Device and method for removing aflatoxin in edible oil

Abstract

The invention relates to the technical field of edible oil filtering, in particular to a device and method for removing aflatoxin in edible oil, the device comprises a driving mechanism, an oil inlet mechanism, a filtering mechanism and an oil outlet mechanism, the driving mechanism and the filtering mechanism are located at the top of a mounting rack, and an oil inlet pump of the oil inlet mechanism is located at the lower part of the mounting rack; a driving air cylinder of the driving mechanism is connected with a first positioning plate of the filtering mechanism, a second positioning plate is arranged on the opposite side of the first positioning plate, a filtering assembly and a removing assembly are arranged between the first positioning plate and the second positioning plate, and the filtering assembly is communicated with the two sides of the removing assembly. According to the device and method for removing aflatoxin in edible oil, the filtering assemblies are arranged on the two sides of the removing assembly, the two steps of aflatoxin removing and impurity filtering are completed at the same time, the working efficiency of the removing device is improved, and the aflatoxin removing rate is increased through compound use of the adsorbent.

Description

Technical Field

[0001] The invention relates to the technical field of edible oil filtration, and in particular to a device and method for removing aflatoxin in edible oil. Background Art

[0002] Regarding the contamination of peanuts and their products by aflatoxin, people have been exploring methods that can effectively remove toxins. Peanuts are the most contaminated oil by aflatoxin. A large number of studies have found that Aspergillus flavus can easily grow before and after peanut planting and during storage after harvest, causing aflatoxin to easily contaminate peanut oil and affect the quality of peanut oil products. The current detoxification measures have their own advantages and disadvantages. According to different mechanisms of action, they can generally be divided into mechanical removal, physical removal, chemical removal, and biological removal. Activated carbon can form a stable complex with mycotoxins, but activated carbon will make peanut oil black and increase processing costs. Therefore, there is an urgent need for a method to improve the removal rate of aflatoxin in peanut oil. Summary of the invention

[0003] The purpose of the present invention is to provide a device and method for removing aflatoxin in edible oil. Filter components are provided on both sides of the removal component, and the two steps of removing aflatoxin and filtering impurities are completed at the same time, thereby improving the working efficiency of the removal device. The composite use of adsorbents increases the removal rate of aflatoxin.

[0004] To achieve the above-mentioned objectives, the present invention provides a device for removing aflatoxin in edible oil, comprising a driving mechanism, an oil inlet mechanism, a filtering mechanism and an oil outlet mechanism, the driving mechanism and the filtering mechanism are located on the top of a mounting frame, the oil inlet pump of the oil inlet mechanism is located at the bottom of the mounting frame, the driving cylinder of the driving mechanism is connected to a first positioning plate of the filtering mechanism, a second positioning plate is provided on the opposite side of the first positioning plate, a filtering assembly and a removal assembly are provided between the first positioning plate and the second positioning plate, and the filtering assembly is connected to both sides of the removal assembly.

[0005] Preferably, the oil inlet pump of the oil inlet mechanism is connected to the first oil inlet pipe and the second oil inlet pipe respectively, the first oil inlet pipe is located at one end of the top of the filtering assembly and the removal assembly, the second oil inlet pipe is located on the opposite side of the first oil inlet pipe, the first oil inlet pipe and the second oil inlet pipe are respectively connected to both sides of the top of the removal assembly, and both sides of the removal assembly are connected to the filtering assembly.

[0006] Preferably, a first oil inlet and a second oil inlet are provided at the top of the removal chamber of the removal component, and a plurality of first oil guide plates and second oil guide plates are provided in sequence from top to bottom in the removal chamber, the first oil guide plates and the second oil guide plates are inclined in opposite directions, and the removal chamber is filled with an adsorbent between the first oil guide plates and the second oil guide plates.

[0007] Preferably, the filter chamber of the filter assembly is provided with a trapezoidal filter hole on the side close to the removal chamber, a composite filter material is provided between the removal chamber and the filter chamber, the side of the trapezoidal filter hole away from the removal chamber is connected to the transition chamber, the side of the transition chamber away from the trapezoidal filter hole is connected to the circular filter hole, and the side of the circular filter hole away from the transition chamber is connected to the oil outlet chamber.

[0008] Preferably, a first oil outlet and a second oil outlet are provided at the bottom of the oil outlet cavity of the oil outlet mechanism, and an oil storage cavity is provided below the first oil outlet and the second oil outlet, and the oil storage cavity is located in the middle of the mounting frame.

[0009] Preferably, the first limit rod and the second limit rod of the mounting frame are connected to the first mounting plate and the second mounting plate at both ends respectively, filter fixing hooks are provided on both sides of the filter frame of the filter assembly, and removal fixing hooks are provided on both sides of the removal frame of the removal assembly, and the filter fixing hooks and the removal fixing hooks are slidably connected to the first limit rod and the second limit rod respectively.

[0010] Preferably, a driving cylinder is provided on one side of the first mounting plate away from the first positioning plate, and sliding hooks are protrudingly provided on both sides of the upper portion of the first positioning plate, and the sliding hooks are slidably connected to the first limiting rod and the second limiting rod respectively.

[0011] Preferably, the first oil inlet pipe and the second oil inlet pipe are both provided with pressure gauges, and the first oil inlet pipe and the second oil inlet pipe are connected to the oil inlet pump via a three-way connector.

[0012] The method of using the above-mentioned aflatoxin removal device in edible oil comprises the following steps: S1, the oil feed pump pumps the crude oil into the first oil feed pipe and / or the second oil feed pipe, and the crude oil enters the removal chamber through the first oil inlet and / or the second oil inlet; S2, the crude oil passes through the adsorbent from top to bottom, and enters the filter chambers on both sides under the guidance of the first oil guide plate and the second oil guide plate; S3, the crude oil is filtered in the filter cavity by the composite filter material, the trapezoidal filter holes and the circular filter holes in sequence, and the filtered edible oil enters the oil storage cavity through the first oil outlet and the second oil outlet.

[0013] Preferably, the adsorbent in S2 includes one or more of activated clay, nano-silica, nano-clay, sodium alginate / chitosan / montmorillonite-horseradish peroxidase and zeolite molecular sieve.

[0014] Therefore, the present invention adopts a device and method for removing aflatoxin in edible oil with the above-mentioned structure. Filter components are provided on both sides of the removal component, and the two steps of removing aflatoxin and filtering impurities are completed at the same time, thereby improving the working efficiency of the removal device. The compound use of adsorbents increases the removal rate of aflatoxin.

[0015] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of a device for removing aflatoxin in edible oil according to the present invention; Figure 2 is a side cross-sectional view of a removal component and a filter component of the present invention; Figure 3 The present invention Figure 2 Enlarged view of point A in .

[0017] Reference numerals: 1. Mounting frame; 11. First limiting rod; 12. Second limiting rod; 13. First positioning plate; 14. Second positioning plate; 15. Sliding hook; 2. Oil inlet mechanism; 21. Oil inlet pump; 22. First oil inlet pipe; 23. Second oil inlet pipe; 3. Filter mechanism; 31. Removal chamber; 32. First oil inlet port; 33. First oil guide plate; 34. Second oil guide plate; 35. Adsorbent; 36. Filter chamber; 37. Trapezoidal filter hole; 38. Circular filter hole; 39. Transition chamber; 310. Composite filter material; 311. Filter fixing hook; 312. Removal fixing hook; 4. Oil outlet mechanism; 41. First oil outlet port; 42. Oil outlet chamber; 5. Oil storage chamber; 6. Driving cylinder. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments. Unless otherwise defined, the technical terms or scientific terms used in the present invention should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs. The above-mentioned features or features mentioned in the specific examples mentioned in the present invention can be combined arbitrarily, and these specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0019] Example 1 like Figure 1 As shown, the present invention provides a device for removing aflatoxin in edible oil, comprising a driving mechanism, an oil inlet mechanism 2, a filtering mechanism 3 and an oil outlet mechanism 4. The driving mechanism and the filtering mechanism 3 are located at the top of the mounting frame 1, and the oil inlet pump 21 of the oil inlet mechanism 2 is located at the bottom of the mounting frame 1. The driving cylinder 6 of the driving mechanism is connected to the first positioning plate 13 of the filtering mechanism 3, and a second positioning plate 14 is provided on the opposite side of the first positioning plate 13. A filtering assembly and a removal assembly are provided between the first positioning plate 13 and the second positioning plate 14, and the filtering assembly is connected to both sides of the removal assembly.

[0020] The oil inlet mechanism 2 pumps the crude oil into the filtering mechanism 3, which filters and removes impurities and aflatoxin in the crude oil, and the filtered edible oil enters the oil storage chamber 5 through the oil outlet mechanism 4. The driving mechanism moves the first positioning plate 13 toward the second positioning plate 14, thereby clamping the filtering assembly and the removing assembly of the filtering mechanism 3, thereby ensuring smooth filtering of the crude oil.

[0021] The oil inlet pump 21 of the oil inlet mechanism 2 is connected to the first oil inlet pipe 22 and the second oil inlet pipe 23 respectively. The first oil inlet pipe 22 is located at one end of the top of the filter assembly and the removal assembly, and the second oil inlet pipe 23 is located on the opposite side of the first oil inlet pipe 22. The ends of the first oil inlet pipe 22 and the second oil inlet pipe 23 are in contact with the first positioning plate 13. The first positioning plate 13 stops moving after contacting the first oil inlet pipe 22 and the second oil inlet pipe 23. At this time, the removal assembly and the filter assembly are fixed between the first positioning plate 13 and the second positioning plate 14. The oil outlet holes evenly arranged on the first oil inlet pipe 22 and the second oil inlet pipe 23 are respectively connected to the top two sides of the removal assembly, and both sides of the removal assembly are connected to the filter assembly. The oil inlet pump 21 pumps the crude oil into the first oil inlet pipe 22 and / or the second oil inlet pipe 23, and the crude oil enters the removal assembly to remove aflatoxin, and then enters the filter assembly to remove small particles of impurities, cellulose, sediment and other substances.

[0022] like Figure 2-Figure 3 As shown, the top of the removal chamber 31 of the removal assembly is provided with a first oil inlet 32 ​​and a second oil inlet, and a plurality of first oil guide plates 33 and second oil guide plates 34 are sequentially provided in the removal chamber 31 from top to bottom. The first oil guide plates 33 and the second oil guide plates 34 are inclined in opposite directions, and the removal chamber 31 is filled with an adsorbent 35 between the first oil guide plates 33 and the second oil guide plates 34.

[0023] The crude oil enters the top of the removal chamber 31 through the first oil inlet 32 ​​and the second oil inlet. After entering the removal chamber 31, the crude oil moves from top to bottom. The adsorbent 35 in the removal chamber 31 removes aflatoxin in the crude oil and removes large particles of impurities. The first oil guide plate 33 and the second oil guide plate 34 are arranged to guide the crude oil in the removal chamber 31 to the filter components on different sides. At the same time, the first oil guide plate 33 and the second oil guide plate 34 are arranged in an interlaced manner, which limits the flow rate of the crude oil in the removal chamber 31, prolongs the residence time of the crude oil in the removal chamber 31, increases the removal rate of aflatoxin, and improves the quality of the finished edible oil. The side plate of the removal component is detachable, which is convenient for replacing the adsorbent 35 in the removal chamber 31.

[0024] The filter chamber 36 of the filter assembly is provided with a trapezoidal filter hole 37 on the side close to the removal chamber 31, and a composite filter material 310 is provided between the removal chamber 31 and the filter chamber 36. The side of the trapezoidal filter hole 37 away from the removal chamber 31 is connected to the transition chamber 39, the side of the transition chamber 39 away from the trapezoidal filter hole 37 is connected to the circular filter hole 38, and the side of the circular filter hole 38 away from the transition chamber 39 is connected to the oil outlet chamber 42.

[0025] During the filtering process of the filtration chamber 36, the crude oil passes through the composite filter material 310, the trapezoidal filter hole 37 and the circular filter hole 38 in turn, and the small particle impurities, cellulose and sediment in the crude oil are intercepted, thereby improving the quality of the finished edible oil. Among them, the upper bottom edge of the trapezoidal filter hole 37 is close to the circular filter hole 38, and its lower bottom edge is close to the removal chamber 31. The diameter of the circular filter hole 38 is smaller than the length of the upper bottom edge of the trapezoidal filter hole 37. The setting of the transition chamber 39 provides storage space for the edible oil filtered out of the trapezoidal filter hole 37, ensuring that the edible oil flowing out of the trapezoidal filter hole 37 can smoothly enter the circular filter hole 38 for re-filtration. The composite filter material 310 is composed of multiple layers of filter materials of different materials or different pore sizes, which further realizes graded filtration, improves the filtration efficiency and also prolongs the service life of the filter component.

[0026] The bottom of the oil outlet cavity 42 of the oil outlet mechanism 4 is provided with a first oil outlet 41 and a second oil outlet, and below the first oil outlet 41 and the second oil outlet is an oil storage cavity 5, which is located in the middle of the mounting frame 1. The oil outlet cavity 42 allows the filtered edible oil to flow out through the first oil outlet 41 and the second oil outlet and fall into the oil storage cavity 5, and the oil storage cavity 5 temporarily stores the filtered edible oil, and then uniformly enters the next device for further processing.

[0027] The first limiting rod 11 and the second limiting rod 12 of the mounting frame 1 are connected to the first mounting plate and the second mounting plate at both ends, and the filter frame of the filter assembly is provided with filter fixing hooks 311 at both sides. The removal frame of the removal assembly is provided with removal fixing hooks 312 at both sides, and the filter fixing hooks 311 and the removal fixing hooks 312 are slidably connected to the first limiting rod 11 and the second limiting rod 12 respectively.

[0028] The filter fixing hook 311 and the removal fixing hook 312 are set to hang the filter frame and the removal frame on the first limiting rod 11 and the second limiting rod 12, and the driving cylinder 6 is started to fit and connect the filter component and the removal component through the first positioning plate 13 to complete the installation of the filter mechanism 3.

[0029] A driving cylinder 6 is provided on one side of the first mounting plate away from the first positioning plate 13, and sliding hooks 15 are protrudingly provided on both sides of the upper part of the first positioning plate 13, and the sliding hooks 15 are respectively slidably connected with the first limiting rod 11 and the second limiting rod 12. The arrangement of the sliding hooks 15 enables the first positioning plate 13 to slide along the first limiting rod 11 and the second limiting rod 12, ensuring that the first positioning plate 13 smoothly drives the filter assembly and the removal assembly to move.

[0030] The first oil inlet pipe 22 and the second oil inlet pipe 23 are both provided with pressure gauges, and the first oil inlet pipe 22 and the second oil inlet pipe 23 are connected to the oil inlet pump 21 through a three-way connector. The pressure gauge is provided to monitor the pressure of the incoming oil, increase the flow rate of the crude oil in the removal chamber 31 and the filter assembly, and ensure the filtering and removal effect of the crude oil.

[0031] Example 2 The method of using the aflatoxin removal device in edible oil in Example 1 comprises the following steps: S1. The oil feed pump 21 pumps the crude oil into the first oil feed pipe 22 and / or the second oil feed pipe 23, and the crude oil enters the removal chamber 31 through the first oil inlet 32 ​​and / or the second oil inlet.

[0032] S2, the crude oil passes through the adsorbent 35 from top to bottom, and enters the filter chambers 36 on both sides under the guidance of the first oil guide plate 33 and the second oil guide plate 34.

[0033] The adsorbent 35 in S2 includes one or more of activated clay, nano-silica, nano-clay, sodium alginate / chitosan / montmorillonite-horseradish peroxidase and zeolite molecular sieve. The amount of activated clay added in the adsorbent 35 is between 0.5-1.5%, the amount of sodium alginate / chitosan / montmorillonite-horseradish peroxidase added is between 15-20%, and the rest is nano-silica and / or nano-clay, and the volume ratio of the two is 1:1-1.5.

[0034] When the hot pressed oil is cooled to near the optimal catalytic temperature of horseradish peroxidase, it enters the removal device. The activated clay has a removal rate of 78-87% for aflatoxin in edible oil, and the addition of sodium alginate / chitosan / montmorillonite-horseradish peroxidase can degrade aflatoxin that is not adsorbed by activated clay, nano-silica and / or nano-clay, thereby improving the quality of the finished edible oil.

[0035] S3, the crude oil is filtered in the filter chamber 36 by the composite filter material 310, the trapezoidal filter holes 37 and the circular filter holes 38 in sequence, and the filtered edible oil enters the oil storage chamber 5 through the first oil outlet 41 and the second oil outlet.

[0036] Therefore, the present invention adopts a device and method for removing aflatoxin in edible oil with the above-mentioned structure. Filter components are provided on both sides of the removal component, and the two steps of removing aflatoxin and filtering impurities are completed at the same time, thereby improving the working efficiency of the removal device. The compound use of adsorbents increases the removal rate of aflatoxin.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A device for removing aflatoxin from edible oil, characterized in that: It includes a driving mechanism, an oil inlet mechanism, a filtering mechanism and an oil outlet mechanism. The driving mechanism and the filtering mechanism are located on the top of the mounting frame. The oil inlet pump of the oil inlet mechanism is located at the bottom of the mounting frame. The driving cylinder of the driving mechanism is connected to the first positioning plate of the filtering mechanism. A second positioning plate is provided on the opposite side of the first positioning plate. A filtering assembly and a removal assembly are provided between the first positioning plate and the second positioning plate. The filtering assembly is connected to both sides of the removal assembly.

2. The device for removing aflatoxin from edible oil according to claim 1, characterized in that: The oil inlet pump of the oil inlet mechanism is connected to the first oil inlet pipe and the second oil inlet pipe respectively. The first oil inlet pipe is located at one end of the top of the filtering assembly and the removal assembly, and the second oil inlet pipe is located on the opposite side of the first oil inlet pipe. The first oil inlet pipe and the second oil inlet pipe are respectively connected to both sides of the top of the removal assembly, and both sides of the removal assembly are connected to the filtering assembly.

3. The device for removing aflatoxin from edible oil according to claim 2, characterized in that: A first oil inlet and a second oil inlet are provided at the top of the removal chamber of the removal component, and a plurality of first oil guide plates and second oil guide plates are provided in sequence from top to bottom in the removal chamber. The first oil guide plates and the second oil guide plates are inclined in opposite directions, and the removal chamber is filled with an adsorbent between the first oil guide plates and the second oil guide plates.

4. The device for removing aflatoxin from edible oil according to claim 3, characterized in that: The filter chamber of the filter assembly is provided with a trapezoidal filter hole on the side close to the removal chamber, a composite filter material is provided between the removal chamber and the filter chamber, the side of the trapezoidal filter hole away from the removal chamber is connected to the transition chamber, the side of the transition chamber away from the trapezoidal filter hole is connected to the circular filter hole, and the side of the circular filter hole away from the transition chamber is connected to the oil outlet chamber.

5. The device for removing aflatoxin from edible oil according to claim 4, characterized in that: The bottom of the oil outlet cavity of the oil outlet mechanism is provided with a first oil outlet and a second oil outlet, below which is an oil storage cavity, which is located in the middle of the mounting frame.

6. The device for removing aflatoxin from edible oil according to claim 5, characterized in that: The first limiting rod and the second limiting rod of the mounting frame have two ends connected to the first mounting plate and the second mounting plate respectively; filtering fixing hooks are provided on both sides of the filtering frame of the filtering assembly; and removing fixing hooks are provided on both sides of the removing frame of the removing assembly; the filtering fixing hooks and the removing fixing hooks are slidably connected to the first limiting rod and the second limiting rod respectively.

7. The device for removing aflatoxin from edible oil according to claim 6, characterized in that: A driving cylinder is provided on one side of the first mounting plate away from the first positioning plate, and sliding hooks are protrudingly provided on both sides of the upper portion of the first positioning plate, and the sliding hooks are respectively slidably connected to the first limiting rod and the second limiting rod.

8. The device for removing aflatoxin from edible oil according to claim 7, characterized in that: The first oil inlet pipe and the second oil inlet pipe are both provided with pressure gauges, and the first oil inlet pipe and the second oil inlet pipe are connected with the oil inlet pump through a three-way connector.

9. A method for using the device for removing aflatoxin from edible oil according to claim 8, characterized in that: The following steps are included: S1, the oil feed pump pumps the crude oil into the first oil feed pipe and / or the second oil feed pipe, and the crude oil enters the removal chamber through the first oil inlet and / or the second oil inlet; S2, the crude oil passes through the adsorbent from top to bottom, and enters the filter chambers on both sides under the guidance of the first oil guide plate and the second oil guide plate; S3, the crude oil is filtered in the filter cavity by the composite filter material, the trapezoidal filter holes and the circular filter holes in sequence, and the filtered edible oil enters the oil storage cavity through the first oil outlet and the second oil outlet.

10. The method for removing aflatoxin from edible oil according to claim 9, characterized in that: The adsorbent in S2 includes one or more of activated clay, nano-silica, nano-clay, sodium alginate / chitosan / montmorillonite-horseradish peroxidase and zeolite molecular sieve.

Images