Rice bran oil processing extraction process and system

Abstract

The present application belongs to the technical field of oil refining and purifying, in particular to a rice bran oil processing and leaching process and system, which comprises a leaching device, the leaching device comprises a main device, a material grid, a spraying device, an oil collecting groove, a waste discharge groove and a driving device; further comprising: a partition frame, the partition frame is connected to the material grid through a spring sliding connection, and the partition frame is uniformly and vertically distributed; when the partition plate is in a horizontal state, it forms a closed state between each other, which blocks the rice bran and reduces the flow rate of the solvent passing through the partition plate, prolongs the flow rate of the solvent, avoids the excessive air permeability of the rice bran in the material grid, causes the solvent to flow too fast, and reduces the oil extraction effect due to insufficient contact between the two, for example: the partition plate is closed, so that there is a layer of solvent flowing slowly on the top and accumulating, which helps the contact between the rice bran and the solvent and improves the leaching effect; and fresh solvent is injected, and old solvent gradually flows down, which does not affect the injection of subsequent fresh solvent.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of oil refining and purification, and particularly relates to a rice bran oil processing leaching process and system. BACKGROUND

[0002] Rice bran oil is a kind of plant oil rich in nutrients, and the absorption rate after eating is more than 90%. The fatty acid composition, vitamin E, sterol and oryzanol of rice bran oil are beneficial to the absorption of human body, and the rice bran oil has beneficial effects such as removing cholesterol in blood, reducing blood lipids and promoting growth and development of human body. The leaching process of rice bran oil includes steps such as pretreatment, leaching, evaporation and stripping and solvent recovery. The commonly used leaching device is a flat rotating leaching device. After the rice bran enters the flat rotating leaching device, the rice bran is fully contacted with the leaching solvent, and under certain temperature and time conditions, the oil in the rice bran is extracted by the solvent to form mixed oil which is discharged.

[0003] However, if the rice bran is not evenly distributed in each grid when the flat rotating leaching device is fed, some grids are filled with too much rice bran, and some are filled with too little rice bran. In the grids filled with too much rice bran, the contact between the solvent and the rice bran is not sufficient in the leaching process due to the large packing density of the rice bran and the large penetration resistance of the solvent, so that part of the oil is not completely leached, and the amount of mixed oil remaining in the wet meal is relatively large. In the grids filled with too little rice bran, although the contact area between the rice bran and the solvent is large, the overall leached oil amount is small due to the small amount of material, and the amount of mixed oil in the wet meal is relatively small. Uneven distribution of materials will make the leaching effect uneven, reduce the overall oil leaching rate, and also may cause the wet meal quality in different grids to be inconsistent, which brings difficulties to subsequent wet meal processing.

[0004] In addition, uneven distribution will make the material layer compact and the air permeability poor, the penetration speed of the solvent in the material layer will slow down, the leaching process will be hindered, and more mixed oil will remain in the wet meal. The material layer formed by the rice bran with large particle size or small humidity has good air permeability, the solvent penetrates smoothly, the leaching effect is good, and the mixed oil content in the wet meal is relatively low. The difference in air permeability of the material layer will lead to different leaching speeds, affect the production efficiency, and also cause unstable wet meal quality, which has adverse effects on subsequent processing. SUMMARY

[0005] In order to make up for the deficiencies of the prior art and solve the above technical problems, the application provides a rice bran oil processing leaching process and system.

[0006] The technical scheme adopted by the application to solve the technical problems is that the application provides a rice bran oil processing leaching process and system, which comprises a leaching device, and the leaching device comprises a main device, a grid, a spraying device, an oil collecting tank, a waste discharge tank and a driving device.

[0007] The partition frame is connected to the material grid by spring sliding, and is uniformly and vertically distributed, and the partition plate is rotationally connected to the partition frame by torsion spring, a plurality of partition plates are arranged side by side in each partition frame, and infusion holes are uniformly arranged on the partition plates; infusion pipes are uniformly arranged in the inner wall of the material grid, and the part of the infusion pipe in the material grid is in communication with the inside of the partition plate and the partition frame, and the top of the main equipment is provided with a lifting device to drive the spray device to be connected with the top opening of the infusion pipe.

[0008] The sealing cover is located in the partition frame, and one end of the cylindrical partition plate is rotationally connected to the sealing cover, and the sealing cover is provided with a driving assembly to drive the partition plates to be connected and transmitted to each other; the waste plate is slidingly connected in the waste groove, and the waste plate is connected with the No. 1 electric push rod installed in the waste groove; the recovery holes are uniformly arranged in the inner wall of the waste groove, and the one-way valves are arranged in the recovery holes; the electric push door and the detection box are arranged at the bottom of the waste groove, and the detection box is in communication with the recovery hole, and the electric push door is located on one side of the detection box to close the waste groove.

[0009] Preferably, the inner wall of the top of the main equipment is provided with an arc-shaped extrusion ring, the top of the infusion pipe contacts the jagged surface of the bottom of the extrusion ring, the port of the extrusion ring is away from the lower side of the spray device, and the infusion pipes on both sides of the partition frame are synchronously lifted; the cross section of the periphery of the partition frame is trapezoidal, the surface of the partition frame contacting the inner wall of the material grid is larger than the surface away from the material grid, and the top and bottom surfaces of the partition frame are inclined surfaces; the oil filter holes are uniformly arranged on the surface of the inner wall of the material grid, and the oil filter holes contact the outer wall of the partition frame, and when the partition frame is at rest, the partition frame blocks the oil filter holes; the filter screen is arranged in the oil filter hole.

[0010] Preferably, the holes in the filter screen are vertically arranged, the unclogging rod is slidingly connected to the infusion pipe by a spring, and the brush arranged at the end of the unclogging rod extends into the hole in the filter screen.

[0011] Preferably, the filter frame is arranged in the material grid, the filter cloth is arranged on the filter frame, and the filter frame is close to the bottom of the material grid.

[0012] Preferably, the bottom of the infusion pipe is provided with a filter plate, the filter holes are uniformly arranged on the filter plate, the sealing plug is slidingly connected in the filter hole, the fixed rod is arranged at the bottom of the sealing plug, and the fixed rod is fixed to the inner wall of the material grid.

[0013] Preferably, the top of the infusion pipe is hingedly connected with the cap by a torsion spring, the cap is used to block the top opening of the infusion pipe, and the top of the cap is provided with a ball.

[0014] Preferably, the outer periphery of the main equipment is provided with a sealing plate, the sampling box is arranged on the sealing plate, the sampling box is located between the filter cloth and the bottom of the material grid, and the sampling box is in communication with the material grid.

[0015] Preferably, a detection plate is slidably connected in the detection box, the detection plate is connected with the second electric push rod installed on the detection box, a discharge pipe is arranged in the detection box, a one-way valve is arranged in the discharge pipe, and a sensor is arranged in the detection box.

[0016] Preferably, a weighing plate is arranged on the top of the electric push door, and a weighter is arranged between the weighing plate and the electric push door.

[0017] A rice bran oil processing leaching process, the leaching process steps comprising:

[0018] S1: pretreatment

[0019] The rice bran is removed from the rice hull, broken rice and sand impurities through a vibrating screen device; then, the moisture content of the rice bran is adjusted to a suitable range by using a fluidized bed dryer device; and then, the dried rice bran is rolled into a thin sheet by using a rolling mill;

[0020] S2: leaching

[0021] The pretreated rice bran is put into a leaching device, and a selected solvent is added; under preset temperature and time conditions, the solvent fully contacts the rice bran, the oil is dissolved into the solvent, and mixed oil is formed; after the leaching is completed, the mixed oil is separated from the solid residue by using a draining device;

[0022] S3: evaporation and stripping

[0023] The mixed oil obtained by draining is sent into an evaporator, the solvent is evaporated by heating, and crude oil is obtained; then, the crude oil is stripped by using a stripping tower, the residual solvent is removed by using water vapor, and the residual amount of the solvent in the crude oil meets the national standard;

[0024] S4: solvent recovery

[0025] The solvent gas volatilized in the leaching process is cooled by using a condenser, condensed into a liquid, and recycled; the recycled solvent is regenerated by using a distillation method, so that the purity of the solvent and the leaching effect are ensured.

[0026] The beneficial effects of the present application are as follows:

[0027] 1. The rice bran oil processing leaching process and system, when the partition plates are in a horizontal state, the partition plates form a closed state, the flow rate of the solvent passing through the partition plates is reduced, the flow rate of the solvent is prolonged, the permeability of the rice bran in the material grid is reduced, the flow rate of the solvent is reduced, the rice bran and the solvent are not fully contacted, and the oil extraction effect is reduced, for example, the top of the partition plate can have a layer of solvent flowing slowly and accumulating due to the closure, which helps the contact between the rice bran and the solvent and improves the leaching effect; and fresh solvent is injected, and the old solvent gradually flows down, which does not affect the injection of the subsequent fresh solvent.

[0028] 2. The rice bran oil processing leaching process and system, after the wet bran enters the waste discharge groove, the first electric push rod is started to drive the waste material plate to move, the waste material plate moves to extrude the wet bran in cooperation with the inner wall of the waste discharge groove, the wet bran is extruded into the closed space in the waste discharge groove, the waste material plate continuously extrudes the wet bran, the mixed oil remaining in the wet bran is extruded out, because the closed space in the waste discharge groove is reduced due to the extrusion of the waste material plate, the mixed oil is extruded into the detection box inside through the recovery hole at the same time, the detection box detects the quality of the mixed oil remaining in the wet bran, the workers judge the leaching effect according to the detection results, which is convenient for workers to change the leaching work, thereby improving the leaching effect. BRIEF DESCRIPTION OF DRAWINGS

[0029] The application will be further described below in combination with the drawings.

[0030] Figure 1 is the internal structure diagram of the application;

[0031] Figure 2 is the perspective view of the upper half of the main device;

[0032] Figure 3 is the state diagram of the rice bran wet bran discharged into the waste discharge groove;

[0033] Figure 4 is the state diagram of the material grid discharging mixed oil;

[0034] Figure 5 is the schematic diagram of the driving assembly driving the partition plate to rotate;

[0035] Figure 6 is the sectional view of the material grid side;

[0036] Figure 7 is Figure 6 the sectional view at A-A in the middle;

[0037] Figure 8 is the top view of the lower half of the main device;

[0038] Figure 9 is the half sectional view of the waste discharge groove.

[0039] In the drawings: main device 1, material grid 11, spraying device 12, oil collection groove 13, waste discharge groove 14, partition frame 15, partition plate 16, liquid delivery hole 17, liquid delivery pipe 18, lifting device 19, sealing cover 2, driving assembly 21, waste material plate 22, first electric push rod 23, recovery hole 24, electric push door 25, detection box 26, extrusion ring 27, oil filter hole 28, filter screen 29, dredging rod 3, filter frame 31, filter cloth 32, filter pressing plate 33, filter pressing hole 34, sealing plug 35, fixed rod 36, cap 37, ball 38, sealing plate 4, sampling box 41, detection plate 42, second electric push rod 43, discharge pipe 44, weighing plate 45. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0041] Embodiment one:

[0042] In order to effectively solve the above problems, as shown in the drawings accompanying the specification Figures 1-9 , it comprises a pretreatment unit, a leaching unit, a filtration unit, a wet meal treatment unit, and a solvent recovery unit.

[0043] The rice bran oil leaching system is divided into a pretreatment unit, a leaching unit, a mixed oil treatment unit, a wet meal treatment unit, and a solvent recovery unit. For example:

[0044] Pretreatment unit:

[0045] Raw material cleaning module: impurities in rice bran are removed by devices such as vibrating screen and magnetic separator to prevent impurities from entering subsequent devices and causing equipment wear or blockage.

[0046] Drying and conditioning module: the moisture and temperature of rice bran are adjusted by using devices such as dryers to make it reach a suitable leaching state; the moisture of rice bran is controlled at 8%-12%, and the temperature is controlled at 40-60℃, which is beneficial to improve the leaching effect and the quality of subsequent products.

[0047] Leaching unit:

[0048] Leaching module: after rice bran enters the leaching device, it is fully contacted with the solvent, and under certain temperature and time conditions, the oil in the rice bran is extracted by the solvent to form mixed oil.

[0049] Solvent circulation module: the solvent pump delivers the solvent from the solvent storage tank to the leaching device for leaching reaction with rice bran; the mixed oil after leaching and the remaining solvent flow back to the solvent storage tank through the pipeline to form solvent circulation; in the circulation process, the filter is used to remove impurities in the solvent to ensure the purity of the solvent.

[0050] Filtration unit:

[0051] Filtering module: filtering equipment such as plate and frame filter press is used to filter the mixed oil to remove solid impurities such as rice bran powder, thereby improving the quality of the mixed oil.

[0052] Evaporation module: the evaporator is used to heat and evaporate the filtered mixed oil to volatilize the solvent and separate the oil, further remove the residual solvent in the mixed oil, and obtain crude oil.

[0053] wet meal processing unit:

[0054] desolventizing module: the wet meal after leaching contains a large amount of solvent, which needs to be desolventized; a steam desolventizing machine is used, steam is introduced to volatilize the solvent in the wet meal, so as to separate the solvent from the meal;

[0055] drying and cooling module: the moisture of the meal is reduced by a dryer and a cooler, and the temperature is reduced to room temperature to prevent the meal from mildewing and deteriorating during storage;

[0056] solvent recovery unit:

[0057] solvent condensing module: the solvent vapor volatilized from the mixed oil evaporation and wet meal desolventizing processes is cooled by a condenser to condense it into liquid solvent;

[0058] solvent storage module: the recovered solvent is separated from the water therein by a separator and stored in a solvent storage tank for recycling by the leaching unit;

[0059] The leaching unit comprises a leaching device 1, a material grid 11, a spraying device 12, an oil collection groove 13, a waste discharge groove 14 and a driving device; and further comprises:

[0060] a partition frame 15 which is slidably connected in the material grid 11 by a spring and is uniformly and vertically distributed, and a partition plate 16 which is rotatably connected in the partition frame 15 by a torsion spring, a plurality of partition plates 16 being arranged side by side in each partition frame 15, and a liquid delivery hole 17 being uniformly arranged on each partition plate 16; a liquid delivery pipe 18 being uniformly arranged in the inner wall of the material grid 11, and the portion of the liquid delivery pipe 18 located in the material grid 11 being in communication with the interiors of the partition plates 16 and the partition frames 15, and the top of the main device 1 being provided with a lifting device 19 to drive the spraying device 12 to be lowered and connected with the top opening of the liquid delivery pipe 18;

[0061] a sealing cover 2 which is located in the partition frame 15 and has one end of a cylinder of the partition plate 16 rotatably connected in the sealing cover 2, and a driving assembly 21 being arranged in the sealing cover 2 to drive the partition plates 16 to be connected with each other; a waste material plate 22 being slidably connected in the waste discharge groove 14 and connected with a first electric push rod 23 arranged in the waste discharge groove 14; a recovery hole 24 being uniformly arranged in the inner wall of the waste discharge groove 14, and a one-way valve being arranged in the recovery hole 24; an electric push door 25 and a detection box 26 being arranged at the bottom of the waste discharge groove 14, respectively, and the detection box 26 being in communication with the recovery hole 24, and the electric push door 25 being located on one side of the detection box 26 to close the waste discharge groove 14;

[0062] The main device 1, the material grid 11, the spraying device 12, the oil collecting groove 13, the waste discharge groove 14 and the driving device are conventional components of the leaching device, and the lifting device 19 is an electric lifter used to drive the spraying nozzle in the spraying device 12 to lift; the driving assembly 21 is an integrated device of a conventional motor and a transmission belt, for example: the motor drives the transmission belt to rotate, the transmission belt is connected to the end of each partition plate 16 extending into the sealed cover 2, and drives the partition plate 16 to rotate, the space between the driving assembly 21 and the partition plate 16 is sealed by the sealed cover 2 to avoid the contact between the solvent and the components used for transmission to cause pollution; the middle part of the partition plate 16 is located in the frame of the partition frame 15, the two ends pass through the inner walls on both sides of the partition frame 15, the side wall of the sealed cover 2 and are located between the inner wall of the sealed cover 2 on one side and the partition frame 15, one end of the partition plate 16 is in communication with the hollow interior of the partition frame 15, so that the solvent can be uniformly delivered to the interior of the partition plate 16 through the partition frame 15, and sprayed into the raw materials through the infusion hole 17.

[0063] Specific working process: the pretreated rice bran is sent into the material grid 11 of the horizontal rotary leaching device through the feeding device of the conventional configuration of the leaching device, at this time the driving assembly 21 drives the partition plate 16 to rotate to the vertical state, the partition plate 16 will not block the rice bran from falling and accumulating in the material grid 11, until the fixed amount of rice bran is put into the material grid 11, then the driving assembly 21 drives the partition plate 16 to rotate to the horizontal state, at this time the partition plate 16 in the horizontal state and the partition frame 15 form a closed partition, so that the interior of the material grid 11 forms multiple partition spaces through the intervention of the partition frame 15; the amount of rice bran in the partition space is reduced, reducing the accumulation of rice bran leads to insufficient air permeability at the bottom, causing the solvent flowability to decrease, thereby improving the air permeability of the rice bran in the material grid 11, improving the contact effect of the solvent flow and the rice bran, and further improving the leaching effect;

[0064] The rice bran rotates in the material grid 11 driven by the driving device, when the material moves to the lower part of the spraying device 12 with the material grid 11, at this time the top opening of the infusion tube 18 is aligned with the spraying port at the bottom of the spraying device 12, the lifting device 19 drives the spraying device 12 to descend and communicate with the top opening of the infusion tube 18, the spraying device 12 delivers the solvent to the infusion tube 18 at the same time, and sprays the solvent to the rice bran at the top of the material grid 11; the solvent in the infusion tube 18 is sprayed out from the infusion hole 17 through the interior of the partition frame 15 and the interior of the partition plate 16, cooperating with the partitioning effect of the rice bran;

[0065] On the one hand, the improvement of air permeability enables the rice bran in the material grid 11 to contact the rice bran simultaneously and uniformly, avoiding the process of the solvent flowing down from the top of the material grid 11 for too long, leading to the difference in the contact time of the solvent with the rice bran at different parts of the material grid 11, and causing the situation that part of the oil is not effectively extracted;

[0066] In another aspect, when the partition plate 16 is in a horizontal state, it forms a closed state with each other, blocks the rice bran, reduces the flow rate of the solvent through the partition plate 16, prolongs the flow rate of the solvent, avoids the internal permeability of the rice bran in the material grid 11 being too large, causes the flow rate of the solvent to be too fast, and causes the oil extraction effect to be reduced due to insufficient contact between the two. For example: the partition plate 16 is closed to enable a layer of solvent to flow slowly and accumulate at the top, which helps the contact between the rice bran and the solvent and improves the leaching effect; and, fresh solvent is injected, and old solvent gradually flows down, which does not affect the injection of fresh solvent subsequently; and, workers can also adjust the rotation of the partition plate 16 to an angle close to horizontal to adjust the degree of closure of the partition plate 16, thereby achieving the purpose of adjusting the flowability of the solvent;

[0067] With the slow rotation of the horizontal rotary extractor, the material in the material grid 11 contacts the solvent, and the oil is gradually dissolved and diffused into the solvent to form mixed oil; after a period of leaching, most of the oil in the material has been extracted by the solvent, the mixed oil in the material grid 11 enters the draining part of the extractor, and is gradually drained; the mixed oil in the material grid 11 enters the oil collection tank 13 for collection, and the content of the mixed oil in the material forms wet meal;

[0068] Subsequently, the material grid 11 rotates into the above of the waste discharge tank 14, the driving assembly 21 drives the partition plate 16 to rotate to a vertical state, and the partition plate 16 no longer has a blocking effect on the wet meal, and the wet meal falls through the partition frame 15 and the partition plate 16 into the waste discharge tank 14, and since the wet meal still contains a small amount of mixed oil, the mixed oil can act as a lubricant during the falling process of the wet meal, reducing the friction between the wet meal and the parts and reducing the residual amount of the wet meal in the material grid 11;

[0069] After the wet meal enters the waste discharge tank 14, the first electric push rod 23 is started to drive the waste material plate 22 to move, and the waste material plate 22 moves to press the wet meal against the inner wall of the waste discharge tank 14, so that the wet meal is squeezed into the closed space in the waste discharge tank 14; the waste material plate 22 continuously squeezes the wet meal, and the mixed oil remaining in the wet meal is squeezed out; since the closed space in the waste discharge tank 14 is reduced due to the squeezing of the waste material plate 22, the mixed oil is squeezed into the detection box 26 inside through the recovery hole 24 while being squeezed out; the detection box 26 detects the quality of the mixed oil remaining in the wet meal, for example:

[0070] Insufficient contact between the solvent and the material: if the oil content in the mixed oil is low, and the squeezed oil content in the wet meal is high, it may be that the solvent does not contact the material sufficiently during the leaching process, resulting in that part of the oil is not effectively extracted;

[0071] Insufficient leaching time: if the leaching time is too short, the oil cannot be fully transferred from the material to the solvent, which will cause the oil content in the mixed oil to be lower than expected and the residual oil rate in the wet meal to be high;

[0072] Workers assist in judging the leaching effect according to the test results, facilitate workers to change the leaching work, thereby improving the leaching effect; and, most of the mixed oil remaining in the wet meal can be recovered, reducing the subsequent processing intensity of the wet meal;

[0073] After the wet meal is extruded, the first electric push rod 23 drives the waste plate 22 to reset, the electric push door 25 is opened, and the extruded wet meal is discharged from the bottom of the waste discharge groove 14 for recycling.

[0074] Example two:

[0075] On the basis of example one, the top inner wall of the main device 1 is provided with an arc-shaped extrusion ring 27, and the top of the liquid conveying pipe 18 contacts the bottom jagged surface of the extrusion ring 27, the port of the extrusion ring 27 is away from below the spraying device 12, and the liquid conveying pipes 18 on both sides of the separation frame 15 are synchronously lifted; the four peripheral edges of the separation frame 15 are trapezoidal in cross section, the surface of the separation frame 15 contacting the inner wall of the material grid 11 is larger than the surface away from the material grid 11, and the top and bottom surfaces of the separation frame 15 are inclined; the inner wall surface of the material grid 11 is uniformly provided with oil filter holes 28, and the oil filter holes 28 contact the outer wall of the separation frame 15, when the separation frame 15 is stationary, the separation frame 15 blocks the oil filter holes 28; the filter screen 29 is arranged in the oil filter holes 28;

[0076] The holes in the filter screen 29 are vertically arranged, the liquid conveying pipe 18 is slidably connected with a dredging rod 3 through a spring, and the brush arranged at the end of the dredging rod 3 extends into the holes in the filter screen 29;

[0077] The material grid 11 is provided with a filter frame 31, the filter cloth 32 is mounted on the filter frame 31, and the filter frame 31 is close to the bottom of the material grid 11;

[0078] The separation frame 15 is connected with the liquid conveying pipe 18, the connecting part of the two penetrates the side wall of the material grid 11, and the penetrating part can move up and down on the lifting groove formed on the side wall of the material grid 11, and the top and bottom of the separation frame 15 are additionally provided with sealing rings, which seal the gap between the separation frame 15 and the side wall of the material grid 11, so as to prevent the rice bran from leaking into the inside of the material grid 11 from the connecting part.

[0079] Specific workflow: when the driving device drives the material grid 11 to rotate, the material grid 11 drives the infusion pipe 18 to rotate, and after the infusion pipe 18 passes the spraying device 12, the top of the infusion pipe 18 contacts the serrated surface at the bottom of the extrusion ring 27, so that the infusion pipe 18 is extruded downward and descends, the infusion pipe 18 drives the separation frame 15 and the separation plate 16 to descend, and a small amount of rice bran in the separation space is moved downward; after the infusion pipe 18 moves out of the serrated tooth tip of the extrusion ring 27, the infusion pipe 18 is no longer extruded, the separation frame 15 is affected by the spring, drives the separation plate 16 and the infusion pipe 18 to rise rapidly, the separation plate 16 drives the rice bran in the separation space to move upward, and the separation frame 15 scrapes the rice bran adhering to the inner wall of the material grid 11, thereby increasing the movement effect of the rice bran, promoting the contact between the rice bran and the solvent, and cleaning the inner wall of the material grid 11 to avoid the formation of rice bran agglomerates on the inner wall of the material grid 11, which affects the leaching work;

[0080] When the infusion pipe 18 rises and collides with the serrated recessed part of the extrusion ring 27, the separation frame 15 and the separation plate 16 drive the rice bran to vibrate due to the collision, so that the rice bran in the separation space achieves a throwing effect, and the rice bran in the separation space is turned over by vibration, so that the position of the rice bran changes, the rice bran that contacts the solvent moves away from the solvent, and the rice bran that does not contact the solvent moves close to the solvent, thereby promoting the contact between the rice bran and the solvent and improving the leaching effect of the rice bran oil; and cooperating with the detection result of the mixed oil extracted from the wet bran by the detection box 26, the worker can determine the leaching degree of the rice bran oil, thereby improving the convenience of use;

[0081] After the oil in the material grid 11 is extracted, it flows with the solvent, but if it flows from top to bottom, the oil needs to flow a long and complex path, which easily leads to poor oil discharge or draining effect; therefore, by setting the oil filter hole 28 and the filter screen 29, the extracted oil or solvent in each separation space flows into the hollow interior of the material grid 11 through the filter screen 29, and then flows into the oil collecting tank 13 for collection or circulation, thereby improving the oil draining effect and accelerating the circulation efficiency of the solvent;

[0082] Moreover, since the cross section of the separation frame 15 around is trapezoidal, a layer of solvent is formed on the top of the separation plate 16, and solvent or oil exceeding this thickness will overflow and flow into the interior of the material grid 11 through the filter screen 29, thereby ensuring the flowability of the solvent and the circulation efficiency of the solvent while maintaining the extraction effect of the solvent;

[0083] When the infusion pipe 18 rises and descends, the infusion pipe 18 drives the dredging rod 3 to rise and descend, the brush at the end of the dredging rod 3 slides into the oil filter hole 28, and then descends to wash and dredge the filter screen 29 along the vertical mesh of the oil filter hole 28, thereby maintaining the filtering capacity of the filter screen 29 and reducing the influence of blockage;

[0084] The solution mixed by the solvent and the oil flowing out of the material grid 11 is filtered by the filter cloth 32 in the filter frame 31, the rice bran impurities in the filtered solution are filtered, the cleanliness is improved, the pressure of filtering impurities in the solution circulation process is reduced, and the solution circulation efficiency is improved; and when installing the filter frame 31, a maintenance door can be opened on the side wall of the material grid 11 and the main equipment 1, the worker can directly take away the filter frame 31 and the filter cloth 32 by opening the maintenance door, the replacement is convenient, and the practicability is improved.

[0085] Embodiment three:

[0086] On the basis of embodiment two, the bottom of the infusion pipe 18 is provided with a filter plate 33, and the filter plate 33 is uniformly provided with filter holes 34, and the filter holes 34 are slidably connected with sealing plugs 35, and the bottom of the sealing plug 35 is provided with a fixed rod 36, and the fixed rod 36 is fixed on the inner wall of the material grid 11.

[0087] The top of the infusion pipe 18 is hingedly connected with a cap 37 through a torsion spring, the cap 37 is used for plugging the top opening of the infusion pipe 18, and the top of the cap 37 is provided with a ball 38.

[0088] The outer periphery of the main equipment 1 is provided with a sealing plate 4, and the sealing plate 4 is provided with a sampling box 41, and the sampling box 41 is located between the filter cloth 32 and the bottom of the material grid 11, and the sampling box 41 is communicated with the material grid 11.

[0089] Specific working process: the infusion pipe 18 drives the filter plate 33 to descend, the sealing plug 35 is inserted into the filter hole 34 when the filter plate descends, the filter hole 34 is sealed, and the filter plate 33 extrudes the solution between the filter plate 33 and the filter frame 31 downward, accelerates the flow and filtration of the solution, and improves the filtration efficiency of the solution; when the infusion pipe 18 drives the filter plate 33 to ascend, the sealing plug 35 is fixed due to the influence of the fixed rod 36, the filter plate 33 ascends to make the sealing plug 35 away from the filter hole 34, and the solution flowing out of the oil filtering hole 28 passes through the filter plate 33 through the filter hole 34 and falls on the filter cloth 32;

[0090] When the infusion pipe 18 is close to the spraying device 12, the cap 37 is turned over to open the top opening of the infusion pipe 18 due to the influence of the torsion spring; when the infusion pipe 18 is away from the spraying device 12, the cap 37 is reversely turned over to reset due to the extrusion of one end of the extrusion ring 27, the cap 37 re-plugs the top opening of the infusion pipe 18, and the inside of the infusion pipe 18 is prevented from being polluted; and the cap 37 is in rolling contact with the serrated bottom of the extrusion ring 27 through the ball 38, the friction is reduced, and the generation of debris affecting the cleanliness of the rice bran is prevented; and when the infusion pipe 18 descends, the separation frame 15 is kept in a horizontal state to ascend and descend, so that the separation frame 15 is prevented from being tilted during the ascending and descending process and causing movement obstruction.

[0091] By setting the sampling boxes 41 and distributing them annularly in the oil collection groove 13, workers can mark each sealing plate 4, for example, the first sealing plate 4 and the sampling box 41 are in the initial stage of leaching, the second sealing plate 4 and the sampling box 41 are in the middle stage of leaching, and the third sealing plate 4 and the sampling box 41 are in the final stage of leaching. Workers sample and detect solution samples in multiple stages of leaching, determine the oil leaching effect of each stage, and combine the detection of residual mixed oil in wet meal in the detection box 26 and the leaching adjustment in the material grid 11 to facilitate workers to control the leaching effect of rice bran in real time and improve the practicability of the leaching system, for example:

[0092] Accurate judgment of leaching effect:

[0093] In the initial stage of leaching, the first sealing plate 4 and the sampling box 41 collect solution samples, at which time the detection sample can understand the oil leaching speed and initial leaching amount when rice bran and solvent first contact; in the middle stage of leaching, the second sealing plate 4 and the sampling box 41 sample and detect, which can know the progress of oil leaching in the leaching process and judge whether the leaching is proceeding as expected; to the final stage of leaching, the sample detection of the third sealing plate 4 and the sampling box 41 can determine whether the oil in the rice bran has been extracted as much as possible;

[0094] Effect: Through the detection of solution samples at different stages, the dynamic changes of oil leaching can be accurately mastered; for example, if it is found that the oil leaching speed is too slow in the initial stage of leaching, it may be that the solvent spraying is uneven or the material pretreatment effect is poor, the spraying device 12 or the material pretreatment link can be adjusted in time; if the middle stage leaching effect does not meet the expectation, it can be analyzed that it is affected by factors such as temperature, solvent and material ratio, and then targeted adjustment is made; the detection at the end of leaching can judge whether the leaching is complete, if there is too much residual oil, measures such as prolonging the leaching time or increasing the solvent amount can be taken to improve the oil extraction rate and ensure the product quality;

[0095] Timely adjustment of leaching parameters:

[0096] Combined with the detection of residual mixed oil in wet meal in the detection box 26, the remaining oil and solvent in the wet meal after leaching can be understood; at the same time, the leaching state in the material grid 11 is observed, such as the turning of the material and the penetration of the solvent; according to these detection and observation results, the parameters in the leaching process are adjusted, such as solvent flow, leaching temperature, stirring speed, etc.

[0097] Effect: This combination of detection and adjustment can keep the leaching process in the best state at all times; for example, if the residual mixed oil content in the wet meal is high, it may be due to insufficient solvent flow, which cannot fully dissolve and remove the oil, at this time the solvent flow can be increased to ensure that the solvent fully contacts the rice bran, improving the oil leaching effect; if the material in the material grid 11 is not fully stirred, resulting in uneven solvent penetration, the stirring speed or paddle angle can be adjusted to improve the mixing degree of the material and the solvent, ensuring uniform leaching, thereby improving the overall leaching efficiency and reducing energy consumption and production costs;

[0098] Optimize the overall production process:

[0099] By sampling and parameter adjustment at each stage, production data is accumulated, and the characteristics and rules of different batches of rice bran leaching are analyzed; based on these data, the entire leaching process is optimized, including the operation parameters of the equipment, the processing method of the material, etc.

[0100] Effect: It helps to optimize the overall production process; for example, through analysis of multiple batches of data, it is found that a certain type of rice bran raw material has better leaching effect under certain pretreatment conditions, which can be fixed to improve the stability of production and the consistency of product quality; at the same time, according to the data feedback during the leaching process, the equipment can also be maintained and improved in a targeted manner, such as adjusting the position of the sealing plate 4 or optimizing the design of the sampling box 41, so that the equipment is more suitable for production needs and improves production efficiency;

[0101] Example Four:

[0102] On the basis of example three, the detection box 26 is slidably connected with a detection plate 42, the detection plate 42 is connected with a second electric push rod 43 installed on the detection box 26, the detection box 26 is provided with a discharge pipe 44, and the discharge pipe 44 is provided with a one-way valve, and the detection box 26 is provided with a sensor;

[0103] The top of the electric push door 25 is provided with a weighing plate 45, and the weighing plate 45 and the electric push door 25 are provided with a weighing device.

[0104] Specific working process: when the wet meal is received by the extrusion, the second electric push rod 43 is started to drive the detection plate 42 to move away from the discharge pipe 44, a negative pressure is formed in the internal space of the detection box 26 close to the recovery hole 24 and the discharge pipe 44, and since the discharge pipe 44 is provided with a conventional one-way valve, the discharge pipe 44 cannot supply air to the detection box 26 from the outside, so that the detection box 26 sucks the extruded mixed oil into the discharge slot 14 through the recovery hole 24, and cooperates with the extrusion action of the waste material plate 22 to improve the flow rate of the mixed oil into the detection box 26, improve the detection efficiency; when the waste material plate 22 resets away from the recovery hole 24, the detection box 26 completes the detection work of the mixed oil through the sensor commonly used for detecting the composition of the mixed oil, and the detection plate 42 extrudes the mixed oil into the oil collection groove 13 for recovery;

[0105] And, the worker can be provided with a mesh for filtering the wet meal near the end of the recovery hole 24 close to the waste slot 14, and the mixed oil squeezed from the wet meal is filtered; and a gas blowing pipe can also be provided on the side of the mesh away from the wet meal, and a one-way valve is provided in the gas blowing pipe, and when the waste plate 22 squeezes the wet meal, the gas blowing pipe is closed, and when the waste plate 22 is squeezed away from the wet meal, the closed space in the waste slot 14 forms a negative pressure state for a short time, and the gas blowing pipe on one side of the mesh blows gas into the waste slot 14, blowing away the wet meal filtered on the mesh, and maintaining the filtering capacity;

[0106] After the wet meal is squeezed, the first electric push rod 23 is reset, and the wet meal is naturally placed on the weighing plate 45 on the top of the electric push door 25, and the weighed wet meal after squeezing is weighed by a conventional scale, and the amount of mixed oil squeezed into the detection box 26 is detected, so that the weight of the wet meal in each material grid 11 and the residual amount of mixed oil in the wet meal can be obtained. With these parameters as a comparison, the composition change in the mixed oil is analyzed when the same wet meal is used, and the worker can adjust the leaching process in a timely manner, thereby improving the practicability.

[0107] Example Five:

[0108] A rice bran oil processing leaching process, the leaching process steps comprising:

[0109] S1: Pretreatment

[0110] The rice bran is removed from the rice hull, broken rice, and sand impurities by a vibrating screen device; then, the moisture content of the rice bran is adjusted to a suitable range by using a fluidized bed dryer device; then, the dried rice bran is rolled into a thin sheet by using a rolling machine;

[0111] S2: Leaching

[0112] The pretreated rice bran is placed in a leaching device, and a selected solvent is added, and under the conditions of pre-set temperature and time, the solvent is in full contact with the rice bran, and the oil is dissolved into the solvent to form a mixed oil; after the leaching is completed, the mixed oil is separated from the solid residue by a draining device;

[0113] S3: Evaporation and stripping

[0114] The mixed oil obtained by draining is sent into an evaporator, and the solvent is evaporated by heating to obtain crude oil; then, the crude oil is stripped by a stripping tower, and the residual solvent is removed by using water vapor to ensure that the residual amount of solvent in the crude oil meets the national standard;

[0115] S4: Solvent recovery

[0116] The volatile solvent gas in the leaching process is cooled by a condenser to condense into a liquid for recycling; the recycled solvent is regenerated by distillation to ensure the purity of the solvent and the leaching effect.

[0117] The foregoing is considered as illustrative only of the principles of the application. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and practice described. Accordingly, all such variations and modifications are intended to be included within the scope of the application as defined in the following claims and the equivalents thereof.

Claims

1. A rice bran oil processing and leaching system, comprising an extractor, wherein the extractor comprises a main device (1), a material grid (11), a spray device (12), an oil collecting tank (13), a waste discharge tank (14) and a driving device; characterized in that: Also includes: A partition frame (15), wherein the partition frame (15) is connected to the material grid (11) by a spring sliding connection, and the partition frames (15) are evenly distributed vertically, and a partition plate (16) is connected to the partition frame (15) by a torsion spring rotation, and a plurality of partition plates (16) are arranged side by side in each partition frame (15), and infusion holes (17) are evenly opened on the partition plates (16); an infusion tube (18) is evenly arranged in the inner wall of the material grid (11), and the part of the infusion tube (18) located in the material grid (11) is communicated with the interior of the partition plate (16) and the partition frame (15); a lifting device (19) is provided on the top of the main device (1) to drive the spray device (12) to descend and connect with the top opening of the infusion tube (18); A sealing cover (2) is provided, wherein the sealing cover (2) is located in a partition frame (15), and one end of a cylindrical partition plate (16) rotates in the sealing cover (2), and a driving assembly (21) is provided in the sealing cover (2) to connect and drive the partition plates (16) to each other; a waste plate (22) is slidably connected in the waste discharge trough (14), and the waste plate (22) is connected to a No. 1 electric push rod (23) installed in the waste discharge trough (14); recovery holes (24) are evenly opened on the inner wall of the waste discharge trough (14), and a one-way valve is provided in the recovery hole (24); an electric push door (25) and a detection box (26) are respectively provided at the bottom of the waste discharge trough (14), and the detection box (26) is communicated with the recovery hole (24), and the electric push door (25) is located on one side of the detection box (26) to close the waste discharge trough (14).

2. a kind of rice bran oil processing leaching system according to claim 1, is characterized in that: The top inner wall of the main device (1) is provided with an arc-shaped extrusion ring (27), and the top of the infusion pipe (18) contacts the serrated surface of the bottom of the extrusion ring (27), the port of the extrusion ring (27) is away from the bottom of the spray device (12), and the infusion pipes (18) on both sides of the partition frame (15) rise and fall synchronously; the edge cross-section of the partition frame (15) is trapezoidal, the surface of the partition frame (15) contacting the inner wall of the material grid (11) is larger than the surface away from the material grid (11), and the top and bottom surfaces of the partition frame (15) are inclined surfaces; the inner wall surface of the material grid (11) is evenly provided with oil filter holes (28), and the oil filter holes (28) contact the outer wall of the partition frame (15). When the partition frame (15) is stationary, the partition frame (15) blocks the oil filter holes (28); a filter screen (29) is provided in the oil filter hole (28).

3. a kind of rice bran oil processing leaching system according to claim 2, is characterized in that: The holes in the filter (29) are arranged vertically, and a dredging rod (3) is slidably connected to the infusion tube (18) via a spring, and a brush arranged at the end of the dredging rod (3) extends into the holes in the filter (29).

4. a kind of rice bran oil processing and leaching system according to claim 2, is characterized in that: A filter frame (31) is provided in the material grid (11), a filter cloth (32) is installed on the filter frame (31), and the filter frame (31) is close to the bottom of the material grid (11).

5. a kind of rice bran oil processing and leaching system according to claim 4, is characterized in that: A filter press plate (33) is provided at the bottom of the liquid infusion pipe (18), and filter press holes (34) are evenly opened on the filter press plate (33). A sealing plug (35) is slidably connected in the filter press hole (34). A fixing rod (36) is provided at the bottom of the sealing plug (35), and the fixing rod (36) is fixed on the inner wall of the material grid (11).

6. A rice bran oil processing and leaching system according to claim 5, characterized in that: The top of the infusion tube (18) is hinged with a cap (37) via a torsion spring. The cap (37) is used to seal the top opening of the infusion tube (18), and a ball (38) is provided on the top of the cap (37).

7. A rice bran oil processing and leaching system according to claim 5, characterized in that: A sealing plate (4) is provided on the outer periphery of the main device (1), and a sampling box (41) is provided on the sealing plate (4). The sampling box (41) is located between the filter cloth (32) and the bottom of the material grid (11), and the sampling box (41) and the material grid (11) are communicated with each other.

8. A rice bran oil processing and leaching system according to claim 1, characterized in that: A detection plate (42) is slidably connected in the detection box (26), and the detection plate (42) is connected to a second electric push rod (43) installed on the detection box (26). A discharge pipe (44) is provided in the detection box (26), and a one-way valve is provided in the discharge pipe (44). A sensor is provided in the detection box (26).

9. A rice bran oil processing and leaching system according to claim 1, characterized in that: A weighing plate (45) is provided on the top of the electric push door (25), and a weighing device is provided between the weighing plate (45) and the electric push door (25).

10. A rice bran oil processing and leaching process, characterized in that, The rice bran oil processing and leaching process adopts the rice bran oil processing and leaching system described in any one of claims 1-9, and the leaching process steps include: S1: Preprocessing The rice bran is then filtered through a vibrating screen to remove rice husks, broken rice, and sand and gravel impurities. A fluidized bed dryer is then used to adjust the moisture content of the rice bran to an appropriate range. The dried rice bran is then rolled into flakes using a flaking mill. S2: Leaching The pretreated rice bran is placed in an extractor, and a selected solvent is added. Under preset temperature and time conditions, the solvent and the rice bran are fully in contact, and the oil is dissolved in the solvent to form a mixed oil. After the extraction is completed, the mixed oil is separated from the solid residue through a draining device; S3: Evaporation and stripping The mixed oil obtained by draining is sent to the evaporator, where the solvent is evaporated by heating to obtain crude oil. The crude oil is then stripped by a stripping tower, where the residual solvent is removed using water vapor to ensure that the residual solvent content in the crude oil meets national standards. S4: Solvent Recovery The volatilized solvent gas during the leaching process is cooled by a condenser, condensed into liquid, and recycled; the recovered solvent is regenerated by distillation to ensure the purity of the solvent and the leaching effect.

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