Process for refining soybean oil at low temperature and refining equipment thereof

Abstract

The invention provides a low-temperature soybean oil refining process and refining equipment thereof, and relates to the technical field of soybean oil refining, the refining equipment comprises a tank body, a feeding pipe body mounted on the tank body and a filtering assembly mounted in the feeding pipe body; the filtering assembly comprises a first-stage filtering piece, a second-stage filtering piece and a third-stage filtering piece; the first-stage filtering piece, the second-stage filtering piece and the third-stage filtering piece are arranged in the feeding pipe body in a stepped manner; after being used for a long time, the first-stage filtering piece, the second-stage filtering piece and the third-stage filtering piece need to be cleaned, so that the problem that filtering holes are blocked by impurities is avoided, during cleaning, the first-stage filtering piece, the second-stage filtering piece and the third-stage filtering piece can be driven by a first driving assembly to turn over by 180 degrees, and meanwhile, the filtering holes are prevented from being blocked by impurities; the collecting assembly is also pushed below the first-stage filtering piece, the second-stage filtering piece and the third-stage filtering piece, and then the first-stage filtering piece, the second-stage filtering piece and the third-stage filtering piece blow impurities blocked in filtering holes into the collecting assembly under the action of the air injection assembly.

Description

Technical Field

[0001] This invention relates to the field of soybean oil refining technology, specifically a process and refining equipment for low-temperature refining of soybean oil. Background Technology

[0002] Soybean oil is an oil extracted from soybeans and is commonly known as "soybean salad oil." It is one of the most commonly used cooking oils. In order to effectively ensure the quality of soybean oil, after the soybeans are pressed, the crude soybean oil will undergo corresponding refining processes, which require the use of appropriate refining equipment and refining technology.

[0003] Patent publication number CN116836755A discloses a soybean oil refining device and its refining process, relating to the technical field of soybean oil refining. The device includes a base with multiple symmetrically arranged feet fixedly connected to its upper surface. A working tank is fixedly connected to the ends of the feet away from the base. Multiple symmetrically arranged discharge ports are provided on the side wall of the working tank away from the base. An annular box is fixedly connected to the outer wall of the working tank away from the base, facing the multiple discharge ports. A support strip is fixedly connected to the inner wall of the annular box away from the working tank. An annular mesh is slidably connected inside the annular box, fitting snugly against the support strip. Multiple recovery ports are provided on the side wall of the annular box near the base, and multiple recovery pipes are fixedly connected to the side wall of the annular box near the base, each facing one of the recovery ports. This invention can continuously remove impurities from crude soybean oil, making it convenient for workers to use. Patent publication number CN117987206A discloses a soybean oil refining device with a filtration function. This invention discloses a soybean oil refining device with a filtration function, belonging to the field of soybean oil refining technology. It includes a refining box, a crude oil input pipe fixedly installed inside the refining box, a crude oil output pipe fixedly installed on the refining box, and a bushing rotatably installed inside the crude oil input pipe. One end of the bushing passes through the crude oil input pipe and is fixedly installed... The refining tank includes a stir bar and an element slot at the bottom. A magnetic stirring assembly is fixedly installed in the element slot. The tank also includes a filter assembly, which is slidably mounted on the crude oil inlet pipe. After the crude oil enters the refining tank through the crude oil inlet pipe, the float plate remains above the liquid surface due to buoyancy. The crude oil forms a swirling flow under the action of the stir bar. The swirling flow pushes the guide plate on the bottom surface of the float plate to enhance the rotation power of the float plate within the ring seat, pushing the circumferentially mounted push plate outward. The push plate pushes the impurities attached to the filter plate into the slag storage tank, reducing the clogging of the filter holes.

[0004] While the aforementioned patents can solve the problem of filtering impurities in soybean oil, they still have the following shortcomings: In actual production, the filter screen is easily clogged by impurities, often requiring workers to disassemble and clean it before reinstalling the cleaned screen onto the filter plate for continued soybean oil filtration. However, cleaning the clogging material is often laborious and time-consuming due to the tightly adhered and complex structure of the impurities, resulting in low cleaning efficiency and significant inconvenience to workers. Summary of the Invention

[0005] The purpose of this invention is to provide a process and refining equipment for low-temperature refining of soybean oil, which aims to solve the problem of inconvenience in cleaning the blockage in the filter screen in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: the process and refining equipment for low-temperature refining of soybean oil include a tank, a feed pipe installed on the tank, and a filter assembly installed inside the feed pipe; The filtration assembly includes a primary filter, a secondary filter, and a tertiary filter. The primary, secondary, and tertiary filters are arranged in a stepped manner within the feed pipe. The feed pipe has an inlet at the top, which corresponds vertically to the primary filter. The feed pipe has an outlet at the bottom, which corresponds vertically to the outlet. The lower end of the primary filter corresponds vertically to the upper inlet of the secondary filter, and the lower end of the secondary filter corresponds vertically to the upper inlet of the tertiary filter. The feed pipe body is provided with a cavity, and a first drive assembly is installed in the cavity. The first drive assembly is drivenly connected to the first-stage filter, the second-stage filter and the third-stage filter. An air jet assembly is provided in the first-stage filter, the second-stage filter and the third-stage filter. The feed pipe is provided with three sets of collection components that are spaced vertically and extend horizontally. The feed pipe is provided with sliding grooves for guiding the collection components to slide. The three sets of collection components are respectively located below the primary filter, the secondary filter and the tertiary filter.

[0007] Preferably, the primary filter element includes a primary rotating shaft, a primary filter plate, a primary bevel gear, and a primary drainage chamber; The primary rotating shaft extends in the left-right direction and rotates within the feed pipe. The primary filter plate extends in the left-right direction and is fixed on the primary rotating shaft. The primary bevel gear is fixed at the end of the primary rotating shaft away from the primary filter plate. The primary drainage chamber is located inside the feed pipe. The upper end of the primary drainage chamber is fixedly connected to the feed inlet, and the lower end of the primary drainage chamber corresponds to the secondary filter element. The primary filter plate is located inside the primary drainage chamber. The first-stage bevel gear is connected to the first drive assembly for transmission.

[0008] Preferably, the secondary filter element includes a secondary rotating shaft, a secondary filter plate, a secondary bevel gear, and a secondary drainage chamber; The secondary rotating shaft extends in the left-right direction and rotates within the feed pipe. The secondary filter plate extends in the left-right direction and is fixed on the secondary rotating shaft. The secondary bevel gear is fixed at the end of the secondary rotating shaft away from the secondary filter plate. The secondary drainage chamber is located inside the feed pipe. The inlet of the secondary drainage chamber corresponds vertically to the outlet of the primary drainage chamber. The lower outlet of the secondary drainage chamber corresponds vertically to the inlet at the top of the tertiary filter element. The secondary filter plate is located inside the secondary drainage chamber.

[0009] Preferably, the three-stage filter element includes a three-stage rotating shaft, a three-stage filter plate, a three-stage bevel gear, and a three-stage drainage cavity; The three-stage rotating shaft extends in the left-right direction and rotates within the feed pipe. The three-stage filter plate extends in the left-right direction and is fixed on the three-stage rotating shaft. The three-stage bevel gear is fixed at the end of the three-stage rotating shaft away from the three-stage filter plate. The three-stage drainage chamber is located inside the feed pipe. The inlet of the three-stage drainage chamber corresponds vertically to the outlet of the two-stage drainage chamber. The outlet at the lower end of the three-stage drainage chamber corresponds vertically to the outlet. The three-stage filter plate is located inside the three-stage drainage chamber.

[0010] Preferably, both the secondary and tertiary drainage cavities are equipped with a dispersion component, which is located above the secondary or tertiary filter plate.

[0011] Preferably, each of the dispersing components includes a fixed sleeve rod, a transmission rod, a bevel gear set, and a rotating funnel; The fixing sleeve is fixed to the inner wall of the secondary drainage cavity and the tertiary drainage cavity; The guide rod is rotatably inserted into the fixed sleeve rod. One end of the guide rod, which is close to the inner wall of the secondary or tertiary drainage cavity, rotates in the feed tube. The other end of the guide rod is connected to a short shaft through a bevel gear set. The rotating drain plate is fixed on the short shaft. The rotating funnel has several through holes on both the top and bottom. The feed tube has a cavity, and a second drive assembly is installed inside the cavity. The second drive assembly is connected to two transmission rods for transmission.

[0012] Preferably, the second drive assembly includes a second drive motor and a chain assembly fixed to the bottom wall of the cavity; The output end of the second drive motor is fixedly connected to the upper guide rod, and the output end of the second drive motor is connected to the lower guide rod through a chain assembly.

[0013] Preferably, the first drive assembly includes a first drive motor fixed in the cavity, three main bevel gears spaced vertically apart, and a vertical shaft extending in the vertical direction; The output end of the first drive motor is fixedly connected to the vertical shaft, and the three main bevel gears are fixed on the vertical shaft. The three main bevel gears mesh with the first-stage bevel gear, the second-stage bevel gear and the third-stage bevel gear respectively.

[0014] Preferably, the primary drainage cavity, the secondary drainage cavity, and the tertiary drainage cavity are provided with left-right extending grooves inside, and the jet assembly is installed in the grooves; The jet assembly includes a third drive motor fixed in the groove, a lead screw fixedly connected to the output end of the third drive motor and extending in the left-right direction, a guide sliding block in the groove, a multi-section telescopic mechanism fixed to the moving block and extending in the front-back direction, and an air gun fixed to the end of the movable section of the multi-section telescopic mechanism. The moving block is threadedly connected to the lead screw.

[0015] Preferably, the specific steps are as follows: S1, the crude soybean oil is poured into the feed pipe through the feed inlet, and then the crude soybean oil flows through the primary filter to the secondary filter. S2, the secondary filter element filters the crude soybean oil a second time, and then the filtered crude soybean oil flows into the tertiary filter element. S3, the three-stage filter element filters the crude soybean oil three times before the crude soybean oil flows into the tank. S4, the crude soybean oil in the tank is cleaned of impurities. In the mixer, the crude oil is fully mixed with a certain proportion of phosphoric acid solution. Then it enters the time-delay tank for further conditioning. The non-hydrated phospholipids in the oil are converted into hydrated phospholipids. Then it enters the degumming centrifuge for separation. The separated oil residue is temporarily stored in the temporary storage tank. S5, after acidification, the oil enters the mixer and is mixed with a certain proportion of alkaline solution, so that the free fatty acids and alkali react to form sodium soap. Then it enters the delayed reaction tank to fully react, and is then pumped to the heater to be heated to a certain temperature. Then it enters the desoap centrifuge for oil-soap separation, and the separated soap residue is temporarily stored in the soap residue tank. S6. The desoaped oil enters the mixer and is mixed with a certain proportion of hot water. At the same time, a small amount of phosphoric acid solution is added to chelate metal ions, which helps to remove impurities such as residual soap. Then it enters the extended reaction tank for full reaction, and then enters the water washing centrifuge for water washing and separation to remove impurities such as residual soap feet. The water-washed oil finally enters the vacuum dryer to remove moisture and other volatile substances, and is pumped to the decolorization section. S7, after being heated by a heater, the alkali-refined oil enters a decolorizing premix tank. It is mixed with a certain proportion of bleaching clay in the decolorizing premix tank and then enters a decolorizing tower for decolorization reaction. The oil and bleaching clay mixture after the decolorization reaction is pumped into a blade filter and then a polishing filter to remove residual bleaching clay from the oil, resulting in decolorized oil with removed pigments, residual soap and metal oxides. S8, the decolorized oil is pumped into the decolorized cleaning oil tank. After the decolorized oil exchanges heat with the deodorized high-temperature oil through the oil-oil energy-saving heat exchanger, it is heated to the required process temperature by the final temperature heater and then enters the deodorization tower for deodorization reaction. The deodorized hot oil recovers heat through the energy-saving device and is cooled to below 40°C. After fine filtration, refined grade 1 oil is obtained.

[0016] The beneficial effects are: 1. After prolonged use, the primary, secondary, and tertiary filter elements need to be cleaned to prevent impurities from clogging the filter holes. During cleaning, the primary, secondary, and tertiary filter elements can be rotated 180° by the first drive component. At the same time, the collection component is pushed below the primary, secondary, and tertiary filter elements. Then, under the action of the jet component, the primary, secondary, and tertiary filter elements blow the impurities clogging the filter holes into the collection component, so as to clean the primary, secondary, and tertiary filter elements and collect the impurities. This not only improves the cleaning efficiency but also prevents the cleaned impurities from flowing back into the tank.

[0017] 2. Crude soybean oil first enters the system through the feed inlet and then flows through the primary filter for initial treatment. Next, the oil enters the secondary filter for secondary filtration. Finally, it undergoes a tertiary filtration process to completely remove impurities. Through these three stages of filtration, impurities in the soybean oil are effectively removed, significantly improving the oil's purity and laying a solid foundation for subsequent refining processes, ensuring efficient refining and stable finished oil quality.

[0018] 3. The dispersion component can evenly disperse crude soybean oil, allowing it to fall in a multi-directional, three-dimensional manner, effectively avoiding concentrated unidirectional flow. This design not only increases the contact area and efficiency between the oil and subsequent processing media, but also helps prevent local blockages or uneven processing, thereby further improving the overall uniformity and stability of refining.

[0019] 4. The air gun can move in the front, back, left and right directions under the action of the third drive motor, lead screw and multi-section telescopic mechanism, so that the air gun can clean the filter holes in different positions, thereby improving the cleaning effect. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram illustrating the usage process of the present invention; Figure 2 This is a schematic diagram of the feed tube body of the present invention; Figure 3 This is a partial cross-sectional structural schematic diagram of the feed tube body of the present invention; Figure 4 In this invention Figure 3 A magnified structural diagram at point A; Figure 5 This is a schematic diagram showing the distribution of the primary, secondary, and tertiary filter elements within the feed pipe of the present invention. Figure 6 This is a schematic diagram of the structure of the first driving component of the present invention adapted to the primary filter element, the secondary filter element and the tertiary filter element; Figure 7 This is a schematic diagram of the structure of the dispersion component of the present invention; Figure 8 This is a schematic diagram of the jet assembly of the present invention; Figure 9 In this invention Figure 8 A magnified structural diagram at point B; Figure 10 This is a partial cross-sectional structural schematic diagram of the fixed sleeve rod of the present invention; Figure 11 In this invention Figure 10 A magnified structural diagram at point C.

[0021] In the diagram: 1. Tank body; 2. Feed pipe; 3. Primary filter element; 301. Primary shaft; 302. Primary filter plate; 303. Primary bevel gear; 304. Primary drainage chamber; 4. Secondary filter element; 401. Secondary shaft; 402. Secondary filter plate; 403. Secondary bevel gear; 404. Secondary drainage chamber; 5. Tertiary filter element; 501. Tertiary shaft; 502. Tertiary filter plate; 503. Tertiary bevel gear; 504. Tertiary drainage chamber; 6. Feed inlet; 7. Discharge outlet; 8. Cavity; 9. First drive assembly; 901. First drive motor; 902. 903 Main bevel gear; 10 Vertical shaft; 10 Jet assembly; 1001 Third drive motor; 1002 Lead screw; 1003 Multi-section telescopic mechanism; 1004 Air gun; 11 Collection assembly; 1101 Collection box; 1102 Handle; 12 Sliding groove; 13 Dispersion assembly; 1301 Fixed sleeve rod; 1302 Conducting rod; 1303 Bevel gear set; 1304 Rotating drain plate; 14 Cavity; 15 Second drive assembly; 1501 Second drive motor; 1502 Chain assembly; 16 Groove; 17 Auxiliary rod; 18 Auxiliary groove. Detailed Implementation

[0022] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0023] A low-temperature refined soybean oil refining device is mainly used for the process of crude soybean oil being poured into tank 1 from inlet 6. It passes through inlet pipe 2. Since filter components are installed in inlet pipe 2, crude soybean oil can be filtered multiple times to improve the filtration effect. Moreover, after long-term use, impurities on the filter components can be cleaned and collected by jet component 10 and collection component 11, which facilitates cleaning and improves work efficiency.

[0024] In this embodiment, as Figures 1-3 As shown, the refining equipment includes a feed pipe body 2 installed on the tank body 1 and a filter assembly installed inside the feed pipe body 2.

[0025] like Figure 3 , Figure 5 and Figure 6As shown, the filtration assembly includes a primary filter element 3, a secondary filter element 4, and a tertiary filter element 5. The primary filter element 3, secondary filter element 4, and tertiary filter element 5 are arranged in a stepped manner inside the feed pipe body 2. The top of the feed pipe body 2 is provided with a feed inlet 6, and the lower part of the feed inlet 6 corresponds vertically to the primary filter element 3. The bottom of the feed pipe body 2 is provided with a discharge outlet 7, and the lower part of the tertiary filter element 5 corresponds vertically to the discharge outlet 7. The lower end discharge outlet of the primary filter element 3 corresponds vertically to the top inlet of the secondary filter element 4, and the lower end discharge outlet of the secondary filter element 4 corresponds vertically to the top inlet of the tertiary filter element 5, so that soybean oil is poured in through the feed inlet 6, and then filtered through the primary filter element 3, secondary filter element 4, and tertiary filter element 5. The filtered soybean oil then flows into the tank body 1 through the discharge outlet 7.

[0026] Specifically, the primary filter element 3 includes a primary rotating shaft 301, a primary filter plate 302, a primary bevel gear 303, and a primary drainage cavity 304. In this embodiment, the primary drainage cavity 304 provides a channel for the drainage of crude soybean oil. The primary rotating shaft 301 extends in the left-right direction and rotates within the feed pipe 2. The primary filter plate 302 extends in the left-right direction and is fixed to the primary rotating shaft 301. The primary bevel gear 303 is fixed to the primary rotating shaft 301 away from the primary filter plate 302. One end; the primary flow chamber 304 is set inside the feed pipe body 2. The upper end of the primary flow chamber 304 is fixedly connected to the feed port 6, and the lower end of the primary flow chamber 304 corresponds to the secondary filter element 4. The primary filter plate 302 is located inside the primary flow chamber 304. When the crude soybean oil is flowing, it can pass through the primary filter plate 302. Since the primary filter plate 302 has several filter holes, it can perform primary filtration of soybean oil. The primary bevel gear 303 is connected to the first drive assembly 9 for transmission.

[0027] The secondary filter element 4 includes a secondary rotating shaft 401, a secondary filter plate 402, a secondary bevel gear 403, and a secondary drainage cavity 404. In this embodiment, the secondary drainage cavity 404 provides a channel for the drainage of crude soybean oil. The secondary rotating shaft 401 extends in the left-right direction and rotates within the feed pipe 2. The secondary filter plate 402 extends in the left-right direction and is fixed on the secondary rotating shaft 401. The secondary bevel gear 403 is fixed at the end of the secondary rotating shaft 401 away from the secondary filter plate 402. The secondary drainage cavity 404 is disposed within the feed pipe 2, and the secondary drainage... The inlet of cavity 404 corresponds vertically to the outlet of primary flow cavity 304, allowing crude soybean oil to flow from primary flow cavity 304 to secondary flow cavity 404. The outlet at the lower end of secondary flow cavity 404 corresponds vertically to the inlet at the top of tertiary filter element 5, and then flows from secondary flow cavity 404 to tertiary filter element 5. Secondary filter plate 402 is located in secondary flow cavity 404. When crude soybean oil flows, it can pass through secondary filter plate 402. Since secondary filter plate 402 has several filter holes, it performs secondary filtration of soybean oil.

[0028] The three-stage filter element 5 includes a three-stage rotating shaft 501, a three-stage filter plate 502, a three-stage bevel gear 503, and a three-stage drainage cavity 504. In this embodiment, the three-stage drainage cavity 504 provides a channel for the drainage of crude soybean oil. The three-stage rotating shaft 501 extends in the left-right direction and rotates within the feed pipe 2. The three-stage filter plate 502 extends in the left-right direction and is fixed on the three-stage rotating shaft 501. The three-stage bevel gear 503 is fixed at the end of the three-stage rotating shaft 501 away from the three-stage filter plate 502. The three-stage drainage cavity 504... The feed inlet of the tertiary drainage chamber 504 and the discharge outlet of the secondary drainage chamber 404 are located inside the feed pipe 2. The discharge outlet at the lower end of the tertiary drainage chamber 504 and the discharge outlet 7 are located inside the discharge pipe 2. The crude soybean oil that has passed through the tertiary drainage chamber 504 will flow into the tank 1 through the discharge outlet 7. The tertiary filter plate 502 is located inside the tertiary drainage chamber 504. When the crude soybean oil is flowing, it can pass through the tertiary filter plate 502. Since the tertiary filter plate 502 has several filter holes, it can perform the final filtration of soybean oil.

[0029] like Figures 3-5 , Figure 7 , Figure 10 and Figure 11 As shown, the dispersing component 13 can evenly disperse the crude soybean oil, allowing it to fall in a multi-directional, three-dimensional manner, effectively avoiding concentrated unidirectional flow.

[0030] Specifically, both the secondary drainage chamber 404 and the tertiary drainage chamber 504 are equipped with a dispersion component 13, which is located above the secondary filter plate 402 or the tertiary filter plate 502, so that the soybean oil can be evenly dispersed onto the secondary filter plate 402 or the tertiary filter plate 502 through the dispersion component 13.

[0031] Each dispersion component 13 includes a fixed sleeve 1301, a guide rod 1302, a bevel gear set 1303, and a rotating drain plate 1304. The fixed sleeve 1301 is fixed to the inner wall of the secondary drainage chamber 404 and the tertiary drainage chamber 504. The guide rod 1302 is rotatably inserted into the fixed sleeve 1301. One end of the guide rod 1302, near the inner wall of the secondary drainage chamber 404 or the tertiary drainage chamber 504, rotates within the feed pipe 2, while the other end of the guide rod 1302 passes through... The bevel gear set 1303 is connected to a short shaft, and the rotating strainer 1304 is fixed on the short shaft. When the transmission rod 1302 rotates, it can drive the rotating strainer 1304 to rotate through the bevel gear set 1303, so as to evenly disperse the soybean oil. The rotating strainer 1304 has several through holes. The feed pipe 2 is provided with a cavity 14, and a second drive assembly 15 is provided in the cavity 14. The second drive assembly 15 is connected to the two transmission rods 1302.

[0032] In this embodiment, the bevel gear set 1303 includes a first bevel gear and a second bevel gear. The first bevel gear is fixed on the transmission rod 1302, and the second bevel gear is fixed on the rotating sump 1304. The first bevel gear and the second bevel gear mesh with each other, causing the transmission rod 1302 to rotate, which in turn drives the rotating sump 1304 to rotate.

[0033] The second drive assembly 15 includes a second drive motor 1501 and a chain assembly 1502 fixed on the bottom wall of the cavity 14. The output end of the second drive motor 1501 is fixedly connected to the upper guide rod 1302. When the second drive motor 1501 is started, the output end of the second drive motor 1501 is connected to the lower guide rod 1302 through the chain assembly 1502, so that the two guide rods 1302 rotate.

[0034] like Figure 3 , Figure 5 and Figure 6As shown, a cavity 8 is provided inside the feed pipe 2, and a first drive assembly 9 is installed inside the cavity 8. The first drive assembly 9 is connected to the primary filter element 3, the secondary filter element 4, and the tertiary filter element 5. An air jet assembly 10 is provided inside the primary filter element 3, the secondary filter element 4, and the tertiary filter element 5, so that after the first drive assembly 9 is activated, it can drive the primary filter element 3, the secondary filter element 4, and the tertiary filter element 5 to flip over. Under the action of the air jet assembly 10, the primary filter element 3, the secondary filter element 4, and the tertiary filter element 5 can clean the debris blocked on the primary filter element 3, the secondary filter element 4, and the tertiary filter element 5.

[0035] Specifically, the first drive assembly 9 includes a first drive motor 901 fixed in the cavity 8, three main bevel gears 902 spaced vertically apart, and a vertical shaft 903 extending in the vertical direction. The output end of the first drive motor 901 is fixedly connected to the vertical shaft 903. The three main bevel gears 902 are fixed on the vertical shaft 903. The three main bevel gears 902 mesh with the first-stage bevel gear 303, the second-stage bevel gear 403, and the third-stage bevel gear 503, respectively. After the first drive motor 901 is started, it can drive the vertical shaft 903 to rotate. When the vertical shaft 903 rotates, it can drive the first-stage bevel gear 303, the second-stage bevel gear 403, and the third-stage bevel gear 503 to rotate through the main bevel gears 902, thereby causing the first-stage filter plate 302, the second-stage filter plate 402, and the third-stage filter plate 502 to flip.

[0036] like Figure 3 , Figure 8 and Figure 9 As shown, the air gun 1004 can move in the front, back, left and right directions under the action of the third drive motor 1001, the lead screw 1002 and the multi-section telescopic mechanism 1003, so that the air gun 1004 can clean the filter holes at different positions.

[0037] Specifically, the primary drainage chamber 304, the secondary drainage chamber 404, and the tertiary drainage chamber 504 are provided with left-right extending grooves 16, and the jet assembly 10 is installed in the grooves 16. The jet assembly 10 includes a third drive motor 1001 fixed in the groove 16, a lead screw 1002 fixedly connected to the output end of the third drive motor 1001 and extending in the left-right direction, a guide sliding block in the groove 16, a multi-section telescopic mechanism 1003 fixed to the moving block and extending in the front-back direction, and an air gun 1004 fixed to the end of the movable section of the multi-section telescopic mechanism 1003. In this embodiment, the multi-section telescopic mechanism 1004... The telescopic mechanism 1003 adopts a multi-section electric telescopic rod or a multi-section hydraulic telescopic rod. The feed pipe 2 has a channel for the air tube of the air gun 1004 to pass through. When the air gun 1004 moves, it can stretch the air tube. When the air gun 1004 shortens, the air tube can retract to avoid the air tube from being strangled. The moving block is threadedly connected to the lead screw 1002 so that after the primary filter plate 302, the secondary filter plate 402 and the tertiary filter plate 502 are flipped, the air gun 1004 can move under the action of the moving block and the multi-section telescopic mechanism 1003 to perform high-pressure spraying on different areas.

[0038] In this embodiment, the third drive motor 1001 is started, which can drive the lead screw 1002 to rotate. The rotation of the lead screw 1002 can move the moving block along the groove 16, thereby adjusting the position of the air gun 1004 in the left and right directions. Then, the multi-section telescopic mechanism 1003 is started, which can adjust the position of the air gun 1004 in the front and back directions to achieve spraying in different areas.

[0039] like Figure 3 and Figure 5 As shown, the feed pipe body 2 is provided with three sets of collection components 11 that are spaced vertically and extend horizontally. In this embodiment, the collection component 11 includes a collection box 1101 and a handle 1102. The handle 1102 is fixed on the collection box 1101. The feed pipe body 2 is provided with a sliding groove 12 for guiding the collection component 11 to slide. The three sets of collection components 11 are located below the primary filter element 3, the secondary filter element 4, and the tertiary filter element 5, respectively. When the primary filter element 3, the secondary filter element 4, and the tertiary filter element 5 are being cleaned, the three sets of collection boxes 1101 can extend directly below the primary filter element 3, the secondary filter element 4, and the tertiary filter element 5 to collect the debris that falls after cleaning. When the collection box 1101 is not in use, it is stored in the sliding groove 12.

[0040] like Figure 3 and Figure 4As shown, an auxiliary rod 17 extending in the vertical direction is fixed on the fixed sleeve rod 1301. A circular auxiliary groove 18 is provided at the bottom of the rotating sluice plate 1304. The auxiliary rod 17 slides within the auxiliary groove 18. When the rotating sluice plate 1304 rotates, the auxiliary rod 17 can support the rotating sluice plate 1304 and improve its stability.

[0041] The specific steps of a low-temperature refined soybean oil refining process are as follows: S1, the crude soybean oil is poured into the feed pipe 2 through the feed inlet 6, and then the crude soybean oil flows through the primary filter element 3 to the secondary filter element 4. S2, the crude soybean oil flowing out from the primary filter element 3 will fall through the dispersion component 13, causing it to fall in a multi-directional and three-dimensional manner, effectively avoiding concentrated unidirectional flow. After the secondary filter element 4 performs secondary filtration on the crude soybean oil, the crude soybean oil after secondary filtration flows into the tertiary filter element 5. S3, the crude soybean oil flowing out from the secondary filter 4 will fall through the dispersion component 13, so that it will be scattered in a multi-directional and three-dimensional manner, effectively avoiding concentrated unidirectional flow. The tertiary filter 5 filters the crude soybean oil three times, and then the crude soybean oil flows into the tank 1. S4, the crude soybean oil in tank 1 is cleaned of impurities. In the mixer, the crude oil is fully mixed with a certain proportion of phosphoric acid solution. Then it enters the time-delay tank for further conditioning. The non-hydrated phospholipids in the oil are converted into hydrated phospholipids. Then it enters the degumming centrifuge for separation. The separated oil residue is temporarily stored in the temporary storage tank. S5, the acidified oil enters the mixer and is mixed with a certain proportion of alkaline solution, so that the free fatty acids and alkali react to form sodium soap. Then it enters the extended reaction tank to fully react, and is then pumped to the heater to be heated to a certain temperature. Then it enters the desoap centrifuge for oil-soap separation. The separated soap residue is temporarily stored in the soap residue tank. S6. The desoaped oil enters the mixer and is mixed with a certain proportion of hot water. At the same time, a small amount of phosphoric acid solution is added to chelate metal ions, which helps to remove impurities such as residual soap. Then it enters the extended reaction tank for full reaction, and then enters the water washing centrifuge for water washing and separation to remove impurities such as residual soap feet. The water-washed oil finally enters the vacuum dryer to remove moisture and other volatile substances, and is pumped to the decolorization section. S7, after being heated by a heater, the alkali-refined oil enters a decolorizing premix tank. It is mixed with a certain proportion of bleaching clay in the decolorizing premix tank and then enters a decolorizing tower for decolorization reaction. The oil and bleaching clay mixture after the decolorization reaction is pumped into a blade filter and then a polishing filter to remove residual bleaching clay from the oil, resulting in decolorized oil with removed pigments, residual soap and metal oxides. S8, the decolorized oil is pumped into the decolorized cleaning oil tank. After the decolorized oil exchanges heat with the deodorized high-temperature oil through the oil-oil energy-saving heat exchanger, it is heated to the required temperature by the final temperature heater and then enters the deodorization tower for deodorization reaction. The deodorized hot oil recovers heat through the energy-saving device and is cooled to below 40°C. After fine filtration, refined first-grade oil is obtained. S9. After prolonged use, the primary filter element 3, secondary filter element 4, and tertiary filter element 5 need to be cleaned. The first drive motor 901 starts, driving the vertical shaft 903 to rotate. When the vertical shaft 903 rotates, it can drive the primary bevel gear 303, secondary bevel gear 403, and tertiary bevel gear 503 to rotate through the main bevel gear 902, causing the primary filter plate 302, secondary filter plate 402, and tertiary filter plate 502 to flip. Then, the air gun 1004 can move in the front, back, left, and right directions under the action of the third drive motor 1001, the lead screw 1002, and the multi-section telescopic mechanism 1003, so that the air gun 1004 can clean the filter holes at different positions. At the same time, the three sets of collection boxes 1101 extend to the bottom of the primary filter plate 302, secondary filter plate 402, and tertiary filter plate 502 to collect the debris that falls after cleaning. When the collection box 1101 is not in use, it is put into the sliding groove 12.

[0042] The embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. The basic concept of the present invention is that through multi-stage filtration, impurities in crude soybean oil can be fully filtered out. After prolonged use, the filter components can be cleaned and collected by the jet assembly 10, greatly improving cleaning efficiency. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A refining apparatus for low-temperature refined soybean oil, characterized in that, It includes a tank body (1), a feed pipe body (2) installed on the tank body (1), and a filter assembly installed inside the feed pipe body (2); The filter assembly includes a primary filter element (3), a secondary filter element (4), and a tertiary filter element (5). The primary filter element (3), the secondary filter element (4), and the tertiary filter element (5) are arranged in a stepped manner inside the feed pipe body (2). The feed pipe body (2) has a feed inlet (6) at the top, and the lower part of the feed inlet (6) corresponds to the primary filter element (3) vertically. The feed pipe body (2) has a discharge outlet (7) at the bottom, and the lower part of the tertiary filter element (5) corresponds to the discharge outlet (7) vertically. The lower end discharge port of the primary filter element (3) corresponds to the upper end inlet of the secondary filter element (4), and the lower end discharge port of the secondary filter element (4) corresponds to the upper end inlet of the tertiary filter element (5). The feed pipe body (2) is provided with a cavity (8), and a first drive assembly (9) is installed in the cavity (8). The first drive assembly (9) is connected to the first-stage filter element (3), the second-stage filter element (4) and the third-stage filter element (5). An air jet assembly (10) is provided in the first-stage filter element (3), the second-stage filter element (4) and the third-stage filter element (5). The feed pipe body (2) is provided with three sets of collection components (11) that are spaced vertically and extend horizontally. The feed pipe body (2) is provided with a sliding groove (12) for guiding the collection components (11) to slide. The three sets of collection components (11) are located below the primary filter element (3), the secondary filter element (4) and the tertiary filter element (5), respectively.

2. The refining equipment for low-temperature refined soybean oil according to claim 1, characterized in that, The primary filter element (3) includes a primary rotating shaft (301), a primary filter plate (302), a primary bevel gear (303), and a primary drainage chamber (304). The first-stage rotating shaft (301) extends in the left and right direction and rotates inside the feed pipe (2). The first-stage filter plate (302) extends in the left and right direction and is fixed on the first-stage rotating shaft (301). The first-stage bevel gear (303) is fixed at the end of the first-stage rotating shaft (301) away from the first-stage filter plate (302). The primary drainage chamber (304) is set inside the feed pipe (2). The upper end of the primary drainage chamber (304) is fixedly connected to the feed inlet (6). The lower end of the primary drainage chamber (304) corresponds to the secondary filter element (4). The primary filter plate (302) is located inside the primary drainage chamber (304). The first-stage bevel gear (303) is connected to the first drive assembly (9) for transmission.

3. The refining equipment for low-temperature refined soybean oil according to claim 2, characterized in that, The secondary filter element (4) includes a secondary rotating shaft (401), a secondary filter plate (402), a secondary bevel gear (403), and a secondary drainage chamber (404). The secondary rotating shaft (401) extends in the left and right direction and rotates inside the feed tube (2). The secondary filter plate (402) extends in the left and right direction and is fixed on the secondary rotating shaft (401). The secondary bevel gear (403) is fixed at the end of the secondary rotating shaft (401) away from the secondary filter plate (402). The secondary drainage chamber (404) is located inside the feed pipe (2). The inlet of the secondary drainage chamber (404) corresponds to the outlet of the primary drainage chamber (304). The outlet at the lower end of the secondary drainage chamber (404) corresponds to the inlet at the top of the tertiary filter element (5). The secondary filter plate (402) is located inside the secondary drainage chamber (404).

4. The refining equipment for low-temperature refined soybean oil according to claim 3, characterized in that, The three-stage filter element (5) includes a three-stage rotating shaft (501), a three-stage filter plate (502), a three-stage bevel gear (503), and a three-stage drainage chamber (504). The three-stage rotating shaft (501) extends in the left and right direction and rotates inside the feed pipe (2). The three-stage filter plate (502) extends in the left and right direction and is fixed on the three-stage rotating shaft (501). The three-stage bevel gear (503) is fixed at the end of the three-stage rotating shaft (501) away from the three-stage filter plate (502). The three-stage drainage cavity (504) is set inside the feed pipe (2). The feed inlet of the three-stage drainage cavity (504) corresponds to the discharge outlet of the two-stage drainage cavity (404) above and below. The discharge outlet at the lower end of the three-stage drainage cavity (504) corresponds to the discharge outlet (7) above and below. The three-stage filter plate (502) is located inside the three-stage drainage cavity (504).

5. The refining equipment for low-temperature refined soybean oil according to claim 4, characterized in that, Both the secondary drainage cavity (404) and the tertiary drainage cavity (504) are equipped with a dispersion component (13), which is located above the secondary filter plate (402) or the tertiary filter plate (502).

6. The refining equipment for low-temperature refined soybean oil according to claim 5, characterized in that, Each of the dispersion components (13) includes a fixed sleeve rod (1301), a transmission rod (1302), a bevel gear set (1303), and a rotating drain plate (1304). The fixing sleeve (1301) is fixed on the inner wall of the secondary drainage cavity (404) and the tertiary drainage cavity (504); The guide rod (1302) is rotatably inserted into the fixed sleeve rod (1301). One end of the guide rod (1302) near the inner wall of the secondary drainage chamber (404) or the tertiary drainage chamber (504) rotates in the feed tube (2). The other end of the guide rod (1302) is connected to a short shaft through a bevel gear set (1303). The rotating drain plate (1304) is fixed on the short shaft. The rotating funnel (1304) has several through holes that are open at both the top and bottom. The feed tube (2) is provided with a cavity (14), and a second drive assembly (15) is provided in the cavity (14). The second drive assembly (15) is connected to two transmission rods (1302) for transmission.

7. The refining equipment for low-temperature refined soybean oil according to claim 6, characterized in that, The second drive assembly (15) includes a second drive motor (1501) and a chain assembly (1502) fixed on the bottom wall of the cavity (14). The output end of the second drive motor (1501) is fixedly connected to the upper guide rod (1302), and the output end of the second drive motor (1501) is connected to the lower guide rod (1302) through the chain assembly (1502).

8. The refining equipment for low-temperature refined soybean oil according to claim 4, characterized in that, The first drive assembly (9) includes a first drive motor (901) fixed in the cavity (8), three main bevel gears (902) spaced apart vertically, and a vertical shaft (903) extending in the vertical direction. The output end of the first drive motor (901) is fixedly connected to the vertical shaft (903), and the three main bevel gears (902) are fixed on the vertical shaft (903). The three main bevel gears (902) mesh with the first-stage bevel gear (303), the second-stage bevel gear (403) and the third-stage bevel gear (503) respectively.

9. The refining equipment for low-temperature refined soybean oil according to claim 4, characterized in that, The primary drainage chamber (304), the secondary drainage chamber (404) and the tertiary drainage chamber (504) are provided with left and right extending grooves (16), and the jet assembly (10) is installed in the grooves (16); The jet assembly (10) includes a third drive motor (1001) fixed in the groove (16), a lead screw (1002) fixedly connected to the output end of the third drive motor (1001) and extending in the left-right direction, a guide sliding block in the groove (16), a multi-section telescopic mechanism (1003) fixed to the telescopic block and extending in the front-back direction, and an air gun (1004) fixed to the end of the movable section of the multi-section telescopic mechanism (1003). The moving block is threadedly connected to the lead screw (1002).

10. A refining process for low-temperature refined soybean oil, characterized in that, The specific steps are as follows: S1, the crude soybean oil is poured into the feed pipe (2) through the feed inlet (6), and then the crude soybean oil flows through the primary filter (3) into the secondary filter (4); S2, the secondary filter (4) filters the crude soybean oil a second time, and then the crude soybean oil after the second filtration flows into the tertiary filter (5). S3, the three-stage filter element (5) filters the crude soybean oil three times, and then the crude soybean oil flows into the tank (1). S4, the crude soybean oil in tank (1) is cleaned of impurities. In the mixer, the crude oil is fully mixed with a certain proportion of phosphoric acid solution. Then it enters the time-delay tank for further conditioning. The non-hydrated phospholipids in the oil are converted into hydrated phospholipids. Then it enters the degumming centrifuge for separation. The separated oil foot is temporarily stored in the temporary storage tank. S5, after acidification, the oil enters the mixer and is mixed with a certain proportion of alkaline solution, so that the free fatty acids and alkali react to form sodium soap. Then it enters the delayed reaction tank to fully react, and is then pumped to the heater to be heated to a certain temperature. Then it enters the desoap centrifuge for oil-soap separation, and the separated soap residue is temporarily stored in the soap residue tank. S6. The desoaped oil enters the mixer and is mixed with a certain proportion of hot water. At the same time, a small amount of phosphoric acid solution is added to chelate metal ions, which helps to remove impurities such as residual soap. Then it enters the extended reaction tank for full reaction, and then enters the water washing centrifuge for water washing and separation to remove impurities such as residual soap feet. The water-washed oil finally enters the vacuum dryer to remove moisture and other volatile substances, and is pumped to the decolorization section. S7, after being heated by a heater, the alkali-refined oil enters a decolorizing premix tank. It is mixed with a certain proportion of bleaching clay in the decolorizing premix tank and then enters a decolorizing tower for decolorization reaction. The oil and bleaching clay mixture after the decolorization reaction is pumped into a blade filter and then a polishing filter to remove residual bleaching clay from the oil, resulting in decolorized oil with removed pigments, residual soap and metal oxides. S8, the decolorized oil is pumped into the decolorized cleaning oil tank. After the decolorized oil exchanges heat with the deodorized high-temperature oil through the oil-oil energy-saving heat exchanger, it is heated to the required process temperature by the final temperature heater and then enters the deodorization tower for deodorization reaction. The deodorized hot oil recovers heat through the energy-saving device and is cooled to below 40°C. After fine filtration, refined grade 1 oil is obtained.

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