Processing technology suitable for high-dimensional E corn oil production and processing device thereof

Abstract

The invention discloses a processing technology and a processing device suitable for high-dimensional E corn oil production, and relates to the technical field of corn oil squeezing, and the processing technology comprises the following steps: step 1, raw material pretreatment, step 2, squeezing, step 3, leaching, step 4, crude oil treatment, step 5, grease refining, and step 6, finished product treatment. Wherein the processing device in the step 2 comprises a machine box, an oil pressing mechanism, a driving mechanism, a cake pressing mechanism and a feeding mechanism, the method has the advantages that the oil yield is increased, the loss of vitamin E is reduced, the automation degree and safety are enhanced, and waste residue treatment is optimized, and the problems that in a traditional method, the vitamin E component is prone to damage, the production efficiency is low, and equipment is prone to damage are solved.

Description

Technical Field

[0001] The invention relates to the technical field of corn oil pressing, and in particular to a processing technology and a processing device suitable for producing high-dimensional E corn oil. Background Art

[0002] Corn oil, as an important edible vegetable oil, is widely used in the market. Traditional corn oil production methods mainly include pressing and leaching. However, these traditional methods have some shortcomings in the production process.

[0003] The traditional single pressing or leaching process cannot fully extract the oil in corn germ, resulting in a low oil yield, which affects the economic benefits. In the high-temperature treatment process, such as steaming, degumming, alkali refining and other steps, it is easy to cause a large loss of vitamin E (VE), a natural antioxidant component in corn oil, which reduces the nutritional value of the product. The existing corn oil production equipment has the problems of low automation and poor coordination in feeding, oil pressing and waste residue treatment, which not only increases the difficulty of operation, but also limits the improvement of production efficiency. There is no effective iron removal measure during the feeding process, and iron filings may be mixed into the raw materials, thereby damaging the internal components of the oil press; at the same time, the waste residue after pressing is not treated, the pores are too large, and it will take up a lot of storage space. Therefore, a processing technology and a processing device suitable for the production of high-dimensional E corn oil are needed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a processing technology and a processing device suitable for the production of high-vitamin E corn oil, which have the advantages of improving oil yield, reducing vitamin E loss, enhancing automation and safety, and optimizing waste residue treatment, and solves the problems of easy damage to vitamin E components, low production efficiency and easy damage to equipment in traditional methods.

[0005] To achieve the above object, the present invention provides the following technical solution: a processing technology suitable for the production of high-dimensional E corn oil, comprising the following steps; Step 1: Pre-treatment of raw materials: cleaning, crushing, softening, embryo rolling and steaming the corn raw materials; Step 2, pressing, putting the pretreated raw materials into a processing device, and obtaining crude oil and pre-pressed cake after one pressing; Step 3, leaching, placing the pre-pressed cake obtained in step 2 into an extractor, extracting the oil in the corn using an organic solvent, leaching to obtain wet meal, and desolventizing the wet meal to obtain crude oil in the pre-pressed cake; Step 4, crude oil treatment, degumming, alkali refining and decoloring the crude oil obtained in step 2 and step 3; Step 5, oil refining, the crude oil treated in step 4 is transported to the finished product tank after crystallization, crystal growth, centrifugation, vacuum gas analysis, deodorization and fine filtration; Step 6: Finished product processing: Take samples from the finished product tank for testing, and return unqualified oils to step 5 for secondary refining.

[0006] As a preferred processing technology suitable for the production of high-dimensional E corn oil of the present invention, the softening temperature in step 1 is 60-80°C, the time is 15-30 minutes, the steaming and frying temperature is 100-120°C, and the time is 20-30 minutes. Too high a temperature will cause a large loss of VE. At the same time, during the steaming and frying process, it is necessary to ensure that the material is heated evenly to avoid local overheating. The leaching solvent is n-hexane, the leaching temperature is 50-60°C, and the time is 90-120 minutes. The leaching process must be carried out in a closed environment to prevent solvent volatilization and oil oxidation.

[0007] As a preferred processing technology suitable for the production of high-dimensional E corn oil of the present invention, the alkali solution concentration in step 4 is 10%-15%, the reaction temperature is 60-70°C, and the reaction time is 20-30 minutes. Care should be taken to avoid excessive alkali solution to avoid VE loss. The drying temperature is 100-110°C and the vacuum degree is -0.1MPa to ensure that the moisture in the oil is completely removed, but avoid long-term high-temperature drying.

[0008] As a preferred processing technology suitable for the production of high-dimensional E corn oil of the present invention, in the step 5, the deodorization temperature is 180-200°C, the time is 60-90 minutes, and the vacuum degree is -0.095MPa. Deodorization is most likely to cause VE loss, so low-temperature and long-term heating is used for deodorization.

[0009] As a preferred processing technology suitable for the production of high-dimensional E corn oil of the present invention, in step 2, the processing device includes a chassis, an oil pressing mechanism, a driving mechanism, a cake pressing mechanism and a feeding mechanism, the chassis includes an equipment box, an inspection cover and a protective cover, the inspection cover is detachably mounted on the top of the equipment box, and the protective cover is fixedly mounted on the side end surface of the equipment box; The oil pressing mechanism comprises a pressing chamber, a spiral shaft and a heater, wherein the pressing chamber is fixedly mounted on the side of the equipment box, the spiral shaft is mounted in the pressing chamber and is rotatably connected thereto, the upper end surface of the pressing chamber is provided with a feeding port, the lower end surface of the pressing chamber is provided with an oil outlet, and the end of the pressing chamber is provided with a slag discharge port; The feeding mechanism comprises a feeding hopper, a feeding turntable, a brush plate, a first baffle plate, a second baffle plate and a third baffle plate, and the feeding mechanism is installed at the upper end of the feeding port; The cake pressing mechanism comprises a sleeve, a cake pressing cylinder, a reciprocating screw rod, an ejector plate and a spring, and the cake pressing mechanism is installed at the slag discharge port of the pressing chamber; The driving mechanism comprises a driving motor, a reducer, a first transmission shaft and a second transmission shaft. The driving mechanism is installed in a chassis to drive an oil pressing mechanism, a cake pressing mechanism and a feeding mechanism.

[0010] As a preferred processing technology suitable for the production of high-dimensional E corn oil of the present invention, the feeding hopper is provided with a feeding chamber and a cleaning chamber that are interconnected, the feeding chamber is provided with a first baffle plate, a second baffle plate and a third baffle plate, the second baffle plate and the third baffle plate are located between the feeding chamber and the cleaning chamber, the sides of the first baffle plate, the second baffle plate and the third baffle plate are provided with arc grooves that fit with the feeding turntable, the front and rear sides of the feeding turntable are provided with a first rotating shaft that is rotatably connected to the feeding hopper, the sides of the feeding turntable are evenly provided with feeding troughs, the feeding turntable is provided with magnets that fit with the feeding troughs, the front and rear sides of the brush disc are provided with second rotating shafts, the brush disc is installed in the cleaning chamber and is rotatably connected to the feeding hopper through the second rotating shaft, the sides of the brush disc are provided with flexible scrapers, and the bottom of the cleaning chamber is provided with a debris outlet.

[0011] As a preferred processing technology suitable for the production of high-dimensional E corn oil of the present invention, the sleeve is fixedly installed in the pressing chamber near the slag discharge port, the cake pressing cylinder is installed in the pressing chamber and is slidably connected to the pressing chamber, the reciprocating screw rod passes through the side end surface of the sleeve and is rotatably connected to the sleeve, a sliding sleeve cooperating with the reciprocating screw rod is provided on the right side of the cake pressing cylinder, a limiting groove is provided on the sliding sleeve, and a limiting rod slidably cooperating with the limiting groove is provided on the inner end surface of the sleeve.

[0012] As a preferred processing technology suitable for the production of high-dimensional E corn oil of the present invention, a molding groove is provided on the side of the cake press cylinder near the slag discharge port, the ejector plate is installed in the molding groove and is slidably connected to the cake press cylinder, a guide rod slidingly matched with the cake press cylinder is provided on the right side of the ejector plate, the axis of the guide rod coincides with the axis of the reciprocating screw, a limiting plate is provided at the end of the guide rod, the spring is sleeved on the guide rod, the ejector plate and the cake press cylinder are elastically slidably connected via a spring, a universal ball is provided near the end of the reciprocating screw near the guide rod end, a slag cake outlet is provided at the bottom of the cake press cylinder, and the side wall of the molding groove is frosted.

[0013] As a preferred processing technology suitable for the production of high-dimensional E corn oil of the present invention, the drive motor and the reducer are fixedly installed in the casing, the output shaft of the drive motor is provided with a first synchronous wheel, the input shaft of the reducer is provided with a second synchronous wheel, the first synchronous wheel and the second synchronous wheel are provided with a first synchronous belt for transmission, the spiral shaft is fixedly installed on the output shaft of the reducer, the output shaft of the reducer is provided with a third synchronous wheel and a fourth synchronous wheel, the first transmission shaft and the second transmission shaft are installed on the chassis and are rotatably connected thereto, the first transmission shaft is provided with a fifth synchronous wheel cooperating with the third synchronous wheel, and the third synchronous wheel and the fifth synchronous wheel are provided with a second synchronous belt for transmission , a seventh synchronous wheel cooperating with the fourth synchronous wheel is provided on the second transmission shaft, a third synchronous belt for transmission is provided on the fourth synchronous wheel and the seventh synchronous wheel, a sixth synchronous wheel is provided on the end of the first transmission shaft away from the fifth synchronous wheel, an eighth synchronous wheel cooperating with the sixth synchronous wheel is provided on the reciprocating screw rod, a fourth synchronous belt for transmission is sleeved on the sixth synchronous wheel and the eighth synchronous wheel, a first gear bevel is provided on the end of the second transmission shaft away from the seventh synchronous wheel, a second gear bevel meshing with the first gear bevel is provided on the first rotating shaft, a first gear is provided on the first rotating shaft, a second gear meshing with the first gear is provided on the second rotating shaft, and a transmission ratio of the first gear to the second gear is 3:1.

[0014] Preferably, the heater is sleeved on the pressing chamber and fixedly connected thereto, and a heating wire and a temperature control switch are provided in the heater.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts a process of first pressing and then leaching, firstly obtains crude oil and pre-pressed cake by pressing, and then performs leaching treatment on the pre-pressed cake, so as to fully extract the oil in corn and improve the oil yield. Subsequently, the crude oil is subjected to degumming, alkali refining, decolorization, crystallization, crystal cultivation, centrifugation, vacuum gas analysis, deodorization and fine filtration in sequence, and impurities, phospholipids, free fatty acids, pigments and peculiar smell in the crude oil are gradually removed, so that the quality of the oil is significantly improved and the quality requirements of finished corn oil are met. In the whole production process, the temperature, time and other parameters of each link are strictly controlled, which can effectively reduce the loss of VE, thereby ensuring that the produced corn oil is rich in VE and improving the nutritional value and quality of the product.

[0016] 2. The present invention sets a feeding chamber and a cleaning chamber in the feeding hopper of the processing device, and cooperates with a plurality of baffle plates to prevent corn kernels from leaking. The feeding speed can be adjusted by controlling the rotation speed of the feeding turntable to prevent corn accumulation from clogging the pressing chamber, thereby ensuring a smooth feeding process and safe and stable operation of the equipment. At the same time, the magnet on the feeding turntable can absorb the debris remaining in the raw material to prevent iron chips from entering the pressing chamber and causing equipment damage. The brush plate can scrape the iron chips absorbed in the feeding trough to the cleaning chamber and discharge them.

[0017] 3. The present invention arranges a cake pressing cylinder at the slag discharge port, and presses the strip-shaped porous slag discharged from the slag discharge port into a flat cake-shaped solid structure under the action of a reciprocating screw rod, thereby reducing the storage space occupied by the slag and facilitating the subsequent leaching treatment of the waste slag. At the same time, through the structural design of the ejection plate, spring, guide rod and universal ball, it is ensured that the slag cake can be smoothly formed and discharged, thereby improving the cake pressing efficiency and quality.

[0018] 4. The present invention drives the oil pressing mechanism, the feeding mechanism and the cake pressing mechanism at the same time through the driving motor, so that the feeding speed of the feeding mechanism and the cake pressing speed of the cake pressing mechanism are proportional to the oil pressing speed of the oil press. When the oil pressing rate changes, the speed of the entire equipment can be adjusted by changing the speed of the driving motor with one button, which greatly reduces the difficulty of adjusting the equipment and improves the production efficiency and the coordination of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the transmission mechanism structure of the present invention; Figure 4 It is a front cross-sectional view of the coordinated state of the feeding mechanism, the oil pressing mechanism and the cake pressing mechanism of the present invention; Figure 5 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 6 For the present invention Figure 4 Enlarged view of point B in the middle; Figure 7 For the present invention Figure 3 Enlarged view of center C Figure 8 It is a process flow chart of the present invention.

[0020] In the figure: 1, chassis; 101, equipment box; 102, inspection cover; 103, protective cover; 2, oil pressing mechanism; 201, pressing chamber; 2011, oil outlet; 2012, slag outlet; 2013, feeding port; 202, screw shaft; 203, heater; 2031, heating wire; 2032, temperature control switch; 3, driving mechanism; 301, driving motor; 3011, first synchronous wheel; 3012, first synchronous belt; 3 02, reducer; 3021, second synchronous wheel; 3022, third synchronous wheel; 3023, fourth synchronous wheel; 3024, third synchronous belt; 3025, second synchronous belt; 303, first transmission shaft; 3031, fifth synchronous wheel; 3032, sixth synchronous wheel; 3033, fourth synchronous belt; 304, second transmission shaft; 3041, seventh synchronous wheel; 3042, first gear bevel; 4, cake pressing mechanism; 401, Sleeve; 4011, limit rod; 4012, slag cake outlet; 402, cake pressing cylinder; 4021, sliding sleeve; 4022, limit groove; 4023, shaping groove; 403, reciprocating screw; 4031, eighth synchronous wheel; 4032, universal ball; 404, ejector plate; 4041, guide rod; 4042, limit plate; 405, spring; 5, feeding mechanism; 501, feeding hopper; 5011, unloading chamber; 5012 , cleaning chamber; 5013, debris outlet; 502, feed turntable; 5021, first rotating shaft; 5022, second gear bevel; 5023, first gear; 5024, feed trough; 5025, magnet; 503, brush plate; 5031, second rotating shaft; 5032, second gear; 5033, flexible scraper; 504, first baffle plate; 5041, arc groove; 505, second baffle plate; 506, third baffle plate. DETAILED DESCRIPTION

[0021] See also Figure 8 , a processing technology suitable for the production of high-dimensional E corn oil, comprising the following steps; Step 1: Pre-treatment of raw materials: cleaning, crushing, softening, embryo rolling and steaming the corn raw materials; First, the corn raw materials are thoroughly and carefully cleaned, and impurities such as stones, soil and other foreign matter are removed by screening equipment to ensure the purity of the raw materials entering the subsequent processing links. Then, the cleaned corn is crushed into appropriate particle sizes using a crusher, which helps the subsequent softening, embryo rolling and other processes to be carried out efficiently, making the internal structure of the corn easier to process, thereby improving the efficiency of oil extraction; In the softening process, the crushed corn kernels are placed in a special softening device, and the temperature is precisely controlled within the range of 60-80°C for 15-30 minutes. This can not only soften the corn kernels appropriately, facilitating the subsequent flaking operation, but also avoid the loss of vitamin E due to excessively high temperature. During the softening process, uniform heating and proper stirring are used to ensure that each corn kernel is evenly heated to achieve an ideal softening effect. The softened corn enters the flaking process, where it is pressed into thin flakes by a flaking machine. This step can destroy the structure of corn cells, making it easier to extract oil in subsequent processing. The subsequent steaming and frying process is crucial. The corn germs after rolling are steamed and fried at a temperature of 100-120℃ for 20-30 minutes. During the steaming and frying process, the materials must be heated evenly at all times. Advanced heating equipment and stirring devices are used to prevent local overheating. Local overheating may cause a large amount of VE decomposition, seriously affecting the nutritional value of corn oil. Steaming and frying can not only further destroy the cell structure, but also cause protein coagulation and denaturation, reduce the viscosity of the oil, and increase the oil yield. At the same time, it also creates good conditions for the subsequent pressing process; Step 2, pressing, putting the pretreated raw materials into a processing device, and obtaining crude oil and pre-pressed cake after one pressing; The pre-treated raw materials are put into a specially designed processing device for pressing operation, so that the oil in the corn germ is squeezed out. After one pressing, crude oil and pre-pressed cake are obtained. Before pressing, the iron chips are removed again. After pressing, the filter residue is squeezed to make pre-pressed cake. Step 3, leaching, placing the pre-pressed cake obtained in step 2 into an extractor, extracting the oil in the corn using an organic solvent, leaching to obtain wet meal, and desolventizing the wet meal to obtain crude oil in the pre-pressed cake; The pre-pressed cake obtained in step 2 is placed in an extractor, and n-hexane is selected as the leaching solvent. This is because n-hexane has good solubility for oils and fats, and is relatively easy to separate in the subsequent desolventizing treatment. The leaching temperature is strictly controlled at 50-60°C, the time is 90-120 minutes, and the entire leaching process is carried out in a closed environment. The maintenance of the closed environment relies on advanced sealing equipment and strict operating procedures to prevent environmental pollution and economic losses caused by solvent volatilization, and at the same time avoid oxidation reaction of oils and fats in contact with air, thereby ensuring the quality and stability of the oils and fats. During the leaching process, the solvent extracts the residual oils and fats in the pre-pressed cakes through diffusion to obtain wet meal. After that, the wet meal is subjected to desolventizing treatment, and the solvent in the wet meal is evaporated and recovered by heating, decompression, etc. using special desolventizing equipment, and crude oil in the pre-pressed cake is obtained at the same time, so as to fully extract the raw material oils and fats; Step 4, crude oil treatment, degumming, alkali refining and decoloring the crude oil obtained in step 2 and step 3; The degumming process adopts the method of hydration degumming or acid refining degumming, adding an appropriate amount of water or acid to the crude oil to make the phospholipids and other colloidal impurities in the crude oil condense and precipitate, and then separate and remove them by centrifugation or filtration, thereby improving the stability and transparency of the oil; In the alkali refining process, 10%-15% alkali solution is used at a reaction temperature of 60-70℃ and the reaction time is controlled at 20-30 minutes. During this process, the alkali solution reacts with the free fatty acids in the crude oil to generate soap and precipitate, while also removing some impurities and pigments. Decolorization uses activated clay, activated carbon and other adsorbents to remove the pigments in the crude oil, making the color of the oil lighter and clearer, meeting the appearance requirements of the finished corn oil; Step 5, oil refining, the crude oil treated in step 4 is transported to the finished product tank after crystallization, crystal growth, centrifugation, vacuum gas analysis, deodorization and fine filtration; The crystallization and crystal growth process is based on the difference in melting points of different components in the oil and fat. By controlling conditions such as temperature and stirring speed, the high melting point substances in the oil and fat are crystallized and precipitated, and the crystals are allowed to grow fully within an appropriate time, creating favorable conditions for subsequent separation operations; Centrifugal operation uses the centrifugal force generated by the high-speed rotation of the centrifuge to separate the solid impurities and liquid oil in the crystallized oil, further improving the purity of the oil; Vacuum gasification is to extract dissolved gases such as oxygen and carbon dioxide in oils and fats under vacuum environment, which can reduce the oxidation risk of oils and fats during storage and use, extend the shelf life of oils and fats, and also help improve the quality and stability of oils and fats; The deodorization process is carried out at a temperature of 180-200°C for 60-90 minutes, and the vacuum degree is maintained at about -0.01MPa. The deodorization is carried out by heating at low temperature for a long time. Under such relatively mild deodorization conditions, the odor can be effectively removed while minimizing the loss of VE and ensuring the nutritional value of corn oil. Use high-precision filtering equipment, such as membrane filters, filter paper filters, etc., to completely remove tiny impurities in the oil, so that the oil reaches a higher purity and transparency standard, and then transfer it to the finished product tank for storage; Step 6: Finished product processing: sampling and testing the samples in the finished product tank, and returning the unqualified oil to step 5 for secondary refining; Corn oil samples in finished product tanks are sampled and tested regularly and in a standardized manner. The test items include various quality indicators such as the acid value, peroxide value, color, odor, VE content, etc. of the oil to ensure that the product meets the relevant national standards and internal quality requirements of the company.

[0022] Furthermore, in step 1, the softening temperature is 60-80°C, the time is 15-30 minutes, the steaming and frying temperature is 100-120°C, and the time is 20-30 minutes. Too high a temperature will cause a large loss of VE. At the same time, during the steaming and frying process, the material must be heated evenly to avoid local overheating. The leaching solvent is n-hexane, the leaching temperature is 50-60°C, and the time is 90-120 minutes. The leaching process must be carried out in a closed environment to prevent solvent volatilization and oil oxidation.

[0023] Furthermore, in step 4, the concentration of alkali solution is 10%-15%, the reaction temperature is 60-70°C, and the reaction time is 20-30 minutes. Care should be taken to avoid excessive alkali solution to avoid VE loss. The drying temperature is 100-110°C and the vacuum degree is -0.1MPa to ensure that the moisture in the oil is completely removed, but avoid long-term high-temperature drying.

[0024] Furthermore, in step 5, the deodorization temperature is 180-200°C, the time is 60-90 minutes, and the vacuum degree is -0.095MPa. Deodorization is most likely to cause VE loss, so low temperature and long time heating are used for deodorization.

[0025] See also Figure 1-Figure 8 In step 2, the processing device includes a chassis 1, an oil pressing mechanism 2, a driving mechanism 3, a cake pressing mechanism 4 and a feeding mechanism 5. The chassis 1 includes an equipment box 101, an inspection cover 102 and a protective cover 103. The inspection cover 102 is detachably mounted on the top of the equipment box 101, and the protective cover 103 is fixedly mounted on the side end surface of the equipment box 101; The oil pressing mechanism 2 includes a pressing chamber 201, a screw shaft 202 and a heater 203. The pressing chamber 201 is fixedly mounted on the side of the equipment box 101. The screw shaft 202 is mounted in the pressing chamber 201 and is rotatably connected thereto. A feeding port 2013 is disposed on the upper end surface of the pressing chamber 201. An oil outlet 2011 is disposed on the lower end surface of the pressing chamber 201. A slag discharge port 2012 is disposed at the end of the pressing chamber 201. The feeding mechanism 5 includes a feeding hopper 501, a feeding turntable 502, a brush plate 503, a first baffle plate 504, a second baffle plate 505 and a third baffle plate 506. The feeding mechanism 5 is installed at the upper end of the feeding port 2013; The cake pressing mechanism 4 includes a sleeve 401, a cake pressing cylinder 402, a reciprocating screw rod 403, an ejector plate 404 and a spring 405. The cake pressing mechanism 4 is installed at the slag discharge port 2012 of the pressing chamber 201. The driving mechanism 3 includes a driving motor 301 , a reducer 302 , a first transmission shaft 303 and a second transmission shaft 304 . The driving mechanism 3 is installed in the chassis 1 to drive the oil pressing mechanism 2 , the cake pressing mechanism 4 and the feeding mechanism 5 .

[0026] Furthermore, the feeding hopper 501 is provided with a feeding chamber 5011 and a cleaning chamber 5012 which are interconnected, and the feeding chamber 5011 is provided with a first baffle plate 504, a second baffle plate 505 and a third baffle plate 506, the second baffle plate 505 and the third baffle plate 506 are located between the feeding chamber 5011 and the cleaning chamber 5012, and the sides of the first baffle plate 504, the second baffle plate 505 and the third baffle plate 506 are provided with arc grooves 5041 which fit the feeding turntable 502, and the front and rear sides of the feeding turntable 502 are provided with arc grooves 5041 which fit the feeding turntable 502. A first rotating shaft 5021 is provided which is rotatably connected to the feeding hopper 501, feeding grooves 5024 are evenly arranged on the sides of the feeding turntable 502, a magnet 5025 which fits with the feeding grooves 5024 is arranged in the feeding turntable 502, a second rotating shaft 5031 is arranged on the front and rear sides of the brush plate 503, the brush plate 503 is installed in the cleaning chamber 5012 and is rotatably connected to the feeding hopper 501 through the second rotating shaft 5031, a flexible scraper 5033 is arranged on the side of the brush plate 503, and a debris outlet 5013 is arranged at the bottom of the cleaning chamber 5012.

[0027] When the feeding turntable 502 rotates, corn kernels fall into the feeding trough 5024 on the top of the feeding turntable 502. As the feeding turntable 502 rotates, the feeding turntable 502 delivers the corn kernels to the feeding port 2013, so that the feeding speed is adjusted by controlling the rotation speed of the feeding turntable 502 to avoid corn accumulation and blockage of the pressing chamber 201. The magnet 5025 absorbs the debris that may remain in the raw material to avoid iron filings from entering the pressing chamber 201 and causing equipment damage. Although the possibility of residual iron filings after pre-treatment is very small, it is still necessary to remove iron by adsorption. Once iron filings enter the pressing chamber 201, the fixture spiral shaft 202 may be worn at the least, reducing the oil output rate, or causing equipment damage at the worst. Through the cooperation of multiple baffle plates, gaps in the unloading chamber 5011 are avoided to cause continuous leakage of corn kernels. The iron filings adsorbed in the feeding trough 5024 are scraped into the cleaning chamber 5012 by the flexible scraper 5033 on the side of the brush plate 503, and finally discharged from the debris outlet 5013.

[0028] Furthermore, the sleeve 401 is fixedly installed in the pressing chamber 201 near the slag discharge port 2012, the cake pressing cylinder 402 is installed in the pressing chamber 201 and is slidably connected to it, the reciprocating screw rod 403 passes through the side end surface of the sleeve 401 and is rotatably connected to it, and a sliding sleeve 4021 cooperating with the reciprocating screw rod 403 is provided on the right side of the cake pressing cylinder 402, a limiting groove 4022 is provided on the sliding sleeve 4021, and a limiting rod 4011 slidably cooperating with the limiting groove 4022 is provided on the inner end surface of the sleeve 401.

[0029] When the reciprocating screw 403 rotates, the cake pressing cylinder 402 slides back and forth along the reciprocating screw 403 under the action of the sliding sleeve 4021, thereby pressing the strip-shaped porous slag discharged from the slag discharge port 2012 into a flat cake-shaped solid structure, reducing the storage space occupied by the slag and facilitating the subsequent leaching treatment of the waste slag.

[0030] Furthermore, a shaping groove 4023 is provided on the side of the cake pressing cylinder 402 near the slag discharge port 2012, and an ejector plate 404 is installed in the shaping groove 4023 and is slidably connected to the cake pressing cylinder 402. A guide rod 4041 that slides with the cake pressing cylinder 402 is provided on the right side of the ejector plate 404, and the axis of the guide rod 4041 coincides with the axis of the reciprocating screw 403. A limiting plate 4042 is provided at the end of the guide rod 4041, and a spring 405 is sleeved on the guide rod 4041. The ejector plate 404 and the cake pressing cylinder 402 are elastically slidably connected via the spring 405. A universal ball 4032 is provided on the end of the reciprocating screw 403 near the guide rod 4041. A slag cake outlet 4012 is provided at the bottom of the cake pressing cylinder 402, and the side wall of the shaping groove 4023 is frosted.

[0031] When the cake pressing cylinder 402 moves toward the pressing chamber 201, the discharged strip-shaped waste residue is squeezed into a cake-shaped structure, and the waste residue moves to the right along with the cake pressing cylinder 402 in the shaping groove 4023 until the reciprocating screw 403 squeezes the guide rod 4041, thereby causing the ejection plate 404 to move to the left, ejecting the residue cake in the shaping groove 4023 and discharging it from the residue cake outlet 4012 at the lower end. The universal ball 4032 effectively reduces the friction between the reciprocating screw 403 and the limit plate 4042 to avoid affecting the smoothness of the rotation of the reciprocating screw 403. By frosting the side wall of the shaping groove 4023, the friction between the residue cake and the cake pressing cylinder 402 is increased, thereby ensuring that the residue cake can move to the right along with the cake pressing cylinder 402.

[0032] Further, the drive motor 301 and the reducer 302 are fixedly installed in the casing, the output shaft of the drive motor 301 is provided with a first synchronous wheel 3011, the input shaft of the reducer 302 is provided with a second synchronous wheel 3021, the first synchronous wheel 3011 and the second synchronous wheel 3021 are provided with a first synchronous belt 3012 for transmission, the spiral shaft 202 is fixedly installed on the output shaft of the reducer 302, the output shaft of the reducer 302 is provided with a third synchronous wheel 3022 and a fourth synchronous wheel 3023, the first transmission shaft 303 and the second transmission shaft 304 are installed on the chassis 1 and are rotatably connected thereto, the first transmission shaft 303 is provided with a fifth synchronous wheel 3031 matched with the third synchronous wheel 3022, the third synchronous wheel 3022 and the fifth synchronous wheel 3031 are provided with a second synchronous belt 3025 for transmission, the second transmission shaft 304 is provided with a The seventh synchronous wheel 3041 is provided on the fourth synchronous wheel 3023 and the seventh synchronous wheel 3041, and the third synchronous belt 3024 for transmission is provided on the fourth synchronous wheel 3023 and the seventh synchronous wheel 3041. The sixth synchronous wheel 3032 is provided on the end of the first transmission shaft 303 away from the fifth synchronous wheel 3031. The eighth synchronous wheel 4031 cooperating with the sixth synchronous wheel 3032 is provided on the reciprocating screw rod 403. The fourth synchronous belt 3033 for transmission is sleeved on the sixth synchronous wheel 3032 and the eighth synchronous wheel 4031. The first gear bevel 3042 is provided on the end of the second transmission shaft 304 away from the seventh synchronous wheel 3041. The second gear bevel 5022 meshing with the first gear bevel 3042 is provided on the first rotating shaft 5021. The first gear 5023 is provided on the first rotating shaft 5021. The second gear 5032 meshing with the first gear 5023 is provided on the second rotating shaft 5031. The transmission ratio of the first gear 5023 to the second gear 5032 is 3:1.

[0033] The driving motor 301 simultaneously transmits the oil pressing mechanism 2, the feeding mechanism 5 and the cake pressing mechanism 4, so that the feeding speed of the feeding mechanism 5 and the cake pressing speed of the cake pressing mechanism 4 are proportional to the oil pressing speed of the oil press. Therefore, when the oil pressing rate changes, the feeding speed and the cake pressing rate also change, which greatly reduces the difficulty of adjusting the equipment. The overall speed regulation of the entire equipment can be completed by changing the speed of the driving motor 301 with one button.

[0034] Furthermore, the heater 203 is sleeved on the pressing chamber 201 and fixedly connected thereto, and a heating wire 2031 and a temperature control switch 2032 are provided in the heater 203 .

[0035] The pressing chamber 201 is heated by the heater 203 to improve the corn oil yield, and the temperature of the heating wire 2031 is controlled by the temperature control switch 2032 to avoid VE loss caused by excessive temperature of the heater 203.

[0036] When the present device is in use, the corn raw materials that have been pre-treated by cleaning, crushing, softening, embryo rolling and steaming are poured into the feeding hopper 501. As the feeding turntable 502 rotates, the corn particles will fall into the feeding trough 5024 on the top of the feeding turntable 502. Since the feeding troughs 5024 are evenly arranged on the side of the feeding turntable 502, the speed of the feeding turntable 502 is controlled by the speed of the driving motor 301, so that the feeding speed can be accurately adjusted to prevent the accumulation of corn from causing the pressing chamber 201 to be blocked. During the rotation of the feeding turntable 502, the magnet 5025 arranged inside it will absorb the iron filings that may remain in the raw materials. Even if the possibility of residual iron filings is small after the early pre-treatment of the raw materials, the adsorption and iron removal operation is still required to avoid To prevent iron filings from entering the pressing chamber 201 and causing damage to the equipment, after the feeding turntable 502 delivers the corn kernels to the feeding port 2013, the corn kernels enter the pressing chamber 201 and the pressing process begins. The corn raw materials entering the pressing chamber 201 are pushed by the screw shaft 202 and move forward along the pressing chamber 201. The rotation of the screw shaft 202 is driven by the driving motor 301 through the reducer 302. During this process, the heater 203 set on the pressing chamber 201 starts to work and heats the pressing chamber 201 according to the preset temperature, so that the corn raw materials are pressed under a suitable temperature environment, thereby improving the corn oil yield. As the screw shaft 202 rotates and squeezes continuously, oil is squeezed out of the corn raw materials and the oil is discharged through the oil outlet at the lower end surface of the pressing chamber 201. The oil flows out of the outlet 2011 and is collected in the corresponding container to obtain crude oil, while the residue after pressing is pushed to the end slag discharge outlet 2012 of the pressing chamber 201. When the residue is discharged from the slag discharge outlet 2012 of the pressing chamber 201, the cake pressing mechanism 4 starts to work, and the driving motor 301 drives the reciprocating screw rod 403 to rotate through the transmission system. Since a sliding sleeve 4021 is provided on the right side of the cake pressing cylinder 402 to cooperate with the reciprocating screw rod 403, the limiting groove 4022 on the sliding sleeve 4021 cooperates with the limiting rod 4011 in the sleeve 401, so that the cake pressing cylinder 402 slides back and forth along the reciprocating screw rod 403 under the action of the sliding sleeve 4021. When the reciprocating screw rod 403 rotates, the cake pressing cylinder 402 moves toward the pressing chamber 201 to press the cake. The strip-shaped porous slag discharged from the slag discharge port 2012 is squeezed into the shaping groove 4023 and gradually pressed into a flat cake-shaped solid structure, reducing the storage space occupied by the slag and facilitating the later leaching treatment of the waste slag. In the process of the cake pressing cylinder 402 moving toward the pressing chamber 201 and squeezing the waste slag into a cake-shaped structure, the waste slag moves to the right with the cake pressing cylinder 402 in the shaping groove 4023. When the reciprocating screw rod 403 squeezes the guide rod 4041, the limiting plate 4042 at the end of the guide rod 4041 is subjected to pressure, overcoming the elastic force of the spring 405, causing the ejection plate 404 to move to the left, ejecting the slag cake in the shaping groove 4023, and the slag cake is discharged through the slag cake outlet 4012 at the bottom of the cake pressing cylinder 402, completing the cake pressing and discharge process of the waste slag.During this process, the universal ball 4032 effectively reduces the friction between the reciprocating screw 403 and the limit plate 4042, avoiding affecting the smoothness of the rotation of the reciprocating screw 403 and ensuring the smooth progress of the cake pressing operation. When the production task is completed, first stop feeding raw materials into the feeding hopper 501, and then gradually reduce the speed of the drive motor 301 until the equipment stops running completely.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A processing technology suitable for the production of high-dimensional E corn oil, characterized in that: The steps include: Step 1: Pre-treatment of raw materials: cleaning, crushing, softening, embryo rolling and steaming the corn raw materials; Step 2, pressing, putting the pretreated raw materials into a processing device, and obtaining crude oil and pre-pressed cake after one pressing; Step 3, leaching, placing the pre-pressed cake obtained in step 2 into an extractor, extracting the oil in the corn using an organic solvent, leaching to obtain wet meal, and desolventizing the wet meal to obtain crude oil in the pre-pressed cake; Step 4, crude oil treatment, degumming, alkali refining and decoloring the crude oil obtained in step 2 and step 3; Step 5, oil refining, the oil treated in step 4 is transported to the finished product tank after crystallization, crystal growth, centrifugation, vacuum gas analysis, deodorization and fine filtration; Step 6: Finished product processing: Take samples from the finished product tank for testing, and return unqualified oils to step 5 for secondary refining.

2. A processing technology suitable for the production of high-dimensional E corn oil as claimed in claim 1, characterized in that: In the step 1, the softening temperature is 60-80° C., the time is 15-30 minutes, the steaming temperature is 100-120° C., the time is 20-30 minutes, and the leaching solvent is n-hexane, the leaching temperature is 50-60° C., and the time is 90-120 minutes.

3. A processing technology suitable for the production of high-dimensional E corn oil as claimed in claim 1, characterized in that: In step 4, the concentration of the alkali solution is 10%-15%, the reaction temperature is 60-70°C, the time is 20-30 minutes, the drying temperature is 100-110°C, and the vacuum degree is -0.1MPa.

4. A processing technology suitable for the production of high-dimensional E corn oil as claimed in claim 1, characterized in that: In the step 5, the deodorization temperature is 180-200° C., the time is 60-90 minutes, and the vacuum degree is -0.095 MPa.

5. A processing technology suitable for the production of high-dimensional E corn oil as claimed in claim 1, characterized in that: In step 2, the processing device comprises a chassis (1), an oil pressing mechanism (2), a driving mechanism (3), a cake pressing mechanism (4) and a feeding mechanism (5); The chassis (1) comprises an equipment box (101), an inspection cover (102) and a protective cover (103), wherein the inspection cover (102) is detachably mounted on the top of the equipment box (101), and the protective cover (103) is fixedly mounted on a side end surface of the equipment box (101); The oil pressing mechanism (2) comprises a pressing chamber (201), a screw shaft (202) and a heater (203); the pressing chamber (201) is fixedly mounted on a side of the equipment box (101); the screw shaft (202) is mounted in the pressing chamber (201) and is rotatably connected thereto; a feeding port (213) is provided on the upper end surface of the pressing chamber (201); an oil outlet (211) is provided on the lower end surface of the pressing chamber (201); and a slag discharge port (212) is provided at the end of the pressing chamber (201); The feeding mechanism (5) comprises a feeding hopper (501), a feeding turntable (502), a brush plate (503), a first material baffle plate (504), a second material baffle plate (505) and a third material baffle plate (506); the feeding mechanism (5) is installed at the upper end of the feeding port (2013); The cake pressing mechanism (4) comprises a sleeve (401), a cake pressing cylinder (402), a reciprocating screw rod (403), an ejector plate (404) and a spring (405); the cake pressing mechanism (4) is installed at the slag discharge port (2012) of the pressing chamber (201); The driving mechanism (3) comprises a driving motor (301), a reducer (302), a first transmission shaft (303) and a second transmission shaft (304); the driving mechanism (3) is installed in the chassis (1) to drive the oil pressing mechanism (2), the cake pressing mechanism (4) and the feeding mechanism (5).

6. A processing technology suitable for the production of high-dimensional E corn oil as claimed in claim 5, characterized in that: The feeding hopper (501) is provided with a feeding chamber (5011) and a cleaning chamber (5012) which are interconnected. The feeding chamber (5011) is provided with a first material baffle plate (504), a second material baffle plate (505) and a third material baffle plate (506). The sides of the first material baffle plate (504), the second material baffle plate (505) and the third material baffle plate (506) are all provided with arc grooves (5041) which fit with the feeding turntable (502). The front and rear sides of the feeding turntable (502) are provided with first rotating shafts (5021) which are rotatably connected to the feeding hopper (501). Feeding grooves (5024) are evenly arranged on the side of the feeding turntable (502), and magnets (5025) that are in contact with the feeding grooves (5024) are arranged inside the feeding turntable (502). Second rotating shafts (5031) are arranged on the front and rear sides of the brush disc (503), and the brush disc (503) is installed in the cleaning chamber (5012) and is rotatably connected to the feeding hopper (501) via the second rotating shaft (5031). Flexible scrapers (5033) are arranged on the side of the brush disc (503), and a debris outlet (5013) is arranged at the bottom of the cleaning chamber (5012).

7. A processing technology suitable for the production of high-dimensional E corn oil as claimed in claim 6, characterized in that: The sleeve (401) is fixedly mounted on the pressing chamber (201) near the slag discharge port (2012); the cake pressing cylinder (402) is mounted in the pressing chamber (201) and is slidably connected thereto; the reciprocating screw rod (403) passes through the side end surface of the sleeve (401) and is rotatably connected thereto; a sliding sleeve (4021) cooperating with the reciprocating screw rod (403) is arranged on the right side of the cake pressing cylinder (402); a limiting groove (4022) is arranged on the sliding sleeve (4021); and a limiting rod (4011) slidably cooperating with the limiting groove (4022) is arranged on the inner end surface of the sleeve (401).

8. A processing technology suitable for the production of high-dimensional E corn oil as claimed in claim 7, characterized in that: The cake pressing cylinder (402) is provided with a shaping groove (4023) on the side close to the slag discharge port (2012); the ejection plate (404) is installed in the shaping groove (4023) and is slidably connected to the cake pressing cylinder (402); a guide rod (4041) slidably matched with the cake pressing cylinder (402) is provided on the right side of the ejection plate (404); a limit plate (4042) is provided at the end of the guide rod (4041); the spring (405) is sleeved on the guide rod (4041); the ejection plate (404) and the cake pressing cylinder (402) are elastically slidably connected via the spring (405); a universal ball (4032) is provided at the end of the reciprocating screw rod (403) close to the guide rod (4041); and a slag cake outlet (4012) is provided at the bottom of the cake pressing cylinder (402).

9. A processing technology suitable for the production of high-dimensional E corn oil as claimed in claim 8, characterized in that: The drive motor (301) and the reducer (302) are fixedly mounted in the housing; a first synchronous wheel (3011) is arranged on the output shaft of the drive motor (301); a second synchronous wheel (3021) is arranged on the input shaft of the reducer (302); a first synchronous belt (3012) for transmission is arranged on the first synchronous wheel (3011) and the second synchronous wheel (3021); the spiral shaft (202) is fixedly mounted on the output shaft of the reducer (302); and the reducer (302) The output shaft of the machine body (1) is provided with a third synchronous wheel (3022) and a fourth synchronous wheel (3023); the first transmission shaft (303) and the second transmission shaft (304) are mounted on the chassis (1) and are rotatably connected thereto; the first transmission shaft (303) is provided with a fifth synchronous wheel (3031) that cooperates with the third synchronous wheel (3022); the third synchronous wheel (3022) and the fifth synchronous wheel (3031) are provided with a second synchronous belt (3025) for transmission; the second transmission shaft (304) is provided with a fifth synchronous wheel (3031) that cooperates with the third synchronous wheel (3022); The fourth synchronous wheel (3023) is matched with a seventh synchronous wheel (3041), the fourth synchronous wheel (3023) and the seventh synchronous wheel (3041) are provided with a third synchronous belt (3024) for transmission, the end of the first transmission shaft (303) away from the fifth synchronous wheel (3031) is provided with a sixth synchronous wheel (3032), the reciprocating screw rod (403) is provided with an eighth synchronous wheel (4031) matched with the sixth synchronous wheel (3032), the sixth synchronous wheel (3032) and the eighth synchronous wheel ( A fourth synchronous belt (3033) for transmission is sleeved on the first rotating shaft (5021), a first gear (5032) is provided on the second rotating shaft (5031), a first gear (5032) is provided on the second rotating shaft (5031) at an end away from the seventh synchronous wheel (3041), a second gear (5032) is provided on the first rotating shaft (5021) and meshes with the first gear (5023), a first gear (5023) is provided on the first rotating shaft (5021), and a second gear (5032) is provided on the second rotating shaft (5031) and meshes with the first gear (5023).

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