Filtering device for rapeseed oil processing and filtering process thereof

Abstract

The invention discloses a filtering device for rapeseed oil processing and a filtering process thereof, and relates to the technical field of vegetable oil production. The top end of the bottom bin is detachably connected with an oil passing bin; an oil passing hole is formed in the bottom surface of the oil passing bin; an oil inlet cover is mounted at the top end of the oil passing bin; a plurality of springs I are mounted in the top end of the oil inlet cover; coarse filter plates are slidably connected between the suspenders, floating boxes are installed between the bottom faces of the suspenders, oil control pipes are fixedly connected to the bottom faces of the floating boxes and slidably connected with the oil passing holes, and a plurality of oil passing grooves are evenly distributed in the bottom of each oil control pipe in the circumferential direction and communicate with the oil passing holes. The problem of oil accumulation during double-layer filtration of rapeseed oil is effectively solved by utilizing the oil passing bin and dynamically controlling the oil accumulation amount, and the filtration efficiency is improved by means of a mode of avoiding manual regulation and control.

Description

Technical Field

[0001] The invention relates to the technical field of vegetable oil production, and in particular to a filtering device for rapeseed oil processing and a filtering process thereof. Background Art

[0002] During the production process of rapeseed oil, after the rapeseed is cleaned and screened, it will be crushed and pressed, and then a certain amount of rapeseed and oil residue will be generated. After most of the blocky oil residue is cleaned, it is still necessary to separate the small amount of small particles of oil residue remaining in the rapeseed oil. At this time, the rapeseed oil needs to be filtered, and the corresponding filtering device needs to be used.

[0003] The patent specification with the publication number CN114159859B discloses a rapeseed oil filter assembly, including a bottom plate, a side plate symmetrically fixedly installed on the upper end of the bottom plate, a slide groove is provided on the opposite ends of the two side plates, a slide bar is movably installed inside the two slide grooves, a collection box is fixedly installed between the two slide bars, the collection box is movably connected to the bottom plate, a connecting column is fixedly installed on the opposite ends of the two collection boxes, a filter cartridge is fixedly installed on one end of the four connecting columns away from the side plate, a first annular groove and a second annular groove are provided on the inner wall of the filter cartridge, the first annular groove is located above the second annular groove, a filter mechanism is fixedly installed on the side wall of the filter cartridge, and the filter mechanism includes a fixed plate, and the fixed plate is fixedly connected to the filter cartridge; When in use, the filter assembly filters rapeseed oil by installing a double-layer filter in the filtering path from top to bottom. During filtering, the rapeseed oil is coarsely filtered by the upper filter and then directly falls to the second filter for filtering. The disadvantage of this scheme is that the first coarse filtration focuses on cleaning larger particle impurities in the oil, while the secondary filtration focuses on cleaning small particle impurities remaining in the oil. To achieve this function, the aperture of the top filter needs to be larger than the aperture of the bottom filter. When filtering, the double-layer filter will have a difference in the amount of oil passing due to the different impurity content in the oil and the different apertures of the oil-passing filter. The oil of the difference part will gradually accumulate in the space between the first fixed ring and the second fixed ring of the scheme, that is, as the filtering time increases, the accumulated oil between the first fixed ring and the second fixed ring will tend to be filled, resulting in the device needing to reduce the oil inlet speed to avoid stagnation in the filtering process. The normal oil inlet speed can only be restored after the accumulated oil is filtered. This adjustment process requires manual control by the staff, thereby reducing the filtering efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a filtering device for rapeseed oil processing and a filtering process thereof. The technical problems to be solved are as follows: When the existing rapeseed oil filtering device uses a double filter screen, it will continuously produce accumulated oil that cannot be filtered in time, and the problem of reduced filtering efficiency due to cleaning the accumulated oil.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A filtering device for rapeseed oil processing comprises a bottom bin, a fine filter element is installed inside the bottom bin, an oil passing bin is detachably connected to the top of the bottom bin, an oil passing hole is provided on the bottom surface of the oil passing bin, an oil inlet cover is installed on the top of the oil passing bin, a plurality of springs are installed inside the top of the oil inlet cover, a push back plate is fixedly connected between the bottom surfaces of the springs, a plurality of suspension rods are fixedly connected to the bottom surfaces of the push back plates, a coarse filter plate is slidably connected between the suspension rods, a float box is installed between the bottom surfaces of the suspension rods, the float box can float vertically in the oil passing bin, an oil control pipe is fixedly connected to the bottom surface of the float box, the oil control pipe is slidably connected to the oil passing hole, a plurality of oil passing grooves are evenly arranged along the circumferential direction at the bottom of the oil control pipe, the oil passing grooves are communicated with the oil passing hole, and the oil passing bin is used to cooperate with the float box and spring one to control the amount of accumulated oil.

[0006] As a further solution of the present invention: the top of the peripheral side surface of the oil control pipe is sealed, and the top of the oil passage groove is higher than the inner bottom surface of the oil passage bin.

[0007] As a further solution of the present invention: a liquid inlet pipe is installed on one side of the bottom of the oil inlet cover, and a liquid outlet pipe is installed on one side of the bottom of the fine filter.

[0008] As a further solution of the present invention: the oil transfer bin is transparent.

[0009] As a further solution of the present invention: handles are installed on both sides of the bottom of the oil transfer bin, and a sealing ring is installed between one side of the bottom of the oil transfer bin and one side of the top of the bottom bin.

[0010] As a further solution of the present invention: the fine filter element includes a fine filter plate, the peripheral side surface of the fine filter plate is in contact with the inner wall of the bottom bin, the bottom surface of the fine filter plate is fixedly connected to a plurality of support rods, the bottom surface of the support rods is abutted against the adjacent side of the bottom bin, and the height of the support rods does not exceed half of the height of the bottom bin.

[0011] As a further solution of the present invention: the filtering aperture of the coarse filter plate is larger than the filtering aperture of the fine filter plate, a buckle ring is arranged on the bottom surface of the oil inlet cover along the circumferential direction, a plurality of fasteners are evenly installed along the circumferential direction on the outer side of the top of the oil transfer bin, the fasteners are buckled with the buckle ring, the side edge of the coarse filter plate is clamped between the buckle ring and the oil transfer bin, the push back plate is arranged in the vertical middle part of the oil inlet cover, and the float box is made of hollow plastic and is located in the middle part of the oil transfer bin.

[0012] As a further solution of the present invention: a pressure block is installed at the top of the oil inlet cover, a spring 2 is installed between the bottom of the pressure block and the top of the inside of the oil inlet cover, and the distance between the bottom surface of the pressure block and the top of the push back plate is greater than the vertical length of the oil groove.

[0013] A rapeseed oil filtering process is completed by using the aforementioned rapeseed oil processing filtering device.

[0014] Beneficial effects of the present invention: In the present invention, an oil bin is installed between an oil inlet cover on which a coarse filter plate is installed and a bottom bin on which a fine filter element is installed, and an oil hole is arranged at the center of the oil bin. When in use, rapeseed oil is filtered into the oil bin via the coarse filter plate through a liquid inlet pipe on one side of the oil inlet cover, and then enters the bottom bin through the oil hole and is filtered by the fine filter element. The accumulated liquid generated due to the different filtering speeds of the coarse filter plate and the fine filter element is retained in the oil bin, and the oil hole changes the conveying speed of the rapeseed oil when it is conducted from the upper filter layer to the lower filter layer. That is, an oil bin with an oil hole is installed between the double-layer filter elements, and when the buffer space reserved in the oil bin is larger than the space required for the accumulated oil generated during the filtering period, the influence of the accumulated oil generated during the double-layer filtering on the filtering process can be avoided, and the filtering stability of the bottom bin filtering layer is maintained, thereby improving the filtering efficiency. Furthermore, by installing multiple springs inside the oil inlet cover, and arranging a push back plate at the bottom end of each spring, arranging a suspension rod penetrating the coarse filter plate on the bottom surface of the push back plate, and installing a float box on the bottom surface of the suspension rod, and arranging an oil control pipe passing through the oil hole and having an oil groove on the bottom surface of the float box, when it is in use, the floating of the float box by the accumulated oil and the downward pressure of the upper float box by the spring pair, in conjunction with the control of the oil inlet speed from the oil bin to the bottom bin when the float box moves up and down, the oil storage in the oil bin is controlled, so that the accumulated oil in the oil bin is always in a cycle of alternating increase and decrease. Its technical advantage lies in that when the accumulated oil realizes a cycle of large and small amounts in the oil bin, When controlled, the accumulated oil in the oil bin is prevented from becoming increasingly full, the impact on the top and bottom filter layers is eliminated, and the pre-capacity of the oil bin is no longer affected by the total amount of accumulated liquid during filtration. This technical means can ensure that the double-layer filter layer is always in stable filtration and is not affected by the volume of the oil bin and the amount of accumulated oil, thereby achieving dynamic control of the oil accumulation treatment. In other words, in this case, an integrated technical solution is constructed by utilizing the oil bin and the dynamic control of the amount of accumulated oil, which aims to effectively solve the problem of oil accumulation during double-layer filtration of rapeseed oil, thereby helping to avoid the reduction of filtration efficiency due to manual intervention during the filtration process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a half-section view of the present invention; Figure 3 It is a half-section diagram of the local structure of the upper part of the present invention; Figure 4 It is a partial structural half-section diagram of the bottom of the present invention; Figure 5 The present invention Figure 4 Enlarged detail of point A in the middle.

[0017] In the figure: 1. bottom bin; 2. fine filter; 21. fine filter plate; 22. support rod; 3. oil bin; 4. oil hole; 5. oil inlet cover; 6. spring one; 7. push back plate; 8. suspension rod; 9. coarse filter plate; 10. float box; 11. oil control pipe; 12. oil trough; 13. liquid inlet pipe; 14. liquid outlet pipe; 15. handle; 16. sealing ring; 17. buckle ring; 18. fastener; 19. pressure block; 20. spring two. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figures 1 to 5 As shown, a filtering device for rapeseed oil processing comprises a bottom bin 1, a fine filter 2 is installed inside the bottom bin 1, an oil passing bin 3 is detachably connected to the top of the bottom bin 1, an oil passing hole 4 is provided at the center of the bottom surface of the oil passing bin 3, an oil inlet cover 5 is installed at the top of the oil passing bin 3, a plurality of springs 6 are installed inside the top of the oil inlet cover 5, a push back plate 7 is fixedly connected between the bottom surfaces of the springs 6, a plurality of suspension rods 8 are fixedly connected to the bottom surfaces of the push back plates 7, a coarse filter plate 9 is slidably connected between the suspension rods 8, and the coarse filter plate 9 is installed Installed between the top of the oil storage tank 3 and the bottom of the oil inlet cover 5, a float box 10 is installed between the bottoms of the suspension rods 8, and the float box 10 can float vertically in the oil storage tank 3. The bottom of the float box 10 is fixedly connected to the oil control pipe 11, and the oil control pipe 11 is slidably connected to the oil hole 4. The top of the peripheral side of the oil control pipe 11 is in a sealed state, and ten oil grooves 12 are evenly arranged at the bottom of the peripheral side, and the oil grooves 12 are connected to the oil hole 4. The float box 10 is used to cooperate with the oil storage tank 3 to control the accumulated oil; It should be noted that a liquid inlet pipe 13 is installed on one side of the bottom of the oil inlet cover 5, and a liquid outlet pipe 14 is installed on one side of the bottom of the fine filter 2. The rapeseed oil passes through the liquid inlet pipe 13 and the coarse filter plate 9 at the bottom and falls into the oil bin 3, and then falls from the oil hole 4 at the bottom of the oil bin 3 to the fine filter 2, thereby realizing double filtration of the rapeseed oil, and finally discharged from the device through the liquid outlet pipe 14; the oil bin 3 is transparent, and the oil bin 3 includes but is not limited to a transparent acrylic plate. The transparent oil bin 3 can observe the height of the accumulated oil therein, which is convenient for setting a more reasonable initial oil inlet speed to avoid the oil accumulation exceeding the upper limit of the internal cleaning oil accumulation too quickly.

[0020] like Figure 1 , Figure 4 and Figure 5 As shown, handles 15 are installed on both sides of the bottom of the oil bin 3, and a sealing ring 16 is installed between one side of the bottom of the oil bin 3 and one side of the top of the bottom bin 1; that is, when installing the bottom bin 1 and the oil bin 3, the oil bin 3 is plugged into the top of the bottom bin 1 by holding the handles 15 on both sides of the oil bin 3, and the sealing ring 16 is used to improve the sealing between the bottom bin 1 and the oil bin 3 to ensure the stable transfer of the rapeseed oil from the oil bin 3 to the bottom bin 1 during the secondary filtration. Furthermore, since the connection between the oil bin 3 and the bottom bin 1 is plug-in, it is very convenient to disassemble and assemble, and its purpose is to improve the convenience of cleaning the fine filter 2 while ensuring the sealing of the connection; Preferably, the fine filter element 2 includes a fine filter plate 21, the side surface of the fine filter plate 21 is in contact with the inner wall of the bottom bin 1, and four support rods 22 are fixedly connected to the bottom surface of the fine filter plate 21. The bottom surface of the support rod 22 is against the bottom surface of the bottom bin 1. The height of the support rod 22 does not exceed half of the height of the bottom bin 1. After the rapeseed oil enters the bottom bin 1, sufficient carrying space is reserved at the top of the bottom bin 1 for the fine filter plate 21 located in the middle to perform secondary filtration. During the filtering process, since the side surfaces of the fine filter plate 21 are in contact with the inner wall of the bottom bin 1, partial omission of the rapeseed oil during the secondary filtration can be avoided. At the same time, as the filtering time increases, the space above the fine filter plate 21 in the bottom bin 1 becomes a storage space for intercepting tiny particles of oil residue. After cleaning, lift the handle 15 on the side wall of the oil bin 3 to separate the bottom bin 1 and the oil bin 3, and then pour out the fine filter element 2. It should be noted that the connection method between the bottom bin 1 and the oil bin 3 includes but is not limited to plugging, and a sealing layer may be provided between the top of the bottom bin 1 and the bottom of the oil bin 3, and threads may be provided on the vertically adjacent sides, and the handle 15 may be used for rotational connection.

[0021] like Figures 1 to 3 As shown, the filter aperture of the coarse filter plate 9 is larger than the filter aperture of the fine filter plate 21, a buckle ring 17 is arranged on the bottom surface of the oil inlet cover 5 along the circumferential direction, three fasteners 18 are evenly installed along the circumferential direction on the outer side of the top of the oil storage tank 3, and the fasteners 18 are buckled with the buckle ring 17. The side of the coarse filter plate 9 is clamped between the buckle ring 17 and the top of the oil storage tank 3, and the push back plate 7 is arranged in the middle of the oil inlet cover 5 in the vertical direction. The float box 10 is preferably made of hollow plastic and is located in the middle of the oil storage tank 3. The top of the oil tank 12 is higher than the bottom plate height of the oil storage tank 3 (see Figure 2 ); It should be noted that the bottom of the oil inlet cover 5 is connected to the push back plate 7, the suspension rod 8, the float box 10 and the oil control pipe 11 in sequence through the spring 16. When the cover is toward the oil bin 3, the coarse filter plate 9 with an outer diameter larger than the top diameter of the oil bin 3 will overlap the top of the oil bin 3 due to the sliding connection with the suspension rod 8. With the crimping of the oil inlet cover 5, it is limited and clamped between the buckle ring 17 and the top of the oil bin 3, and then the buckle tongue of the fastener 18 is buckled to the side of the buckle ring 17. The oil bin 3 and the oil inlet cover 5 are locked in the concave buckle groove. At this time, the float box 10 is suspended in the middle position of the oil bin 3. The hollow plastic float box 10 is light in weight and easy to float. At this time, the oil groove 12 at the bottom of the oil control pipe 11 is higher than the upper part of the inner bottom surface of the oil bin 3, so as to transfer the rapeseed oil filtered for the first time to the bottom bin 1 for secondary filtration. In particular, the suspension rod 8 and the float box 10 are detachable to facilitate the removal of the coarse filter plate 9 for cleaning.

[0022] A pressure block 19 is installed at the top of the oil inlet cover 5, and a spring 20 is installed between the bottom of the pressure block 19 and the top of the inside of the oil inlet cover 5. The distance between the bottom surface of the pressure block 19 and the top of the push-back plate 7 is greater than the vertical length of the oil groove 12. It should be noted that when oil accumulates in the oil storage tank 3, the float box 10 will gradually float up, and during the floating process, the push-back plate 7 connected to the top thereof will be driven to move up, and the oil control pipe 11 will move up synchronously, then each oil passage groove 12 will gradually move up until it is located inside the oil storage tank 3 as a whole, at this time, the oil storage tank 3 reaches the maximum oil accumulation and oil passing speed, because the distance between the pressing block 19 and the push-back plate 7 is greater than the length of the oil passage groove 12, even if the oil control pipe 11 completely enters the oil storage tank 3, the push-back plate 7 above it still does not contact the pressing block 19, The purpose is to avoid the oil pressure structure interfering with the control process of spring 6 on cleaning of accumulated oil; when the filtering process comes to an end, a large amount of scum accumulates on the top of the coarse filter plate 9, and there is still a lot of residual oil in the scum, which can be squeezed by pressing the pressure block 19 outside the device to squeeze the push back plate 7, and the push back plate 7 will then filter the residual oil in the scum through the coarse filter plate 9 into the oil bin 3 to realize the collection and filtering function of the last part of the rapeseed oil. After the downward pressure is completed, the push back plate 7 and the pressure block 19 are restored to their original positions due to the rebound force of the spring.

[0023] Working principle of the present invention: When filtering rapeseed oil, rapeseed oil is injected into the liquid inlet pipe 13, and the rapeseed oil enters the oil storage bin 3 through the coarse filter plate 9, that is, the rapeseed oil does not directly enter the bottom bin 1. In this process, the oil storage bin 3 is used as an intermediate buffer bin for two filtering processes to temporarily retain the accumulated oil due to the difference in filtering speed, and this part of the accumulated oil is gradually cleaned through the structure installed on the bottom surface of the oil inlet cover 5, so that the device is not affected by the accumulated oil during the entire filtering stage. Specifically, after the rapeseed oil falls into the oil storage bin 3 from the oil inlet cover 5, it flows to the fine filter plate 21 in the bottom bin 1 through the partially leaked oil storage groove 12. Since the initial leakage slot length of the oil storage groove 12 is short, the oil transfer speed from the oil storage bin 3 to the bottom bin 1 is lower than the oil transfer speed from the oil inlet cover 5 to the oil storage bin 3. Then, the rapeseed oil will gradually accumulate in the oil storage bin 3 until the rapeseed oil contacts the float box 10. Then, the float box 10 moves upward under the action of buoyancy. On the one hand, the upward movement of the float box 10 will cause the oil control pipe 11 below to move upward, so that the inlet liquid connected between the oil storage groove 12 and the bottom bin 1 will be As the notch gradually increases, the oil inlet speed in the bottom bin 1 increases, and the oil accumulation in the oil storage bin 3 gradually decreases. On the other hand, the upward movement of the float box 10 will cause the upper suspension rod 8 to slide up and lift the push-back plate 7, and the push-back plate 7 squeezes the spring 16, and the spring 16 rebounds and presses the float box 10 in the opposite direction. The downward float box 10 shortens the oil inlet channel from the oil slot 12 to the bottom bin 1 again, resulting in a decrease in the oil inlet speed of the oil storage bin 3 to the bottom bin 1. At this time, the oil storage bin 3 returns to a state with less oil accumulation but a faster oil accumulation speed, and then enters a cyclic regulation process of the oil accumulation amount in the oil storage bin 3; During this circulation process, the top coarse filter plate 9 and the bottom fine filter plate 21 are always in a normal filtering state and are not affected by the amount of oil accumulated in the middle oil storage bin 3. The oil storage bin 3 circulates and regulates the amount of oil accumulated by cooperating with the spring 6, the float box 10 and the oil control pipe 11, so as to achieve timely and effective cleaning of the accumulated oil and maintain the stable operation of the double-layer filtration. There is no need for the staff to actively adjust the liquid inlet speed to solve the oil accumulation problem, making the filtration of rapeseed oil more convenient and efficient.

[0024] It can be seen from the above process that a filtering process of a filtering device for rapeseed oil processing comprises the following steps: S1, install the bottom bin 1 and the oil inlet cover 5 at the bottom and top of the oil bin 3 respectively, and inject rapeseed oil into the liquid inlet pipe 13; S2, rapeseed oil enters the oil storage tank 3 through the oil inlet cover 5, and enters the bottom storage tank 1 through the oil storage tank 3; S3, the float box 10 in the oil storage bin 3 moves in a vertical cycle, the rapeseed oil accumulation in the oil storage bin 3 increases and decreases in a cycle, and the filtration of the top coarse filter plate 9 and the bottom fine filter plate 21 operates stably; S4, after filtration, the liquid is discharged from the liquid outlet pipe 14, and the oil inlet cover 5 and the bottom bin 1 are disassembled to clean the coarse filter plate 9 and the fine filter element 2.

[0025] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A filtering device for rapeseed oil processing, comprising a bottom bin (1), wherein a fine filter element (2) is installed inside the bottom bin (1), characterized in that: The top of the bottom bin (1) is detachably connected to an oil bin (3), the bottom surface of the oil bin (3) is provided with an oil hole (4), the top of the oil bin (3) is provided with an oil inlet cover (5), the top of the oil inlet cover (5) is provided with a plurality of springs (6), the bottom surfaces of the springs (6) are fixedly connected with a push-back plate (7), the bottom surfaces of the push-back plates (7) are fixedly connected with a plurality of suspension rods (8), the bottom surfaces of the suspension rods (8) are slidably connected with a coarse filter plate (9), the bottom surfaces of the suspension rods (8) are A float box (10) is installed between the two sides. The float box (10) can float vertically in the oil storage bin (3). An oil control pipe (11) is fixedly connected to the bottom surface of the float box (10). The oil control pipe (11) is slidably connected to the oil hole (4). A plurality of oil grooves (12) are evenly arranged along the annular direction at the bottom of the oil control pipe (11). The oil grooves (12) are connected to the oil hole (4). The oil storage bin (3) is used to cooperate with the float box (10) and spring 1 (6) to control the amount of accumulated oil.

2. A filtering device for rapeseed oil processing according to claim 1, characterized in that: The top of the peripheral side surface of the oil control pipe (11) is sealed, and the top of the oil passage groove (12) is higher than the inner bottom surface of the oil passage bin (3).

3. A filtering device for rapeseed oil processing according to claim 1, characterized in that: A liquid inlet pipe (13) is installed on one side of the bottom of the oil inlet cover (5), and a liquid outlet pipe (14) is installed on one side of the bottom of the fine filter (2).

4. A filtering device for rapeseed oil processing according to claim 1, characterized in that: The oil storage bin (3) is transparent.

5. A filtering device for rapeseed oil processing according to claim 1, characterized in that: Handles (15) are installed on both sides of the bottom of the oil storage bin (3), and a sealing ring (16) is installed between one side of the bottom of the oil storage bin (3) and one side of the top of the bottom bin (1).

6. A filtering device for rapeseed oil processing according to claim 1, characterized in that: The fine filter element (2) comprises a fine filter plate (21), the side surface of the fine filter plate (21) being in contact with the inner wall of the bottom bin (1), the bottom surface of the fine filter plate (21) being fixedly connected to a plurality of support rods (22), the bottom surfaces of the support rods (22) being in contact with adjacent sides of the bottom bin (1), and the height of the support rods (22) not exceeding half the height of the bottom bin (1).

7. A filtering device for rapeseed oil processing according to claim 6, characterized in that: The filtering aperture of the coarse filter plate (9) is larger than the filtering aperture of the fine filter plate (21); a buckle ring (17) is arranged on the bottom surface of the oil inlet cover (5) along the circumferential direction; a plurality of fasteners (18) are evenly installed along the circumferential direction on the outer side of the top of the oil storage bin (3); the fasteners (18) are buckled with the buckle ring (17); the side of the coarse filter plate (9) is clamped between the buckle ring (17) and the oil storage bin (3); the push back plate (7) is arranged in the middle of the oil inlet cover (5) in the vertical direction; and the float box (10) is made of hollow plastic and is located in the middle of the oil storage bin (3).

8. The filtering device for rapeseed oil processing according to claim 1, characterized in that: A pressure block (19) is installed at the top of the oil inlet cover (5), and a spring 2 (20) is installed between the bottom of the pressure block (19) and the top of the inside of the oil inlet cover (5). The distance between the bottom surface of the pressure block (19) and the top of the push-back plate (7) is greater than the vertical length of the oil groove (12).

9. A filtration process for rapeseed oil, characterized in that: The filtering process is completed by using a filtering device for rapeseed oil processing as described in claim 7.

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