阅读说明：本技术 一种改进型菜籽油古法榨取工艺 (Improved rapeseed oil ancient-method squeezing process ) 是由 谢国荣 于 2020-06-03 设计创作，主要内容包括：本发明提供一种改进型菜籽油古法榨取工艺,包括以下步骤：步骤一、炒制,将菜籽放入转筒烘炒机中使用柴火进行炒制,炒至通过取样捏碎菜籽壳仁能够完整分离且仁呈金黄色则倒出菜籽；步骤二、榨油,将炒制后的菜籽倒入菜籽油榨油机中进行榨油,得到毛油；步骤三、过滤,每10斤毛油加入一两盐水,所述盐水温度85～95℃,浓度0.5％～1％之间,将混合盐水后的毛油倒入菜籽油清洗装置进行清洗过滤,去除芥酸和沉淀物,步骤四、精炼,将过滤后的毛油加入菜籽油精炼设备,脱磷、脱色、蒸馏处理,制得成品菜籽油。本发明使用柴火炒制菜籽,保持古法榨取菜籽油的香味,并改进转筒烘炒机保证炒制效果；过滤时加入盐水去除芥酸。(The invention provides an ancient method extracting process for improved rapeseed oil, which comprises the following steps: step one, stir-frying, namely putting the rapeseed into a rotary drum roasting and frying machine, and frying by using firewood, and pouring out the rapeseed when the shell and kernel of the rapeseed can be completely separated and the kernel is golden yellow by sampling and kneading; step two, oil pressing, namely pouring the fried rapeseed into a rapeseed oil press for oil pressing to obtain crude oil; and step three, filtering, namely adding one or two brines into every 10 jin of crude oil, wherein the temperature of the brine is 85-95 ℃, the concentration of the brine is 0.5% -1%, pouring the crude oil mixed with the brine into a rapeseed oil cleaning device for cleaning and filtering, removing erucic acid and precipitates, refining, adding the filtered crude oil into rapeseed oil refining equipment, and carrying out dephosphorization, decoloration and distillation treatment to obtain the finished rapeseed oil. According to the invention, the rapeseed is fried by using firewood, so that the flavor of the rapeseed oil squeezed by an ancient method is maintained, and the frying effect of the rotary drum baking and frying machine is improved; during filtering, adding saline water to remove erucic acid.)

1. An improved rapeseed oil ancient method squeezing process is characterized by comprising the following steps:

step one, stir-frying, namely putting the rapeseed into a rotary drum roasting and frying machine, and frying by using firewood, and pouring out the rapeseed when the shell and kernel of the rapeseed can be completely separated and the kernel is golden yellow by sampling and kneading;

and step two, oil pressing, namely adding the fried rapeseed into a rapeseed oil press to press oil to obtain crude oil.

2. The ancient method extracting process for rapeseed oil according to claim 1, wherein in the first step, the drum roasting machine comprises: the heating furnace comprises a feeding hopper, a feeding pipe is communicated with the feeding pipe below the feeding hopper, the feeding pipe extends into a rotary drum, a feeding and discharging baffle is arranged at the feeding and discharging port of the rotary drum, the feeding and discharging baffle is obliquely arranged, dragon teeth are arranged on the inner wall of the rotary drum and are obliquely arranged in small range, the oblique direction of the dragon teeth near the feeding and discharging baffle is opposite to that of the feeding and discharging baffle, the lower part of the heating chamber is communicated with a furnace, firewood is added into the furnace to ignite and burn, a furnace door of the furnace is connected with an air blower, a chimney is arranged at the top of the heating chamber, the rotary drum is installed in the heating chamber through a supporting bearing, the other end of the rotary drum opposite to the feeding and discharging port is connected with a belt pulley II, the belt pulley II is connected with a belt pulley I through a belt, Reverse rotation and shutdown.

3. The improved rapeseed oil ancient extraction process according to claim 2, characterized in that a motor drives a rotary drum to rotate forward, rapeseed is added into a feed hopper, the rapeseed enters the rotary drum, the rapeseed is heated and fried in the rotary drum for 15-25 minutes, a motor rotates backward, a part of the rapeseed is poured out and kneaded into pieces, whether the rapeseed shells and kernels can be completely separated is observed, the rapeseed fried standard after separation is that the kernels are golden yellow and light yellow, and the motor continues to rotate backward until all the rapeseed are poured out after the rapeseed is judged to be qualified.

4. The ancient method extracting process for the improved rapeseed oil according to any one of claims 1 to 3, characterized in that the process further comprises the following steps: and step three, filtering, namely adding two saline water into every 10 jin of crude oil, wherein the temperature of the saline water is 85-95 ℃, the concentration of the saline water is 0.5-1%, and pouring the crude oil mixed with the saline water into a rapeseed oil cleaning device for cleaning and filtering to remove erucic acid and precipitates.

5. The ancient method extracting process for the improved rapeseed oil according to any one of claims 1 to 4, characterized in that the process further comprises the following steps: and step four, refining, namely adding the filtered crude oil into rapeseed oil refining equipment, and carrying out dephosphorization, decoloration and distillation treatment to obtain the finished rapeseed oil.

6. The improved rapeseed oil ancient-method pressing process according to any one of claims 1 to 5, characterized in that in the second step, the pressing temperature is 90-120 ℃, and water is automatically sprayed in an oil press during the pressing process, so that the humidity is kept constant.

7. The ancient method extracting process for rapeseed oil according to claim 6, characterized in that the extracting temperature is 110 ℃.

8. The ancient method extracting process for rapeseed oil according to claim 6, wherein the rapeseed residues after one-time extraction are recycled and repeatedly extracted for 2-3 times.

9. The ancient method for extracting rapeseed oil according to claim 6, wherein a vacuum automatic material sucking device is added at the front end of the oil press, and the fried rapeseed is automatically sucked into a feed hopper of the oil press.

10. The ancient method for extracting rapeseed oil according to claim 7, wherein the rapeseed oil yield in an oil press is above 35%.

Technical Field

The invention belongs to the technical field of rapeseed oil preparation processes, and particularly relates to an improved rapeseed oil ancient-method squeezing process.

Background

Rapeseed oil is one of the main edible oils in China, and when the rapeseed oil is used for processing the rapeseed oil, some problems need to be solved urgently: the first method is that the finished oil is not fragrant enough, and the stir-frying of the rapeseed is one of the methods for solving the problem, however, how to set the stir-frying process, how to control the stir-frying process, and how to judge the mature standard of stir-frying all affect the quality of the finished oil; secondly, how to effectively improve the oil yield in the oil pressing process; thirdly, the squeezed crude oil contains more erucic acid and precipitates, and the taste and quality of the finished oil can be ensured only by effective filtration and refining; the problem is solved, and the rapeseed oil with fragrant and strong taste can be obtained.

Disclosure of Invention

The invention aims to improve the process on the basis of ancient rapeseed oil extraction, and provides an improved ancient rapeseed oil extraction process.

An improved rapeseed oil ancient-method squeezing process comprises the following steps:

step one, frying, namely putting the rapeseeds into a rotary drum baking and frying machine, frying by using firewood, and pouring out the rapeseeds when the rapeseeds are fried until the shells and kernels of the sampled and crushed rapeseeds can be completely separated and the kernels are golden yellow;

and step two, oil pressing, namely pouring the fried rapeseed into a rapeseed oil press to press oil to obtain crude oil.

Further, the process also comprises the following steps:

and step three, filtering, namely adding one or two saline water into every 10 jin of crude oil, wherein the temperature of the saline water is 85-95 ℃, the concentration of the saline water is 0.5-1%, and pouring the crude oil mixed with the saline water into a rapeseed oil cleaning device for cleaning and filtering to remove erucic acid and precipitates.

Further, the process also comprises the following steps:

and step four, refining, namely adding the filtered crude oil into rapeseed oil refining equipment, and carrying out dephosphorization, decoloration and distillation treatment to obtain the finished rapeseed oil.

Further, in the first step, the drum roaster includes: the automatic heating furnace comprises a feeding hopper, a feeding pipe is communicated with the lower part of the feeding hopper, the feeding pipe extends into a rotary drum, a feeding and discharging baffle is arranged at the position of a feeding and discharging port of the rotary drum, the feeding and discharging baffle is obliquely arranged, dragon teeth are arranged on the inner wall of the rotary drum, the small-amplitude oblique arrangement of the dragon teeth is realized, the oblique direction of the dragon teeth near the feeding and discharging baffle is opposite to the oblique direction of the feeding and discharging baffle, the rotary drum is arranged in a heating chamber, the lower part of the heating chamber is communicated with a furnace, firewood is added into the furnace for ignition and combustion, a furnace door of the furnace is connected with an air blower, a chimney is arranged at the top of the heating chamber, the rotary drum is arranged in the heating chamber through a supporting bearing, the other end of the rotary drum, which corresponds to the feeding and discharging port, is connected with a belt pulley, Reverse rotation and shutdown.

Further, the motor drives the rotary drum to rotate forwards, the rapeseeds are added into the feed hopper, the rapeseeds enter the rotary drum, the rapeseeds are heated and fried in the rotary drum for 15-25 minutes, the motor rotates backwards, a part of the rapeseeds are poured out and crushed, whether the kernel of the rapeseed shell can be completely separated is observed, the fried standard of the rapeseeds after separation is that the kernel is golden yellow and is light yellow in color during production, and the motor continues to rotate backwards until all the rapeseeds are poured out after the rape seeds are judged to be qualified.

Further, in the second step, the oil pressing temperature is 90-120 ℃, water is automatically sprayed in the oil press in the oil pressing process, and the humidity is kept constant.

Further, the oil pressing temperature is 110 ℃.

Further, the rapeseed residues after the primary pressing are recycled and repeatedly pressed for 2-3 times.

Furthermore, a vacuum automatic material suction device is added at the front end of the oil press, and the fried rapeseed is automatically sucked into a feed hopper of the oil press.

Furthermore, the oil yield of the rapeseeds in the oil press is more than 35%.

The invention has the beneficial effects that: frying the rapeseed by using firewood, keeping the fragrance of the rapeseed oil squeezed by the ancient method, and improving a rotary drum baking and frying machine to ensure the frying effect; the temperature and the humidity are kept constant in the oil pressing process, and the oil yield is ensured; adding saline water to remove erucic acid during filtering; finally, refining to remove water to obtain the finished rapeseed oil.

Drawings

FIG. 1 is a schematic structural view of a drum roasting-frying machine used in an ancient method extracting process of improved rapeseed oil;

Detailed Description

The present invention will be further described with reference to the accompanying drawings so as to facilitate the understanding of the present invention by those skilled in the art.

All directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship, movement, etc. of each component in a specific posture (as shown in the figure), and if the specific posture is changed, the directional indicator is changed correspondingly; the technical scheme is described to achieve the aim of the invention, and the parts which are not described in detail are achieved by adopting the prior art.

As shown in the attached figure 1, the improved rapeseed oil ancient-method extraction process comprises the following steps:

step one, stir-frying, namely putting the rapeseeds into a rotary drum roasting and frying machine for roasting by using firewood, wherein the rotary drum roasting and frying machine is shown as an attached drawing 1 and comprises the following steps: a feed hopper 1, a feed pipe 2 is communicated with the lower part of the feed hopper 1, the feed pipe 2 extends into a rotary drum 4, a feed inlet and a feed outlet of the rotary drum 4 are provided with a feed inlet and a feed outlet baffle 3, the feed inlet and the feed outlet baffle 3 are obliquely arranged, the inner wall of the rotary drum 4 is provided with a dragon tooth 5, the dragon tooth 5 is obliquely arranged in a small range (the inclination angle is 2-5 degrees), the inclination direction of the dragon tooth 5 near the feed inlet and the feed outlet baffle 3 is opposite to that of the feed inlet and the feed outlet baffle 3, the dragon tooth 5 is used for stirring the rapeseeds in the rotary drum 4 and assisting heat transfer when the rotary drum 4 rotates, and can also guide the rapeseeds to a region with higher temperature in the middle part of the rotary drum 4 to be heated, the feed inlet and feed outlet baffle 3 is used for frying the rapeseeds in the rotary drum 4 when the rotary drum 4 rotates in the forward direction, the rapesee, the rapeseed cooking stove is characterized in that firewood is added into the stove 6 to be ignited and combusted, a furnace door of the stove 6 is connected with a blower 7, the top of the heating chamber 8 is provided with a chimney 9, the rotary drum 4 is installed in the heating chamber 8 through a supporting bearing 10, the other end, opposite to a feeding port and a discharging port, of the rotary drum 4 is connected with a belt pulley 14, the belt pulley 14 is connected with a belt pulley 12 through a belt 13, the belt pulley 12 is connected with a motor 11, the motor 11 is connected with a controller, the controller is provided with three gears to respectively control the forward rotation, the reverse rotation and the shutdown of the motor 11, a user adds rapeseed into the feed hopper 1, the rapeseed enters the rotary drum 4, the motor 11 drives the rotary drum 4 to rotate forwards, the rapeseed is heated and fried in the rotary drum 4 and is fried for about 20 minutes, the motor 11 is rotated backwards to pour out a part of the rapeseed, whether the rapeseed shell and kernel can be completely, the color of the vegetable seeds is light yellow in the course of production, and the motor 11 is continuously rotated reversely until all the vegetable seeds are poured out after the vegetable seeds are judged to be qualified;

step two, extracting oil, namely pouring the fried rapeseed into a rapeseed oil press for oil extraction, adding a vacuum automatic material suction device at the front end of the oil press, automatically sucking the fried rapeseed into a hopper of the oil press, wherein the oil extraction temperature is 90-120 ℃, the temperature is the best at 110 ℃, sprinkling water automatically in the oil press during the oil extraction process, keeping the humidity constant, and recycling and repeatedly squeezing the rapeseed residue after primary squeezing for 2-3 times to obtain crude oil, so that the oil extraction rate of the rapeseed in the oil press reaches more than 35%;

step three, filtering, namely adding one or two saline water into every 10 jin of crude oil, wherein the temperature of the saline water is 85-95 ℃, the concentration of the saline water is 0.5-1%, and pouring the crude oil mixed with the saline water into a rapeseed oil cleaning device for cleaning and filtering to remove erucic acid and precipitates;

and step four, refining, namely adding the filtered crude oil into rapeseed oil refining equipment, and carrying out dephosphorization, decoloration and distillation treatment to obtain the finished rapeseed oil.

The invention has the advantages that: frying the rapeseed by using firewood, keeping the fragrance of the rapeseed oil squeezed by the ancient method, and improving a rotary drum baking and frying machine to ensure the frying effect; the temperature and the humidity are kept constant in the oil pressing process, and the oil yield is ensured; adding saline water to remove erucic acid during filtering; and finally, refining to remove water to obtain the finished rapeseed oil.

The indexes of the rapeseed oil product prepared by the invention after inspection are shown in the following table:

from the table above, it can be seen that the rapeseed oil prepared by the improved rapeseed oil ancient method extraction process reaches various rapeseed oil qualified standards.

In addition, the results of manual tests conducted by the organization of the applicant show that the rapeseed oil is fragrant and has faint scent similar to sesame oil and peanut oil.

The above examples are only intended to illustrate specific embodiments of the present invention, but not to limit the present invention, and it will be apparent to those skilled in the art that several modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should be construed as the protection scope of the present invention.