An oil-water separation device for edible oil production

Abstract

The application provides an oil-water separation device for edible oil production, and relates to the technical field of edible oil production and processing, and comprises a pre-filtering structure and a sedimentation separation structure, a communication pipeline is connected between the pre-filtering structure and the sedimentation separation structure, the pre-filtering structure comprises a box body, a first filter plate and a second filter plate are arranged in the box body, the first filter plate and the second filter plate adopt a gradient filtering design of front coarse filtering + rear fine filtering, and the filter holes of the first filter plate and the second filter plate are arranged in a staggered mode; the combination technical scheme of the pre-filtering structure gradient staggered filtering + the sedimentation separation structure linkage demulsification + PLC full-process intelligent control effectively solves the core pain points of low filtering precision, difficult separation of emulsified oil, low automation degree and complicated operation and maintenance of the existing edible oil oil-water separation device, realizes efficient filtering and purification of edible oil, complete demulsification of emulsified oil and accurate separation and recovery of oil, and significantly improves the purity and recovery rate of edible oil.

Description

Technical Field

[0001] This invention relates to the field of edible oil production and processing technology, and in particular to an oil-water separation device for edible oil production. Background Technology

[0002] In the field of edible oil production and processing, oil-water separation is a key process in the purification and refining of oils, which directly affects the finished product quality, resource recovery rate and production process continuity of edible oils. It is widely used in the refining and production of various edible vegetable oils such as soybean oil, peanut oil and rapeseed oil. This invention is an oil-water separation device for edible oil production.

[0003] In existing technologies, most edible oil oil-water separation devices adopt single filtration or simple gravity sedimentation technology. The filtration stage often uses a single filtration structure, resulting in low filtration accuracy, difficulty in separating emulsified oil, and low degree of automation. This fails to meet the high-quality requirements of edible oil production for oil purity, recovery rate, and production efficiency. Summary of the Invention

[0004] This invention relates to an oil-water separation device for edible oil production, in order to solve the technical problems mentioned in the background art above.

[0005] In a first aspect, the present invention provides an oil-water separation device for edible oil production, specifically comprising: a pre-filtration structure and a sedimentation separation structure, wherein a connecting pipe connects the pre-filtration structure and the sedimentation separation structure; the pre-filtration structure includes a housing, wherein a first filter plate and a second filter plate are provided within the housing; the first filter plate and the second filter plate adopt a gradient filtration design of pre-coarse filtration + post-fine filtration, and the filter holes of the first filter plate and the second filter plate are staggered; both the first filter plate and the second filter plate are provided with quick-release structures; and both the first filter plate and the second filter plate are provided with foldable support frames at their lower ends; an adjustable frequency vibration motor is installed on the housing. The sedimentation separation structure includes an inner sedimentation tank, which is internally equipped with a first partition structure, a second partition structure, and a third partition structure. These partition structures divide the inner sedimentation tank into four chambers, from right to left: a primary demulsification sedimentation chamber, a secondary refining sedimentation chamber, a tertiary clarification and impurity removal chamber, and a purified water discharge chamber. Each of the primary demulsification sedimentation chamber, the secondary refining sedimentation chamber, and the tertiary clarification and impurity removal chamber is equipped with a bubble generator and a heater. The number of heaters in the primary demulsification sedimentation chamber, the secondary refining sedimentation chamber, and the tertiary clarification and impurity removal chamber are three, two, and one, respectively. The inner sedimentation tank is equipped with a partition, with a rotating column at the lower end of the partition. An oil-absorbing plate is mounted on the rotating column. The number of oil-absorbing plates above the primary demulsification sedimentation chamber, the secondary refining sedimentation chamber, and the tertiary clarification and impurity removal chamber are four, three, and two, respectively. An outer protective plate is provided outside the inner sedimentation tank, and a PLC intelligent control cabinet is installed on the outer protective plate near the left side of the inner sedimentation tank.

[0006] Furthermore, the pre-filtration structure also includes a base frame, with an elastic support assembly installed between the base frame and the housing. A conical hopper is provided at the bottom of the housing, and the liquid inlet end of the connecting pipe is connected to the conical hopper. A viscosity sensor, a solenoid valve, and a manual valve are installed on the connecting pipe. The viscosity sensor is connected to a PLC intelligent control cabinet to monitor the viscosity of the oil-water mixture in real time and automatically adjust the frequency of the adjustable frequency vibration motor, the flow rate of the bubble generator, and the temperature of the heater.

[0007] Furthermore, two filter cake discharge hoppers are provided on the left side of the housing, which are used in conjunction with the first filter plate and the second filter plate, respectively. Both the first and second filter plates are equipped with handles and baffles. Four support columns are fixed inside the housing. Two sets of insertion holes are provided on the two support columns near the left side of the housing for installing the left ends of the first and second filter plates, respectively. Six sets of insertion holes are provided on the two support columns near the right side of the housing for installing the first filter plate... The quick-release structure at the right end of the first and second filter plates includes a housing, a base plate, a limiting plate, a bottom spring, a button, a pin, and a rebound spring. The base plate is installed at the bottom of the housing, and a groove is provided on the inner wall of the housing. The limiting plate slides up and down in the groove on the inner wall of the housing. A round hole is provided at the top of the housing, and the button is located in the round hole on the housing. The bottom of the button contacts the top of the limiting plate. The bottom spring is installed between the limiting plate and the base plate. The pin moves inside the housing and is provided with a slot that can be used with the limiting plate. The rebound spring is sleeved on the pin.

[0008] Furthermore, a bracket is fixedly installed on the housing, and an ultrasonic echo detection assembly for monitoring the degree of clogging of the first and second filter plates is installed on the bracket. The ultrasonic echo detection assembly includes a single ultrasonic probe, which is installed vertically downward in the area above the first and second filter plates on the top of the housing, and the detection range covers the surfaces of the first and second filter plates.

[0009] Furthermore, a top plate is installed at the upper end of the inner sedimentation tank, and the pre-filtration structure is installed on the top plate. A feed pipe is provided on the right side of the inner sedimentation tank, and the feed pipe is connected to a connecting pipe. A spiral plate is provided inside the feed pipe to reduce the impact force of oil-water transportation. A discharge pipe is connected to the lower end of the feed pipe. The discharge pipe is located at the bottom of the primary demulsification sedimentation chamber, and a discharge hole is provided at the bottom of the discharge pipe.

[0010] Furthermore, the inner sedimentation tank is equipped with a wall-mounted ultrasonic transducer with a frequency of 20-40kHz, which works in conjunction with the bubble generator. The wall-mounted ultrasonic transducer is respectively located in the middle of the primary demulsification sedimentation chamber, the secondary fine sedimentation chamber, and the tertiary clarification and impurity removal chamber. The bottom of the primary demulsification sedimentation chamber, the secondary fine sedimentation chamber, and the clear water purification discharge chamber are all provided with slag discharge ports. The bottom of the clear water purification discharge chamber is connected to the bottom of the tertiary clarification and impurity removal chamber. A clear water discharge pipe is provided on the left side of the clear water purification discharge chamber.

[0011] Furthermore, two gears are fixedly installed on the rotating column, and two motors are installed on the partition plate. Gears are installed on the output shafts of the two motors, and the gears on the output shafts of the motors mesh with the gears on the rotating column. A scraper for scraping grease off the oil-absorbing plate is installed on the partition plate, and a pressure plate is provided at the upper end of the scraper. The scraper is pressed and installed on the partition plate by the pressure plate.

[0012] Furthermore, an oil collecting plate is installed on the front side of the partition, and the front side of the oil collecting plate is sealed to the inner wall of the inner sedimentation tank. An oil outlet pipe is installed on the front side of the inner sedimentation tank.

[0013] Furthermore, three capacitive oil level sensors are installed on the partition plate, and three temperature sensors are installed on the inner sedimentation tank. The three temperature sensors are used to detect the oil temperature in the primary demulsification sedimentation chamber, the secondary fine sedimentation chamber, and the tertiary clarification and impurity removal chamber, respectively.

[0014] Furthermore, the PLC intelligent control cabinet is electrically connected to the adjustable frequency vibration motor, bubble generator, wall-mounted ultrasonic transducer, heater, and capacitive oil level sensor.

[0015] This invention provides an oil-water separation device for edible oil production, which has the following beneficial effects: This invention effectively addresses the core pain points of existing edible oil-water separation devices, such as low filtration accuracy, difficulty in separating emulsified oil, low automation, and cumbersome operation and maintenance, through a combined technical solution of pre-filtration structure gradient staggered filtration, sedimentation separation structure linked demulsification, and PLC full-process intelligent control. It achieves efficient filtration and purification of edible oil, thorough demulsification of emulsified oil, and precise separation and recovery of oil, significantly improving the purity and recovery rate of edible oil while reducing the labor intensity of operation and maintenance and ensuring the quality and safety of edible oil during production. Specifically, the pre-filtration structure's coarse and fine filtration gradient staggered filtration, the adjustable frequency vibration motor, and the multi-mode blockage detection components work together to achieve efficient impurity interception and filter plate anti-clogging; the sedimentation separation structure's bubble generator and ultrasonic transducer linked demulsification, and compartmentalized gradient temperature control achieve thorough separation of emulsified oil and protection of oil quality; the PLC intelligent control cabinet integrates all sensors and actuators, linking pipeline valve groups for control, achieving fully automated operation and maintenance, forming a complete oil purification chain of filtration-demulsification-separation-control, which differs from existing single filtration or simple gravity sedimentation technical solutions.

[0016] Furthermore, in this invention, the demulsification process is achieved through a combination of a bubble generator and an ultrasonic transducer, along with a compartmentalized gradient temperature control design. This effectively disrupts the double-layer structure of emulsified oil in edible oil, promotes the aggregation and floating of tiny oil droplets, and thoroughly separates the oil and water in the oil-water mixture. This significantly improves the edible oil recovery rate, avoids the decline in oil quality caused by emulsified oil residue, and prevents oil oxidation and deterioration caused by abnormal temperatures. It solves the problems of difficult separation of emulsified oil, poor clarification effect, and unstable oil quality in edible oil under traditional gravity sedimentation methods. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0018] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0019] In the attached diagram: Figure 1 A schematic diagram of the overall front portion of the present invention is shown.

[0020] Figure 2 A schematic diagram of the overall rear portion of the present invention is shown.

[0021] Figure 3 A schematic diagram of the filter structure portion of the present invention is shown.

[0022] Figure 4 The present invention is shown Figure 3 A magnified structural diagram of part A in the middle.

[0023] Figure 5A schematic diagram of the structure of the first filter plate portion of the present invention is shown.

[0024] Figure 6 A schematic diagram of the disassembly structure of the quick-release structure of the present invention is shown.

[0025] Figure 7 A schematic diagram of the housing portion of the present invention is shown.

[0026] Figure 8 A schematic diagram of the bottom portion of the housing of the present invention is shown.

[0027] Figure 9 A schematic diagram of the precipitation separation structure of the present invention is shown.

[0028] Figure 10 A schematic diagram of the internal structure of the sedimentation tank of the present invention is shown.

[0029] Figure 11 A schematic diagram of the partition portion of the present invention is shown.

[0030] Figure 12 The present invention is shown Figure 11 A magnified structural diagram of part B.

[0031] Figure 13 A schematic diagram of the feed tube portion of the present invention is shown.

[0032] Figure 14 A schematic diagram of the discharge pipe of the present invention is shown.

[0033] List of reference numerals 1. Pre-filtration structure; 11. Base frame; 111. Elastic support assembly; 12. Box body; 121. Conical bottom hopper; 122. Connecting pipe; 1221. Viscosity sensor; 1222. Solenoid valve; 1223. Manual valve; 123. Filter residue discharge hopper; 124. Adjustable frequency vibration motor; 125. Support column; 13. First filter plate; 131. Handle; 132. Foldable support frame; 133. Baffle plate; 134. Quick release structure; 1341. Shell; 1342. Bottom plate; 1343. Limiting plate; 1344. Bottom spring; 1345. Button; 1346. Pin; 1347. Rebound spring; 14. Second filter plate; 15. Bracket; 151. Ultrasonic echo detection assembly; 2. Sedimentation separation structure; 21. Inner sedimentation tank; 211. First 212. Second partition structure; 213. Third partition structure; 214. Outer protective plate; 22. PLC intelligent control cabinet; 23. Top plate; 24. Primary demulsification and sedimentation chamber; 241. Slag discharge port; 242. Heater; 243. Bubble generator; 244. Wall-mounted ultrasonic transducer; 245. Temperature sensor; 25. Secondary fine sedimentation chamber; 26. Tertiary clarification and impurity removal chamber; 27. Clean water purification and discharge chamber; 271. Clean water discharge pipe; 28. Feed pipe; 281. Spiral plate; 282. Discharge pipe; 2821. Discharge hole; 29. ​​Partition plate; 291. Oil collecting plate; 2911. Oil outlet pipe; 292. Rotating column; 2921. Oil suction plate; 293. Motor; 294. Scraper; 2941. Pressure plate; 295. Capacitive oil level sensor. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. Based on the described 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.

[0035] Please refer to Figures 1 to 14 Example 1: This invention proposes an oil-water separation device for edible oil production, comprising: a pre-filtration structure 1 and a sedimentation separation structure 2, wherein a connecting pipe 122 connects the pre-filtration structure 1 and the sedimentation separation structure 2; the pre-filtration structure 1 includes a housing 12, within which a first filter plate 13 and a second filter plate 14 are provided; the first filter plate 13 and the second filter plate 14 adopt a gradient filtration design of pre-coarse filtration + post-fine filtration, and the filter holes of the first filter plate 13 and the second filter plate 14 are staggered; both the first filter plate 13 and the second filter plate 14 are provided with quick-release structures 134; and both the first filter plate 13 and the second filter plate 14 are provided with foldable support frames 132 at their lower ends; an adjustable frequency vibration motor 124 is installed on the housing 12. The sedimentation separation structure 2 includes an inner sedimentation tank 21. Inside the inner sedimentation tank 21, a first partition structure 211, a second partition structure 212, and a third partition structure 213 are arranged, dividing the inner sedimentation tank 21 into four chambers, from right to left: a primary demulsification sedimentation chamber 24, a secondary fine sedimentation chamber 25, a tertiary clarification and impurity removal chamber 26, and a purified water discharge chamber 27. A bubble generator 243 and a heater 242 are installed in the primary demulsification sedimentation chamber 24, the secondary fine sedimentation chamber 25, and the tertiary clarification and impurity removal chamber 26. The number of heaters 242 in the demulsification sedimentation chamber 24, the secondary purification sedimentation chamber 25, and the tertiary clarification and impurity removal chamber 26 are three, two, and one, respectively. A partition 29 is installed inside the inner sedimentation tank 21. A rotating column 292 is installed at the lower end of the partition 29. An oil suction plate 2921 is installed on the rotating column 292. The number of oil suction plates 2921 above the primary demulsification sedimentation chamber 24, the secondary purification sedimentation chamber 25, and the tertiary clarification and impurity removal chamber 26 are four, three, and two, respectively. An outer protective plate 214 is provided on the outside of the inner sedimentation tank 21. A PLC intelligent control cabinet 22 is installed on the outer protective plate 214 near the left side of the inner sedimentation tank 21.

[0036] In this embodiment of the invention, the pre-filtration structure 1 further includes a base frame 11, with an elastic support assembly 111 installed between the base frame 11 and the housing 12. A conical hopper 121 is provided at the bottom of the housing 12. The inlet end of the connecting pipe 122 is connected to the conical hopper 121, and a viscosity sensor 1221, a solenoid valve 1222, and a manual valve 1223 are installed on the connecting pipe 122. The viscosity sensor 1221 is connected to the PLC intelligent control cabinet 22 and is used to monitor the viscosity of the oil-water mixture in real time and automatically adjust the frequency of the adjustable frequency vibration motor 124, the flow rate of the bubble generator 243, and the temperature of the heater 242. Its function is: the conical... The hopper 121 facilitates the collection and smooth flow of the filtered oil-water mixture into the connecting pipe 122, reducing residue. The viscosity sensor 1221 monitors the viscosity of the oil-water mixture in real time and transmits the signal to the PLC intelligent control cabinet 22. The PLC intelligent control cabinet 22 automatically adjusts the frequency of the adjustable frequency vibration motor 124, the flow rate of the bubble generator 243, and the temperature of the heater 242 to ensure that oil-water mixtures of different viscosities can achieve good filtration and demulsification effects. The solenoid valve 1222 and the manual valve 1223 realize the on / off control of the connecting pipe 122, ensuring pipe isolation during equipment operation and maintenance and failure, and preventing oil leakage or backflow.

[0037] In this embodiment of the invention, two filter residue discharge hoppers 123 are provided on the left side of the housing 12. The two filter residue discharge hoppers 123 are used in conjunction with the first filter plate 13 and the second filter plate 14, respectively. Both the first filter plate 13 and the second filter plate 14 are provided with handles 131 and baffles 133. Four support columns 125 are fixed inside the housing 12. Two sets of insertion holes are provided on the two support columns 125 near the left side of the housing 12, respectively for installing the left ends of the first filter plate 13 and the second filter plate 14. The two support columns near the right side of the housing 12 are also provided with insertion holes. The 125 is provided with six sets of insertion holes, which are used to install the right ends of the first filter plate 13 and the second filter plate 14 respectively. The quick-release structure 134 includes a housing 1341, a base plate 1342, a limiting plate 1343, a bottom spring 1344, a button 1345, a pin 1346, and a rebound spring 1347. The base plate 1342 is installed at the bottom of the housing 1341. A sliding groove is provided on the inner wall of the housing 1341. The limiting plate 1343 slides up and down in the sliding groove on the inner wall of the housing 1341. A round hole is provided at the upper end of the housing 1341. The button 1345 is located in the round hole on the housing 1341. The bottom contacts the top of the limiting plate 1343. The bottom spring 1344 is installed between the limiting plate 1343 and the bottom plate 1342. The pin 1346 is movable inside the housing 1341, and the pin 1346 is provided with a slot that can be used with the limiting plate 1343. The rebound spring 1347 is sleeved on the pin 1346. Its function is: the filter residue discharge hopper 123 is used to collect the impurities filtered and intercepted by the first filter plate 13 and the second filter plate 14, so as to realize the centralized discharge of impurities and avoid the accumulation of impurities affecting the filtration effect; the handle 131 makes it easy for the operator to lift the first filter plate 13 and the second filter plate 14, and stops the material. Plate 133 prevents oil-water mixture from overflowing from the edge of the filter plate during filtration; the holes on the support column 125 are used to fix the first filter plate 13 and the second filter plate 14, and the six sets of holes on the right support column 125 can adjust the installation angle of the filter plate to adapt to different filtration needs; the quick-release structure 134, by pressing the button 1345, drives the limit plate 1343 to compress the bottom spring 1344, releases the limit on the pin 1346, and the rebound spring 1347 pushes the pin 1346 to reset, realizing the quick disassembly and installation of the first filter plate 13 and the second filter plate 14, improving equipment operation and maintenance efficiency and reducing downtime.

[0038] In this embodiment of the invention, a bracket 15 is fixedly installed on the housing 12. An ultrasonic echo detection component 151 for monitoring the degree of clogging of the first filter plate 13 and the second filter plate 14 is installed on the bracket 15. The ultrasonic echo detection component 151 includes a single ultrasonic probe, which is installed vertically downward in the area above the first filter plate 13 and the second filter plate 14 on the top of the housing 12. The detection range covers the surfaces of the first filter plate 13 and the second filter plate 14. Its function is as follows: the bracket 15 is used to fix the ultrasonic echo detection component 151 to ensure the stable installation of the ultrasonic probe; the ultrasonic probe of the ultrasonic echo detection component 151 monitors the accumulation of impurities on the surfaces of the first filter plate 13 and the second filter plate 14 by emitting and receiving ultrasonic waves, judges the degree of clogging of the filter plates in real time, and transmits the clogging signal to the PLC intelligent control cabinet 22 in a timely manner. The PLC intelligent control cabinet 22 adjusts the frequency of the adjustable frequency vibration motor 124 to remove impurities on the surface of the filter plates through vibration, prevents the filter plates from being clogged and affecting the filtration efficiency, and ensures the continuity of edible oil filtration and purification.

[0039] In this embodiment of the invention, a top plate 23 is installed on the upper end of the inner sedimentation tank 21, and a pre-filter structure 1 is installed on the top plate 23. An inlet pipe 28 is provided on the right side of the inner sedimentation tank 21, and the inlet pipe 28 is connected to a connecting pipe 122. A spiral plate 281 for mitigating the impact force of oil-water transport is installed inside the inlet pipe 28. An outlet pipe 282 is connected to the lower end of the inlet pipe 28, and the outlet pipe 282 is located at the bottom of the primary demulsification sedimentation chamber 24. An outlet hole 2821 is provided at the bottom of the outlet pipe 282. Its function is to allow the inlet pipe 28 to... The oil-water mixture transported by the connecting pipe 122 is introduced into the inner sedimentation tank 21. The spiral plate 281 reduces the impact force of the transport of the oil-water mixture, preventing the initially separated oil and water from mixing again due to the impact. The discharge pipe 282 transports the oil-water mixture to the bottom of the primary demulsification sedimentation chamber 24. The discharge hole 2821 makes the oil-water mixture evenly dispersed in the primary demulsification sedimentation chamber 24, increasing the contact area between the oil-water mixture and the bubbles generated by the bubble generator 243 and the heater 242, improving the demulsification and sedimentation effect, and laying the foundation for subsequent oil separation.

[0040] In this embodiment of the invention, a wall-mounted ultrasonic transducer 244 is installed on the inner sedimentation tank 21. The frequency of the wall-mounted ultrasonic transducer 244 is 20-40kHz, and it works in conjunction with the bubble generator 243. The wall-mounted ultrasonic transducer 244 is respectively located in the middle of the primary demulsification sedimentation chamber 24, the secondary fine sedimentation chamber 25, and the tertiary clarification and impurity removal chamber 26. A slag discharge port 241 is provided at the bottom of the primary demulsification sedimentation chamber 24, the secondary fine sedimentation chamber 25, and the purified water discharge chamber 27. The bottom of the purified water discharge chamber 27 is connected to the bottom of the tertiary clarification and impurity removal chamber 26. A purified water discharge pipe 271 is provided on the left side of the purified water discharge chamber 27. The functions are as follows: The wall-mounted ultrasonic transducer 244 is linked with the bubble generator 243 to break the double electric layer structure of the emulsified oil in the oil-water mixture through ultrasonic vibration, promote the aggregation and floating of tiny oil droplets, and improve the oil-water separation efficiency; the slag discharge port 241 is used to discharge the sedimentation impurities at the bottom of the primary demulsification sedimentation chamber 24, the secondary fine separation sedimentation chamber 25 and the purified water discharge chamber 27, so as to avoid the accumulation of impurities affecting the separation effect; the purified water discharge chamber 27 receives the purified water after separation in the tertiary clarification and impurity removal chamber 26, realizing the final separation of water and oil; the purified water discharge pipe 271 is used to discharge the purified water, realizing the recycling of water resources, which meets the needs of green production of edible oil.

[0041] In this embodiment of the invention, two gears are fixedly installed on the rotating column 292, and two electric motors 293 are installed on the partition 29. Gears are installed on the output shafts of both electric motors 293, and these gears mesh with the gears on the rotating column 292. A scraper 294 for scraping grease from the oil-absorbing plate 2921 is installed on the partition 29. A pressure plate 2941 is provided at the upper end of the scraper 294, and the scraper 294 is pressed tightly onto the partition 29 by the pressure plate 2941. An oil-collecting plate 291 is installed on the front side of the partition 29, and the front side of the oil-collecting plate 291 is sealed to the inner wall of the inner sedimentation tank 21. An oil outlet pipe 2911 is installed on the front side of the sedimentation tank 21. Its function is as follows: the motor 293 drives the rotating column 292 to rotate through gear transmission, and the rotating column 292 drives the oil suction plate 2921 to rotate, so that the oil suction plate 2921 can fully contact the floating oil and achieve oil adsorption; the pressure plate 2941 presses and fixes the scraper 294 on the partition plate 29. The scraper 294 is used to scrape the oil adsorbed on the oil suction plate 2921 to avoid oil residue; the oil collection plate 291 is used to collect the oil scraped by the scraper 294, and the oil outlet pipe 2911 discharges the oil collected by the oil collection plate 291, realizing the recycling of oil and improving the edible oil recovery rate.

[0042] In Example 2, based on Example 1, three capacitive oil level sensors 295 are installed on the partition 29, and three temperature sensors 245 are installed on the inner sedimentation tank 21. The three temperature sensors 245 are used to detect the oil temperature in the primary demulsification sedimentation chamber 24, the secondary fine sedimentation chamber 25, and the tertiary clarification and impurity removal chamber 26, respectively. Their function is to accurately monitor the oil layer thickness in each chamber, transmitting the oil level signal in real time to the PLC intelligent control cabinet 22. The PLC intelligent control cabinet 22 then adjusts the output speed of the motor 293 according to the difference in oil layer thickness in each chamber, thereby controlling the rotation of the rotating column 292. The rotation speed of the body is adapted to the oil adsorption requirements of each chamber, ensuring that the oil suction plate 2921 can fully contact the oil and complete effective adsorption in chambers with different oil layer thicknesses, reducing oil residue in each chamber; three temperature sensors 245 detect the oil temperature in the three sedimentation chambers respectively, and transmit the temperature signal to the PLC intelligent control cabinet 22. The PLC intelligent control cabinet 22 adjusts the working state of the heater 242 of each chamber accordingly, realizing independent gradient temperature control of the primary demulsification sedimentation chamber 24, the secondary fine separation sedimentation chamber 25, and the tertiary clarification and impurity removal chamber 26, so that the temperature of each chamber is maintained within a suitable demulsification and sedimentation range, avoiding excessive temperature causing edible oil oxidation and deterioration, and excessive temperature affecting the demulsification effect of emulsified oil, thus ensuring the quality and purity of edible oil after separation.

[0043] In Example 3, based on Examples 1 and 2, the PLC intelligent control cabinet 22 is electrically connected to the adjustable frequency vibration motor 124, the bubble generator 243, the wall-mounted ultrasonic transducer 244, the heater 242, and the capacitive oil level sensor 295. Its function is as follows: The PLC intelligent control cabinet 22 acts as the control core of the equipment, receiving various signals transmitted by the capacitive oil level sensor 295, the temperature sensor 245, the viscosity sensor 1221, and the ultrasonic echo detection component 151. It automatically controls the frequency of the adjustable frequency vibration motor 124, the flow rate of the bubble generator 243, the working status of the wall-mounted ultrasonic transducer 244, and the heating power of the heater 242. This achieves automated control of the entire process of edible oil filtration, demulsification, sedimentation, and oil recovery, reducing manual intervention, lowering labor intensity, improving the stability and consistency of equipment operation, and ensuring that the edible oil filtration and purification effect meets the standards.

[0044] The working principle of this invention: The oil-water mixture to be processed first enters the box 12 of the pre-filtration structure 1, and achieves gradient staggered filtration through the first filter plate 13 and the second filter plate 14. The adjustable frequency vibration motor 124 works to generate vibration to assist filtration. The elastic support component 111 buffers the vibration to ensure the stability of the equipment. The ultrasonic echo detection component 151 monitors the degree of blockage of the first filter plate 13 and the second filter plate 14 in real time and transmits the signal to the PLC intelligent control cabinet 22. The PLC intelligent control cabinet 22 adjusts the vibration frequency of the adjustable frequency vibration motor 124. The impurities trapped by the filter are discharged through the filter residue discharge hopper 123. The filtered oil-water mixture gathers into the conical bottom hopper 121 and flows through the connecting pipe. 122 conveying; viscosity sensor 1221 monitors the viscosity of the mixture in real time and transmits the signal to PLC intelligent control cabinet 22; PLC intelligent control cabinet 22 adjusts the flow rate of bubble generator 243 and the temperature of heater 242 in advance; after the oil-water mixture is cushioned by spiral plate 281 in feed pipe 28, it is evenly discharged into primary demulsification sedimentation chamber 24 through discharge hole 2821 of discharge pipe 282. Bubble generator 243 and wall-mounted ultrasonic transducer 244 in primary demulsification sedimentation chamber 24, secondary fine sedimentation chamber 25 and tertiary clarification and impurity removal chamber 26 work in conjunction to break the emulsified oil structure and promote oil droplet aggregation and floating; temperature sensor 245 detects the temperature of each chamber in real time and transmits the signal to PLC intelligent control cabinet 22. The PLC intelligent control cabinet 22 controls the working status of the heaters 242 in each chamber to achieve gradient temperature control. Sediment at the bottom of each chamber is discharged through the slag discharge port 241. A capacitive oil level sensor 295 monitors the oil layer thickness in each chamber in real time and transmits the signal to the PLC intelligent control cabinet 22. The PLC intelligent control cabinet 22 adjusts the output speed of the motor 293. The motor 293 drives the rotating column 292 to rotate via gear transmission. The rotating column 292 drives the oil suction plate 2921 to rotate, fully adsorbing the grease floating in each chamber. After adsorbing the grease, the oil suction plate 2921 rotates to the scraper 294, where the scraper 294 scrapes off the grease, which then collects in the oil collection plate. Within 291, the oil is finally discharged and recycled through the oil outlet pipe 2911. The clean water after oil separation flows into the clean water purification discharge chamber 27 and is discharged through the clean water discharge pipe 271 for recycling. Throughout the process, the PLC intelligent control cabinet 22 is electrically connected to the adjustable frequency vibration motor 124, bubble generator 243, wall-mounted ultrasonic transducer 244, heater 242, capacitive oil level sensor 295, temperature sensor 245, viscosity sensor 1221, ultrasonic echo detection component 151, and motor 293 to achieve fully automated control. The solenoid valve 1222 and manual valve 1223 on the connecting pipe 122 can realize the opening and closing control of the pipe, ensuring pipe isolation during equipment operation and maintenance and in case of failure.

[0045] The following points should be noted in this article: 1. The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention; other structures can refer to general designs.

[0046] 2. Where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other to obtain new embodiments.

[0047] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An oil-water separation device for edible oil production, characterized in that, include: The pre-filtration structure (1) and the sedimentation separation structure (2) are connected by a connecting pipe (122). The pre-filtration structure (1) includes a box (12). The box (12) is provided with a first filter plate (13) and a second filter plate (14). The first filter plate (13) and the second filter plate (14) adopt a gradient filtration design of pre-coarse filtration + post-fine filtration. The filter holes of the first filter plate (13) and the second filter plate (14) are staggered. The first filter plate (13) and the second filter plate (14) are both provided with a quick-release structure (134). The lower end of the first filter plate (13) and the second filter plate (14) are both provided with a foldable support frame (132). The box (12) is equipped with an adjustable frequency vibration motor (124). The sedimentation separation structure (2) includes an inner sedimentation tank (21). The inner sedimentation tank (21) is provided with a first partition structure (211), a second partition structure (212), and a third partition structure (213). The first partition structure (211), the second partition structure (212), and the third partition structure (213) divide the inner sedimentation tank (21) into four chambers, which are, from right to left, a primary demulsification sedimentation chamber (24), a secondary fine sedimentation chamber (25), a tertiary clarification and impurity removal chamber (26), and a purified water discharge chamber (27). The primary demulsification sedimentation chamber (24), the secondary fine sedimentation chamber (25), and the tertiary clarification and impurity removal chamber are respectively... A bubble generator (243) and a heater (242) are installed inside the cavity (26); a partition (29) is installed inside the inner sedimentation tank (21), a rotating column (292) is installed at the lower end of the partition (29), and an oil suction plate (2921) is installed on the rotating column (292). The number of oil suction plates (2921) above the first-stage demulsification sedimentation chamber (24), the second-stage fine sedimentation chamber (25) and the third-stage clarification and impurity removal chamber (26) are four, three and two respectively; an outer protective plate (214) is provided outside the inner sedimentation tank (21), and a PLC intelligent control cabinet (22) is installed on the outer protective plate (214) near the left side of the inner sedimentation tank (21).

2. The oil-water separation device for edible oil production according to claim 1, characterized in that, The pre-filtration structure (1) also includes a base frame (11), an elastic support assembly (111) is installed between the base frame (11) and the box (12), a conical hopper (121) is provided at the bottom of the box (12), the liquid inlet end of the connecting pipe (122) is connected to the conical hopper (121), and a viscosity sensor (1221), a solenoid valve (1222) and a manual valve (1223) are installed on the connecting pipe (122). The viscosity sensor (1221) is connected to the PLC intelligent control cabinet (22) for real-time monitoring of the viscosity of the oil-water mixture and automatic adjustment of the frequency of the adjustable frequency vibration motor (124), the flow rate of the bubble generator (243) and the temperature of the heater (242).

3. The oil-water separation device for edible oil production according to claim 2, characterized in that, Two filter cake discharge hoppers (123) are provided on the left side of the box (12). The two filter cake discharge hoppers (123) are used in conjunction with the first filter plate (13) and the second filter plate (14) respectively. The first filter plate (13) and the second filter plate (14) are each provided with a handle (131) and a baffle plate (133) is provided on the first filter plate (13) and the second filter plate (14) respectively. Four support columns (125) are fixed inside the box (12). Two sets of insertion holes are provided on the two support columns (125) near the left side of the box (12), which are used to install the left end of the first filter plate (13) and the second filter plate (14) respectively. Six sets of insertion holes are provided on the two support columns (125) near the right side of the box (12), which are used to install the right end of the first filter plate (13) and the second filter plate (14) respectively. The quick-release structure (134) includes a shell (1341) and a bottom plate (134). 2) A limiting plate (1343), a bottom spring (1344), a button (1345), a pin (1346), and a rebound spring (1347) are installed. A base plate (1342) is installed at the bottom of the housing (1341). A groove is provided on the inner wall of the housing (1341). The limiting plate (1343) slides up and down in the groove on the inner wall of the housing (1341). A round hole is provided at the upper end of the housing (1341). The button (1345) is located on the housing. Inside the round hole on the body (1341), the bottom of the button (1345) contacts the top of the limiting plate (1343), the bottom spring (1344) is installed between the limiting plate (1343) and the base plate (1342), the pin (1346) moves inside the housing (1341), and the pin (1346) is provided with a slot that can be used with the limiting plate (1343), and the rebound spring (1347) is sleeved on the pin (1346).

4. The oil-water separation device for edible oil production according to claim 3, characterized in that, A bracket (15) is fixedly installed on the housing (12). An ultrasonic echo detection assembly (151) for monitoring the degree of blockage of the first filter plate (13) and the second filter plate (14) is installed on the bracket (15). The ultrasonic echo detection assembly (151) includes a single ultrasonic probe. The ultrasonic probe is installed on the top of the housing (12) in the area above the first filter plate (13) and the second filter plate (14). It is installed vertically downwards, and the detection range covers the surface of the first filter plate (13) and the second filter plate (14).

5. An oil-water separation device for edible oil production according to claim 1, characterized in that, The upper end of the inner sedimentation tank (21) is equipped with a top plate (23), the pre-filtration structure (1) is installed on the top plate (23), the right side of the inner sedimentation tank (21) is provided with a feed pipe (28), the feed pipe (28) is connected to the connecting pipe (122), the inside of the feed pipe (28) is provided with a spiral plate (281) for reducing the impact force of oil and water transportation, the lower end of the feed pipe (28) is connected to a discharge pipe (282), the discharge pipe (282) is located at the bottom of the primary demulsification sedimentation chamber (24), and the bottom of the discharge pipe (282) is provided with a discharge hole (2821).

6. An oil-water separation device for edible oil production according to claim 5, characterized in that, The inner sedimentation tank (21) is equipped with a wall-mounted ultrasonic transducer (244). The frequency of the wall-mounted ultrasonic transducer (244) is 20-40kHz. It works in conjunction with the bubble generator (243). The wall-mounted ultrasonic transducer (244) is respectively located in the middle of the first-stage demulsification sedimentation chamber (24), the second-stage fine sedimentation chamber (25), and the third-stage clarification and impurity removal chamber (26). The bottom of the first-stage demulsification sedimentation chamber (24), the second-stage fine sedimentation chamber (25), and the clear water purification discharge chamber (27) are all provided with a slag discharge port (241). The bottom of the clear water purification discharge chamber (27) is connected to the bottom of the third-stage clarification and impurity removal chamber (26). A clear water discharge pipe (271) is provided on the left side of the clear water purification discharge chamber (27).

7. An oil-water separation device for edible oil production according to claim 1, characterized in that, Two gears are fixedly installed on the rotating column (292), and two motors (293) are installed on the partition (29). Gears are installed on the output shafts of the two motors (293). The gears on the output shafts of the motors (293) mesh with the gears on the rotating column (292). A scraper (294) for scraping grease off the oil-absorbing plate (2921) is installed on the partition (29). A pressure plate (2941) is provided at the upper end of the scraper (294). The scraper (294) is pressed and installed on the partition (29) by the pressure plate (2941).

8. An oil-water separation device for edible oil production according to claim 7, characterized in that, An oil collecting plate (291) is installed on the front side of the partition (29), and the front side of the oil collecting plate (291) is sealed to the inner wall of the inner sedimentation tank (21). An oil outlet pipe (2911) is installed on the front side of the inner sedimentation tank (21).

9. An oil-water separation device for edible oil production according to claim 8, characterized in that, Three capacitive oil level sensors (295) are installed on the partition (29), and three temperature sensors (245) are installed on the inner sedimentation tank (21). The three temperature sensors (245) are used to detect the oil temperature in the primary demulsification sedimentation chamber (24), the secondary fine sedimentation chamber (25), and the tertiary clarification and impurity removal chamber (26), respectively.

10. An oil-water separation device for edible oil production according to claim 3, characterized in that, The PLC intelligent control cabinet (22) is electrically connected to the adjustable frequency vibration motor (124), bubble generator (243), wall-mounted ultrasonic transducer (244), heater (242), and capacitive oil level sensor (295).

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