screw shaft rotates in the pressing chamber, and the crude oil is squeezed out and flows out from the gaps in the pressing cage. S3: In the filtration stage, the crude oil mixed with impurities is sent into the clarification tank (1) and allowed to settle in the internal clarification chamber. The oil residue and impurities accumulated at the bottom are lifted into the slag discharge chamber (11) by the circulating scraper conveyor (2), and then the oil residue and impurities are output by the oil residue scraper conveyor (12). The settled oil is then fed into the filtration module for further filtration and purification to obtain clarified rapeseed oil.

8. A management system for optimizing the pressing of aromatic rapeseed oil, characterized in that, The optimized management system is applicable to the pressing device described in any one of claims 1-6. The optimized management system includes an equipment monitoring module, a quality inspection module, a production scheduling module, an energy management module, and an equipment maintenance module.

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