CN111632420B - Device and process for purifying waste oil of fried food based on continuous uninterrupted mode - Google Patents
Device and process for purifying waste oil of fried food based on continuous uninterrupted mode Download PDFInfo
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- CN111632420B CN111632420B CN202010500136.4A CN202010500136A CN111632420B CN 111632420 B CN111632420 B CN 111632420B CN 202010500136 A CN202010500136 A CN 202010500136A CN 111632420 B CN111632420 B CN 111632420B
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- 239000002699 waste material Substances 0.000 title claims abstract description 50
- 235000013305 food Nutrition 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 title claims abstract description 21
- 239000003921 oil Substances 0.000 claims abstract description 337
- 238000001914 filtration Methods 0.000 claims abstract description 59
- 239000012535 impurity Substances 0.000 claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- 230000007306 turnover Effects 0.000 claims abstract description 37
- 239000008157 edible vegetable oil Substances 0.000 claims abstract description 30
- 239000007788 liquid Substances 0.000 claims description 35
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 22
- 239000003513 alkali Substances 0.000 claims description 21
- 230000009471 action Effects 0.000 claims description 15
- 239000002253 acid Substances 0.000 claims description 14
- 238000000746 purification Methods 0.000 claims description 13
- 238000005406 washing Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 11
- 238000005086 pumping Methods 0.000 claims description 11
- 238000010306 acid treatment Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 239000000344 soap Substances 0.000 claims description 7
- 239000008234 soft water Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 239000010794 food waste Substances 0.000 claims description 2
- 238000009874 alkali refining Methods 0.000 description 4
- 238000004042 decolorization Methods 0.000 description 4
- 238000004332 deodorization Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 150000003904 phospholipids Chemical class 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000008162 cooking oil Substances 0.000 description 1
- 235000021588 free fatty acids Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000000887 hydrating effect Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 235000013622 meat product Nutrition 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- -1 phospholipid compounds Chemical class 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000012719 thermal polymerization Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/12—Devices for taking out of action one or more units of multi- unit filters, e.g. for regeneration
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/08—Regeneration of the filter
- B01D2201/081—Regeneration of the filter using nozzles or suction devices
- B01D2201/082—Suction devices placed on the cake side of the filtering element
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microbiology (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Fats And Perfumes (AREA)
Abstract
The invention provides a device and a process for purifying waste oil of fried food based on a continuous uninterrupted mode, which relate to the technical field of edible oil treatment, and the device comprises: the oil inlet pipe is arranged on the shell, the first oil outlet pipe and the second oil outlet pipe are arranged on the shell, the turnover body is positioned on the shell, and the turnover mechanism is arranged on the shell; the first oil outlet pipe and the second oil outlet pipe are arranged at the oil inlet end in the shell and are provided with filtering devices; an oil suction cavity is arranged in the turnover body, a first oil suction port and a second oil suction port which are communicated with each other are respectively arranged at the two ends of the turnover body, and valve mechanisms in a normally closed state are respectively arranged at the first oil suction port and the second oil suction port; when the turning body acts, the first oil suction port is attached to the filtering device at the oil inlet end part of the first oil outlet pipe, and the valve mechanism at the position is opened, or the second oil suction port is attached to the filtering device at the oil inlet end part of the second oil outlet pipe, and the valve mechanism at the position is opened; the oil suction cavity is communicated with an external negative pressure pump pipeline. The edible waste oil after the fried food is used is subjected to high-efficiency impurity removal treatment, so that the edible waste oil is convenient to recycle.
Description
Technical Field
The invention relates to the technical field of edible oil treatment, in particular to a device and a process for purifying waste fried food oil based on a continuous uninterrupted mode.
Background
In the field of fried food processing, such as meat products, bean products and the like, during frying, cooking oil for frying food is continuously heated for hours at high temperature in the environment of coexistence of moisture, air and food residues, and grease undergoes a plurality of chemical reactions, such as: organic pigments produced by oxidation, hydrolysis, thermal decomposition and polymerization, and the like. With the prolonged frying time, the quality of the oil in sense, nutrition and efficacy is remarkably reduced. The acid value and peroxide value of the oil and fat are continuously increased, and finally the quality of the fried food cannot be ensured. Therefore, the waste edible oil needs to be recovered and purified in time, however, the conventional alkali refining method cannot meet the requirement of high standard, and the colloidal substances such as trace metals, trace soap particles, phospholipids and the like in the oil and fat cannot be effectively removed, so that the problem needs to be solved.
Disclosure of Invention
In view of the above, the present invention provides a device for purifying waste oil of fried food based on a continuous and uninterrupted manner, which can perform high-efficiency impurity removal treatment on the used edible waste oil of fried food, and the edible waste oil can be purified more thoroughly, so that the edible waste oil can be recycled and reused conveniently.
To achieve the above objects, in a first aspect, the present invention provides an apparatus for purifying waste oil of fried food based on a continuous uninterrupted manner, comprising: the oil outlet pipe is communicated with the first oil outlet pipe and the second oil outlet pipe;
the first oil outlet pipe and the second oil outlet pipe are provided with filtering devices at the oil inlet ends in the shell;
an oil suction cavity is arranged in the turnover body, a first oil suction port and a second oil suction port which are communicated with each other are respectively arranged at the two ends of the turnover body, and valve mechanisms in a normally closed state are respectively arranged at the first oil suction port and the second oil suction port; when the turning body acts, the first oil suction port is attached to the filtering device at the oil inlet end part of the first oil outlet pipe, and the valve mechanism at the position is opened, or the second oil suction port is attached to the filtering device at the oil inlet end part of the second oil outlet pipe, and the valve mechanism at the position is opened; the oil suction cavity is communicated with an external negative pressure pump pipeline.
Furthermore, the valve mechanism comprises a movable plug positioned at the first oil suction port or the second oil suction port, an oil passing channel is arranged on the plug, when the first oil suction port is attached to the filtering device at the oil inlet end part of the first oil outlet pipe, the plug at the first oil suction port moves under the extrusion action, and the oil suction cavity is communicated with the filtering device through the oil passing channel at the first oil suction port; or when the second oil suction port is attached to the filtering device at the oil inlet end part of the second oil outlet pipe, the plug at the second oil suction port moves under the extrusion action, and the oil suction cavity is communicated with the filtering device through the oil passage at the second oil suction port.
Furthermore, the filtering device is a filter screen, and the periphery of the filtering device is provided with a covered edge.
Furthermore, the end part of the first oil suction port is provided with an end face sealing element matched with the filtering device at the oil inlet end part of the first oil outlet pipe, and the end part of the second oil suction port is also provided with an end face sealing element matched with the filtering device at the oil inlet end part of the second oil outlet pipe.
Furthermore, the oil inlet ports in the shell on the first oil outlet pipe and the second oil outlet pipe are symmetrically arranged, and a turnover body capable of deflecting towards the two ports is arranged between the oil inlet ports; the turnover mechanism comprises a rocker and a telescopic rod, wherein the rocker is positioned on the turnover body and penetrates through the shell to the outside, the rod part of the rocker is arranged on the shell through a rotating shaft, and one end of the rocker, which is positioned on the shell, is hinged with the telescopic end of the telescopic rod.
Furthermore, a sealing sleeve is arranged at the position where the rocker penetrates through the shell.
Furthermore, an oil outlet nozzle is arranged on the rocker, and a flow passage for communicating the oil outlet nozzle with the oil suction cavity is arranged in the rocker.
Furthermore, a compression spring is arranged between the two plugs.
On the other hand, the invention also provides a process for purifying the waste fried food oil based on the continuous and uninterrupted mode, the device for purifying the waste fried food oil based on the continuous and uninterrupted mode is adopted for continuous and uninterrupted purification treatment, and the process comprises the following steps:
s1, preheating and acid treatment: preheating the waste edible oil with solid impurity particles filtered out to 70-80 ℃, pumping the waste edible oil into a reaction tank for heat preservation, and adding edible phosphoric acid accounting for 0.05-0.2% of the oil by weight while stirring to obtain acid treatment mixed oil;
s2, rapidly cooling and condensing impurities: rapidly reducing the acid-treated mixed oil liquid (within 60 min) treated by S1 to 30-40 ℃, adding edible-grade alkali liquid with the concentration of 20-25% according to the acid value to be reduced, and reacting for 8-15 min to condense the impurities to form flocculent impurities to obtain alkali-treated mixed oil liquid; the calculation method of the adding amount of the edible alkali can be that the adding amount of the alkali liquor is equal to the weight of the waste edible oil, the acid value to be reduced is multiplied by 0.713 plus the excess alkali amount (the excess alkali amount is 2-6 per mill of the weight of the waste edible oil, and the adding amount is judged according to the amount of impurities in the waste edible oil).
S3, continuous and uninterrupted purification treatment: pumping the alkali treatment mixed oil liquid treated by the S2 into an oil inlet pipe, and collecting flocculent impurity bodies when the mixed oil liquid flows through the filtering devices on the first oil outlet pipe and the second oil outlet pipe respectively; meanwhile, when the turnover body is alternatively attached to the filtering devices on the first oil outlet pipe and the second oil outlet pipe, under the action of a negative pressure pump, the flocculent impurities adhered to the filtering devices flow through the first oil suction port and the second oil suction port, the valve mechanism is used for discharging and collecting oil after the oil suction cavity, the edible oil liquid after soap stripping flows out of the first oil outlet pipe and the second oil outlet pipe is pumped into a water washing tank, the temperature is raised to 70-80 ℃, and 0.5% -1% of soft water is added into the edible oil liquid for water washing.
Further, the concentration of food grade phosphoric acid in the S1 was 85%.
Compared with the prior art, the invention has the beneficial effects that: the edible waste oil after the fried food is used is subjected to high-efficiency impurity removal treatment, so that the purification is thorough, the edible waste oil is convenient to recycle, and the safety of the fried food is ensured.
1. When the turnover body is not in extrusion fit with the filtering device, the valve mechanism is in a closed state to prevent oil from entering the oil suction cavity, when the turnover body is in extrusion fit with the filtering device at one oil outlet pipe, the valve mechanism at the position is opened to remove and treat the bulk particles on the filtering device at the end, and the filtering device at the other oil outlet pipe is subjected to filtering treatment, so that mutual interference is avoided alternately.
2. In the process for purifying the waste oil of fried food based on the continuous uninterrupted mode, the waste edible oil is preheated in the first step, and then edible-grade phosphoric acid is added to play roles in hydrating and removing calcium, magnesium and phospholipid compounds, so that the residual soap content and the phospholipid content in the subsequent treatment process are effectively reduced; secondly, after the mixed solution is rapidly cooled, alkali liquor is added simultaneously to be in full contact with and react with free fatty acid, so that colloid forms larger floccules, the filtering and separation in the next step are facilitated, and the rapid cooling can also greatly reduce the saponification probability of neutral oil, so that the refining consumption is lower, the refining yield is higher, the quality is better, the color is light and the like; and thirdly, the device for purifying the waste oil of the fried food based on the continuous and uninterrupted mode is used for alternately removing the flocculent impurity bodies, so that the problem of no pipe blockage is solved, and the efficient edible oil purification treatment effect is ensured.
Drawings
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1A;
FIG. 3 is an enlarged view of a portion of FIG. 2 at B according to the present invention;
FIG. 4 is a schematic side view of the structure of FIG. 1 according to the present invention.
In the figure: 1. a housing; 2. an oil inlet pipe; 3. a first oil outlet pipe; 4. a second oil outlet pipe; 5. turning over the body; 51. an oil suction cavity; 52. a first oil suction port; 53. a second oil suction port; 54. a plug; 55. an oil passing channel; 56. an end face seal; 57. a rocker; 58. a telescopic rod; 59. an oil outlet nozzle; 60. a compression spring; 6. a filtration device; 7. and (5) sealing the sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1 to 4, an embodiment of the present invention provides an apparatus for purifying waste oil from fried food in a continuous and uninterrupted manner, including: the oil-gas separator comprises a shell 1, an oil inlet pipe 2, a first oil outlet pipe 3, a second oil outlet pipe 4, a turnover body 5 and a turnover mechanism, wherein the oil inlet pipe, the first oil outlet pipe 3 and the second oil outlet pipe 4 are communicated with the interior of the shell 1; the oil inlet pipe 2, the first oil outlet pipe 3 and the second oil outlet pipe 4 are distributed in a Y shape and can be hollow round pipes.
The first oil outlet pipe 3 and the second oil outlet pipe 4 are positioned at the oil inlet ends in the shell 1 and are provided with a filtering device 6; may be a filter screen.
An oil suction cavity 51 is arranged in the turnover body 5, a first oil suction port 52 and a second oil suction port 53 which are communicated with each other are respectively arranged at the two ends of the turnover body, and valve mechanisms in a normally closed state are respectively arranged at the first oil suction port 52 and the second oil suction port 53; when the turnover body 5 acts, the first oil suction port 52 is attached to the filtering device 6 at the oil inlet end of the first oil outlet pipe 3, and the valve mechanism at the position is opened, or the second oil suction port 53 is attached to the filtering device 6 at the oil inlet end of the second oil outlet pipe 4, and the valve mechanism at the position is opened; the oil suction cavity 51 is communicated with an external negative pressure pump pipeline.
Specifically, the oil inlet pipe 2 is used for introducing waste oil containing particulate matters, when the waste oil passes through the first oil outlet pipe 3 and the second oil outlet pipe 4, the oil after fine filtration is subjected to next treatment under the action of the filter device 6, the particulate matters are left on the filter device 6, then the turnover mechanism drives the turnover body 5 to reciprocate, after the first oil suction port 52 is attached to the filter device 6 at the oil inlet end of the first oil outlet pipe 3, the valve mechanism at the position is opened, namely, the oil can flow back into the first oil suction port 52 and the oil suction cavity 51 from the first oil outlet pipe 3, under the action of the negative pressure pump, the oil at the position of the first oil suction port 52 recoils the particulate matters adhered to the filter device 6, the particulate matters are sucked into the oil suction cavity 51 and then discharged and collected, the turnover mechanism changes direction, so that the turnover body 5 changes direction, and after the second oil suction port 53 is attached to the filter device 6 at the oil inlet end of the second oil outlet pipe 4, the valve mechanism at the position is opened, in the same way, the particulate matter adhered to the filtering device 6 is sucked into the oil suction cavity 51 and then discharged and collected, and the two oil outlet pipes are alternately cleaned of flocculent impurities, so that the problem of pipe blockage is solved, and the efficient purification treatment effect is ensured.
Preferably, the valve mechanism includes a plug 54 located at the first oil suction port 52 or the second oil suction port 53 and movable, and the structure of the valve mechanism is similar to that of an end cover, the first oil suction port 52 and the second oil suction port 53 can be made into an annular inner cylinder, the plug 54 slides on the inner wall of the annular inner cylinder, a sealing ring can be arranged between the plug 54 and the inner wall of the annular inner cylinder, an oil passage 55 is arranged on the plug 54, when the first oil suction port 52 is attached to the filtering device 6 at the oil inlet end of the first oil outlet pipe 3, the plug 54 at the first oil suction port 52 moves along the inner wall of the annular inner cylinder under the extrusion action, and the oil suction cavity 51 is communicated with the filtering device 6 through the oil passage 55 at the first oil suction port 52; or when the second suction opening 53 is engaged with the filtering device 6 at the oil inlet end of the second oil outlet pipe 4, the plug 54 at the second suction opening 53 moves under the pressing action, and the suction cavity 51 is communicated with the filtering device 6 through the oil passage 55 at the second suction opening 53.
When the turning body 5 is not pressed and attached to the filtering device 6, the valve mechanism is in a closed state to prevent oil from entering the oil suction cavity 51, when the turning body 5 is pressed and attached to the filtering device 6 at one of the oil outlet pipes, the valve mechanism at the position is opened to remove the bulk particles on the filtering device 6 at the end, and the filtering device at the other oil outlet pipe is alternately subjected to mutual noninterference.
Preferably, the filtering device 6 is a filtering net, and the periphery of the filtering net is provided with a wrapping edge, which can be a stainless steel pressing wrapping edge. The end of the plug 54 may be provided as an annular flange for pressing against the flange.
Preferably, the first oil suction port 52 is provided at its end with a face seal 56 for cooperation with the filter device 6 at the oil inlet end of the first oil outlet pipe 3, and the second oil suction port 53 is also provided at its end with a face seal 56 for cooperation with the filter device 6 at the oil inlet end of the second oil outlet pipe 4. Specifically, end face seal 56 is annular rubber circle, can set up cyclic annular recess at the tip of first oil pipe 3, second oil pipe 4, and sets up the cyclic annular arch of matched with it at end face seal 56, when the turning body 5 leans on tightly with the oil feed tip of first oil pipe 3, second oil pipe 4, end face seal 56 compresses tightly earlier and forms closed space on its oil feed terminal surface, then continues along with the extruded going on, and oil absorption passageway just can be opened to valve mechanism.
Preferably, the oil inlet ports of the first oil outlet pipe 3 and the second oil outlet pipe 4 in the shell 1 are symmetrically arranged, and a turnover body 5 capable of deflecting towards the two ports is arranged between the oil inlet ports; the turnover mechanism comprises a rocker 57 and a telescopic rod 58, wherein the rocker 57 is positioned on the turnover body 5 and penetrates to the outside of the shell 1, the rod part of the rocker 57 is installed on the shell 1 through a rotating shaft, and one end of the rocker 57, which is positioned on the shell 1, is hinged with the telescopic end of the telescopic rod 58.
Preferably, the rocker 57 is provided with a sealing sleeve 7 extending through the housing 1.
Preferably, the rocker 57 is provided with an oil outlet nozzle 59, and a flow passage for communicating the oil outlet nozzle 59 with the oil suction chamber 51 is arranged inside the rocker.
Preferably, a compression spring 60 is disposed between the two plugs 54. The compression spring 60 is used to expand the two plugs 54 outwards, so that when the suction opening is not compressed by the filter device, the plugs 54 are reset to return the valve mechanism to the closed state.
On the other hand, the invention also provides a process for purifying the waste fried food oil based on the continuous and uninterrupted mode, which adopts the device for purifying the waste fried food oil based on the continuous and uninterrupted mode to carry out continuous and uninterrupted purification treatment:
example two
A process for purifying waste oil of fried food based on a continuous uninterrupted mode comprises the following steps:
s1, preheating and acid treatment: preheating the waste edible oil with solid impurity particles filtered out to 70 ℃, pumping the waste edible oil into a reaction tank for heat preservation, and adding edible-grade phosphoric acid accounting for 0.05 percent of the weight of the oil while stirring, wherein the concentration of the edible-grade phosphoric acid is 85 percent, so as to obtain acid treatment mixed oil;
s2, rapidly cooling and condensing impurities: rapidly cooling the acid-treated mixed oil liquid treated by the S1 to 30 ℃, adding edible-grade alkali liquor with the concentration of 20% according to the acid value to be reduced, and reacting for 8min to condense the impurities to form flocculent impurities to obtain alkali-treated mixed oil liquid;
s3, continuous and uninterrupted purification treatment: pumping the alkali treatment mixed oil liquid treated by the S2 into an oil inlet pipe, and collecting flocculent impurity bodies when the mixed oil liquid flows through the filtering devices on the first oil outlet pipe and the second oil outlet pipe respectively; meanwhile, when the turnover body is alternatively attached to the filtering devices on the first oil outlet pipe and the second oil outlet pipe, under the action of a negative pressure pump, the flocculent impurities adhered to the filtering devices flow through the first oil suction port and the second oil suction port, the valve mechanism is used for discharging and collecting oil after the oil suction cavity, the edible oil liquid after soap stripping flows out of the first oil outlet pipe and the second oil outlet pipe is pumped into a water washing tank, the temperature is raised to 70 ℃, and 0.5% of soft water is added into the edible oil liquid for water washing, so that the next decolorization and deodorization treatment can be conveniently carried out.
EXAMPLE III
A process for purifying waste oil of fried food based on a continuous uninterrupted mode comprises the following steps:
s1, preheating and acid treatment: preheating the waste edible oil with solid impurity particles filtered to 75 ℃, pumping the waste edible oil into a reaction tank for heat preservation, and adding edible-grade phosphoric acid accounting for 0.12 percent of the oil by weight while stirring, wherein the concentration of the edible-grade phosphoric acid is 85 percent, so as to obtain acid treatment mixed oil liquid;
s2, rapidly cooling and condensing impurities: rapidly cooling the acid-treated mixed oil liquid treated by the S1 to 35 ℃, adding 22% edible-grade alkali liquid into the acid-treated mixed oil liquid according to the acid value to be reduced, and reacting for 12min to condense the impurities into flocculent impurities to obtain alkali-treated mixed oil liquid;
s3, continuous and uninterrupted purification treatment: pumping the alkali treatment mixed oil liquid treated by the S2 into an oil inlet pipe, and collecting flocculent impurity bodies when the mixed oil liquid flows through the filtering devices on the first oil outlet pipe and the second oil outlet pipe respectively; meanwhile, when the turnover body is alternatively attached to the filtering devices on the first oil outlet pipe and the second oil outlet pipe, under the action of a negative pressure pump, the flocculent impurities adhered to the filtering devices flow through the first oil suction port and the second oil suction port, the valve mechanism is used for discharging and collecting oil after the oil suction cavity, the edible oil liquid after soap stripping flows out of the first oil outlet pipe and the second oil outlet pipe is pumped into a water washing tank, the temperature is raised to 75 ℃, and 0.8% of soft water is added into the edible oil liquid for water washing, so that the next decolorization and deodorization treatment can be conveniently carried out.
Example four
A process for purifying waste oil of fried food based on a continuous uninterrupted mode comprises the following steps:
s1, preheating and acid treatment: preheating the waste edible oil with solid impurity particles filtered to 80 ℃, pumping the waste edible oil into a reaction tank for heat preservation, adding edible phosphoric acid accounting for 0.2 percent of the specific gravity of the oil while stirring, wherein the concentration of the edible phosphoric acid is 85 percent, and obtaining acid treatment mixed oil;
s2, rapidly cooling and condensing impurities: rapidly cooling the acid-treated mixed oil liquid treated by the S1 to 40 ℃, adding 25% edible-grade alkali liquor according to the acid value to be reduced, reacting for 15min, and condensing impurities to form flocculent impurities to obtain alkali-treated mixed oil liquid;
s3, continuous and uninterrupted purification treatment: pumping the alkali treatment mixed oil liquid treated by the S2 into an oil inlet pipe, and collecting flocculent impurity bodies when the mixed oil liquid flows through the filtering devices on the first oil outlet pipe and the second oil outlet pipe respectively; meanwhile, when the turnover body is alternatively attached to the filtering devices on the first oil outlet pipe and the second oil outlet pipe, under the action of a negative pressure pump, the flocculent impurities adhered to the filtering devices flow through the first oil suction port and the second oil suction port, the valve mechanism discharges and collects oil after the oil suction cavity, the edible oil liquid after soap stripping flows out of the first oil outlet pipe and the second oil outlet pipe is pumped into a water washing tank, the temperature is raised to 80 ℃, 1% of soft water is added into the edible oil liquid for water washing, and the next decolorization and deodorization treatment can be conveniently carried out.
Comparative example 1
The waste edible oil of the fried food is treated by a conventional alkali refining process, and the approximate process parameters are as follows: adding waste edible oil into an alkali refining tank, stirring and heating to about 20-40 ℃, adding 28% alkali liquor according to the acid value to be reduced for deacidification, stirring for 30min, stirring at a low speed, starting rapid temperature rise which is not less than 1 ℃/min, spraying isothermal soft water accounting for 0.5% of the weight of the oil when the temperature rises to 75-80 ℃, stopping heating and stirring after 5min, standing and settling for 3-4 h, and discharging soapstock; pumping the oil into a water washing tank, rapidly stirring and heating to about 80 ℃, adding soft water with the weight of 1% of the oil for washing, carrying out oil-water separation after the reaction time is 20min, and carrying out decolorization and deodorization treatment. The measured data are compared as shown in the following table:
from the above table, it is obvious that the removal rate of phospholipid is improved by 42% and the residue of soapstock is reduced by 40% compared with the conventional alkali refining and water washing treatment process, so that the edible waste oil used by the fried food is subjected to high-efficiency impurity removal treatment by the process, the purification is thorough, the edible waste oil is convenient to recycle, and the safety of the fried food is ensured.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Claims (6)
1. A device based on fried food waste oil of continuous incessant mode purification, its characterized in that includes: the oil pump comprises a shell (1), an oil inlet pipe (2), a first oil outlet pipe (3), a second oil outlet pipe (4) which are communicated with the inside of the shell (1), a turnover body (5) which is movably arranged in the shell (1), and a turnover mechanism which is used for driving the turnover body (5) to move;
the first oil outlet pipe (3) and the second oil outlet pipe (4) are provided with a filtering device (6) at the oil inlet end in the shell (1);
an oil suction cavity (51) is arranged in the turnover body (5), a first oil suction port (52) and a second oil suction port (53) which are communicated with each other are respectively arranged at the two ends of the turnover body, and valve mechanisms in a normally-closed state are respectively arranged at the first oil suction port (52) and the second oil suction port (53); when the turnover body (5) acts, the first oil suction port (52) is attached to the filtering device (6) at the oil inlet end part of the first oil outlet pipe (3), and the valve mechanism at the oil inlet end part is opened, or the second oil suction port (53) is attached to the filtering device (6) at the oil inlet end part of the second oil outlet pipe (4), and the valve mechanism at the oil inlet end part is opened; the oil suction cavity (51) is communicated with an external negative pressure pump pipeline;
the valve mechanism comprises a movable plug (54) positioned at a first oil suction port (52) or a second oil suction port (53), an oil passing channel (55) is arranged on the plug (54), when the first oil suction port (52) is attached to the filtering device (6) at the oil inlet end part of the first oil outlet pipe (3), the plug (54) at the first oil suction port (52) moves under the extrusion effect, and the oil suction cavity (51) is communicated with the filtering device (6) through the oil passing channel (55) at the first oil suction port (52); or when the second oil suction opening (53) is jointed with the filtering device (6) at the oil inlet end part of the second oil outlet pipe (4), under the squeezing action, the plug (54) at the second oil suction opening (53) moves, and the oil suction cavity (51) is communicated with the filtering device (6) through the oil passage (55) at the second oil suction opening (53);
a compression spring (60) is arranged between the two plugs (54);
the oil inlet ports of the first oil outlet pipe (3) and the second oil outlet pipe (4) which are positioned in the shell (1) are symmetrically arranged, and a turnover body (5) which can deflect towards the two ports is arranged between the oil inlet ports; the turnover mechanism comprises a rocker (57) and a telescopic rod (58), wherein the rocker (57) is positioned on the turnover body (5) and penetrates to the outside of the shell (1), the rod part of the rocker (57) is installed on the shell (1) through a rotating shaft, and one end of the rocker (57) positioned on the shell (1) is hinged with the telescopic end of the telescopic rod (58);
an oil outlet nozzle (59) is arranged on the rocker (57), and a flow passage for communicating the oil outlet nozzle (59) with the oil suction cavity (51) is arranged in the rocker.
2. The apparatus for purifying waste oil from fried foods on a continuous basis according to claim 1, wherein said filter means (6) is a filter net and is provided with a covered edge at its periphery.
3. Device for purifying waste oil from fried food products on a continuous and uninterrupted basis as claimed in claim 1, characterized in that the first oil suction opening (52) is provided at its end with a face seal (56) cooperating with the filter means (6) of the oil inlet end of the first oil outlet pipe (3), and the second oil suction opening (53) is also provided at its end with a face seal (56) cooperating with the filter means (6) of the oil inlet end of the second oil outlet pipe (4).
4. Device for purifying waste fried food oil on a continuous and uninterrupted basis as claimed in claim 1, characterized in that the rocker (57) is provided with a sealing sleeve (7) throughout the casing (1).
5. A process for purifying waste fried food oil based on a continuous uninterrupted manner, which is characterized in that the device for purifying the waste fried food oil based on the continuous uninterrupted manner of any one of claims 1 to 4 is adopted for continuous uninterrupted purification treatment, and comprises the following steps:
s1, preheating and acid treatment: preheating the waste edible oil with solid impurity particles filtered out to 70-80 ℃, pumping the waste edible oil into a reaction tank for heat preservation, and adding edible phosphoric acid accounting for 0.05-0.2% of the oil by weight while stirring to obtain acid treatment mixed oil;
s2, rapidly cooling and condensing impurities: rapidly reducing the acid-treated mixed oil liquid treated by S1 to 30-40 ℃, adding edible-grade alkali liquid with the concentration of 20-25% according to the acid value to be reduced, and reacting for 8-15 min to condense the impurities to form flocculent impurities, thereby obtaining the alkali-treated mixed oil liquid;
s3, continuous and uninterrupted purification treatment: pumping the alkali treatment mixed oil liquid treated by the S2 into an oil inlet pipe, and collecting flocculent impurity bodies when the mixed oil liquid flows through the filtering devices on the first oil outlet pipe and the second oil outlet pipe respectively; meanwhile, when the turnover body is alternatively attached to the filtering devices on the first oil outlet pipe and the second oil outlet pipe, under the action of a negative pressure pump, the flocculent impurities adhered to the filtering devices flow through the first oil suction port and the second oil suction port, the valve mechanism is used for discharging and collecting oil after the oil suction cavity, the edible oil liquid after the soap is stripped from the first oil outlet pipe and the second oil outlet pipe is pumped into a water washing tank, the temperature is raised to 70-80 ℃, and 0.5-1% of soft water is added into the edible oil liquid for water washing.
6. The process for purifying waste fry oil on a continuous, uninterrupted basis as claimed in claim 5, wherein the concentration of food grade phosphoric acid in S1 is 85%.
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