JP2000204391A - Apparatus for refining edible oil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for refining an edible oil capable of sufficiently removing deteriorated components in the used edible oil in a short time. SOLUTION: This apparatus 1 for refining an edible oil comprises a stirrer 5 for mixing the used edible oil with a composition for refining the edible oil capable of adsorbing deteriorated components, a housing container 6 having a filter 7 for carrying out the solid-liquid separation of the composition for refining the edible oil adsorbing the deteriorated components from the edible oil, a first tank 2 equipped with the stirrer 5 and the housing container 6, a second tank 10 for passing the edible oil freed and refined out of the composition for refining the edible oil with the filter 7 through a pipe and making the edible oil flow from the first tank 2 therein, a vacuum device 9 for regulating the interior of the second tank 10 to a negative pressure, a negative pressure regulating valve 8 for regulating the second tank 10 to a negative pressure and a takeout part 11 for the refined oil for taking out the refined edible oil from the second tank 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an edible oil purifying apparatus for purifying used petroleum oil, salad oil and other edible oils which have turned brown to chemically regenerate them.

[0002]

2. Description of the Related Art When preserving and reusing edible oil used in cooking such as tempura and fry, it is usual to filter out and remove food debris such as fried balls floating in the oil. . At this time, in order to positively prevent deterioration of the edible oil, a purifying agent is introduced, and the deteriorating component in the used oil is adsorbed on the purifying agent. The purifying agent used for this purpose includes activated carbon, activated clay, activated alumina and the like.

[0003] Here, edible oil comes into contact with air or water at a high temperature in the fried food, and is hydrolyzed by the moisture in the fried food to produce free fatty acids. Further, it is thermally oxidized by oxygen in the air to generate peroxide. Since these generated deterioration components are considered to have a negative effect on human health,
When the edible oil is used again, it is desirable to remove it. Further, if the edible oil is reused without being purified, the color of the fried food is changed by browning substances such as ingredients of the fried food and food waste such as fried balls, and a bad odor transferred from the seed is added.

Therefore, various purifying apparatuses have been proposed in the past.

[0005]

SUMMARY OF THE INVENTION Here, Japanese Patent Application Laid-Open No.
No. 15646 proposes a technique in which used oil and a purifying agent are mixed, a deteriorating agent is used to adsorb and remove degraded components in the used oil, and a purified oil is obtained through a fine-grained filter by a natural filtration method. .

However, according to this, although filtration is performed smoothly at the beginning of filtration, there is nothing other than the oil's own weight to promote the filtration, and the purifying agent closes the eyes of the filter over time. Therefore, there is a problem that filtration requires a long time.

[0007] If a suction filtration method as proposed in Japanese Patent Application Laid-Open No. 60-226598 is used, the filtration time is shortened, but the contact time between the used deteriorated oil and the purifying agent is shortened. There is a problem that the agent cannot sufficiently adsorb the deteriorating component in the used oil and purification becomes insufficient.

[0008] In particular, when an edible oil purifying apparatus is used in the restaurant industry such as a family restaurant, an izakaya, and a fast food, there is a restriction that the purifying must be performed in a short time after the completion of the work, so that the above two problems are caused. Points will become more apparent.

Here, in general, the quality of edible oil is evaluated based on the following physical property values. Therefore, in order to purify edible oil, it is necessary to reduce the levels of these items. That is, the items are an acid value (hereinafter, referred to as “AV value”), a peroxide value (hereinafter, referred to as “POV value”), and a yellow degree (hereinafter, referred to as “N value”). In addition,
The AV value indicates the amount of free fatty acids generated by hydrolysis, the POV value indicates the amount of peroxides such as aldehydes and ketones, and the N value indicates yellowness. As a result of thermal oxidation or thermal polymerization, the yellow color of the edible oil increases and the N value deteriorates. Regarding the N value, X, Y, Z (ASTM D1925) which is a tristimulus value in the XYZ coloring system of the specified sample
Using the equation, N value = 100 (1.28X-1.06Z) /
Defined as Y.

Accordingly, an object of the present invention is to provide an edible oil purifying apparatus capable of sufficiently removing a deteriorating component in used edible oil in a short time.

[0011]

In order to solve this problem, an edible oil purifying apparatus of the present invention comprises: a stirrer for mixing used edible oil and an edible oil purifying composition for adsorbing a deteriorating component; A storage container having a filter for solid-liquid separation of the edible oil purifying composition and the edible oil to which the deteriorating component is adsorbed, a first tank having a stirrer and a storage container, and the edible oil purifying composition is removed by the filter. A second tank through which edible oil that has been purified and flows from the first tank through a pipe, a vacuum device that makes the second tank a negative pressure, a negative pressure adjustment valve that adjusts the second tank to a negative pressure, And a purification oil take-out section for taking out oil from the second tank.

This makes it possible to sufficiently remove the deteriorating components in the used edible oil in a short time.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention provides a stirrer for mixing a used edible oil and an edible oil purifying composition for adsorbing a deteriorating component, A storage container having a filter for solid-liquid separation of the cleaning composition and the edible oil, and a first tank including a stirrer and a storage container,
A second tank through which the edible oil purified by removal of the edible oil purification composition by the filter flows from the first tank through a pipe;
An edible oil purifying device comprising a vacuum device for setting the second tank to a negative pressure, a negative pressure adjusting valve for adjusting the second tank to a negative pressure, and a clarified oil extracting unit for extracting edible oil from the second tank; Vessel and second
The edible oil purifying composition, which has adsorbed the deteriorating component from the edible oil which is forcibly led from the first tank to the second tank by the pressure difference with the tank, is removed by the filter, so that the deteriorating component in the used edible oil is It has the effect that it is possible to sufficiently remove it in a short time.

According to a second aspect of the present invention, there is provided the edible oil purifying apparatus according to the first aspect, wherein the vacuum device uses the negative pressure generated by the circulation of water to make the second tank a negative pressure. A vacuum device with a simple structure is created,
Since the generation of vibration and noise is small, the working environment can be maintained well.

According to a third aspect of the present invention, there is provided a stirrer for mixing a used edible oil and an edible oil purifying composition for adsorbing the deteriorating component, and a edible oil purifying composition for adsorbing the deteriorating component. A storage container having a filter for solid-liquid separation of edible oil, a first tank provided with a stirrer and a storage container, a second tank connected to the first tank by piping, and attached to the piping;
A transfer pump for transferring the edible oil purified by removing the edible oil purification composition by the filter from the first tank to the second tank with the second tank at a positive pressure, and a positive pump for adjusting the second tank to a positive pressure. An edible oil purifying device comprising a pressure regulating valve and a purified oil take-out unit for taking out edible oil from the second tank, and forcibly leads from the first tank to the second tank by a pressure difference between the first and second tanks. Since the edible oil purifying composition which adsorbs the deteriorating component from the edible oil to be removed is removed by the filter, it has an effect that the deteriorating component in the used edible oil can be sufficiently removed in a short time.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the pipe is provided with:
An edible oil purifier equipped with an inflow control valve for controlling the flow of edible oil from the first tank to the second tank, which sufficiently removes deteriorating components in used edible oil in a short time. Has the effect that it becomes possible.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the filter has a finer mesh than the edible oil purification composition in the first tank. An edible oil purifying device comprising: a first filter portion arranged toward the inside; and a second filter portion having a finer mesh than the first filter portion and arranged toward the second tank. It has an effect that it is possible to obtain a purified oil having high transparency.

According to a sixth aspect of the present invention, in the first aspect of the present invention, a gap is formed between the first filter portion and the second filter portion. Edible oil purifying apparatus, which has an effect of preventing clogging of a filter and enabling smooth filtration.

According to a seventh aspect of the present invention, in the invention according to any one of the first to fifth aspects, a deodorant is provided between the first filter section and the second filter section. Edible oil purifying apparatus, which has an effect that even odor components in the purified oil can be removed in a short time.

According to an eighth aspect of the present invention, in the invention according to any one of the first to seventh aspects, the second tank is formed by vertically dividing the second tank. An edible oil purification device provided with a filter for filtering an impurity component in edible oil introduced into the edible oil, wherein the impurity component contained in the edible oil filtered by the filter in the first tank is used in the second tank. Since it is filtered off by a filter, it has an effect that it is possible to obtain a purified oil having higher transparency.

According to a ninth aspect of the present invention, in the invention of the eighth aspect, the negative pressure regulating valve corresponds to an upper chamber and a lower chamber partitioned by a filter provided in the second tank. The edible oil purifying device is installed in such a manner that the pressure in the lower chamber can be directly reduced to a negative pressure, and the filtering time can be further reduced.

According to a tenth aspect of the present invention, in the invention according to any one of the first to ninth aspects, a pressure sensor for detecting a pressure in the second tank is provided in the second tank. This is an installed edible oil purifying device, which detects the pressure in the second tank and automatically opens and closes the negative pressure adjusting valve, so that the filtration can be controlled with a desired pressure difference. Having.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. In these drawings, the same members are denoted by the same reference numerals, and duplicate description is omitted.

(Embodiment 1) FIG. 1 is a schematic view showing an edible oil purifying apparatus according to Embodiment 1 of the present invention, and FIG.
FIG. 3 is an explanatory view showing a filter attached to the edible oil purifying apparatus of FIG. 1, and FIG.
FIG. 4 is a graph showing the relationship between the filter value and the conventional technology, FIG. 4 is a graph showing the relationship between the filtration time and the POV value by the edible oil purification device of FIG. 1 together with the conventional technology, and FIG. It is a graph which shows the relationship between a filtration time and an N value with a prior art.

As shown in FIG. 1, the edible oil purifying apparatus 1 comprises:
A stirrer 5 that mixes used edible oil with an edible oil purification composition that adsorbs degraded components (free fatty acids, peroxides, browning substances, etc.) in the edible oil, and the edible oil purification composition is purified. A filter 7 for filtering the edible oil to separate solid and liquid, a storage container 6 integrally provided with the filter 7, a first tank 2 including a stirrer 5 and a storage container 6, and a filter 7 A second tank 10 into which purified oil flows. Also, an inflow control valve 4 installed in the middle of a pipe connecting the first tank 2 and the second tank 10, a vacuum device 9 for making the second tank 10 a negative pressure, A negative pressure regulating valve 8 installed between the apparatus 9 and the second tank 10 for adjusting the pressure of the second tank 10 to a negative pressure; and a pressure sensor 3 for detecting the pressure of the second tank 10.
And a purified oil take-out section 11 for taking out purified edible oil from the second tank 10.

Here, the vacuum device 9 has a structure in which the second tank 10 is made to have a negative pressure by utilizing a negative pressure generated by circulation of water. This simplifies the structure of the device, and maintains a favorable working environment because vibration and noise are less generated.

As shown in FIG. 2, the filter 7 includes a nonwoven fabric (first filter portion) 101 having a finer mesh than the edible oil purification composition, and a filter paper (second filter portion) having a finer mesh than impurities in the purified oil. ) 102 and a deodorant 103 such as activated carbon sandwiched between the nonwoven fabric 101 and the filter paper 102. The nonwoven fabric 101 is wider than the filter paper 102, and holes 104 for attaching the filter 7 to the storage container 6 are formed at four locations on the outer periphery of the nonwoven fabric 101. The filter 7 is attached such that the nonwoven fabric 101 faces the inside of the first tank 2, and the filter paper 102, which is finer than the nonwoven fabric 101, faces the second tank 10.

The filter 7 does not need to include the deodorant 103. Further, a gap may be formed between the nonwoven fabric 101 and the filter paper 102. By forming such a gap, clogging of the filter 7 is prevented, so that filtration can be performed smoothly.

As shown in FIG. 1, the storage container 6 is a container in which the degraded oil and the edible oil purifying composition are charged at a predetermined ratio and mixed by the stirrer 5 for a desired time. The cleaning composition adsorbs and removes free fatty acids, peroxides, and browning substances that are degraded components in the degraded oil.

Thereafter, the inflow control valve 4 is opened, and the vacuum device 9 is opened.
Is operated to open the negative pressure adjusting valve 8, a negative pressure is generated in the second tank 10 and a pressure difference is generated between the second tank 10 and the first tank 2, which is at atmospheric pressure. Then, due to this pressure difference, the mixture of the oil and the edible oil purification composition is guided from the filter 7 to the second tank 10 through a pipe connecting the first tank 2 and the second tank 10.

At this time, the non-woven fabric 101 of the filter 7 removes the edible oil-purifying component adsorbing the deteriorating component, the deodorant 103 removes the odor, and the filter paper 102 removes fine impurities. The edible oil thus purified and stored in the second tank 10 is removed by opening the purified oil removal valve 11.

The pressure sensor 3 detects the pressure in the second tank 10 so that the negative pressure regulating valves 8, 1 are automatically detected.
Since opening and closing of 3 is performed, it becomes possible to control filtration with a desired pressure difference.

Next, the actual purification results will be described.
Here, the edible oil purification composition of the present embodiment includes SiO 2
_A commercially available _2- MgO-based adsorbent was used. The used degraded oil used was fried or tempura cooked with soybean oil (white squeezed oil).

Table 1 shows the physical properties of the new oil and the used deteriorated oil.

[0035]

[Table 1]

Further, in the purification step, 110 g of the above-mentioned edible oil purification composition and 1 liter of the used deteriorated oil shown in (Table 1) were placed in the storage container 6, and mixed and stirred by the stirrer 5 for 30 minutes. As a result, the edible oil purification composition adsorbs the free fatty acids, peroxides, browning substances, and the like, which are the deteriorating components in the degraded oil. Thereafter, when the vacuum device 9 is operated, the inflow control valve 4 is opened, and the negative pressure adjusting valve 8 is opened, filtration is started. At this time, the filter 7 has a function of first filtering out most of the edible oil purifying composition with the nonwoven fabric 101 and then filtering out impurity components mixed in the purified oil with the filter paper 102.
Further, since the deodorizing agent 103 is built in the filter 7, the deodorizing agent 103 removes the malodor in the degraded oil transferred from the seed, and the purified oil flows into the second tank 10.

FIG. 3 shows the result of measuring the change in the AV value in the deteriorated oil by sampling at a predetermined time after the start of the filtration. The horizontal axis shows the filtration time, and the vertical axis shows the AV value, which is the required amount of 0.1 N potassium hydroxide solution required to neutralize 1 g of degraded oil.

As shown in FIG. 3, in the edible oil purifying apparatus 1 according to the present embodiment, the filtration is completed in about 30 minutes, whereas in the conventional technique, it takes 8 hours to complete the filtration. I have. The conventional technique is disclosed in Japanese Patent Application Laid-Open No. 56-15 / 1981.
No. 646 publication. Looking at the state of the decrease in the AV value, the edible oil purification device 1 according to the present embodiment shows that the edible oil purification device 1 has a value of 2.50 in 30 minutes from the start of filtration to the completion of filtration.
To 0.48 from the prior art,
It decreased from 2.50 to only 1.68 in 8 hours from the start of filtration to the completion of filtration. And filtration start 3
Comparing the values after 0 minutes, it can be seen that the edible oil purification device 1 according to the present embodiment has a significantly better AV value than the conventional technology.

FIG. 4 shows the filtration time on the horizontal axis and the POV value indicating the number of milliequivalents of peroxide in 1 kg of degraded oil on the vertical axis.

The edible oil purification device 1 according to the present embodiment is
Only 30 minutes were required from the start of filtration to the completion of filtration, and the POV value at that time was 4.53 to 1.
In contrast, the conventional technique requires 8 hours from the start of filtration to the completion of filtration.
The OV value only drops from 4.53 to only 2.1. Then, comparing the values 30 minutes after the start of filtration,
It can be seen that the edible oil purification device 1 according to the present embodiment has a significantly higher POV value than the conventional technology.

FIG. 5 shows the change in the N value from the start of filtration to the completion of filtration. According to FIG. 5, the edible oil purification device 1 according to the present embodiment requires only 30 minutes from the start of filtration to the completion of filtration, and the N value at that time decreases from 150 to 52. On the other hand, in the related art, it takes 8 hours from the start of filtration to the completion of filtration, and the N value at that time is merely reduced from 150 to 105. When compared with the value 30 minutes after the start of filtration, the edible oil purification device 1 according to the present embodiment
It can be seen that the N value is much better than in the prior art.

As can be seen from FIGS. 3, 4 and 5, if the used table oil is purified by the edible oil purifying apparatus 1 according to the present embodiment, the AV value, POV
It can be seen that the physical properties of both the value and the N value were significantly improved in a short time, and that they were purified to a level close to that of new oil. In addition, the malodor transferred from the seed is also removed, and a transparent regenerated oil is obtained.

Therefore, such an edible oil purifying apparatus 1
According to this, it is possible to sufficiently remove the deteriorating components such as free fatty acids, peroxides and browning substances in the used edible oil in a short time. In addition, it is also possible to remove the bad smell transferred from the seed in a short time.

(Embodiment 2) FIG. 6 is a schematic diagram showing an edible oil purifying apparatus according to Embodiment 2 of the present invention.

In FIG. 6, an edible oil purifying device 21 comprises a stirrer 5 for mixing used edible oil and an edible oil purifying composition for adsorbing the degraded components in the edible oil, and an edible oil purifying composition. A filter 7 for filtering the purified edible oil to separate solid and liquid, and a storage container 6 integrally provided with the filter 7
, A first tank 2 including a stirrer 51 and a storage container 6, and a second tank 10 in which the purified oil filtered by the filter 7 flows and in which the filter 12 is installed. Also, an inflow control valve 4 installed in the middle of a pipe connecting the first tank 2 and the second tank 10, a vacuum device 9 for making the second tank 10 a negative pressure, and a filter 12 are vertically divided. A negative pressure control valve 8 installed between the upper chamber of the second tank 10 and the vacuum device 9 for adjusting the upper chamber to a negative pressure;
A negative pressure adjusting valve 13 installed between the lower chamber of the vacuum chamber 9 and the vacuum device 9 for adjusting the pressure of the lower chamber to a negative pressure; a pressure sensor 3 for detecting the pressure of the second chamber 10; Purified oil removal valve 11 for removing purified edible oil from 10
And The filter 7 is the same as that described in the first embodiment. Further, the filters 12 can be provided at a plurality of locations.

According to the edible oil purification device 21 having such a configuration, since the filter 12 is provided in the second tank 10, the purified oil filtered by the filter 7 provided in the first tank 2 is Further, since the impurity component in the oil is filtered off by the filter 12, the N value and the transparency are further improved.

Also, since the negative pressure regulating valves 8 and 13 are respectively installed in the upper chamber and the lower chamber divided by the filter 12 installed in the second tank 10, the lower chamber is directly set to the negative pressure. And the filtration time can be further reduced.

(Embodiment 3) FIG. 7 is a schematic diagram showing an edible oil purifying apparatus 31 according to Embodiment 3 of the present invention.

In FIG. 7, an edible oil purifying device 31 comprises a stirrer 5 for mixing used edible oil and an edible oil purifying composition for adsorbing the degraded components in the edible oil, and an edible oil purifying composition. A filter 7 for filtering the purified edible oil to separate solid and liquid, and a storage container 6 integrally provided with the filter 7
, A first tank 2 including a stirrer 5 and a storage container 6, and a second tank 10 in which a purified oil filtered by the filter 7 flows and a filter 12 is installed. Also,
The inflow control valve 4 installed in the middle of the pipe connecting the first tank 2 and the second tank 10, a transfer pump 14 for making the second tank 10 positive pressure, and a filter 12 are vertically divided. A positive pressure adjusting valve 15 and a positive pressure adjusting valve 16 for adjusting the upper chamber and the lower chamber of the second tank 10 to a positive pressure, a pressure sensor 3 for detecting the pressure of the second tank 10, A purification oil removal valve 11 for removing purified cooking oil from the tank is provided. The filter 7 is the same as that described in the first embodiment.

According to the edible oil purifying apparatus 31 having such a configuration, since the transfer pump 14 for setting the second tank 10 to a positive pressure is provided, the second tank 10 is pressurized to a positive pressure. .
Therefore, the purified oil filtered by the filter 7 of the first tank 2 is further purified by the filter 12, so that the N value and the transparency are further improved.

In the embodiment described above, the edible oil purifying devices 1, 21 and 31 according to the present invention are used for regenerating used edible oil. Degraded oil such as oil and fuel oil may be used. In the present embodiment, the purification composition used in the edible oil purification devices 1, 21 and 31 according to the present invention contains SiO ₂ —MgO _2.
Although a system-based adsorbent was used, good results can be obtained by using a commercially available purifying agent such as activated clay or activated alumina.

[0052]

As described above, according to the present invention, the edible oil adsorbing the deteriorating components from the edible oil which is forcibly guided from the first tank to the second tank by the pressure difference between the first tank and the second tank. Since the oil purification composition is removed by the filter, an effective effect that it is possible to sufficiently remove the deteriorating component in the used edible oil in a short time is obtained.

Thus, the acid value, the peroxide value, and the yellowness, which are indicators of the deteriorated oil, are reduced, and an effective effect that the purified edible oil is reformed until it is close to a new oil can be obtained.

Therefore, since the deteriorated oil can be purified and used repeatedly, the frequency of purchasing new oil is significantly reduced, and an effective effect of being very economical can be obtained.

Further, since the amount of the degraded oil to be discarded is reduced by reusing the degraded oil, an effective effect of reducing environmental pollution and preventing environmental destruction is obtained.

If the vacuum pressure is applied to the second tank using the negative pressure generated by the circulation of water, a vacuum device having a simple structure can be manufactured, and at the same time, the generation of vibration, noise, and the like can be reduced. Since the number is small, an effective effect that a good working environment can be maintained can be obtained.

If the filter is composed of the first filter portion and the second filter portion, an effective effect that it is possible to obtain a highly transparent purified oil can be obtained.

If a gap is formed between the first filter portion and the second filter portion, it is possible to obtain an effective effect that clogging of the filter is prevented and filtering can be performed smoothly.

If a deodorant is provided between the first filter section and the second filter section, an effective effect that it is possible to remove even odor components in the purified oil in a short time can be obtained.

If a filter is provided in the second tank, the impurity component contained in the edible oil filtered by the filter of the first tank is filtered off by the filter of the second tank, so that the purified oil having higher transparency is obtained. Is obtained.

If the negative pressure regulating valves are respectively installed in the upper chamber and the lower chamber of the second tank, the lower chamber can be directly set to the negative pressure, and the filtration time can be further reduced. Effective effects can be obtained.

If a pressure sensor is installed in the second tank, the pressure in the second tank is detected and the opening / closing of the negative pressure regulating valve is automatically performed, so that the filtration can be controlled with a desired pressure difference. Is obtained.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an edible oil purification device according to Embodiment 1 of the present invention.

FIG. 2 is an explanatory view showing a filter attached to the edible oil purification device of FIG. 1;

FIG. 3 is a graph showing a relationship between a filtration time and an AV value by the edible oil purification device of FIG. 1 together with a conventional technique.

FIG. 4 is a diagram illustrating the filtration time and POV of the edible oil purification device of FIG. 1;
Graph showing the relationship with the value together with the conventional technology

FIG. 5 is a graph showing the relationship between the filtration time and the N value by the edible oil purification device of FIG. 1 together with a conventional technique.

FIG. 6 is a schematic diagram showing an edible oil purification device according to Embodiment 2 of the present invention.

FIG. 7 is a schematic diagram showing an edible oil purification device according to Embodiment 3 of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Edible oil purification apparatus 2 1st tank 3 Pressure sensor 4 Inflow control valve 5 Stirrer 6 Storage container 7 Filter 8 Negative pressure control valve 9 Vacuum device 10 2nd tank 11 Purified oil removal part 12 Filter 13 Negative pressure control valve 14 Transfer Pump 15 Positive pressure control valve 16 Positive pressure control valve 21 Edible oil purification device 31 Edible oil purification device 101 Nonwoven fabric (first filter unit) 102 Filter paper (second filter unit) 103 Deodorant

 ──────────────────────────────────────────────────の Continued on the front page F term (reference) 4B026 DC01 DC02 DC06 DG01 DP01 DP10 DX01 4H059 AA02 AA11 BC03 BC13 CA05 CA21 CA51 CA73 CA93 CA96 EA21 EA40

Claims (10)

[Claims] 1. A stirrer for mixing a used edible oil and an edible oil purifying composition for adsorbing a deteriorating component, and a solid-liquid separation between the edible oil purifying composition adsorbing the deteriorating component and the edible oil. A storage container having a filter, a first tank including the stirrer and the storage container, and the edible oil purified by removing the edible oil-purifying composition by the filter and passing through the pipe through the first tank. A second tank that flows from the tank, a vacuum device that makes the second tank a negative pressure, a negative pressure adjustment valve that adjusts the second tank to a negative pressure, and a purification oil that takes out the edible oil from the second tank An edible oil purification device comprising a take-out part. 2. The edible oil purifying apparatus according to claim 1, wherein the vacuum device uses the negative pressure generated by the circulation of water to make the second tank a negative pressure. 3. A stirrer for mixing a used edible oil and an edible oil purifying composition for adsorbing the deteriorating component, and a solid-liquid separation of the edible oil purifying composition adsorbing the deteriorating component and the edible oil. A storage container having a filter, a first tank provided with the stirrer and the storage container, a second tank connected to the first tank by a pipe, and attached to the pipe, and the cooking oil by the filter. A transfer pump for transferring the edible oil, from which the cleaning composition has been removed and purified, to the second tank with a positive pressure, and transferring the edible oil from the first tank to the second tank; and adjusting the second tank to a positive pressure. An edible oil purifying device comprising: a positive pressure regulating valve; and a purified oil take-out unit for taking out the edible oil from the second tank. 4. The pipe according to claim 1, further comprising an inflow control valve for controlling the flow of edible oil from the first tank to the second tank. An edible oil purification device according to claim 1. 5. The filter according to claim 1, wherein the filter has a finer mesh than the edible oil-purifying composition, and has a first filter arranged toward the inside of the first tank, and a finer mesh than the first filter. And a second filter portion disposed toward the second tank side.
The edible oil purification device according to any one of the above. 6. The edible oil purifying apparatus according to claim 1, wherein a gap is formed between the first filter section and the second filter section. 7. The edible oil purifying apparatus according to claim 1, wherein a deodorant is provided between the first filter section and the second filter section. . 8. The second tank is provided with a filter for dividing the second tank into upper and lower parts and filtering an impurity component in the edible oil introduced into the second tank. The edible oil purification device according to any one of claims 1 to 7. 9. The apparatus according to claim 8, wherein said negative pressure regulating valve is provided corresponding to each of an upper chamber and a lower chamber partitioned by said filter provided in said second tank. Edible oil purification equipment. 10. The edible oil purification apparatus according to claim 1, wherein a pressure sensor for detecting a pressure in the second tank is provided in the second tank. apparatus.