Impurity removal device for aquatic feed

By designing a water feed impurity removal device including feed conveying, iron removal and screening mechanism, the cleaning board is used to remove iron impurities on the surface of the magnetic suction plate, the problems of low impurity removal efficiency and impurity residue are solved, and efficient impurity removal and high-quality feed production are achieved.

CN222568452UActive Publication Date: 2025-03-07SHANDONG HUILAN OCEAN TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202421130867.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-22
Publication Date
2025-03-07
Estimated Expiration
2034-05-22

AI Technical Summary

Technical Problem

During the process of decomposition removal of aquatic feed, iron impurities adsorbed on the surface of the magnetic suction plate affect the removal effect, and traditional devices have low impurity removal efficiency, and residual impurities affect the quality and utilization rate of the feed.

Method used

Aquatic feed impurity removal device is designed, including a feed conveying mechanism, an iron removal mechanism and a screening mechanism. In the iron removal mechanism, a cleaning plate is provided on the surface of the magnetic suction plate. The cleaning plate is driven to move through the telescopic rod assembly to remove surface iron impurities and improve impurity removal efficiency.

Benefits of technology

It improves the impurity removal effect of aquatic feed, reduces working intensity, improves the quality and utilization rate of feed, and ensures an efficient impurity removal process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of aquatic feed, in particular to an aquatic feed impurity removal device which comprises a conveying mechanism, an iron removal mechanism and a screening mechanism which are sequentially arranged from top to bottom, the iron removal mechanism comprises an iron removal box body, a magnetic suction plate is obliquely arranged in the iron removal box body, and the discharging end of the conveying mechanism is located at the top of the magnetic suction plate. A cleaning plate is arranged on the surface of the magnetic suction plate, a telescopic rod assembly for driving the cleaning plate to move back and forth is installed on one side of the iron removal box body, a notch matched with the cleaning plate is formed in the other side of the iron removal box body, and a cover plate is hinged to the outer side of the notch. When raw materials are subjected to impurity removal, the raw materials preferentially slide down along the inclination angle of the magnetic suction plate, at the moment, the magnetic suction plate adsorbs iron impurities contained in the raw materials, after the magnetic suction plate is used for a period of time, the telescopic rod assembly drives the cleaning plate to move on the surface of the magnetic suction plate, the iron impurities adsorbed on the surface of the magnetic suction plate are removed, and when the cleaning plate moves to the outside of the notch, the cleaning plate is driven by the telescopic rod assembly. And therefore, the surface of the magnetic suction plate is cleaned, and the impurity removal efficiency is improved.
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Description

Technical Field

[0001] The utility model relates to the field of aquatic feed, in particular to an aquatic feed impurity removal device. Background Art

[0002] Aquatic feed refers to the feed that provides nutrition and growth to aquatic animals during the breeding process. It is an important part of aquatic animal breeding and one of the key factors in improving the quality and yield of aquatic organisms. There are various ways to classify aquatic feed. According to nutritional ingredients, it can be mainly divided into premixes, concentrates, compound feeds, and mixed feeds. According to the shape of the feed, it can be divided into powder, soft granules, hard granules, puffed feed, micro granules, etc.

[0003] In order to prevent impurities in aquatic feed from reducing the nutritional value of the feed and affecting the normal growth and development of aquatic animals, impurity removal is required during the production of aquatic feed to remove adverse ingredients in the feed and ensure the high quality and nutritional value of the feed. In addition, the production process of aquatic feed includes screening and mixing, crushing, stirring and puffing, granulation, drying and packaging. Through this series of process flows, the quality of the feed and the balance of nutrients can be ensured to meet the growth needs of aquatic animals.

[0004] With regard to the above-mentioned related technologies, the inventors found that the process of removing impurities from aquatic feed not only needs to remove the particulate impurities in the raw materials, but also needs to remove the iron impurities contained in the raw materials. However, since the iron impurities are always adsorbed on the magnetic plate, as the use time increases, the surface of the magnetic plate continuously adsorbs the iron impurities, which will affect the removal effect of the iron impurities in the raw materials. At this time, the staff needs to disassemble the equipment for cleaning, which is not only time-consuming and labor-intensive and increases the work intensity, but also affects the impurity removal efficiency of the raw materials. In addition, the traditional aquatic feed impurity removal device not only has a low impurity removal efficiency, but also leaves a large amount of impurities in the feed raw materials, thereby affecting the feed quality and utilization rate. Utility Model Content

[0005] The main technical problem solved by the utility model is to provide an aquatic feed impurity removal device, which is convenient for removing iron impurities on the surface of the magnetic absorption plate, improving the impurity removal effect of the raw materials, while reducing the work intensity, improving the impurity removal efficiency of the impurity removal device, and improving the feed quality and utilization rate.

[0006] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide an aquatic feed impurity removal device, comprising: a feeding mechanism, an iron removal mechanism and a screening mechanism arranged in sequence from top to bottom, the iron removal mechanism comprising an iron removal box, a magnetic suction plate is obliquely arranged in the iron removal box, the feeding end of the feeding mechanism is located at the top of the magnetic suction plate, a cleaning plate is arranged on the surface of the magnetic suction plate, a telescopic rod assembly for driving the cleaning plate to move back and forth is installed on one side of the iron removal box, and a notch matching the cleaning plate is opened on the other side, and a cover plate is hinged on the outer side of the notch;

[0007] A V-shaped collecting opening is provided on one side of the cleaning plate away from the telescopic rod assembly. When the telescopic rod assembly drives the cleaning plate to move toward the notch, the V-shaped collecting opening is located outside the iron removal box.

[0008] By adopting the above technical scheme, the feeding mechanism evenly transports the raw materials into the iron removal box, and the raw materials slide on the surface of the magnetic plate according to the inclination angle of the magnetic plate, and the iron impurities contained in the raw materials are removed. Then the raw materials are transported to the screening mechanism for further impurity removal. After the magnetic plate has been used for a period of time, the telescopic rod assembly drives the cleaning plate to move on the surface of the magnetic plate to remove the iron impurities adsorbed on the surface. The iron impurities are concentrated on the inner side of the V-shaped collecting port according to the inclination angle of the V-shaped collecting port, and when they move out of the slot, they are no longer adsorbed to the magnetic plate and fall with their own gravity, thereby cleaning the surface of the magnetic plate and improving the impurity removal efficiency.

[0009] The utility model can be further configured as follows in a preferred example: the screening mechanism includes a screening box and a frame connected to the bottom thereof, the inner cavity of the screening box is connected to the inner cavity of the iron removal box, a partition is connected to the inner cavity of the screening box, the partition divides the inner cavity of the screening box into a screening cavity and a discharge cavity, the screening cavity is connected to the inner cavity of the iron removal box, a screening component is installed in the screening cavity, a discharge port 1 is provided at the bottom of the screening cavity, a discharge port 2 is provided at the bottom of the discharge cavity, and a collection box is placed below the discharge port 1 and the discharge port 2.

[0010] By adopting the above technical scheme, the raw materials are transferred to the screening chamber after iron removal, and then further removed from impurities through the screening component to reduce impurities in the feed raw materials, so that the removed impurities are discharged along the first discharge port and fall into the corresponding collection box, while the raw materials after impurity removal are transferred to the discharge chamber, discharged along the second discharge port and also fall into the corresponding collection box.

[0011] In a preferred example, the utility model can be further configured as follows: the screening component includes a screening drum with an opening at the top, one end of the screening drum is located in the discharge cavity, guide plates are obliquely arranged on both sides of the top opening end of the screening drum, the top ends of the guide plates are respectively connected to the inner walls of the screening box, the inner side of the screening drum is rotatably connected to a rotating roller, the outer surface of the rotating roller has a plurality of obliquely arranged blades in a circular array, the blade is arranged close to the screening drum at one end away from the rotating roller, and a driving motor for driving the rotating roller to rotate is arranged on the outside of the screening box.

[0012] By adopting the above technical scheme, the raw material after iron removal flows along the guide plate into the screening drum, and the rotating roller and the blade are driven to rotate under the action of the driving motor one, and the transported raw material falls between two adjacent blades, and the impurities such as deflated particles, granules and stones in the raw material are removed under the action of the centrifugal force generated during its rotation, and the raw material flows into the discharge chamber during continuous rotation so as to be discharged along the discharge port two.

[0013] In a preferred example, the utility model can be further configured as follows: the feeding mechanism includes a feeding box and a conical feeding hopper connected to one end of the top thereof, the feeding box is connected with a protective plate, the inner cavity of the protective plate feeding box is divided into a protective cavity and a feeding cavity, the conical feeding hopper is connected to the feeding cavity, the feeding cavity is provided with a discharge port on the bottom side of the feeding cavity close to the protective plate, the feeding cavity is connected with the inner cavity of the iron removal box through the discharge port, an active spiral feeding rod is rotatably connected in the feeding cavity, and driven spiral feeding rods rotatably connected to the feeding box are respectively provided on both sides of the active spiral feeding rod, one end of the active spiral feeding rod and the driven spiral feeding rod respectively extend into the protective cavity, one end of the active spiral feeding rod is connected to a driving wheel, one end of the driven spiral feeding rod is connected to a driven wheel, and the driven wheels are respectively connected to the driving wheel through belts, and a driving motor 2 is installed on the outer side of the feeding box, and the output shaft of the driving motor 2 is connected to the active spiral feeding rod.

[0014] By adopting the above technical solution, the conical feed hopper is convenient for feeding, and when the driving motor 2 drives the active spiral feed rod to rotate, the driven spiral feed rod is driven to rotate together, so as to evenly transmit the material, prevent the raw materials from piling up under the conical feed hopper, and improve the conveying efficiency at the same time.

[0015] In a preferred example, the utility model can be further configured as follows: the telescopic rod assembly includes an electric push rod, guide rods are provided on both sides of the electric push rod, and one end of the guide rod and the electric push rod are respectively connected to the cleaning plate.

[0016] By adopting the above technical solution, the electric push rod drives the cleaning plate to move when it is extended, so as to remove the iron impurities adsorbed on the surface of the magnetic plate, and at the same time, the stability of the movement of the cleaning plate is improved with the cooperation of the guide rod.

[0017] In a preferred example, the utility model can be further configured as follows: a collecting bucket is installed on the outer side of the iron removal box, and the collecting bucket is located below the notch.

[0018] By adopting the above technical solution, clean iron impurities fall into the collection bucket along the notch to facilitate subsequent centralized processing.

[0019] In summary, the utility model includes at least one of the following beneficial technical effects of the aquatic feed impurity removal device:

[0020] 1. When removing impurities from raw materials, the raw materials will slide down along the inclination angle of the magnetic plate first. At this time, the magnetic plate will absorb the iron impurities contained in the raw materials. After the magnetic plate has been used for a period of time, the telescopic rod assembly will drive the cleaning plate to move on the surface of the magnetic plate to remove the iron impurities absorbed on the surface. The iron impurities are concentrated on the inner side of the V-shaped collecting port according to the inclination angle, and when they move out of the slot, they are no longer absorbed by the magnetic plate and fall with their own gravity, thereby cleaning the surface of the magnetic plate and improving the impurity removal efficiency.

[0021] 2. The raw materials after iron removal flow along the guide plate into the screening drum, and the driving motor drives the rotating roller and the blade to rotate. The transported raw materials fall between two adjacent blades. The impurities such as deflated grains, particles and stones in the raw materials are removed under the action of the centrifugal force generated during their rotation. During the continuous rotation, the raw materials after impurities removal flow into the discharge cavity, further improving the impurity removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work, among which:

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 for Figure 1 Sectional view at AA in the figure;

[0025] Figure 3 for Figure 1 The cross-sectional view at BB in FIG.

[0026] Figure 4It is a structural schematic diagram of the iron removal mechanism of the utility model;

[0027] Figure 5 for Figure 1 Sectional view at CC in the figure.

[0028] In the figure: 10, feeding mechanism; 20, iron removal mechanism; 30, screening mechanism; 4, driving motor 2; 5, collecting bucket;

[0029] 11. Feed box; 12. Conical feed hopper; 13. Protective plate; 14. Protective cavity; 15. Feed cavity; 16. Active spiral feed rod; 17. Driven spiral feed rod; 18. Active wheel; 19. Driven wheel; 1a. Feeding port;

[0030] 21. Iron removal box; 22. Magnetic plate; 23. Cleaning plate; 24. Telescopic rod assembly; 25. Notch; 26. Cover plate; 27. V-shaped collection port;

[0031] 31. Screening box; 32. Frame; 33. Partition; 34. Screening chamber; 35. Discharging chamber; 36. Screening assembly; 37. Discharging port 1; 38. Discharging port 2; 39. Collecting box;

[0032] 241. Electric push rod; 242. Guide rod;

[0033] 361, screening drum; 362, guide plate; 363, rotating roller; 364, blade; 365, driving motor 1 DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0035] It should be noted that these drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0036] Reference Figure 1-5, is an aquatic feed impurity removal device disclosed in the utility model, comprising: a feeding mechanism 10, an iron removal mechanism 20 and a screening mechanism 30 arranged in sequence from top to bottom, the iron removal mechanism 20 comprises an iron removal box 21, a magnetic suction plate 22 is obliquely arranged in the iron removal box 21, a feeding end of the feeding mechanism 10 is located at the top of the magnetic suction plate 22, a cleaning plate 23 is arranged on the surface of the magnetic suction plate 22, a telescopic rod assembly 24 for driving the cleaning plate 23 to move back and forth is installed on one side of the iron removal box 21, and a notch 25 matching the cleaning plate 23 is opened on the other side, and the notch 25 is provided. 5 is hinged with a cover plate 26, a collecting bucket 5 is installed on the outside of the iron removal box 21, and the collecting bucket 5 is located below the notch 25. A V-shaped collecting port 27 is opened on the side of the cleaning plate 23 away from the telescopic rod assembly 24. When the telescopic rod assembly 24 drives the cleaning plate 23 to move toward the notch 25, the V-shaped collecting port 27 is located on the outside of the iron removal box 21. The telescopic rod assembly 24 includes an electric push rod 241, and guide rods 242 are provided on both sides of the electric push rod 241. One end of the guide rod 242 and the electric push rod 241 are respectively connected to the cleaning plate 23; the cover plate 2 6 is hinged to the outside of the iron removal box 21 and covers the surface of the notch 25. The length of the V-shaped collecting port 27 is adapted to the width of the magnetic plate 22. After the feeding mechanism 10 evenly transports the raw materials into the iron removal box 21, the raw materials slide down along the inclination angle of the magnetic plate 22, and the iron impurities contained therein are magnetically adsorbed by the magnetic plate 22 to achieve the iron removal effect. The iron-removed raw materials are then transported to the screening mechanism 30 for the next step of impurity removal. After the magnetic plate 22 has been used for a period of time, a large amount of iron impurities are adsorbed on its surface. At this time, the electric push The rod 241 cooperates with the guide rod 242 to drive the cleaning plate 23 to move on the surface of the magnetic plate 22. The bottom of the cleaning plate 23 removes the iron impurities adsorbed on the surface of the magnetic plate 22, so that the iron impurities are concentrated on the inner side of the V-shaped collecting port 27 along the inclination angle. When moving to the outside of the slot 25, the cleaning plate 23 pushes the cover plate 26 to flip and continuously moves outside the slot 25, so that the V-shaped collecting port 27 moves to the outside of the slot 25. At this time, the iron impurities are no longer magnetically adsorbed to the magnetic plate 22 and fall into the collecting bucket 5 for subsequent centralized processing, thereby improving the impurity removal efficiency.

[0037] The screening mechanism 30 includes a screening box 31 and a frame 32 connected to the bottom thereof. The inner cavity of the screening box 31 is connected to the inner cavity of the iron removal box 21. A partition 33 is connected to the screening box 31. The partition 33 divides the inner cavity of the screening box 31 into a screening cavity 34 and a discharge cavity 35. The screening cavity 34 is connected to the inner cavity of the iron removal box 21. A screening component 36 is installed in the screening cavity 34. A discharge port 37 is provided at the bottom of the screening cavity 34. A discharge port 37 is provided at the bottom of the discharge cavity 35. The first discharge port 38, the lower part of the first discharge port 37 and the lower part of the second discharge port 38 are provided with a collecting box 39, the screening assembly 36 comprises a screening drum 361 with an opening at the top, one end of the screening drum 361 is located in the discharge cavity 35, guide plates 362 are arranged obliquely on both sides of the top opening of the screening drum 361, the tops of the guide plates 362 are connected to the inner walls of the screening box 31, the inner side of the screening drum 361 is rotatably connected with a rotating roller 363, and the outer surface of the rotating roller 363 is an annular array There are several inclined blades 364, and one end of the blade 364 away from the rotating roller 363 is arranged close to the screening drum 361. The outer side of the screening box 31 is provided with a driving motor 365 for driving the rotating roller 363 to rotate; the bottom of the screening chamber 34 and the discharge chamber 35 are inclined, corresponding to the positions of the discharge port 1 37 and the discharge port 2 38 respectively, and form a guide slope to prevent the raw materials from accumulating inside. The raw materials after iron removal flow along the guide plate 362 to the screening drum 361. The driving motor 365 drives the rotating roller 363 and the blade 364 to rotate, and the transported raw materials fall between two adjacent blades 364, and the centrifugal force generated during the rotation removes impurities such as deflated grains, particles, and stones in the raw materials. During the continuous rotation, the raw materials flow into the discharge chamber 35, and the removed deflated grains, particles, and stones are discharged along the filter holes on the surface of the screening drum 361, concentrated in the screening chamber 34, and fall downward along the discharge port 2 38 into the collecting box 39.

[0038] The feeding mechanism 10 includes a feeding box 11 and a conical feeding hopper 12 connected to one end of the top thereof, a protective plate 13 is connected to the feeding box 11, and the inner cavity of the feeding box 11 of the protective plate 13 is divided into a protective cavity 14 and a feeding cavity 15, the conical feeding hopper 12 is connected to the feeding cavity 15, and a feeding opening 1a is provided on the bottom side of the feeding cavity 15 close to the protective plate 13, and the feeding cavity 15 is connected to the inner cavity of the iron removal box 21 through the feeding opening 1a, and an active spiral feeding rod 16 is rotatably connected in the feeding cavity 15, and driven spiral feeding rods 17 rotatably connected to the feeding box 11 are respectively provided on both sides of the active spiral feeding rod 16, and one end of the active spiral feeding rod 16 and the driven spiral feeding rod 17 respectively extend into the protective cavity 14, and one end of the active spiral feeding rod 16 is connected to a driving wheel 18, and the driven spiral feeding rod 17 is connected to the protective cavity 14. One end of the feed box 11 is connected to a driven wheel 19, which is connected to the driving wheel 18 through a belt. A driving motor 24 is installed on the outside of the feeding box 11, and the output shaft of the driving motor 24 is connected to the active spiral feeding rod 16; the discharge port 1a is located above the higher point of the magnetic suction plate 22 to increase the flow time of the raw materials. The two driven wheels 19 are staggered and driven by belts respectively. When the external raw materials are poured into the conical feed hopper 12, the driving motor 24 drives the active spiral feeding rod 16 to rotate, so that it synchronously drives the driving wheel 18 to rotate, and under the action of the belt, the two driven wheels 19 are driven to rotate synchronously, so that the driven spiral feeding rod 17 rotates, and the raw materials in the feeding cavity 15 are transported, which can improve the transportation efficiency, prevent the accumulation of raw materials, achieve uniform feeding, and improve the iron removal effect of the magnetic suction plate 22 from the side.

[0039] The implementation principle of this embodiment is as follows: when in use, the staff pours the raw materials to be removed from the conical feed hopper 12 into the feed box 11, and at this time, the driving motor 24 drives the active spiral feed rod 16 to rotate, so that it synchronously drives the active wheel 18 to rotate, and under the action of the belt, drives the two driven wheels 19 to rotate synchronously, so as to drive the driven spiral feed rod 17 to rotate, and evenly transport the raw materials, and transmit them to the top of the magnetic suction plate 22, and then the raw materials slide downward along the inclination angle of the magnetic suction plate 22, and the iron impurities contained therein are magnetically adsorbed by the magnetic suction plate 22, and the raw materials after iron removal flow into the screening drum 361 through the guide plate 362, and at this time the raw materials fall between the two adjacent blades 364, and drive the rotating roller 363 and the blade 364 to rotate under the action of the driving motor 1 365. The raw material after impurities removal flows into the discharge chamber 35, and the screened impurities such as deflated grains, particles and stones are discharged along the filter holes on the surface of the screening drum 361 and concentrated in the screening chamber 34, and fall downward along the discharge port 2 38 into the collecting box 39. After the magnetic plate 22 has been used for a period of time, a large amount of iron impurities are adsorbed on its surface. At this time, the electric push rod 241 cooperates with the guide rod 242 to drive the cleaning plate 23 to move on the surface of the magnetic plate 22, and the bottom of the cleaning plate 23 removes the iron impurities adsorbed on the surface of the magnetic plate 22, so that the iron impurities are concentrated on the inner side along the inclination angle of the V-shaped collecting port 27, and when it moves to the outside of the slot 25, the iron impurities are no longer magnetically adsorbed to the magnetic plate 22 and fall into the collecting bucket 5.

[0040] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An aquatic feed impurity removal device, comprising: A feeding mechanism (10), an iron removal mechanism (20) and a screening mechanism (30) are arranged in sequence from top to bottom, characterized in that the iron removal mechanism (20) comprises an iron removal box (21), a magnetic attraction plate (22) is obliquely arranged inside the iron removal box (21), a blanking end of the feeding mechanism (10) is located on the top of the magnetic attraction plate (22), a cleaning plate (23) is arranged on the surface of the magnetic attraction plate (22), a telescopic rod assembly (24) for driving the cleaning plate (23) to move back and forth is installed on one side of the iron removal box (21), and a notch (25) matching the cleaning plate (23) is opened on the other side, and a cover plate (26) is hinged on the outer side of the notch (25); A V-shaped collecting opening (27) is provided on a side of the cleaning plate (23) away from the telescopic rod assembly (24); when the telescopic rod assembly (24) drives the cleaning plate (23) to move toward the notch (25), the V-shaped collecting opening (27) is located outside the iron removal box (21).

2. The aquatic feed impurity removal device according to claim 1, characterized in that: The screening mechanism (30) comprises a screening box (31) and a frame (32) connected to the bottom thereof; the inner cavity of the screening box (31) is connected to the inner cavity of the iron removal box (21); a partition (33) is connected to the inside of the screening box (31); the partition (33) divides the inner cavity of the screening box (31) into a screening cavity (34) and a discharge cavity (35); the screening cavity (34) is connected to the inner cavity of the iron removal box (21); a screening assembly (36) is installed in the screening cavity (34); a discharge port 1 (37) is provided at the bottom of the screening cavity (34); a discharge port 2 (38) is provided at the bottom of the discharge cavity (35); and a collection box (39) is placed below the discharge port 1 (37) and the discharge port 2 (38).

3. The aquatic feed impurity removal device according to claim 2, characterized in that: The screening assembly (36) comprises a screening drum (361) with an opening at the top, one end of the screening drum (361) is located in the discharge chamber (35), guide plates (362) are obliquely arranged on both sides of the opening at the top of the screening drum (361), the top ends of the guide plates (362) are respectively connected to the inner walls of the screening box (31), the inner side of the screening drum (361) is rotatably connected to a rotating roller (363), the outer surface of the rotating roller (363) has a plurality of obliquely arranged blades (364) in a circular array, the blade (364) is arranged close to the screening drum (361) at one end away from the rotating roller (363), and a driving motor (365) for driving the rotating roller (363) to rotate is arranged on the outer side of the screening box (31).

4. The aquatic feed impurity removal device according to claim 1, characterized in that: The feeding mechanism (10) comprises a feeding box (11) and a conical feeding hopper (12) connected to one end of the top thereof; a protective plate (13) is connected to the feeding box (11); the inner cavity of the feeding box (11) and the protective plate (13) is divided into a protective cavity (14) and a feeding cavity (15); the conical feeding hopper (12) is connected to the feeding cavity (15); a feeding opening (1a) is provided on one side of the bottom of the feeding cavity (15) close to the protective plate (13); the feeding cavity (15) is connected to the inner cavity of the iron removal box (21) through the feeding opening (1a); an active spiral feeding rod (16) is rotatably connected to the feeding cavity (15); A driven screw feed rod (17) rotatably connected to the feed box (11) is respectively provided on both sides of the active screw feed rod (16); one end of the active screw feed rod (16) and the driven screw feed rod (17) respectively extend into the protective cavity (14); one end of the active screw feed rod (16) is connected to a driving wheel (18); one end of the driven screw feed rod (17) is connected to a driven wheel (19); the driven wheel (19) is respectively connected to the active wheel (18) via a belt; a second drive motor (4) is installed on the outer side of the feed box (11); the output shaft of the second drive motor (4) is connected to the active screw feed rod (16).

5. The aquatic feed impurity removal device according to claim 1, characterized in that: The telescopic rod assembly (24) comprises an electric push rod (241), guide rods (242) are provided on both sides of the electric push rod (241), and one end of the guide rod (242) and the electric push rod (241) are respectively connected to the cleaning plate (23).

6. The aquatic feed impurity removal device according to claim 1, characterized in that: A collecting bucket (5) is installed on the outer side of the iron removal box (21), and the collecting bucket (5) is located below the notch (25).