CN111363615A - Production method of walnut oil - Google Patents
Production method of walnut oil Download PDFInfo
- Publication number
- CN111363615A CN111363615A CN202010201323.2A CN202010201323A CN111363615A CN 111363615 A CN111363615 A CN 111363615A CN 202010201323 A CN202010201323 A CN 202010201323A CN 111363615 A CN111363615 A CN 111363615A
- Authority
- CN
- China
- Prior art keywords
- oil
- temperature
- walnut
- pressing
- medium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B1/00—Production of fats or fatty oils from raw materials
- C11B1/02—Pretreatment
- C11B1/04—Pretreatment of vegetable raw material
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B1/00—Production of fats or fatty oils from raw materials
- C11B1/06—Production of fats or fatty oils from raw materials by pressing
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/001—Refining fats or fatty oils by a combination of two or more of the means hereafter
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/008—Refining fats or fatty oils by filtration, e.g. including ultra filtration, dialysis
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/02—Refining fats or fatty oils by chemical reaction
- C11B3/06—Refining fats or fatty oils by chemical reaction with bases
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/10—Refining fats or fatty oils by adsorption
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/12—Refining fats or fatty oils by distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- General Chemical & Material Sciences (AREA)
- Fats And Perfumes (AREA)
- Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
Abstract
The invention provides a production method of walnut oil, which comprises the steps of walnut peeling, cleaning, drying, walnut shell breaking, low-temperature cold pressing, filtering, refining dewaxing, filling and cover sealing, particularly, the low-temperature cold pressing refers to that an oil pressing screw is driven by a driving motor to perform spiral motion, walnut kernels are pressed to discharge oil through spiral blades with sequentially reduced screw pitches, meanwhile, the temperature in an oil pressing cavity is detected through a temperature sensor, the temperature in the oil pressing cavity is compared with a preset temperature threshold value in a PLC (programmable logic controller), a PLC (programmable logic controller) controls a cooling device to be started when the detected temperature is higher than the preset temperature threshold value, a cooling medium is input into the oil pressing screw through the cooling device to realize rapid reduction of the internal temperature of the oil pressing cavity, the refining dewaxing sequence comprises the steps of degumming, alkali refining, water washing, decoloring and deodorization, so that the prepared walnut oil is clear, yellow and bright, the peroxide value of the finished oil is low, and, the quality of the finished oil is stable, and the retention time in the decoloring pot is short, so that the color of the finished oil is good.
Description
Technical Field
The invention relates to the technical field of walnut processing, in particular to a production method of walnut oil.
Background
The grease content of the walnut reaches 65-70 percent, and the walnut oil belongs to all woody oil and is reputed as oil depots on trees. The essence is extracted by the modern process, and the product is walnut oil of a new generation of walnuts. The walnut oil is natural fruit oil juice which is prepared by selecting high-quality walnuts as raw materials and adopting an internationally advanced squeezing process, and belongs to edible oil. In the international market, the walnut oil is known as the oriental olive oil and is like the olive oil, so that the walnut oil is highly favored by consumers. The walnut oil not only has the functions of building the body, but also has the functions of moistening the skin, maintaining beauty and keeping young, beautifying and protecting the hair, strengthening the brain, nourishing the brain and the like, and is high-grade edible cooking oil which is ideal in daily life of people. The inventor of the present invention finds, through research, that the product is easy to revert to color and acid due to the production processes such as refining and dewaxing, etc., which results in poor color and unstable quality of the product oil, and needs to solve the problem.
Disclosure of Invention
The invention provides a novel production method of walnut oil, aiming at the technical problems that the color of the finished product oil is poor and the quality of the finished product oil is unstable due to the fact that the finished product oil is easy to turn color and acid due to the production processes of refining, dewaxing and the like of the existing walnut oil.
In order to solve the technical problems, the invention adopts the following technical scheme:
a walnut oil production method comprises the steps of walnut peeling, cleaning, drying, walnut shell breaking, low-temperature cold pressing, filtering, refining dewaxing and filling and sealing, in particular, a low-temperature oil pressing device is adopted in the low-temperature cold pressing step and comprises a charging hopper, an oil pressing barrel is fixedly connected to the bottom of the charging hopper, an oil pressing screw is arranged in an oil pressing cavity of the oil pressing barrel, two ends of the oil pressing screw are rotatably arranged on the oil pressing barrel, one end of the oil pressing screw extends out of the oil pressing barrel and is connected with a driving motor through a transmission mechanism, the other end of the oil pressing screw extends out of the oil pressing barrel and is connected with an end cover plate hinged on the oil pressing barrel and tightly end-sealed, a discharge hole is formed in the end part of the oil pressing barrel close to one side of the end cover plate, a spiral blade is arranged on the oil pressing screw, the pitch of the spiral blade is sequentially reduced from one end of the oil pressing screw to the other end of the oil pressing screw, the inside medium inflow channel and the medium outflow channel of being equipped with of screw rod extracts oil, the entry of medium inflow channel and the export of medium outflow channel are located the one end of the screw rod extracts oil, the export of medium inflow channel and the entry of medium outflow channel link up inside the screw rod extracts oil, the entry of medium inflow channel passes through the pipeline and is connected with external cooling device, the export and the medium pipe connection of medium outflow channel, be equipped with temperature sensor on the intracavity wall of the chamber that extracts oil of the barrel, temperature sensor and cooling device all are connected with the PLC controller electricity, the bottom of the barrel that extracts oil is equipped with the oil hole, the oil hole below is equipped with the collection hopper of being connected with the barrel that extracts oil, the bottom of collection hopper is equipped with the oil-out port, low temperature cold pressing is through the loading hopper get into the barrel that extracts oil, along helical blade's helical direction motion under driving motor driven the screw rod that extracts oil, the screw pitches of the helical blades are sequentially reduced to enable the walnut kernels to be pressed to produce oil, the oil is detected through the temperature sensor and then is transmitted into the PLC controller, the temperature is compared with a preset temperature threshold value in the PLC controller, the PLC controller controls the cooling device to start when the temperature is higher than the preset temperature threshold value, and cooling media are input into the oil pressing screw through the medium inflow channel and the medium outflow channel to reduce the temperature in the oil pressing cavity; the refining and dewaxing comprises degumming and alkali refining, water washing, decoloring and deodorizing, wherein the degumming and alkali refining refers to heating filtered crude oil to 58-60 ℃, then adding alkali liquor while stirring for 5-10 minutes under the condition of 60 revolutions per minute, then observing the separation condition of soap grains after reaction, slowly heating up at the speed of increasing 1 ℃ per minute when the oil soap begins to be separated, and changing into low-speed stirring at 20-25 revolutions per minute, when the oil temperature reaches 65 ℃, obviously separating the oil soap, stopping stirring, and starting to stand to settle the saponin; the water washing refers to discharging the saponin, continuously heating the grease to 75 ℃, then adding hot water with the water weight being more than 5% of the oil weight and the water temperature being more than 5-10 ℃ of the oil temperature, stirring and washing, continuing to stir for 5 minutes after the hot water is added, then discharging the soap water after standing and precipitating for 4 hours, and repeatedly performing the water washing step for 1-2 times; the decolorization is characterized in that firstly, alkali refined oil after washing is sucked into a decolorization pot, the temperature is raised to 100 ℃ while stirring in a vacuum state with the vacuum degree of 700mmHg, then the mixture is stirred for 10 minutes to reduce the water content to be less than 0.1 percent, then a carclazyte decolorizer which is 2 to 4 percent of the weight of the sucked oil is stirred for 20 minutes, then the vacuum is broken after the temperature is reduced to 90 ℃, a decolorization pump is started to an oil filter for carclazyte oil separation, and decolorized oil is obtained; the deodorization is that the decolored oil is sucked into a deodorization pot through a vacuum pump, when the vacuum degree reaches 755mmHg and the temperature is raised to more than 150 ℃, direct steam is opened to enable the oil to turn up and down to start distillation and deodorization timing, simultaneously, the oil temperature is quickly raised to 220 ℃, after the deodorization time reaches 4 hours, the conduction oil is continuously closed in a vacuum state, a cooling water valve is opened, after the oil temperature is lowered to 150 ℃, the vacuum pump valve and the direct steam valve are closed, and after the temperature is continuously lowered to 80 ℃, the finished oil is obtained through natural cooling.
Compared with the prior art, the walnut oil production method provided by the invention has the advantages that in the low-temperature cold pressing step, the driving motor drives the oil pressing screw to perform spiral motion, the walnut kernels are pressed to produce oil through the spiral blades with the pitches sequentially reduced, meanwhile, the temperature in the oil pressing cavity is detected through the temperature sensor, the temperature is compared with the preset temperature threshold value in the PLC, the PLC controls the cooling device to start when the detected temperature is higher than the preset temperature threshold value, the cooling medium is input into the oil pressing screw through the medium inflow channel and the medium outflow channel through the cooling device, so that the internal temperature of the oil pressing cavity can be quickly and effectively reduced, the internal temperature of the oil pressing cavity is basically kept near the preset temperature threshold value, and the situation that the oil quality is influenced due to the overhigh internal temperature of the oil pressing cavity can be prevented; in the refining and dewaxing step, firstly, degumming and alkali refining are carried out through an alkali method operation, then, soap alkali is further washed through a water washing process to enable oil quality to be clear, then, the color of oil is enabled to be clear and yellow and bright through a decoloring process, and finally, the oil is enabled to be cleaner through a deodorization process.
Further, a walnut shell breaking device is adopted in the walnut shell breaking step and comprises a support frame, a support table is fixed on the support frame, a limit groove is formed in the support table, a push cylinder fixed on the support table is arranged at one end of the limit groove, a piston rod of the push cylinder is fixedly connected with a push barrier strip arranged in the limit groove, a discharge hopper and a support plate which are supported on the support table are sequentially arranged at the side edge of the limit groove, a passageway allowing a single walnut to fall is formed in the bottom of the discharge hopper, an outlet of the passageway is located right above the limit groove, the lower end of the outlet is slightly higher than the upper surface of the push barrier strip, the distance between the lower end of the outlet and the bottom of the limit groove is equal to the distance between the lower end of the push barrier strip and the bottom of the limit groove, a servo cylinder is fixedly installed on the support plate, and a pressing block is fixedly connected, the other end of the limiting groove is provided with a material collecting slope hopper obliquely connected with the supporting table, the pushing cylinder and the servo cylinder are electrically connected with the PLC, the walnut cracking is a single walnut which enters the passageway through the discharging hopper and falls into the limiting groove, the walnut cracking is firstly pushed to the lower part of the pressing block along the limiting groove under the pushing of the pushing barrier strip driven by the pushing cylinder, then the pressing block is driven by the servo cylinder to move downwards to be in surface contact with the walnut shell, and then the servo cylinder continues to press downwards until the walnut shell is cracked.
Further, the front surface of the pushing barrier strip and the lower surface of the pressing block are arc surfaces.
Further, drive mechanism is drive chain, drive chain meshes with driving motor's motor shaft and the gear that predetermines on one end of the screw rod that extracts oil respectively mutually.
Further, helical blade order includes pre-compaction helical blade, middling pressure helical blade and high-pressure helical blade, the pitch of pre-compaction helical blade, middling pressure helical blade and high-pressure helical blade is than 2: 1.5: 1.
further, the cooling device is a cooling fan or a cooling water pump.
Drawings
FIG. 1 is a schematic flow chart of a production method of walnut oil provided by the present invention.
Fig. 2 is a schematic structural diagram of a low-temperature oil pressing device adopted in the low-temperature cold pressing step provided by the invention.
Fig. 3 is a process flow diagram of a refining dewaxing step in the walnut oil production method provided by the invention.
Fig. 4 is a schematic structural diagram of a walnut shell breaking device adopted in the walnut shell breaking step provided by the invention.
In the figure, 100, a loading hopper; 101. an oil pressing cylinder body; 102. an oil-pressing screw; 103. a transmission mechanism; 104. a drive motor; 105. an end cover plate; 106. a helical blade; 107. a cooling device; 108. a temperature sensor; 109. an oil filter hole; 110. an oil collecting hopper; 111. an oil outlet; 200. a support frame; 201. a support table; 202. a limiting groove; 203. a push cylinder; 204. pushing the barrier strip; 205. a discharge hopper; 206. a support plate; 207. an aisle; 208. a servo cylinder; 209. a pressing block; 210. a material collecting slope hopper.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 3, the present invention provides a method for producing walnut oil, which sequentially includes the steps of walnut peeling, cleaning, drying, walnut shell breaking, low-temperature cold pressing, filtering, refining dewaxing, and filling and capping, and particularly, a low-temperature oil pressing device is adopted in the low-temperature cold pressing step, the low-temperature oil pressing device includes a hopper 100, an oil pressing cylinder 101 is fixedly connected to the bottom of the hopper 100, an oil pressing screw 102 is disposed in a cavity of the oil pressing cylinder 101, two ends of the oil pressing screw 102 are rotatably disposed on the oil pressing cylinder 101, that is, the oil pressing screw 102 is rotatably erected on the oil pressing cylinder 101, one end of the oil pressing screw 102 extends out of the oil pressing cylinder 101 and is connected to a driving motor 104 through a transmission mechanism 103, and the other end of the oil pressing screw 102 extends out of the oil pressing cylinder 101 and is connected to an end cover plate 105 hinged to the oil pressing cylinder 101, the end part of the oil pressing cylinder 101 close to one side of the end cover plate 105 is provided with a discharge hole, so that when walnut materials after pressing are removed, the end cover plate 105 can be opened to be removed from the discharge hole, the oil pressing screw 102 is provided with a spiral blade 106, the pitch of the spiral blade 106 is sequentially reduced from one end of the oil pressing screw to the other end of the oil pressing screw, a medium inflow channel and a medium outflow channel are arranged inside the oil pressing screw 102, the inlet of the medium inflow channel and the outlet of the medium outflow channel are positioned at one end of the oil pressing screw 102, namely, the inlet of the medium inflow channel and the outlet of the medium outflow channel are positioned outside the oil pressing cylinder 101, the outlet of the medium inflow channel and the inlet of the medium outflow channel are communicated inside the oil pressing screw 102, the inlet of the medium inflow channel is connected with an external cooling device 107 through a pipeline, and the outlet of the medium outflow channel is connected with, in order to recycle the medium flowing out, bearings are sleeved in the inlet of the medium inflow channel and the outlet of the medium outflow channel to be rotatably connected with the pipeline and the medium conduit, so as to prevent the oil pressing screw 102 from causing self-phase winding of the pipeline and the medium conduit during rotation, a temperature sensor 108 is arranged on the inner wall of the oil pressing cavity of the oil pressing cylinder 101, the temperature sensor 108 and the cooling device 107 are electrically connected with a PLC controller (not shown) so as to control the cooling device 107 to start when the PLC controller compares that the temperature in the oil pressing cavity detected by the temperature sensor 108 is greater than a preset temperature threshold value, the PLC controller can be implemented by using an existing FX2n series PLC, the temperature sensor 108 can be implemented by using an existing thermal resistance temperature sensor, and the specific structure and working principle of the PLC controller and the temperature sensor are well known to those skilled in the art, no further description is given here, the bottom of the oil pressing cylinder 101 is provided with an oil filtering hole 109, an oil collecting hopper 110 connected with the oil pressing cylinder 101 is arranged below the oil filtering hole 109, the bottom of the oil collecting hopper 110 is provided with an oil outlet 111, the low-temperature cold pressing refers to the walnut kernels entering the oil pressing cylinder 101 through the feeding hopper 100, driven by the oil-pressing screw 102 driven by the driving motor 104 to move along the spiral direction of the spiral blade 106, the pitch of the spiral blade 106 is sequentially reduced to press the walnut kernels to discharge oil, the temperature in the oil pressing cavity is detected by the temperature sensor 108 and then is transmitted into the PLC controller, comparing the temperature with a preset temperature threshold value in the PLC, controlling the cooling device 107 to start when the temperature is greater than the preset temperature threshold value by the PLC, and inputting a cooling medium into the oil pressing screw 102 through the medium inflow channel and the medium outflow channel so as to quickly and effectively reduce the internal temperature of the oil pressing cavity; the refining and dewaxing comprises degumming and alkali refining, water washing, decoloring and deodorizing, wherein the degumming and alkali refining refers to heating filtered crude oil to 58-60 ℃, then adding alkali liquor while stirring for 5-10 minutes under the condition of 60 revolutions per minute, then observing the separation condition of soap grains after reaction, slowly heating up at the speed of increasing 1 ℃ per minute when the oil soap begins to be separated, and changing into low-speed stirring at 20-25 revolutions per minute, when the oil temperature reaches 65 ℃, obviously separating the oil soap, stopping stirring, and starting to stand to settle the saponin; the water washing refers to discharging the saponin, continuously heating the grease to 75 ℃, then adding hot water with the water weight being more than 5% of the oil weight and the water temperature being more than 5-10 ℃ of the oil temperature, stirring and washing, continuing to stir for 5 minutes after the hot water is added, then discharging the soap water after standing and precipitating for 4 hours, and repeatedly performing the water washing step for 1-2 times; the decolorization is characterized in that firstly, alkali refined oil after washing is sucked into a decolorization pot, the temperature is raised to 100 ℃ while stirring in a vacuum state with the vacuum degree of 700mmHg, then the mixture is stirred for 10 minutes to reduce the water content to be less than 0.1 percent, then a carclazyte decolorizer which is 2 to 4 percent of the weight of the sucked oil is stirred for 20 minutes, then the vacuum is broken after the temperature is reduced to 90 ℃, a decolorization pump is started to an oil filter for carclazyte oil separation, and decolorized oil is obtained; the deodorization is that the decolored oil is sucked into a deodorization pot through a vacuum pump, when the vacuum degree reaches 755mmHg and the temperature is raised to more than 150 ℃, direct steam is opened to enable the oil to turn up and down to start distillation and deodorization timing, simultaneously, the oil temperature is quickly raised to 220 ℃, after the deodorization time reaches 4 hours, the conduction oil is continuously closed in a vacuum state, a cooling water valve is opened, after the oil temperature is lowered to 150 ℃, the vacuum pump valve and the direct steam valve are closed, and after the temperature is continuously lowered to 80 ℃, the finished oil is obtained through natural cooling.
Compared with the prior art, the walnut oil production method provided by the invention has the advantages that in the low-temperature cold pressing step, the driving motor drives the oil pressing screw to perform spiral motion, the walnut kernels are pressed to produce oil through the spiral blades with the pitches sequentially reduced, meanwhile, the temperature in the oil pressing cavity is detected through the temperature sensor, the temperature is compared with the preset temperature threshold value in the PLC, the PLC controls the cooling device to start when the detected temperature is higher than the preset temperature threshold value, the cooling medium is input into the oil pressing screw through the medium inflow channel and the medium outflow channel through the cooling device, so that the internal temperature of the oil pressing cavity can be quickly and effectively reduced, the internal temperature of the oil pressing cavity is basically kept near the preset temperature threshold value, and the situation that the oil quality is influenced due to the overhigh internal temperature of the oil pressing cavity can be prevented; in the refining and dewaxing step, firstly, degumming and alkali refining are carried out through an alkali method operation, then, soap alkali is further washed through a water washing process to enable oil quality to be clear, then, the color of oil is enabled to be clear and yellow and bright through a decoloring process, and finally, the oil is enabled to be cleaner through a deodorization process.
As a specific embodiment, referring to fig. 4, a walnut shell breaking device is adopted in the walnut shell breaking step, the walnut shell breaking device includes a support frame 200, a support table 201 is fixed on the support frame 200, a limit groove 202 is formed on the support table 201, a push cylinder 203 fixed on the support table 201 is arranged at one end of the limit groove 202, a push barrier 204 arranged in the limit groove 202 is fixedly connected to a piston rod of the push cylinder 203, a discharge hopper 205 and a support plate 206 supported on the support table 201 are sequentially arranged at a side edge of the limit groove 202, specifically, the support plate 206 is arranged at a downstream side of the discharge hopper 205, a passageway 207 allowing a single walnut to fall is formed at the bottom of the discharge hopper 205, an outlet of the passageway 207 is located right above the limit groove 202, a lower end of the outlet is slightly higher than an upper surface of the push barrier 204, and a distance from a bottom of the limit groove 202 is allowed for a single walnut to pass through, therefore, when a single walnut falls down from the passageway 207, the single walnut just falls into the limiting groove 202, then the pushing barrier 204 is driven by the pushing cylinder 203 to push the falling single walnut away along the limiting groove 202, the next walnut just falls onto the upper surface of the pushing barrier 204 and is limited in the passageway 207, the pushing barrier 204 retracts under the driving of the pushing cylinder 203 after the previous walnut is broken, the next walnut just falls into the limiting groove 202 after the pushing barrier 204 retracts to the initial position, complete shell breaking can be realized on each walnut through the cyclic reciprocation in such a way, the servo cylinder 208 is fixedly installed on the supporting plate 206, the piston rod of the servo cylinder 208 is fixedly connected with the pressing block 209, therefore, the pressing block 209 can move up and down right above the limiting groove 202 under the driving of the servo cylinder 208, the other end of the limiting groove 202 is provided with the aggregate slope 210 obliquely connected with the supporting table 201, therefore, the pushing air cylinder 203 can drive the pushing barrier strip 204 to further move forwards, the broken walnuts are pushed out of the limiting groove 202 to slide into the aggregate slope hopper 210, then the walnuts in the aggregate slope hopper 210 are screened to select the walnut kernels, the pushing cylinder 203 and the servo cylinder 208 are both electrically connected to a PLC controller, and the specific installation position of the PLC controller (such as the installation position on the support table 201) is not limited, the walnut shell breaking is that a single walnut entering the passageway 207 through the discharge hopper 205 and falling to the limit groove 202 is firstly pushed by the pushing barrier 204 driven by the pushing cylinder 203 to be pushed to the lower part of the pressing block 209 along the limit groove 202, then the pressing block 209 is driven by the servo cylinder 208 to move downwards to contact the surface of the walnut shell, and then the servo cylinder 208 continues to press downwards until the walnut shell is broken.
As a specific embodiment, the front surface of the pushing barrier 204 and the lower surface of the pressing block 209 are arc-shaped surfaces, so that the pushing pressing can be realized by better contact with the walnut surface.
As a specific embodiment, the transmission mechanism 103 is a transmission chain, and the transmission chain is respectively engaged with a motor shaft of the driving motor 104 and a gear preset at one end of the oil pressing screw 102, so that when the driving motor 104 is started, the oil pressing screw 102 can be driven to rotate by the motor shaft through the transmission chain. Of course, those skilled in the art can also adopt other transmission mechanisms such as a transmission belt to realize transmission connection based on the aforementioned transmission chain.
As a specific embodiment, the helical blade 106 sequentially includes a pre-pressing helical blade, a medium-pressure helical blade, and a high-pressure helical blade, and the pitch ratio of the pre-pressing helical blade, the medium-pressure helical blade, and the high-pressure helical blade is 2: 1.5: 1, the pre-pressing helical blade, the medium-pressure helical blade and the high-pressure helical blade with the pitch ratio can gradually compress the walnut kernels, so that higher oil output and oil output quality are obtained.
As a specific embodiment, the cooling device 107 is a cooling fan or a cooling water pump, and specifically, when the cooling device 107 is a cooling fan, the cooling medium input into the oil pressing screw 102 is air-cooled, that is, the inside of the oil pressing cavity is cooled by cold air; when the cooling device 107 is a cooling water pump, the cooling medium input into the oil pressing screw 102 is water-cooled, that is, the temperature inside the oil pressing cavity is reduced by cold water; the cooling medium flowing out through the medium outflow channel can flow back to the cooling fan or the cooling water pump through the medium guide pipe to be recycled, so that the energy consumption required by refrigeration is reduced.
In addition, as will be understood and appreciated by those skilled in the art, the walnut shelling, washing, drying, filtering, filling and capping steps not described in the walnut oil production method provided by the present application are well known to those skilled in the art, i.e., those skilled in the art can fully utilize the prior art to implement the steps, and thus, will not be described in detail herein.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (6)
1. A production method of walnut oil comprises the steps of walnut peeling, cleaning, drying, walnut shell breaking, low-temperature cold pressing, filtering, refining dewaxing and filling and capping in sequence, and is characterized in that a low-temperature oil pressing device is adopted in the low-temperature cold pressing step and comprises a feeding hopper, an oil pressing barrel is fixedly connected to the bottom of the feeding hopper, an oil pressing screw is arranged in an oil pressing cavity of the oil pressing barrel, two ends of the oil pressing screw are rotatably arranged on the oil pressing barrel, one end of the oil pressing screw extends out of the oil pressing barrel and is connected with a driving motor through a transmission mechanism, the other end of the oil pressing screw extends out of the oil pressing barrel and is connected with an end cover plate hinged to the oil pressing barrel and tightly sealed, a discharge hole is formed in the end part of the oil pressing barrel close to one side of the end cover plate, and a spiral blade is arranged on the oil pressing screw, the screw pitch of helical blade reduces from the screw rod one end that extracts oil to the screw rod other end in proper order, the inside medium inflow passageway and the medium outflow passageway of being equipped with of screw rod that extracts oil, the entry of medium inflow passageway and the export of medium outflow passageway are located the one end of the screw rod that extracts oil, the export of medium inflow passageway and the entry of medium outflow passageway link up inside the screw rod that extracts oil, the entry of medium inflow passageway passes through the pipeline and is connected with external cooling device, the export and the medium pipe connection of medium outflow passageway, be equipped with temperature sensor on the intracavity wall that extracts oil of the barrel, temperature sensor and cooling device all are connected with the PLC controller electricity, the bottom of the barrel that extracts oil is equipped with the oil filtering hole, the oil collecting hopper that is equipped with and extracts oil the barrel and is connected is equipped with the oil-out to oil hole below, the bottom of oil collecting hopper is equipped with the oil-out, low temperature cold pressing is through, the oil pressing device moves along the spiral direction of the spiral blade under the driving of an oil pressing screw rod driven by a driving motor, the pitch of the spiral blade is sequentially reduced to enable walnut kernels to be pressed to produce oil, the temperature in an oil pressing cavity is detected through a temperature sensor and then is transmitted into a PLC (programmable logic controller), the PLC is compared with a preset temperature threshold value, the PLC controls a cooling device to start when the temperature is higher than the preset temperature threshold value, and a cooling medium is input into the oil pressing screw rod through a medium inflow channel and a medium outflow channel to reduce the internal temperature of the oil pressing cavity; the refining and dewaxing comprises degumming and alkali refining, water washing, decoloring and deodorizing, wherein the degumming and alkali refining refers to heating filtered crude oil to 58-60 ℃, then adding alkali liquor while stirring for 5-10 minutes under the condition of 60 revolutions per minute, then observing the separation condition of soap grains after reaction, slowly heating up at the speed of increasing 1 ℃ per minute when the oil soap begins to be separated, and changing into low-speed stirring at 20-25 revolutions per minute, when the oil temperature reaches 65 ℃, obviously separating the oil soap, stopping stirring, and starting to stand to settle the saponin; the water washing refers to discharging the saponin, continuously heating the grease to 75 ℃, then adding hot water with the water weight being more than 5% of the oil weight and the water temperature being more than 5-10 ℃ of the oil temperature, stirring and washing, continuing to stir for 5 minutes after the hot water is added, then discharging the soap water after standing and precipitating for 4 hours, and repeatedly performing the water washing step for 1-2 times; the decolorization is characterized in that firstly, alkali refined oil after washing is sucked into a decolorization pot, the temperature is raised to 100 ℃ while stirring in a vacuum state with the vacuum degree of 700mmHg, then the mixture is stirred for 10 minutes to reduce the water content to be less than 0.1 percent, then a carclazyte decolorizer which is 2 to 4 percent of the weight of the sucked oil is stirred for 20 minutes, then the vacuum is broken after the temperature is reduced to 90 ℃, a decolorization pump is started to an oil filter for carclazyte oil separation, and decolorized oil is obtained; the deodorization is that the decolored oil is sucked into a deodorization pot through a vacuum pump, when the vacuum degree reaches 755mmHg and the temperature is raised to more than 150 ℃, direct steam is opened to enable the oil to turn up and down to start distillation and deodorization timing, simultaneously, the oil temperature is quickly raised to 220 ℃, after the deodorization time reaches 4 hours, the conduction oil is continuously closed in a vacuum state, a cooling water valve is opened, after the oil temperature is lowered to 150 ℃, the vacuum pump valve and the direct steam valve are closed, and after the temperature is continuously lowered to 80 ℃, the finished oil is obtained through natural cooling.
2. The walnut oil production method according to claim 1, wherein a walnut shell breaking device is adopted in the walnut shell breaking step, the walnut shell breaking device comprises a support frame, a support table is fixed on the support frame, a limit groove is formed in the support table, a push cylinder fixed on the support table is arranged at one end of the limit groove, a push barrier strip arranged in the limit groove is fixedly connected to a piston rod of the push cylinder, a discharge hopper and a support plate which are supported on the support table are sequentially arranged at the side edge of the limit groove, a passageway through which a single walnut can fall is formed in the bottom of the discharge hopper, an outlet of the passageway is positioned right above the limit groove, the lower end of the outlet is slightly higher than the upper surface of the push barrier strip, the distance between the lower end of the outlet and the bottom of the limit groove is such that a single walnut can pass through, and a servo cylinder is fixedly mounted on the support plate, fixedly connected with presses the briquetting on servo cylinder's the piston rod, the other end of spacing recess is equipped with the slope fill that gathers materials of being connected with a supporting bench slope, it all is connected with the PLC controller electricity to promote cylinder and servo cylinder, walnut broken shell means gets into the single walnut that falls spacing recess down in the passageway through the blowing fill, and the promotion blend stop of promoting cylinder drive promotes down along spacing recess earlier and is pushed according to briquetting below, press the briquetting to move down under servo cylinder's drive to with walnut shell surface contact after that, then servo cylinder continues to push down until the walnut shell is broken.
3. The walnut oil production method of claim 2, wherein the front surface of the pushing bars and the lower surface of the pressing block are arc-shaped surfaces.
4. The method for producing walnut oil according to claim 1, wherein the transmission mechanism is a transmission chain, and the transmission chain is engaged with a motor shaft of the driving motor and a gear preset at one end of the oil-pressing screw respectively.
5. The walnut oil production process of claim 1 wherein the helical flighting comprises, in order, a pre-pressure helical flighting, a medium pressure helical flighting, and a high pressure helical flighting, the ratio of the pitch of the pre-pressure helical flighting, medium pressure helical flighting, and high pressure helical flighting being 2: 1.5: 1.
6. the walnut oil production method of claim 1, wherein the cooling device is a cooling fan or a cooling water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010201323.2A CN111363615A (en) | 2020-03-20 | 2020-03-20 | Production method of walnut oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010201323.2A CN111363615A (en) | 2020-03-20 | 2020-03-20 | Production method of walnut oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111363615A true CN111363615A (en) | 2020-07-03 |
Family
ID=71202672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010201323.2A Pending CN111363615A (en) | 2020-03-20 | 2020-03-20 | Production method of walnut oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111363615A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117681480A (en) * | 2024-02-02 | 2024-03-12 | 西南林业大学 | Olive oil extraction equipment and extraction process thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2789011Y (en) * | 2005-01-31 | 2006-06-21 | 忻耀年 | Oil cold press |
| CN102329690A (en) * | 2011-04-07 | 2012-01-25 | 贵州大龙健康油脂有限公司 | Low-temperature cold-pressing and bivariate continuous refining and processing method for oiltea camellia seed oil |
| CN104531337A (en) * | 2014-12-16 | 2015-04-22 | 山东乐悠悠花生油科技有限公司 | Method for continuously preparing tannin, walnut oil and protein powder by using walnuts |
| CN204763287U (en) * | 2015-08-03 | 2015-11-18 | 江先庆 | Take feed arrangement's walnut shelled device |
| EP3100851A1 (en) * | 2015-06-03 | 2016-12-07 | Winfried Gilles | Device for cooling an oil screw press for pressing edible oils, cooled oil screw press and method for cooled oil pressing |
| CN106675764A (en) * | 2016-12-05 | 2017-05-17 | 三门峡华阳食品有限公司 | Production process for extracting walnut oil |
| CN109777605A (en) * | 2019-03-05 | 2019-05-21 | 北京同仁堂安徽中药材有限公司 | A kind of preparation method and its Spire oil manufacturing device of walnut oil |
| CN209135385U (en) * | 2018-10-17 | 2019-07-23 | 临安麻小梦食品有限公司 | A kind of quick removing device of hickory nut |
-
2020
- 2020-03-20 CN CN202010201323.2A patent/CN111363615A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2789011Y (en) * | 2005-01-31 | 2006-06-21 | 忻耀年 | Oil cold press |
| CN102329690A (en) * | 2011-04-07 | 2012-01-25 | 贵州大龙健康油脂有限公司 | Low-temperature cold-pressing and bivariate continuous refining and processing method for oiltea camellia seed oil |
| CN104531337A (en) * | 2014-12-16 | 2015-04-22 | 山东乐悠悠花生油科技有限公司 | Method for continuously preparing tannin, walnut oil and protein powder by using walnuts |
| EP3100851A1 (en) * | 2015-06-03 | 2016-12-07 | Winfried Gilles | Device for cooling an oil screw press for pressing edible oils, cooled oil screw press and method for cooled oil pressing |
| CN204763287U (en) * | 2015-08-03 | 2015-11-18 | 江先庆 | Take feed arrangement's walnut shelled device |
| CN106675764A (en) * | 2016-12-05 | 2017-05-17 | 三门峡华阳食品有限公司 | Production process for extracting walnut oil |
| CN209135385U (en) * | 2018-10-17 | 2019-07-23 | 临安麻小梦食品有限公司 | A kind of quick removing device of hickory nut |
| CN109777605A (en) * | 2019-03-05 | 2019-05-21 | 北京同仁堂安徽中药材有限公司 | A kind of preparation method and its Spire oil manufacturing device of walnut oil |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117681480A (en) * | 2024-02-02 | 2024-03-12 | 西南林业大学 | Olive oil extraction equipment and extraction process thereof |
| CN117681480B (en) * | 2024-02-02 | 2024-04-23 | 西南林业大学 | Olive oil extraction equipment and extraction process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115651753B (en) | Refining process and equipment for mixed cold-pressed rapeseed and linseed oil | |
| CN203065431U (en) | Complete equipment for producing oil with sesames by five screw-type oil expellers | |
| CN111363615A (en) | Production method of walnut oil | |
| CN113951520B (en) | Production device for Chinese yam pulp beverage | |
| CN211771129U (en) | Olive oil production is with squeezing device | |
| CN112706441A (en) | Efficient oil pressing device for rapeseeds | |
| CN114259794A (en) | Peach pulp separating device for peach juice processing and processing method thereof | |
| CN208692245U (en) | A kind of Soft Drinks Plant's production pulp pressing device | |
| CN201018886Y (en) | Gluten forming machine | |
| CN213254852U (en) | Sugarcane juicing device | |
| CN108865592B (en) | Elaeagnus conferta fruit wine preparation equipment | |
| CN208829630U (en) | A kind of Production of Wine juice extractor with continuous pressing function | |
| CN109266788A (en) | A method of it is refined sugar using sugaring device | |
| CN220345246U (en) | Fractionating tower filter equipment | |
| CN216825215U (en) | Peach flesh separator of peach juice processing | |
| CN112352907B (en) | Be used for shaddock peel jam production to use shaddock peel preprocessing device | |
| CN220812318U (en) | Peanut oil production steaming and frying device | |
| CN215440349U (en) | A draw jar for bio-enzyme method draws guava seed oil | |
| CN201881572U (en) | Continuous low-temperature oil expeller | |
| CN220095627U (en) | Fresh flower squeezing device for marigold | |
| CN219784885U (en) | Cereal essence extraction element | |
| CN215686624U (en) | Novel efficient cooking machine | |
| CN221137030U (en) | Cold pressing device for blend oil | |
| CN221549171U (en) | Drying equipment is used in black tea processing | |
| CN218962403U (en) | Brown sugar powder machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |