Intelligent oil extraction machine and oil extraction process thereof

Abstract

The present invention provides an intelligent oil extraction machine and an oil extraction process thereof, which relates to the technical field of walnut oil processing, and mainly comprises a pulping machine and an extraction device: the pulping machine is used to grind the raw material into slurry; the extraction device is arranged at the discharge port of the pulping machine, and is used to perform water-oil extraction technology treatment on the slurry. The equipment provided by the present invention has a simple and compact structure and low cost. The method provided by the present invention can automatically perform improved water-based walnut oil extraction processing on walnut kernels, with a fast oil extraction speed and a high oil extraction rate, thereby keeping the nutritional components of the walnut oil intact and not being destroyed, the oil output has a good appearance, and is environmentally friendly and pollution-free.

Description

Technical Field

[0001] The invention relates to the technical field of walnut oil processing, in particular to an intelligent oil extraction machine and an oil extraction process thereof. Background Art

[0002] At present, modern oil production processes generally include pressing, organic solvent extraction, aqueous solution and supercritical fluid extraction, and the most commonly used method for walnut oil extraction is mechanical pressing. The mechanical pressing method has the characteristics of simple process, few supporting equipment and flexible production, but it has the problems of low oil yield and low comprehensive utilization rate of walnut kernels, especially severe denaturation of walnut protein, high residual oil rate, low recycling value and many other disadvantages.

[0003] The traditional aqueous method is a method of separating oil from protein by utilizing the difference in the "affinity" of non-oil components in oil to oil and water, and utilizing the different specific gravity of oil and water. The traditional aqueous method mainly includes processes such as peeling, grinding, extraction, separation, demulsification, and dehydration. The aqueous method has mild process conditions and can obtain slightly denatured protein while extracting oil.

[0004] Compared with other methods, the traditional aqueous method of oil extraction has obvious advantages: the degree of protein denaturation is low, which can better preserve the natural nutrients; at the same time, the process is simplified and production safety is guaranteed; in addition, as a physical method, water is used as a solvent, which will not pollute the product.

[0005] However, the traditional water-based method also has many disadvantages: low oil yield, low production efficiency, large amount of water used in oil extraction, and difficulty in utilizing cake residue, which results in great waste and prevents walnut resources from being fully utilized.

[0006] It can be seen that developing specialized equipment for water-based oil extraction to optimize the traditional water-based oil extraction process, improve processing efficiency and quality, and form an improved water-based oil extraction technology is the key to solving the walnut oil extraction problem. Summary of the invention

[0007] The object of the present invention is to provide an intelligent oil extraction machine and an oil extraction process thereof to solve at least one of the above-mentioned technical problems existing in the prior art.

[0008] In order to solve the above technical problems, the present invention provides an intelligent oil extraction machine, including a refiner and an extraction device: the refiner is used to grind the raw material into slurry; the extraction device is arranged at the outlet of the refiner, and is used to extract oil from the slurry based on the aqueous method.

[0009] Through the above structure, the technical purpose of automatically performing water-oil extraction technology treatment on raw materials such as walnuts based on the water-agent method can be achieved.

[0010] Furthermore, the intelligent oil extraction machine also includes an automatic feeding device, which is arranged at the feed port of the refiner and includes a motor, a conveying dragon and a feeding hopper; the conveying dragon is arranged in the feeding hopper and connects the feed port and the discharge port of the feeding hopper; the discharge port of the feeding hopper is connected to the feed port of the refiner, and one end of the conveying dragon away from the discharge port of the feeding hopper is connected to the motor;

[0011] Preferably, the conveying dragon is a vertical conveying dragon, the feeding hopper is a conical feeding hopper, the feeding diameter of the conical feeding hopper is larger than the discharging diameter of the conical feeding hopper, and the vertical structure saves the equipment floor space;

[0012] Preferably, the motor includes a speed regulating device for adjusting the conveying speed of the conveying dragon, thereby adjusting the feed amount.

[0013] Preferably, the refiner is a grinding mill, which belongs to the prior art, and its working principle is briefly described as follows:

[0014] When the motor of the grinding mill is running, it drives the connecting shaft and the grinding disc to run together. The material to be ground enters the grinding sleeve from the hopper. The grinding disc and the grinding sleeve move relative to each other to grind the material into small particles. Then the material enters between the two grinding discs. The small particles are crushed into fine powder particles through the relative movement of the teeth of the grinding discs. The powder particles flow out from the teeth of the grinding discs and are thrown to the inner wall of the grinding mill. They are scraped off by the scraper and flow out from the discharge port.

[0015] Furthermore, the extraction device is provided with a spiral blade for stirring the slurry.

[0016] Preferably, the spiral blades include left-handed spiral blades and right-handed spiral blades, and the left-handed spiral blades and the right-handed spiral blades are arranged side by side in the extraction device.

[0017] The above structure makes it easy to stir the slurry quickly, cyclically and evenly.

[0018] Furthermore, the extraction device also includes an electric heating plate, and the electric heating plate is arranged on the outer wall of the extraction device.

[0019] The above structure makes it easy to heat the extraction device to reach the process temperature of oil extraction by the water-agent method.

[0020] Preferably, the extraction device comprises an extraction tank for containing the slurry and performing stirring and heating.

[0021] Furthermore, the extraction tank is a W-shaped structure, and spiral blades are arranged in parallel in the two inner cavity bottoms of the extraction tank, so that the structure of the extraction device is simple and compact, and it is beneficial for the slurry to fully contact with the spiral blades and then be fully stirred.

[0022] Furthermore, a temperature detection device is provided on the inner wall of the extraction tank for displaying the temperature inside the extraction tank.

[0023] Furthermore, the intelligent oil extraction machine also includes a water adding device, which includes a water tank and a water pump: the water tank is provided with an electric heating device for heating the water; the water inlet of the water pump is connected to an external water source, the water outlet of the water pump is connected to the water inlet of the water tank, and the water outlet of the water tank is arranged above the extraction device.

[0024] Preferably, the water tank is also provided with a temperature detection device for displaying the temperature of the hot water in the water tank.

[0025] Through the above device, it is convenient to add hot water to the extraction device.

[0026] Furthermore, the intelligent oil extraction machine also includes a discharge device, which is arranged at one end of the extraction device where a discharge port is provided, and the discharge device includes a drainage hood and a cover body: the drainage hood wraps around the end of the extraction device, and a drainage port is provided at the bottom of the drainage hood; the cover body is arranged inside the drainage hood and movably covers the discharge port.

[0027] By moving the cover body, the oil and oil residue can flow out from the discharge port of the extraction device and converge and fall downward through the drainage port of the drainage cover.

[0028] Preferably, a sealing ring is provided at one end of the cover body facing the discharge port of the extraction device, which is used to seal the discharge port when the cover body covers the discharge port to prevent the slurry from overflowing from the discharge port during the stirring process.

[0029] Furthermore, it also includes a first electric push rod, the output shaft of the first electric push rod is connected to the cover body, and the body of the first electric push rod is fixed on the internal frame of the intelligent oil extraction machine.

[0030] The first electric push rod facilitates the electric drive of the cover body to move, and the opening and closing of the material outlet of the extraction device can be controlled simply and flexibly.

[0031] Furthermore, the intelligent oil extraction machine also includes a slag box, which is arranged below the extraction device. The slag box includes a detachable first filter part, which is used to filter the crude oil flowing out of the drainage port of the discharge device and collect the residue. The first filter part is arranged at the bottom of the slag box.

[0032] Preferably, the first filter part is a detachable filter screen, so that filter screens with different filter apertures can be replaced according to filtering accuracy requirements.

[0033] Furthermore, the slag collecting box also includes a vibration part for realizing vibration screening of the slag, the output shaft of the vibration part is connected to the first filter part, and the body of the vibration part is fixed to the outer wall of the slag collecting box.

[0034] Preferably, the vibration part is a one-way attached vibrator.

[0035] Furthermore, the intelligent oil extraction machine also includes an oil collecting box, which is arranged below the slag collecting box and is used to hold the fine oil filtered by the slag collecting box.

[0036] Furthermore, a guide rail is provided below the oil collecting tank, and the bottom of the oil collecting tank is fixed to one end of the guide rail slider. A waste water tank is provided at the other end of the guide rail slider for holding the waste water after washing of the extraction device and the discharge device, and the waste water flows out from the material port of the discharge device.

[0037] Furthermore, a second electric push rod is provided at one end of the guide rail slider that fixes the wastewater tank, the output shaft of the second electric push rod is connected to the guide rail slider, and the body of the second electric push rod is fixed on the internal frame of the intelligent oil extraction machine, and is used to drive the guide rail slider to move axially along the guide rail, so as to make the oil collecting tank or the wastewater tank reach below the drainage port of the drainage cover respectively.

[0038] Furthermore, the intelligent oil extraction machine also includes an oil pumping device, which is arranged below the extraction device, and the oil pumping device includes a second filter part and an oil pump: the oil inlet of the second filter part is connected to the oil collecting tank, the oil outlet of the second filter part is connected to the oil inlet of the oil pump, and the oil outlet of the oil pump is connected to an external oil pipeline.

[0039] Preferably, the second filter part is a detachable filter net or filter cotton.

[0040] The above structure facilitates fine filtering of the fine oil to produce essential oil, which is then bottled and stored externally.

[0041] Furthermore, the intelligent oil extraction machine also includes a driving device, the output shaft of the driving device is connected to the input shaft of the spiral blade of the extraction device, the driving device includes a reduction motor, a chain, a sprocket and a gear, the gear is fixedly connected to the output shaft of the reduction motor, the sprocket is fixedly connected to one end of the input shaft away from the extraction device, and the chain connects the gear and the sprocket.

[0042] The above structure is used to make the spiral blade rotate, thereby completing the function of stirring the slurry.

[0043] Furthermore, the intelligent oil extraction machine also includes a power distribution control system, including a distribution box and a computer display touch screen: the computer display touch screen is arranged on the upper part of the intelligent oil extraction machine, and is used to start and close the processing program, set and modify the process parameters; the distribution box is arranged on the inner side wall of the intelligent oil extraction machine.

[0044] Furthermore, the intelligent oil extraction machine also includes a cleaning device, including a water gun and a cleaning water pump: the water inlet of the cleaning water pump is connected to an external water source, and the water outlet of the cleaning water pump is connected to the water gun.

[0045] The cleaning device is convenient for manual handheld water guns to flush and clean the automatic feeding device, the pulping machine, the extraction device and the discharge device.

[0046] Furthermore, the intelligent oil extraction machine also includes a box body for protecting and supporting the above-mentioned components, and the material of the box body is stainless steel.

[0047] In another aspect, the present invention further provides an oil extraction process using the above-mentioned intelligent oil extraction machine, comprising the following steps:

[0048] Step 1: Clean the raw materials, remove impurities, sterilize and weigh the raw materials according to production capacity;

[0049] Step 2, start the refiner and the automatic feeding device, add the raw materials to the feeding port in batches, and after the refining is completed, turn off the refiner and the automatic feeding device, and manually clean the pulp residue in the refiner;

[0050] Step 3, after the slurry enters the extraction device, heat and stir the slurry for 12 to 16 minutes, the heating temperature is 40 to 90°C, and the stirring blade speed is 40 to 80 r / min; add hot water to the extraction device, the water temperature is 40 to 90°C, the stirring action does not stop during the water addition process, the stirring method remains unchanged, and the heating conditions remain unchanged; according to the aforementioned heating conditions and stirring method, continue to heat and stir for 5 to 10 minutes, then open the cover of the discharge device, and discharge the crude oil through the discharge port of the extraction device, and the oil discharge time is 5 to 10 minutes; after the crude oil is discharged, the stirring blade rotates to move the residual slag to the discharge port of the extraction device for residue removal, and the slag removal time is 3 to 5 minutes;

[0051] Step 4: subjecting the crude oil to two-stage filtration treatment, including coarse filtration and fine filtration. The coarse filtration is used to separate the large particles of residue dispersed in the crude oil to form fine oil, and the fine filtration is used to separate the oil phase in the fine oil from the tiny solid phase formed by some insoluble carbohydrates to form essential oil for filling and storage.

[0052] Furthermore, the disinfection method in step 1 includes ultraviolet irradiation and / or microwave radiation, which is used to kill bacteria in the raw materials, such as Escherichia coli, Aspergillus flavus, parasitic Aspergillus, etc., which can effectively avoid the production of aflatoxin.

[0053] Preferably, the raw materials are irradiated and disinfected by a tunnel-type ultraviolet disinfection box, and the raw materials are transported by a conveyor belt, and the irradiation time is 3 to 12 minutes.

[0054] Furthermore, the stirring blade operates in an alternating forward and reverse rotation mode, with a forward rotation time of 3 to 10 seconds and a reverse rotation time of 3 to 10 seconds, so as to fully stir the slurry.

[0055] Furthermore, the amount of water added when adding hot water is 10-50% of the weight of the slurry, which is used to displace and precipitate the crude oil in the raw material powder with hot water.

[0056] By adopting the above technical solution, the present invention has the following beneficial effects:

[0057] The intelligent oil extraction machine provided by the present invention has a simple and compact structure, small footprint, low investment cost, and can automatically perform water-oil extraction process on walnut kernels. Based on the intelligent oil extraction machine provided by this solution, this oil extraction process integrates the process of grinding, leaching, separation, filtration, etc., and adopts the method of heating and two-way stirring at the same time, which greatly improves the oil extraction efficiency. Compared with the traditional oil extraction process, this process has a fast oil extraction speed, a high oil extraction rate, and a low production cost. It can keep the nutritional components of walnut oil basically intact, the oil output quality is good, and it is environmentally friendly and pollution-free. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0059] Figure 1 A front view of the intelligent oil extraction machine provided by an embodiment of the present invention;

[0060] Figure 2 A schematic diagram of an automatic feeding device provided in an embodiment of the present invention;

[0061] Figure 3 A left side schematic diagram of the appearance of an extraction tank provided in an embodiment of the present invention;

[0062] Figure 4 A schematic top view of the internal structure of an extraction tank provided in an embodiment of the present invention;

[0063] Figure 5 A right side schematic diagram of an extraction device provided by an embodiment of the present invention;

[0064] Figure 6 A front cross-sectional view of a discharge device provided in an embodiment of the present invention;

[0065] Figure 7 An enlarged illustration of a driving device provided by an embodiment of the present invention;

[0066] Figure 8 A simplified flow chart of the oil extraction process provided in an embodiment of the present invention.

[0067] Reference numerals:

[0068] 1-automatic feeding device; 1a-speed regulating motor; 1b-bevel gear; 1c-vertical conveying dragon; 1d-conical feeding hopper; 2-refining machine; 3-extraction device; 31-electric heating plate; 32a-first spiral blade; 32b-second spiral blade; 33-discharge port; 34-extraction tank; 4-water adding device; 5-cleaning device; 6-oil pumping device; 7-guide rail slider; 8-oil collecting box; 9-slag collecting box; 10-waste water tank; 11-second electric push rod; 12-guide rail; 13-power distribution control system; 131-distribution box; 132-computer display touch screen; 14-driving device; 141-reduction motor; 142-chain; 143-spur gear; 144-sprocket; 15-first electric push rod; 16-discharge device; 161-drainage hood; 162-cover body. DETAILED DESCRIPTION

[0069] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0070] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0071] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] The present invention is further explained below in conjunction with specific implementation modes.

[0073] like Figure 1 As shown, the present embodiment provides an intelligent oil extraction machine, comprising an automatic feeding device 1, a pulping machine 2, an extraction device 3, a water adding device 4, a cleaning device 5, an oil extraction device 6, a guide rail slider 7, an oil collecting box 8, a slag collecting box 9, a waste water tank 10, a second electric push rod 11, a guide rail 12, a power distribution control system 13, a driving device 14, a first electric push rod 15 and a discharge device 16:

[0074] The shell of the intelligent oil extraction machine is made of stainless steel, an extraction device 3 is arranged inside the intelligent oil extraction machine, a refiner 2 is arranged at one end above the extraction device 3, the refiner 2 is equipped with a horizontal motor, the horizontal motor is arranged inside the intelligent oil extraction machine, and is used to drive the refiner 2 to perform refining operation, and the power of the horizontal motor is 3kw; the moving refining disc of the refiner 2 rotates counterclockwise, and three scrapers are evenly distributed on the moving refining disc, and the scrapers are used to scrape the slurry on the inner wall of the refiner 2 to the discharge port at the bottom of the refiner 2; the refining coarseness can be adjusted by rotating the fineness adjustment hand wheel provided on the refiner 2; the production capacity of the refiner 2 can be 30~60kg / h;

[0075] The refiner 2 can be a grinding mill, which belongs to the prior art, and its working principle is briefly described as follows: when the horizontal motor is running, the drive connecting shaft and the grinding disc are running together, and the material to be ground enters the grinding sleeve from the hopper, and the grinding disc dragon and the grinding sleeve move relative to each other to grind the material into small particles, and then enter between the two grinding discs, and the small particles are crushed into fine powder particles through the relative movement of the grinding disc teeth, and the powder particles flow out from the teeth of the grinding disc and are thrown to the inner wall of the grinding mill, and are scraped off by the scraper and flow out from the discharge port;

[0076] The grinding mill can be a grinding mill of model HK-860W, with specific technical parameters as follows: voltage 220V / 380V, power 3kw, rotation speed 1420r / min, fineness 20-200 mesh, production capacity 30-60kg / h, overall dimensions 60×30×45cm, and weight 63kg.

[0077] A water adding device 4 is arranged at one end above the extraction device 3 away from the pulping machine 2, and the water adding device 4 includes a water tank and a water pump: the water tank is provided with an electric heating device for heating the water; the water inlet of the water pump is connected to an external water source, the water outlet of the water pump is connected to the water inlet of the water tank, and the water outlet of the water tank is arranged above the extraction device 3 for injecting water into the extraction device 3.

[0078] The water adding device 4 is used to add hot water to the extraction device 3, thereby realizing the process conditions of oil extraction by the aqueous agent method.

[0079] like Figure 2 As shown, an automatic feeding device 1 is provided at the feed port of the refiner 2, and the automatic feeding device 1 comprises a speed regulating motor 1a, a bevel gear 1b, a vertical conveying dragon 1c and a conical feeding hopper 1d: the vertical conveying dragon 1c is arranged in the conical feeding hopper 1d, and the discharge port of the conical feeding hopper 1d is connected to the feed port of the refiner 2, and the end of the vertical conveying dragon 1c away from the discharge port of the conical feeding hopper is fixedly connected to the bevel gear 1b, and the bevel gear 1b is meshed with the output bevel gear shaft of the speed regulating motor 1a, and the main body of the speed regulating motor 1a is fixed to the top of the intelligent oil extraction machine through a support plate, and the conveying speed of the vertical conveying dragon 1c can be adjusted by the speed regulating motor 1a, thereby adjusting the feed amount.

[0080] A computer display touch screen 132 is provided on the top panel of the intelligent oil extraction machine. The computer display touch screen 132 is connected to the distribution box 131 inside the intelligent oil extraction machine, and together they constitute a power distribution control system 13, which is used to start and close the processing program, set and modify the process parameters. A control button is also provided on the top panel of the intelligent oil extraction machine for turning on and off the power supply.

[0081] The extraction device 3 includes an extraction tank 34 and an electric heating plate 31 . The electric heating plate 31 is made of aluminum and is disposed on the outer wall of the extraction tank 34 to facilitate rapid heating of the extraction tank 34 .

[0082] like Figure 3 As shown, the specific side view shape of the extraction tank 34 is W-shaped, and two groups of spiral blades are arranged side by side at the bottom of the inner cavity of the extraction tank 34. The two cross lines in the figure represent the axes of the spiral blades. The first spiral blade 32a is on the left, and the second spiral blade 32b is on the right. This structure is conducive to fully stirring the slurry.

[0083] like Figure 4As shown, when observing the two sets of spiral blades arranged side by side in the extraction tank 34 from a top view, the rotation direction of the first spiral blade 32a is right-handed, and the rotation direction of the second spiral blade 32b is left-handed. Through the above structure, when the two sets of spiral blades rotate, the slurry will circulate along the rotation direction of the spiral blades and be evenly stirred.

[0084] Of course, the rotation direction and number of spiral blades can also be adjusted according to the actual mixing output and speed requirements.

[0085] like Figure 5 As shown, a discharge port 33 is provided at the right end of the extraction tank 34, for allowing the crude oil, residual slag and clean waste water extracted from the slurry to flow out in stages. The upper part of the electric heating plate 31 is also a W-shaped structure, which wraps the bottom of the extraction tank 34, so that the extraction tank 34 is evenly and fully heated.

[0086] like Figure 6 As shown, a discharge device 16 is provided at one end of the extraction tank 34 where the discharge port 33 is provided, and the discharge device 16 includes a drainage cover 161 and a cover body 162: the drainage cover 161 is fixedly connected to the end of the extraction tank 34, and a drainage port is provided at the bottom of the drainage cover 161; the cover body 162 is arranged inside the drainage cover 161 and movably covers the discharge port 33, and a protrusion is provided at the end of the cover body 162 away from the discharge port 33, and the protrusion passes through the side wall through hole of the drainage cover 161.

[0087] The protruding portion of the cover body 162 is fixedly connected to the output shaft of the first electric push rod 15. When the extraction tank 34 is performing a stirring operation, the cover body 162 abuts against the edge of the discharge port 33 to prevent the slurry from flowing out of the discharge port 33. When the extraction tank 34 is performing an oil discharge operation, the first electric push rod 15 is controlled by program instructions to pull the cover body 162 away from the discharge port 33, and the crude oil flows out of the discharge port 33 and is discharged from the drainage port under the guidance of the drainage cover 161, thereby realizing the oil discharge function.

[0088] like Figure 7As shown, a driving device 14 is arranged below the first electric push rod 15, and the driving device 14 includes: a reduction motor 141, a chain 142, a spur gear 143 and a sprocket 144; the spur gear 143 is keyed to the output shaft of the reduction motor 141, and the body of the reduction motor 141 is fixed to the internal frame of the intelligent oil extraction machine by bolts, and the two sprockets 144 are keyed to the input shafts of the first spiral blade 32a and the second spiral blade 32b respectively, and the input shafts of the first spiral blade 32a and the second spiral blade 32b respectively pass through the through holes arranged on the drainage cover 161, and the spur gear 143 is connected to the two sprockets 144 by the chain 142, so that after the reduction motor 141 is started, the first spiral blade 32a and the second spiral blade 32b can be synchronously driven to rotate by the chain to realize the stirring function, and the rotation speed of the spiral blade can reach 60r / min.

[0089] A distribution box 131 is provided below the driving device 14. The distribution box 131 includes electrical components such as a power supply and a PLC, and is used to store and process program instructions. The distribution box 131 is electrically connected to a computer display touch screen 132 provided on the top of the intelligent oil extraction machine.

[0090] A slag box 9 is provided below the discharge device 16, and the slag box 9 includes a detachable first filter screen and a one-way attached vibrator. The first filter screen is used to filter the crude oil flowing out of the drainage port of the drainage cover 161 during the oil discharge operation; and can collect the slag during the slag discharge operation after the oil discharge. The first filter part is provided at the bottom of the slag box 9, and the filter screens with different filter apertures can be replaced according to the filtering accuracy requirements. The one-way attached vibrator is detachably connected to the frame of the first filter screen, and is used to realize the vibration screening of the slag.

[0091] The lower part of the slag collecting box 9 is detachably connected to an oil collecting box 8 , and the oil collecting box 8 is used to hold the fine oil filtered by the slag collecting box 9 .

[0092] A guide rail 12 is provided below the oil collecting box 8, the bottom of the oil collecting box 8 is fixed to one end of the guide rail slider 7, and a waste water tank 10 is provided at the other end of the guide rail slider 7. The waste water tank 10 is used to hold the waste water after the extraction device 3 and the discharge device 16 are flushed with water during the cleaning operation, and the waste water is also discharged from the drainage port of the drainage cover 161.

[0093] A second electric push rod 11 is provided at one end of the guide rail slider 7 that fixes the wastewater tank 10, the output shaft of the second electric push rod 11 is connected to the guide rail slider 7, the body of the second electric push rod 11 is fixed on the internal frame of the intelligent oil extraction machine, and the second electric push rod 11 is used to drive the guide rail slider 7 to move axially along the guide rail 12, so that the oil collecting tank 8 or the wastewater tank 10 reaches below the drainage port of the drainage cover 161 respectively.

[0094] Through the above structure, the oil collecting box 8, the slag collecting box 9 and the waste water tank 10 can quickly and automatically reach the receiving station under the drainage hood 161 when they are in the three working conditions of oil discharge, slag discharge and clean drainage.

[0095] The intelligent oil extraction machine is also provided with a cleaning device 5 on the inner wall near the extraction device 3, and the cleaning device 5 comprises a water gun and a cleaning water pump: the water inlet of the cleaning water pump is connected to an external water source, and the water outlet of the cleaning water pump is connected to the water gun.

[0096] The cleaning device 5 is convenient for people to flush and clean the automatic feeding device 1, the pulping machine 2, the extraction device 3 and the discharge device 16 with a handheld water gun.

[0097] An oil pumping device 6 is arranged above the cleaning device 5, and the oil pumping device 6 includes a second filter and an oil pump: the oil inlet of the oil pump is connected to the oil collecting tank 8, and the oil outlet of the oil pump is connected to the external oil pipeline. The second filter is detachably arranged in the oil pump, and is used to filter the fine oil extracted from the oil collecting tank 8 into essential oil, and then fill and store it externally.

[0098] Of course, the second filter screen can also be made of other well-known methods such as filter cotton to achieve the same technical effect.

[0099] On the other hand, Figure 8 As shown, this embodiment also provides an oil extraction process using the above-mentioned intelligent oil extraction machine, and the specific steps are as follows:

[0100] Step 1, manual cleaning and weighing: Clean the raw materials, remove walnut shells, moldy kernels and other impurities in the walnut kernels, irradiate and disinfect the raw materials through a tunnel-type ultraviolet disinfection box, the irradiation time range is 3~12min, and then weigh the raw materials according to the production capacity of the intelligent oil extraction machine;

[0101] Step 2, automatic refining: turn on the refiner 2 and the automatic feeding device 1, add the weighed raw materials to the feed port in batches, and after the refining is completed, turn off the refiner 2 and the automatic feeding device 1, open the movable cover of the refiner 2, and manually clean the pulp residue in the refiner 2;

[0102] Step 3: Automatic oil extraction based on water-based method, specifically including:

[0103] Step 31, after the slurry automatically enters the extraction device 3, the electric heating plate 31 and the two sets of spiral blades are turned on to heat and stir the slurry in the extraction tank 34 for 12-16 minutes, the heating temperature is controlled in the range of 70-80°C, the two sets of spiral blades are stirred alternately in forward and reverse rotation, the forward rotation time is 4s, the reverse rotation time is 5s, and the rotation speed of the two sets of spiral blades is 60r / min;

[0104] Step 32, add hot water to the extraction tank 34, the amount of water added is 20-38% of the weight of the slurry, the water temperature is controlled in the range of 70-80°C, the stirring action does not stop during the water addition process, the stirring method remains unchanged, and the heating conditions remain unchanged;

[0105] Step 33, continue stirring and heating for 5 minutes according to the aforementioned stirring method and heating conditions;

[0106] Step 34, the discharge device 4 automatically opens the cover 162 to discharge the crude oil, and the crude oil discharge time is 5 to 10 minutes until the crude oil is completely discharged;

[0107] Step 35: The two sets of spiral blades rotate to move the residual slag to the discharge port 33 of the extraction tank 34 for slag removal. The slag removal time is 3 to 5 minutes until the slag is completely discharged.

[0108] Step 4, automatic filtration and packaging: the crude oil is subjected to coarse filtration treatment and fine filtration treatment in sequence, the coarse filtration treatment is used to separate the large particles of residue dispersed in the crude oil to form fine oil, and the fine filtration treatment is used to separate the oil phase in the fine oil from the tiny solid phase formed by some insoluble carbohydrates to form essential oil, and then the essential oil is filled and stored.

[0109] By using the method of the above embodiment, walnut oil can be extracted from walnut raw materials quickly and efficiently, and the oil yield is as high as 55.2-56.8%, which is very close to the 60% crude fat content in walnuts, greatly avoiding the waste of walnut fat.

[0110] The specific implementation process and effect description of this embodiment:

[0111] Implementation process:

[0112] A walnut variety mainly grown in Yunnan was selected, and the residual shells and moldy kernels in the shelled walnut kernels were manually removed to control the moisture content of the walnut kernels to be maintained at about 4% to 9%. According to the capacity of the intelligent oil extraction machine, 10 kg of shelled walnut kernels were weighed;

[0113] Turn on the refiner 2 and the automatic feeding device 1, add the weighed shelled walnut kernels into the conical feeding hopper 1d feeding port of the automatic feeding device 1 in batches, and start refining after the shelled walnut kernels enter the refiner 2;

[0114] After the refining is completed, the automatic feeding device 1 and the refiner 2 are turned off, the movable cover of the refiner 2 is opened, and the slurry in the inner cavity of the refiner 2 is cleaned. After the cleaning is completed, the movable cover is covered;

[0115] Turn on the start button on the panel of the intelligent oil extraction machine, click the "confirm" button displayed on the computer display touch screen 132, and then click the "start" button displayed on the computer display touch screen 132, and the intelligent oil extraction machine starts to operate according to the "automatic mode";

[0116] After the "automatic mode" is finished, the crude oil released from the extraction tank 34 is automatically subjected to coarse filtration and fine filtration to obtain the refined oil which is extracted by the oil pump for filling and storage.

[0117] Implementation effect:

[0118] The comparison of the oil extraction efficiency and oil extraction quality between the method of the embodiment of the present invention and the conventional hydraulic oil extraction method and screw pressing oil extraction method is shown in the following table:

[0119]

[0120] The comparison of the functional components of oil and fat between the method of the embodiment of the present invention and the conventional hydraulic oil extraction method and screw pressing oil extraction method is shown in the following table:

[0121]

[0122] By comparing the above two tables, it can be found that the quality of the refined oil in the embodiment of the present invention is better and the appearance is better; it saves time and labor, and the oil extraction efficiency is higher. Compared with the conventional oil extraction process, the processing time can be shortened to 1 / 6 to 1 / 4 of the conventional working hours, and the obtained oil can be directly filled without static clarification treatment; the content of functional components in the oil is significantly improved, especially the improvement of antioxidant components (tocopherol content), which is conducive to extending the storage period, thereby solving the problem of walnut oil being easily oxidized and corrupted. In addition, the residues such as oil cakes obtained in the embodiment of the present invention are clean and free of chemical pollution, and can be directly added to other auxiliary materials to prepare various high-protein foods, which improves the utilization rate of walnuts and reduces the waste of raw materials while basically not losing nutritional value.

[0123] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A walnut kernel oil extraction process, characterized in that: The method comprises the following steps: washing the raw materials, removing impurities, disinfecting and weighing the raw materials; putting the raw materials into a pulping machine to grind the slurry; after the slurry enters the extraction device, heating and stirring the slurry for 12 to 16 minutes, the heating temperature is 70 to 80°C, and the stirring blade speed is 40 to 80 r / min; Add hot water to the extraction device at a temperature of 70-80°C; the amount of hot water added is 20-38% of the slurry weight; According to the aforementioned heating conditions and stirring method, continue heating and stirring for 5 to 10 minutes and then discharge the crude oil; filter the crude oil into essential oil and then fill it.

2. The oil extraction process according to claim 1, characterized in that: The sterilization method includes ultraviolet radiation and / or microwave radiation to kill bacteria in the raw materials.

3. The oil extraction process according to claim 2, characterized in that: During ultraviolet irradiation, the raw materials are irradiated through a tunnel-type ultraviolet disinfection box, and the irradiation time is 3 to 12 minutes.

4. The oil extraction process according to claim 1, characterized in that: The invention comprises an intelligent oil extraction machine, which comprises a pulping machine and an extraction device: the pulping machine is used to grind the raw material into slurry; the extraction device is arranged at the outlet of the pulping machine, and is used to extract oil from the slurry based on the water-based method; The extraction device is provided with a spiral blade for stirring the slurry; The spiral blade comprises a left-handed spiral blade and a right-handed spiral blade, and the left-handed spiral blade and the right-handed spiral blade are arranged side by side in the extraction device; The extraction device also includes an electric heating plate; The invention also comprises a water adding device for adding hot water into the extraction device.

5. The oil extraction process according to claim 4, characterized in that: It also includes an automatic feeding device, which is arranged at the feed port of the refiner and includes a motor, a conveying dragon and a feeding hopper; the conveying dragon is arranged in the feeding hopper and connects the feed port and the discharge port of the feeding hopper; the discharge port of the feeding hopper is connected to the feed port of the refiner, and the end of the conveying dragon away from the discharge port of the feeding hopper is connected to the motor.

6. The oil extraction process according to claim 4, characterized in that: The water adding device includes a water tank and a water pump; the water tank is provided with an electric heating device for heating the water; the water inlet of the water pump is connected to an external water source, the water outlet of the water pump is connected to the water inlet of the water tank, and the water outlet of the water tank is arranged above the extraction device.

7. The oil extraction process according to claim 4, characterized in that: The stirring blades are operated in a forward and reverse alternating manner, with a forward rotation time of 3 to 10 seconds and a reverse rotation time of 3 to 10 seconds.

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