A raw material circulation screening device for rapeseed oil processing

Abstract

The utility model discloses a raw material circulation screening device for rapeseed oil processing, which relates to the technical field of rapeseed oil processing, and comprises a box, a screening component and a circulation component. The utility model is that when the rapeseed raw material to be obtained is screened, the raw material is added from the top of the device, at which time the motor drives the screening component to work, the first screen and the second screen start to vibrate at the same frequency, the raw material rolls along the vibrating first screen, so that the raw material that can pass through the mesh of the first screen will fall into the collector, and the other raw materials will roll from the second screen through the connecting groove in turn, and then the remaining raw materials will enter the circulation component through the collecting groove, and the circulation component will transport the raw material to the guide groove, so that the raw material passes through the first screen and the second screen again, so that the required raw material can be obtained after multiple cycles, and at the same time, the integrity of the raw material during screening can be effectively guaranteed, and the crushing rate of the raw material can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rapeseed oil processing, in particular to a raw material circulation screening device for rapeseed oil processing. Background Art

[0002] Rapeseed oil is an edible oil that has the effects of reducing swelling, toxins and dispersing fire. However, when processing rapeseed oil, most of the production is through a series of operations such as pressing the rapeseed. In order to improve the purity of rapeseed oil and reduce the impurities mixed in it, screening devices are usually used to screen the rapeseed to obtain the required rapeseed.

[0003] In the prior art, a Chinese patent with publication number CN219616012U is proposed to solve the above-mentioned technical problems. The technical solution disclosed in the patent document is as follows: a raw material circulation screening device for rapeseed oil processing, comprising a shell, and a top cover is arranged on the top of the shell. In the utility model, the driving motor in the driving assembly is started to drive the driving gear to rotate, and the driven gear is cooperated to drive the two driving shafts and the auger blades to rotate, and the rotation is reversed. When one of the auger blades rotates, the raw material will be transported upwards, and sent from the position of the inclined slot to the position of the other auger blade, and the other auger blade will transport it downwards. After reaching the bottom, the accumulated raw material will be squeezed to the position of the first auger blade and transported upwards again, thereby completing an infinite cycle. During the circulation process, rapeseed with a smaller diameter will be discharged from the holes on the filter plate, thereby completing the screening of the rapeseed oil raw material. The screening effect is good and can be infinitely circulated. Therefore, the quality of raw materials for rapeseed oil production is greatly improved. However, during the screening process of the device, the rapeseed raw material is subjected to the pressure generated by the operation of the auger blade, which makes the rapeseed raw material easy to break and cannot be accurately screened. The increased rapeseed breakage rate will lead to excessive waste of cost. Utility Model Content

[0004] The utility model aims to provide a raw material circulation screening device for rapeseed oil processing to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A raw material circulation screening device for rapeseed oil processing comprises a box body, a motor is fixedly connected to the outside of the box body, a first screen and a second screen are rotatably connected to the box body respectively, a connecting groove is fixedly connected to the box body, a partition is fixedly connected to the box body, a guide groove is fixedly connected to the top of the box body, the first screen is located above the connecting groove, the second screen is located below the connecting groove, the first screen and the second screen are both inclined, a collecting groove is provided on the side of the second screen away from the connecting groove, the collecting groove is fixedly connected to the box body, a screening component for screening raw materials is connected to the box body, and a circulation component for circulating raw materials is connected to one side of the box body.

[0007] When the required rapeseed raw material (hereinafter referred to as "raw material") is to be screened, the raw material is added from the top of the device, and the motor will drive the screening component to work. The first screen and the second screen start to vibrate at the same frequency, and the raw material will roll along the vibrating first screen, so that the raw material that can pass through the mesh of the first screen will fall and be collected, and other raw materials will roll from the second screen through the connecting groove in turn, so that the raw material that can pass through the mesh of the second screen will fall and be collected, and then the remaining raw material will enter the circulation component through the collecting groove, and the circulation component will transport the raw material to the guide groove, so that the raw material passes through the first screen and the second screen again, so that the required raw material can be obtained after multiple cycles, and at the same time, it can effectively ensure the integrity of the raw material during screening and reduce the breakage rate of the raw material.

[0008] A further improvement of the technical solution of the utility model is that: the screening component includes a rotating shaft, the rotating shaft is rotatably connected to the box, one end of the rotating shaft is fixedly connected to the output end of the motor, the rotating shaft is rotatably connected to the partition, a pulley is fixedly connected to the rotating shaft, a transmission shaft is arranged above the rotating shaft, one end of the transmission shaft is rotatably connected to the partition, the other end of the transmission shaft is rotatably connected to the box, a pulley and a cam are respectively fixedly connected to the transmission shaft, the pulleys are connected by belt transmission, a slide bar is slidably connected to the partition, a baffle is fixedly connected to one side of the bottom of the slide bar, and blocks are respectively fixedly connected to both sides of the slide bar, the blocks are both located below the first screen and the second screen, the blocks respectively conflict with the first screen and the second screen, and the cam and the baffle are used in conjunction with each other.

[0009] The above-mentioned technical scheme is adopted. In this scheme, when the device starts working, the motor starts to drive the rotating shaft fixedly connected to its output end to rotate. The rotation of the rotating shaft will transmit power to the transmission shaft through the transmission connection between the pulley and the belt. At this time, the rotation of the transmission shaft will drive the cam to rotate. The rotation of the cam cooperates with the baffle to drive the slide bar to slide up and down. The sliding of the slide bar will simultaneously drive the first screen and the second screen to vibrate with a frequency, thereby achieving the purpose of screening the raw materials. At the same time, this can also better protect the raw materials and reduce the breakage rate of the raw materials.

[0010] A further improvement of the technical solution of the utility model is that: the circulation component includes a shell, the shell is fixedly connected to the box body, an auger is rotatably connected inside the shell, a worm gear is fixedly connected to the bottom of the auger, a worm is fixedly connected to the rotating shaft, the worm gear is meshed with the worm, and a feed port and a discharge port are respectively provided on the box body, the feed port is located on the side of the collecting trough away from the second screen, and the discharge port is located at one end of the guide trough.

[0011] The above-mentioned technical scheme is adopted. In this scheme, when the raw materials pass through the first screen and the second screen, they will enter the collecting trough. The motor drives the rotating shaft to rotate, thereby driving the worm fixedly connected to it to rotate. Because the worm wheel is meshing with the worm, the worm will drive the auger to rotate through the worm wheel. The raw materials in the collecting trough will enter from the feed port, and then be transported to the discharge port through the auger. The raw materials will return to the first sieve through the discharge port and the guide trough, thereby achieving the purpose of cyclic screening.

[0012] A further improvement of the technical solution of the utility model is that: an end of the first screen close to the connecting groove is fixedly connected with a guide plate, and an end of the second screen away from the connecting groove is fixedly connected with the guide plate.

[0013] The above technical solution is adopted, in which guide plates are respectively arranged at one end of the first screen close to the connecting groove and one end of the second screen away from the connecting groove in order to concentrate the raw materials and prevent the raw materials from rolling to the corners and affecting the working efficiency of the device in screening the raw materials.

[0014] A further improvement of the technical solution of the utility model is that a buffer plate is arranged on one side of the first screen close to the guide plate, and the buffer plate is fixedly connected to the box body.

[0015] The above technical solution is adopted. In this solution, part of the raw materials will collide with the inner wall of the box when the raw materials roll down from the first screen to the connecting groove, which will cause the raw materials to be broken and thus increase the breakage rate of the raw materials. A buffer plate is arranged on the side of the first screen close to the guide plate to effectively protect the raw materials from being broken. At the same time, when the raw materials contact the buffer plate, the buffer plate will absorb most of the potential energy, thereby slowing down the movement speed of the raw materials.

[0016] A further improvement of the technical solution of the utility model is that a rotating plate is rotatably connected to the guide groove, and the rotating plate is rotatably connected to the guide groove via a torsion spring.

[0017] The above technical solution is adopted. In this solution, after the raw materials are screened, the raw materials in circulation are the required raw materials. By rotatably connecting a rotating plate on the guide groove, when the rotating plate is rotated, the raw materials will no longer undergo the process of circulating screening. At this time, the raw materials will be directly collected along the guide groove.

[0018] A further improvement of the technical solution of the utility model is that a collector is arranged below the first screen and the second screen, the collector is slidably connected to the box, and a handle is fixedly connected to one side of the collector.

[0019] By adopting the above technical solution, a collector is provided in the solution so that the sieved raw materials can be collected and reused to avoid waste caused by falling, and a handle is provided so that the purpose of easy replacement and collection can be achieved.

[0020] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0021] 1. The utility model provides a raw material circulation screening device for rapeseed oil processing. When the rapeseed raw material (hereinafter referred to as "raw material") to be obtained is screened, the raw material is added from the top of the device. At this time, the motor will drive the screening component to work, and the first screen and the second screen start to vibrate at the same frequency. The raw material will roll along the vibrating first screen, so that the raw material that can pass through the mesh of the first screen will fall and be collected, and other raw materials will roll from the second screen through the connecting groove in turn, so that the raw material that can pass through the mesh of the second screen will fall and be collected, and then the remaining raw material will enter the circulation component through the collecting groove, and the circulation component will transport the raw material to the guide groove, so that the raw material passes through the first screen and the second screen again, so that the required raw material can be obtained after multiple cycles, and at the same time, the integrity of the raw material during screening can be effectively guaranteed, and the breakage rate of the raw material can be reduced.

[0022] 2. The utility model provides a raw material circulation screening device for rapeseed oil processing. When the device starts working, the motor starts to drive the rotating shaft fixedly connected to its output end to rotate. The rotation of the rotating shaft will transmit power to the transmission shaft through the transmission connection between the pulley and the belt. At this time, the rotation of the transmission shaft will drive the cam to rotate. The rotation of the cam cooperates with the baffle to drive the slide bar to slide up and down. The sliding of the slide bar will simultaneously drive the first screen and the second screen to vibrate with a frequency, thereby achieving the purpose of screening the raw materials. At the same time, this can also better protect the raw materials and reduce the breakage rate of the raw materials.

[0023] 3. The utility model provides a raw material circulation screening device for rapeseed oil processing. When the raw material passes through the first screen and the second screen, it will enter the collecting tank. The motor drives the rotating shaft to rotate, thereby driving the worm fixedly connected to it to rotate. Because the worm wheel is meshed with the worm, the worm will drive the auger to rotate through the worm wheel. The raw material in the collecting tank will enter from the feed port, and then be transported to the discharge port through the auger. The raw material will return to the first screen through the discharge port and the guide groove, thereby achieving the purpose of circulation screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the circulation screening structure of the utility model;

[0026] Figure 2 It is a left-side cross-sectional structural schematic diagram of the utility model;

[0027] Figure 3 It is a rear cross-sectional structural schematic diagram of the utility model;

[0028] Figure 4 It is a right side cross-sectional structural schematic diagram of the utility model;

[0029] Figure 5 This is a schematic diagram of the material cutting structure of the utility model;

[0030] Figure 6 This is a schematic diagram of the slider structure of the utility model;

[0031] Figure 7 It is a schematic diagram of the local structure of the circulation component of the utility model;

[0032] In the figure: 1. box body; 2. motor; 3. first screen; 4. second screen; 5. connecting groove; 6. partition; 7. guide groove; 8. collecting groove; 9. rotating shaft; 10. pulley; 11. transmission shaft; 12. cam; 13. belt; 14. slide bar; 15. baffle; 16. block; 17. shell; 18. auger; 19. worm gear; 20. worm; 21. feed port; 22. discharge port; 23. guide plate; 24. buffer plate; 25. rotating plate; 26. collector; 27. handle. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the embodiments:

[0034] Example 1

[0035] like Figure 1 As shown, the utility model provides a raw material circulation screening device for rapeseed oil processing, comprising a box body 1, a motor 2 is fixedly connected to the outside of the box body 1, a first screen 3 and a second screen 4 are rotatably connected in the box body 1, a connecting groove 5 is fixedly connected in the box body 1, a partition 6 is fixedly connected in the box body 1, a guide groove 7 is fixedly connected on the top of the box body 1, the first screen 3 is located above the connecting groove 5, the second screen 4 is located below the connecting groove 5, the first screen 3 and the second screen 4 are both inclined, a collecting groove 8 is provided on the side of the second screen 4 away from the connecting groove 5, the collecting groove 8 is fixedly connected to the box body 1, a screening component for screening raw materials is connected in the box body 1, and a circulation component for circulating raw materials is connected to one side of the box body 1.

[0036] In this embodiment, when the required rapeseed raw material (hereinafter referred to as "raw material") is to be screened, the raw material is added from the top of the device. At this time, the motor 2 will drive the screening component to work, and the first screen 3 and the second screen 4 will start to vibrate at the same frequency. The raw material will roll along the vibrating first screen 3, so that the raw material that can pass through the mesh of the first screen 3 will fall and be collected, and other raw materials will roll from the second screen 4 through the connecting groove 5 in turn, so that the raw material that can pass through the mesh of the second screen 4 will fall and be collected, and then the remaining raw material will enter the circulation component through the collecting groove 8, and the circulation component will transport the raw material to the guide groove 7, so that the raw material passes through the first screen 3 and the second screen 4 again, so that the required raw material can be obtained after multiple cycles, and at the same time, it can also effectively ensure the integrity of the raw material during screening and reduce the breakage rate of the raw material.

[0037] like Figure 2 , Figure 7 As shown, in the present embodiment, preferably, the screening component includes a rotating shaft 9, which is rotatably connected to the casing 1, one end of the rotating shaft 9 is fixedly connected to the output end of the motor 2, the rotating shaft 9 is rotatably connected to the partition 6, a pulley 10 is fixedly connected to the rotating shaft 9, a transmission shaft 11 is arranged above the rotating shaft 9, one end of the transmission shaft 11 is rotatably connected to the partition 6, the other end of the transmission shaft 11 is rotatably connected to the casing 1, a pulley 10 and a cam 12 are respectively fixedly connected to the transmission shaft 11, the pulleys 10 are connected by a belt 13 for transmission, a slide bar 14 is slidably connected to the partition 6, a baffle 15 is fixedly connected to one side of the bottom of the slide bar 14, and blocks 16 are respectively fixedly connected to both sides of the slide bar 14, the blocks 16 are both located below the first screen 3 and the second screen 4, the blocks 16 respectively contact the first screen 3 and the second screen 4, and the cam 12 is used in conjunction with the baffle 15.

[0038] When the device starts working, the motor 2 starts and drives the rotating shaft 9 fixedly connected to its output end to rotate. The rotation of the rotating shaft 9 will transmit power to the transmission shaft 11 through the transmission connection between the pulley 10 and the belt 13. At this time, the rotation of the transmission shaft 11 will drive the cam 12 to rotate. The rotation of the cam 12 cooperates with the baffle 15 to drive the slide bar 14 to slide up and down. The sliding of the slide bar 14 will simultaneously drive the first screen 3 and the second screen 4 to vibrate with a frequency, thereby achieving the purpose of screening the raw materials. At the same time, this can also better protect the raw materials and reduce the breakage rate of the raw materials.

[0039] like Figure 2 , Figure 3As shown, preferably, the circulation component includes a shell 17, the shell 17 is fixedly connected to the box body 1, an auger 18 is rotatably connected inside the shell 17, a worm gear 19 is fixedly connected to the bottom of the auger 18, a worm 20 is fixedly connected to the rotating shaft 9, the worm gear 19 is meshed with the worm 20, and a feed port 21 and a discharge port 22 are respectively opened on the box body 1, the feed port 21 is located on the side of the collecting trough 8 away from the second screen 4, and the discharge port 22 is located at one end of the guide trough 7.

[0040] When the raw materials pass through the first screen 3 and the second screen 4, they will enter the collecting trough 8. The motor 2 will drive the rotating shaft 9 to rotate, thereby driving the worm 20 fixedly connected thereto to rotate. Because the worm wheel 19 is meshed with the worm 20, the worm 20 will drive the auger 18 to rotate through the worm wheel 19. The raw materials in the collecting trough 8 will enter from the feed port 21, and then be transported to the discharge port 22 through the auger 18. The raw materials will return to the first screen 3 through the discharge port 22 and the guide groove 7, thereby achieving the purpose of cyclic screening.

[0041] Example 2

[0042] like Figure 4 As shown, based on Example 1, the utility model provides a technical solution: preferably, the end of the first screen 3 close to the connecting groove 5 is fixedly connected to the guide plate 23, and the end of the second screen 4 away from the connecting groove 5 is fixedly connected to the guide plate 23.

[0043] In this embodiment, guide plates 23 are respectively provided at one end of the first screen 3 close to the connecting groove 5 and one end of the second screen 4 away from the connecting groove 5 in order to concentrate the raw materials and prevent the raw materials from rolling to the corners and affecting the working efficiency of the device in screening the raw materials.

[0044] like Figure 4 As shown, in this embodiment, preferably, a buffer plate 24 is provided on one side of the first screen 3 close to the guide plate 23 , and the buffer plate 24 is fixedly connected to the box body 1 .

[0045] Because part of the raw materials will collide with the inner wall of the box body 1 when the raw materials roll down from the first screen 3 to the connecting groove 5, which will cause the raw materials to be broken and thus increase the crushing rate of the raw materials. A buffer plate 24 is arranged on the side of the first screen 3 close to the guide plate 23 to effectively protect the raw materials from being broken. At the same time, when the raw materials contact the buffer plate 24, the buffer plate 24 will absorb most of the potential energy, thereby slowing down the movement speed of the raw materials.

[0046] Example 3

[0047] like Figure 5As shown, based on Example 2, the utility model provides a technical solution: preferably, a rotating plate 25 is rotatably connected to the guide groove 7, and the rotating plate 25 is rotatably connected to the guide groove 7 via a torsion spring.

[0048] In this embodiment, after the raw materials are screened, the raw materials in circulation are the required raw materials. By providing a rotating plate 25 that is rotatably connected to the guide groove 7, when the rotating plate 25 is rotated, the raw materials will no longer undergo a circulation screening process, and the raw materials will be directly collected along the guide groove 7.

[0049] Example 4

[0050] like Figure 4 As shown, based on Example 3, the utility model provides a technical solution: preferably, a collector 26 is provided below the first screen 3 and the second screen 4, the collector 26 is slidably connected to the box body 1, and a handle 27 is fixedly connected to one side of the collector 26.

[0051] In this embodiment, the sieved raw materials can be collected and reused by providing a collector 26 to avoid waste caused by falling, and the handle 27 can be provided to achieve the purpose of easy replacement and collection.

[0052] The working principle of the raw material circulation screening device for rapeseed oil processing will be described in detail below.

[0053] like Figure 1-7As shown, when the required rapeseed raw material (hereinafter referred to as "raw material") is to be screened, the raw material is added from the top of the device, and the motor 2 will drive the screening component to work, and the first screen 3 and the second screen 4 start to vibrate at the same frequency, and the raw material will roll along the vibrating first screen 3, so that the raw material that can pass through the mesh of the first screen 3 will fall and be collected, and other raw materials will roll from the second screen 4 through the connecting groove 5 in turn, so that the raw material that can pass through the mesh of the second screen 4 will fall and be collected, and then the remaining raw material will enter the circulation component through the collecting groove 8, and the circulation component will transport the raw material to the guide groove 7, so that the raw material passes through the first screen 3 and the second screen 4 again, so that the required raw material can be obtained after multiple cycles, and at the same time, it can also effectively ensure the integrity of the raw material during screening and reduce the breakage rate of the raw material. When the device starts working, the motor 2 starts and drives the rotating shaft 9 fixedly connected to its output end to rotate. The rotation of the rotating shaft 9 will transmit power to the transmission shaft 11 through the transmission connection between the pulley 10 and the belt 13. At this time, the rotation of the transmission shaft 11 will drive the cam 12 to rotate. The rotation of the cam 12 cooperates with the baffle 15 to drive the slide bar 14 to slide up and down. The sliding of the slide bar 14 will simultaneously drive the first screen 3 and the second screen 4 to vibrate with a frequency, thereby achieving the purpose of screening the raw materials. At the same time, this can also better protect the raw materials and reduce the breakage rate of the raw materials. When the raw material passes through the first screen 3 and the second screen 4, it will enter the collection tank 8. The motor 2 drives the rotating shaft 9 to rotate, thereby driving the worm 20 fixedly connected thereto to rotate. Because the worm wheel 19 is meshed with the worm 20, the worm 20 will drive the auger 18 to rotate through the worm wheel 19. The raw material in the collection tank 8 will enter from the feed port 21, and then the raw material will be transported to the discharge port 22 through the auger 18. The raw material will return to the first screen 3 through the discharge port 22 and the guide groove 7, thereby achieving the purpose of cyclic screening. The guide plates 23 are respectively arranged at one end of the first screen 3 close to the connecting groove 5 and the end of the second screen 4 away from the connecting groove 5 in order to concentrate the raw material and prevent the raw material from rolling into the corner and affecting the working efficiency of the device in screening the raw material. Because part of the raw material will collide with the inner wall of the box body 1 during the process of rolling from the first screen 3 to the connecting groove 5, which will cause the raw material to be broken and thus increase the crushing rate of the raw material, a buffer plate 24 is provided on the side of the first screen 3 close to the guide plate 23 to effectively protect the raw material from being broken. At the same time, when the raw material contacts the buffer plate 24, the buffer plate 24 will absorb most of the potential energy, thereby slowing down the movement speed of the raw material. After the raw material is screened, the raw material in circulation at this time is the required raw material. By rotating the rotating plate 25 on the guide groove 7, when the rotating plate 25 is rotated, the raw material will no longer be circulated and screened, and the raw material will be directly collected along the guide groove 7.The collector 26 can be provided so that the sieved raw materials can be collected and reused to avoid dropping and waste. The handle 27 can be provided so that the raw materials can be easily replaced and collected.

[0054] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A raw material circulation screening device for rapeseed oil processing, comprising a housing (1); characterized in that: A motor (2) is fixedly connected to the outside of the box (1); a first screen (3) and a second screen (4) are rotatably connected in the box (1); a connecting groove (5) is fixedly connected in the box (1); a partition (6) is fixedly connected in the box (1); a guide groove (7) is fixedly connected above the box (1); the first screen (3) is located above the connecting groove (5); the second screen (4) is located below the connecting groove (5); the first screen (3) and the second screen (4) are both inclined; a collecting groove (8) is provided on a side of the second screen (4) away from the connecting groove (5); the collecting groove (8) is fixedly connected to the box (1); a screening component for screening raw materials is connected in the box (1); and a circulation component for circulating raw materials is connected to one side of the box (1).

2. The raw material circulation screening device for rapeseed oil processing according to claim 1, characterized in that: The screening component comprises a rotating shaft (9), the rotating shaft (9) being rotatably connected to the housing (1), one end of the rotating shaft (9) being fixedly connected to the output end of the motor (2), the rotating shaft (9) being rotatably connected to the partition (6), a pulley (10) being fixedly connected to the rotating shaft (9), a transmission shaft (11) being arranged above the rotating shaft (9), one end of the transmission shaft (11) being rotatably connected to the partition (6), the other end of the transmission shaft (11) being rotatably connected to the housing (1), and the transmission shaft (11) being respectively fixedly connected to the partition (6). A pulley (10) and a cam (12) are provided, the pulleys (10) are connected to each other by a belt (13), a slide bar (14) is slidably connected to the partition (6), a baffle (15) is fixedly connected to one side of the bottom of the slide bar (14), and blocks (16) are fixedly connected to both sides of the slide bar (14), the blocks (16) are both located below the first screen (3) and the second screen (4), the blocks (16) are respectively in contact with the first screen (3) and the second screen (4), and the cam (12) and the baffle (15) are used in conjunction with each other.

3. A raw material circulation screening device for rapeseed oil processing according to claim 2, characterized in that: The circulation component comprises a shell (17), the shell (17) is fixedly connected to the casing (1), an auger (18) is rotatably connected inside the shell (17), a worm gear (19) is fixedly connected to the bottom of the auger (18), a worm (20) is fixedly connected to the rotating shaft (9), the worm gear (19) is meshed with the worm (20), and a feed port (21) and a discharge port (22) are respectively provided on the casing (1), the feed port (21) is located on a side of the collecting trough (8) away from the second screen (4), and the discharge port (22) is located at one end of the guide trough (7).

4. A raw material circulation screening device for rapeseed oil processing according to claim 3, characterized in that: An end of the first screen (3) close to the connecting groove (5) is fixedly connected to a guide plate (23), and an end of the second screen (4) away from the connecting groove (5) is fixedly connected to a guide plate (23).

5. The raw material circulation screening device for rapeseed oil processing according to claim 4, characterized in that: A buffer plate (24) is provided on one side of the first screen (3) close to the guide plate (23), and the buffer plate (24) is fixedly connected to the box body (1).

6. A raw material circulation screening device for rapeseed oil processing according to claim 5, characterized in that: A rotating plate (25) is rotatably connected to the guide groove (7), and the rotating plate (25) is rotatably connected to the guide groove (7) via a torsion spring.

7. A raw material circulation screening device for rapeseed oil processing according to claim 6, characterized in that: A collector (26) is provided below the first screen (3) and the second screen (4); the collector (26) is slidably connected to the box body (1); and a handle (27) is fixedly connected to one side of the collector (26).

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