A raw material screening device for feed processing and screening method thereof

Abstract

The present invention relates to the field of feed processing technology, and more specifically, to a raw material screening device for feed processing, comprising a chassis, a controller, a feed funnel and a recovery box, wherein the controller and the feed funnel are both arranged on the chassis, and the recovery box is arranged on the chassis. The chassis is provided with an input port, and the input port and the feed funnel are connected through a discharge pipe. The screening device also includes: a screening system, which is arranged in the chassis and is used to screen the feed; and a material extraction module, which is arranged on the chassis and connects the chassis and the recovery box and is used to discharge waste into the recovery box; the entire device has a high degree of automation, which not only improves the efficient screening of the feed, but also can realize automatic discharge, without the need for staff to manually stop the machine to discharge the feed, thereby shortening the screening cycle of the feed.

Description

Technical Field

[0001] The present invention relates to the technical field of feed processing, and more particularly to a raw material screening device for feed processing. Background Art

[0002] Feed is a general term for food for animals raised by all people. In a narrower sense, general feed mainly refers to the food of animals raised in agriculture or animal husbandry. Feed includes more than ten varieties of feed raw materials such as soybeans, soybean meal, corn, fish meal, amino acids, miscellaneous meal, whey powder, oils, meat and bone meal, grains, feed additives, etc. These raw materials are mixed with a lot of impurities. Before these raw materials are produced into feed, they need to be screened for impurities, which requires the use of screening devices.

[0003] The existing raw material screening device for feed processing has a simple structure and adopts a horizontal motion screening method, that is, the screen is controlled to move back and forth in the horizontal direction to screen the accumulated feed raw materials. The screening effect of the horizontal screening device is poor, and it is easy to have different screening effects on raw materials at different levels and the screening cycle is long. Summary of the Invention

[0004] The object of the present invention is to provide a raw material screening device for feed processing to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A raw material screening device for feed processing, comprising a chassis, a controller, a feed funnel, and a recovery box, wherein the controller and the feed funnel are both arranged on the chassis, the recovery box is arranged on the chassis, an input port is provided on the chassis, the input port and the feed funnel are connected through a discharge pipe, and the screening device further comprises:

[0007] a screening system, disposed in the chassis, for screening feed; and

[0008] The extraction module is arranged on the chassis and connects the chassis with the recycling box, and is used to discharge the waste into the recycling box;

[0009] The screening system comprises:

[0010] External material belt, movable arrangement inside the chassis;

[0011] An inner material belt is movably arranged in the chassis and located on the inner side of the outer material belt, and the input port is located on the inner side of the inner material belt;

[0012] There are two groups of guide rollers, each group of which has a plurality of guide rollers. A spacing area is provided between the outer material belt and the inner material belt. The two groups of guide rollers are symmetrically and movably arranged in the spacing area. A mounting seat is provided in the chassis, and a power element is provided on the mounting seat. The output end of the power element is coaxially connected to one of the guide rollers.

[0013] Screening execution components, which are arranged in groups and are equidistantly on the inner material belt, and are used to perform the action of screening the feed in the machine box; and

[0014] The receiving modules are divided into several groups and are all arranged in the chassis, and are used to receive the feed that meets the quality requirements discharged from the screening execution component.

[0015] A further technical solution of the present application: Each group of the screening execution components includes:

[0016] A screening plate is movably arranged on the inner side of the inner material belt, and a screen is provided on the screening plate, and the screening plate is L-shaped;

[0017] A telescopic member is provided on the inner side of the inner material belt, a guide rail is formed on the screening plate, a slider is movably provided in the guide rail, and the slider is connected to the telescopic member; and

[0018] The regulating structure is arranged between the chassis and the screening plate and is used to control the movement of the screening plate.

[0019] A further technical solution of the present application: the regulating structure includes:

[0020] A fixed head is provided on the outer material belt;

[0021] a limiting block, provided on the inner material strip and located on one side of the fixed head; and

[0022] The interference rod is movably arranged on the fixed head and the limit block. The interference rod and the fixed head are elastically connected. Several protrusions are symmetrically and equidistantly arranged in the chassis. The protrusions are located on the moving path of the interference rod. One end of the interference rod is movably connected to the screening plate.

[0023] A further technical solution of the present application is that a resistance reducing member is provided at one end of the screening plate close to the inner material belt, so as to reduce the friction resistance between the inner material belt and the screening plate.

[0024] The present application has a further technical solution: the telescopic member includes a fixed tube, a movable tube and an elastic member;

[0025] The fixed tube is arranged on the inner material belt, the movable tube is movably arranged on the fixed tube and the two are connected by an elastic member, and one end of the movable tube is connected to the slider.

[0026] The present application has a further technical solution: the material receiving module includes:

[0027] A material receiving plate is movably arranged on the chassis and located on the inner side of the inner material belt, and a through window is provided on the material receiving plate;

[0028] The material receiving net has one end hinged to the material receiving plate and a torsion spring is provided at the hinge;

[0029] An electric telescopic rod, which is arranged on the machine base and has an output end connected to the material receiving plate; and

[0030] The material receiving box is arranged on the machine base and located on one side of the material receiving plate.

[0031] The present application has a further technical solution: a pressure sensor is provided in the machine base, the pressure sensor is located on the moving path of the resistance rod, and the pressure sensor is electrically connected to the electric telescopic rod.

[0032] A further technical solution of the present application: the extraction module includes:

[0033] A material extraction seat is arranged in the chassis, and a plurality of material extraction heads are evenly spaced on the material extraction seat;

[0034] The fan is arranged on the chassis and connects the extraction seat and the recovery box;

[0035] A filter, placed inside the recycling bin; and

[0036] The grinding assembly is arranged between the recovery box and the fan. When the fan is working, the grinding assembly is controlled to work synchronously and grind the feed on the filter screen.

[0037] A further technical solution of the present application is as follows: the grinding assembly comprises:

[0038] Rotating blades, an air duct is provided between the fan and the recovery box, and the rotating blades are movably provided in a cavity formed in the air duct;

[0039] A sliding seat is movably arranged on the air duct and elastically connected thereto, wherein a second magnet is arranged on the sliding seat, and a plurality of blades of the rotor are provided with a first magnet that meets and repels the second magnet;

[0040] a roller seat movably disposed on the recycling box and connected to the sliding seat; and

[0041] There are several rolling wheels which are equidistantly and movably arranged on the roller seat.

[0042] A method for screening raw materials for feed processing, comprising the screening device in the above technical solution, wherein the specific steps of the screening method are as follows:

[0043] S100: Pour the feed into the feeding funnel, the feed is discharged into the chassis along the discharge pipe and falls on the inner wall of the inner material belt and accumulates;

[0044] S200: The controller controls the power element to operate, driving the guide roller to rotate. Under the action of the friction resistance between the guide roller and the outer material belt, the outer material belt and the inner material belt are driven to move synchronously. The friction resistance between the inner material belt and the feed is used to make the feed move at the bottom of the inner material belt, and at the same time drive the screening actuator to follow the movement of the inner material belt.

[0045] S300: When each group of screening execution components reaches the bottom of the inner material belt, it can scoop up the feed and move synchronously. The screening execution components can perform screening processing on the feed;

[0046] S400: Controlling the extraction module to discharge small particles of feed floating in the air inside the chassis during the screening process into the recovery box. Every time the screening execution component reaches the set position, it can control the receiving module to work for a period of time and receive the feed that meets the quality requirements discharged from the screening execution component to complete the feed screening work.

[0047] Compared with the prior art, the technical solution provided by the embodiments of the present invention has the following beneficial effects:

[0048] The embodiment of the present invention sets up a drawing module and a screening system, and utilizes a linkage structure to get rid of the traditional horizontal motion screening method and change it to a circular motion screening method. It can not only realize multiple screening and processing of accumulated feed, but also control the screening plate to swing repeatedly, thereby improving the screening effect of feed, and can also timely extract feed that does not meet the standards and discharge it into a recovery box. The whole device has a high degree of automation, which not only improves the efficient screening of feed, but also can realize automatic discharge, without the need for staff to manually stop the machine to discharge feed, thereby shortening the screening cycle of feed. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 Schematic diagram of the structure of a raw material screening device for feed processing according to an embodiment of the present invention;

[0050] Figure 2 Schematic diagram of the structure of the screening system in the raw material screening device for feed processing according to an embodiment of the present invention;

[0051] Figure 3 This is a schematic diagram of the structure of the feed processing raw material screening device enlarged at point A in an embodiment of the present invention;

[0052] Figure 4 Schematic diagram of the structure of the telescopic member in the raw material screening device for feed processing according to an embodiment of the present invention;

[0053] Figure 5 This is a structural schematic diagram of a material receiving module in a raw material screening device for feed processing according to an embodiment of the present invention;

[0054] Figure 6 This is a schematic diagram of the structure of the feed processing raw material screening device enlarged at point B in an embodiment of the present invention;

[0055] Figure 7 This is a schematic diagram of the structure of the feed processing raw material screening device enlarged at point C in an embodiment of the present invention;

[0056] Figure 8 Schematic diagram of the structure of the screening execution component in the raw material screening device for feed processing in an embodiment of the present invention.

[0057] Explanation of the numbers in the schematic diagram:

[0058] 1-chassis, 2-controller, 3-feed hopper, 4-fan, 5-recovery box, 6-input port, 7-discharge pipe, 11-external material belt, 12-inner material belt, 13-guide roller, 14-stepping motor, 15-mounting seat, 16-extraction seat, 17-extraction head, 18-receiving plate, 19-resistance rod, 20-fixed head, 21-screening plate, 22-screen, 23-roller, 24-limiting block, 25-fixed tube, 26-movable tube, 27-spring, 28-slider, 30-receiving net, 31-receiving box, 32-electric telescopic rod, 33-through window, 34-raised part, 35-pressure sensor, 36-cavity, 37-rotating blade, 38-No. 1 magnet, 39-sliding seat, 40-No. 2 magnet, 41-roller seat, 42-filter, 43-rolling wheel. DETAILED DESCRIPTION

[0059] The following will be combined with the accompanying 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 making creative efforts are within the scope of protection of the present invention. The present invention is further described below in conjunction with the embodiments.

[0060] See also Figures 1-8 In one embodiment of the present application, a raw material screening device for feed processing includes a chassis 1, a controller 2, a feed hopper 3, and a recovery box 5. The controller 2 and the feed hopper 3 are both arranged on the chassis 1, and the recovery box 5 is arranged on the chassis 1. The chassis 1 is provided with an input port 6, and the input port and the feed hopper 3 are connected through a discharge pipe 7. The screening device also includes:

[0061] A screening system, disposed in the housing 1, for screening feed; and

[0062] The extraction module is arranged on the chassis 1 and connects the chassis 1 with the recycling box 5, and is used to discharge the waste into the recycling box 5;

[0063] The screening system comprises:

[0064] The outer material belt 11 is movably arranged in the chassis 1;

[0065] The inner material belt 12 is movably arranged in the chassis 1 and located on the inner side of the outer material belt 11 , and the input port 6 is located on the inner side of the inner material belt 12 ;

[0066] There are two groups of guide rollers 13, each group of which has a plurality of guide rollers 13. A spacing area is provided between the outer material belt 11 and the inner material belt 12. The two groups of guide rollers 13 are symmetrically and movably arranged in the spacing area. A mounting seat 15 is provided in the chassis 1. A power element is provided on the mounting seat 15. The output end of the power element is coaxially connected to one of the guide rollers 13.

[0067] Screening execution components, which are arranged in groups and are equidistantly on the inner material belt 12, and are used to perform the action of screening the feed in the box 1; and

[0068] The receiving modules are divided into several groups and are all arranged in the chassis 1, and are used to receive the feed that meets the quality requirements discharged from the screening execution component.

[0069] It should be noted that the power element can be a stepper motor 14 or a servo motor. In this embodiment, the power element is preferably a stepper motor 14. The stepper motor 14 is arranged on a mounting seat 15 and its output end is connected to one of the guide rollers 13. As for the specific model parameters of the stepper motor 14, the best choice can be made according to actual conditions and no specific limitation is made here.

[0070] In a specific case of this embodiment, each group of the screening execution components includes:

[0071] A screening plate 21 is movably arranged on the inner side of the inner material belt 12, and a screen 22 is provided on the screening plate 21. The screening plate 21 is L-shaped;

[0072] A telescopic member is provided on the inner side of the inner material belt 12. A guide rail is formed on the screening plate 21. A slider 28 is movably provided in the guide rail. The slider 28 is connected to the telescopic member; and

[0073] The regulating structure is provided between the chassis 1 and the screening plate 21 and is used to control the movement of the screening plate 21 .

[0074] In another specific aspect of this embodiment, the regulating structure includes:

[0075] The fixed head 20 is provided on the outer material strip 11;

[0076] a limit block 24 , provided on the inner material strip 12 and located on one side of the fixing head 20 ; and

[0077] The interference rod 19 is movably arranged on the fixed head 20 and the limit block 24. The interference rod 19 and the fixed head 20 are elastically connected. Several protrusions 34 are symmetrically and equidistantly arranged in the chassis 1. The protrusions 34 are located on the moving path of the interference rod 19. One end of the interference rod 19 is movably connected to the screening plate 21.

[0078] In actual application, the feed is poured into the feed funnel 3, and the feed is discharged into the chassis 1 along the discharge pipe 7 and falls on the inner wall of the inner material belt 12 and accumulates; the controller 2 controls the power element to work, driving the guide roller 13 to rotate, and under the action of the friction resistance between the guide roller 13 and the outer material belt 11, the outer material belt 11 and the inner material belt 12 are driven to move synchronously, and the friction resistance between the inner material belt 12 and the feed is used to make the feed move at the bottom of the inner material belt 12, and at the same time drive the screening execution component to follow the movement of the inner material belt 12; in this process, the L-shaped screening plate 21 can be used to pick up the feed accumulated at the bottom of the inner material belt 12 and fall on the screen 22, and in this process, the resistance rod 19 successively meets the protrusions 34 at different positions, thereby driving the resistance rod 19 to reciprocate, and under the action of the telescopic member, it can drive the screening plate 21 to swing continuously, thereby improving the screening effect of the screen 22 on the feed, so that the small-particle feed floats in the chassis 1, and the small-particle feed can be discharged into the recovery box 5 by controlling the extraction module, and when the screening plate 21 moves to the position where everyone can, the feed falls under the action of its gravity, and the receiving module is controlled to work at the same time, so that the fallen feed that meets the quality standards is received and discharged from the chassis 1, thereby completing the entire screening work of the feed.

[0079] See also Figure 1-Figure 4 As another preferred embodiment of the present application, a resistance reducing member is provided at one end of the screening plate 21 close to the inner material belt 12 , so as to reduce the friction resistance between the inner material belt 12 and the screening plate 21 .

[0080] It should be noted that the resistance reducing member may be a ball or a roller 23 . In this embodiment, the resistance reducing member is preferably a roller 23 , and the roller 23 is movably disposed on the screening plate 21 .

[0081] In this embodiment, the telescopic member includes a fixed tube 25, a movable tube 26 and an elastic member;

[0082] The fixed tube 25 is disposed on the inner material belt 12 , and the movable tube 26 is movably disposed on the fixed tube 25 and connected therebetween via an elastic member. One end of the movable tube 26 is connected to the slider 28 .

[0083] Without limitation, the elastic member may be a spring 27, a spring sheet or an elastic steel plate structure. In the present embodiment, the elastic member is preferably a spring 27, which is connected between the movable tube 26 and the fixed tube 25. As for the specific model of the spring 27, the best choice can be made according to the actual situation, and no specific limitation is made here.

[0084] In actual application, by setting the roller 23, the friction resistance between the screening plate 21 and the inner material belt 12 can be reduced, and in the process of the resistance rod 19 and the protrusion 34 meeting and reciprocating, the screening plate 21 can be controlled to swing under the elastic connection between the movable tube 26 and the fixed tube 25, so as to screen the feed on the screen 22.

[0085] See also Figures 1-8 As another preferred embodiment of the present application, the material receiving module includes:

[0086] The receiving plate 18 is movably provided on the chassis 1 and located inside the inner material belt 12 , and a through window 33 is provided on the receiving plate 18 ;

[0087] The material receiving net 30 has one end hinged to the material receiving plate 18 and a torsion spring is provided at the hinge;

[0088] An electric telescopic rod 32 is provided on the machine base and its output end is connected to the receiving plate 18; and

[0089] The material receiving box 31 is arranged on the machine base and is located on one side of the material receiving plate 18 .

[0090] In this embodiment, for example, a pressure sensor 35 is provided in the base. The pressure sensor 35 is located on the moving path of the resisting rod 19 . The pressure sensor 35 is electrically connected to the electric telescopic rod 32 .

[0091] Of course, the present embodiment is not limited to the above-mentioned pressure sensor 35 to monitor the position of the interference rod 19. An infrared distance sensor or a laser distance sensor may also be used instead, which are not listed here one by one.

[0092] When the resistance rod 19 follows the movement of the outer material belt 11 and the inner material belt 12 and contacts the pressure sensor 35, the pressure sensor 35 is pressurized to control the operation of the material receiving module and resets after a period of time. During this process, the electric telescopic rod 32 is controlled to extend, driving the material receiving plate 18 and the material receiving net 30 to move toward the inside of the chassis 1. At this time, the feed that meets the quality standards discharged from the screening plate 21 can fall on the material receiving net 30, and then when the electric telescopic rod 32 shrinks and resets, the material receiving net 30 is separated from the support of the chassis 1. At this time, under the action of gravity of the material receiving net 30, it rotates along its hinge, and can discharge the feed on the material receiving net 30 into the material receiving box 31, thereby completing the discharge of feed that meets the quality standards.

[0093] See also Figures 1-8 As another preferred embodiment of the present application, the extraction module includes:

[0094] The material extraction seat 16 is provided in the chassis 1, and a plurality of material extraction heads 17 are evenly spaced on the material extraction seat 16;

[0095] The fan 4 is provided on the chassis 1 and connects the extraction seat 16 and the recovery box 5;

[0096] A filter 42 is provided in the recovery box 5; and

[0097] The grinding assembly is arranged between the recovery box 5 and the fan 4. When the fan 4 is working, it controls the grinding assembly to work synchronously and grinds the feed on the filter 42.

[0098] In this exemplary embodiment, the grinding assembly includes:

[0099] Rotating blades 37, an air duct is provided between the fan 4 and the recovery box 5, and the rotating blades 37 are movably provided in a cavity 36 formed in the air duct;

[0100] A sliding seat 4139 is movably mounted on the air duct and elastically connected thereto. A second magnet 40 is mounted on the sliding seat 4139. Several blades of the rotor 37 are provided with first magnets 38 that repel the second magnet 40.

[0101] A roller seat, movably disposed on the recovery box 5 and connected to the sliding seat 4139; and

[0102] There are several crushing wheels 43 , which are equidistantly and movably arranged on the roller seat.

[0103] It should be noted that this embodiment is not limited to the above-mentioned method of using the rotating blade 37, the first magnet 38 and the second magnet 40 to adjust the position of the sliding seat 4139. A linear motor or an electric cylinder can also be directly used instead, which are not listed here one by one.

[0104] In actual application, the controller 2 controls the operation of the fan 4, driving the extraction seat 16 to draw the small particles of feed floating in the chassis 1 into the extraction seat 16 and finally discharge them into the recovery box 5 along the air duct and fall on the filter 42. During this process, the airflow can drive the rotor 37 to rotate, so that the No. 1 magnet 38 successively meets and repels the No. 2 magnet 40, thereby driving the sliding seat 4139 and the roller seat to reciprocate in the horizontal direction, thereby driving the crushing wheel 43 to rotate and crush the feed on the filter 42, so as to facilitate the staff to carry out unified processing of the feed that does not meet the quality standards.

[0105] See also Figures 1-8 In another embodiment of the present application, a method for screening raw materials for feed processing includes the screening device in the above embodiment, and the specific steps of the screening method are as follows:

[0106] S100: Pour the feed into the feed hopper 3, the feed is discharged into the chassis 1 along the discharge pipe 7 and falls on the inner wall of the inner material belt 12 and accumulates;

[0107] S200: The controller 2 controls the power element to operate, driving the guide roller 13 to rotate. Under the action of the friction resistance between the guide roller 13 and the outer material belt 11, the outer material belt 11 and the inner material belt 12 are driven to move synchronously. The friction resistance between the inner material belt 12 and the feed is used to cause the feed to move at the bottom of the inner material belt 12, and at the same time, the screening actuator is driven to follow the movement of the inner material belt 12.

[0108] S300: When each group of screening execution components reaches the bottom of the inner material belt 12, it can scoop up the feed and move synchronously, and the screening execution components can perform screening processing on the feed;

[0109] S400: Controlling the extraction module to discharge the small particles of feed floating in the air in the chassis 1 during the screening process into the recovery box 5. Each time the screening execution component reaches the set position, it can control the receiving module to work for a period of time and receive the feed that meets the quality requirements discharged from the screening execution component to complete the screening of the feed.

[0110] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs a structure and embodiment similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

[0111] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A raw material screening device for feed processing, comprising a chassis, a controller, a feed hopper and a recovery box, wherein the controller and the feed hopper are both arranged on the chassis, the recovery box is arranged on the chassis, an input port is arranged on the chassis, and the input port and the feed hopper are connected through a discharge pipe, characterized in that: The screening device further comprises: a screening system, disposed in the chassis, for screening feed; and The extraction module is arranged on the chassis and connects the chassis with the recycling box, and is used to discharge the waste into the recycling box; wherein, The screening system comprises: External material belt, movable arrangement inside the chassis; An inner material belt is movably arranged in the chassis and located on the inner side of the outer material belt, and the input port is located on the inner side of the inner material belt; There are two groups of guide rollers, each group of which has a plurality of guide rollers. A spacing area is provided between the outer material belt and the inner material belt. The two groups of guide rollers are symmetrically and movably arranged in the spacing area. A mounting seat is provided in the chassis, and a power element is provided on the mounting seat. The output end of the power element is coaxially connected to one of the guide rollers. Screening execution components, which are arranged in groups and are equidistantly on the inner material belt, and are used to perform the action of screening the feed in the machine box; and The receiving modules are arranged in several groups in the chassis and are used to receive the feed that meets the quality requirements discharged from the screening execution assembly. The receiving modules include: A material receiving plate is movably arranged on the chassis and located on the inner side of the inner material belt, and a through window is provided on the material receiving plate; The material receiving net has one end hinged to the material receiving plate and a torsion spring is provided at the hinge; An electric telescopic rod is provided on the machine base and its output end is connected to the material receiving plate; and The material receiving box is arranged on the machine base and located on one side of the material receiving plate; Each group of screening execution components includes: A screening plate is movably arranged on the inner side of the inner material belt, and a screen is provided on the screening plate, and the screening plate is L-shaped; A telescopic member is provided on the inner side of the inner material belt, a guide rail is formed on the screening plate, a slider is movably provided in the guide rail, and the slider is connected to the telescopic member; and An adjusting structure is provided between the chassis and the screening plate and is used to control the movement of the screening plate; The regulating structure comprises: A fixed head is provided on the outer material belt; a limit block, provided on the inner material strip and located on one side of the fixed head; and An interference rod is movably arranged on the fixed head and the limit block, the interference rod and the fixed head are elastically connected, a plurality of protrusions are symmetrically and equidistantly arranged in the chassis, the protrusions are located on the moving path of the interference rod, and one end of the interference rod is movably connected to the screening plate; A pressure sensor is provided in the machine base, the pressure sensor is located on the moving path of the resistance rod, and the pressure sensor is electrically connected to the electric telescopic rod.

2. The feed processing raw material screening device according to claim 1, characterized in that: The end of the screening plate close to the inner material belt is provided with a resistance reducing member for reducing the friction resistance between the inner material belt and the screening plate.

3. The feed processing raw material screening device according to claim 2, characterized in that: The telescopic member includes a fixed tube, a movable tube and an elastic member; The fixed tube is arranged on the inner material belt, the movable tube is movably arranged on the fixed tube and the two are connected by an elastic member, and one end of the movable tube is connected to the slider.

4. The feed processing raw material screening device according to claim 1, characterized in that: The extraction module comprises: A material extraction seat is arranged in the chassis, and a plurality of material extraction heads are evenly spaced on the material extraction seat; The fan is arranged on the chassis and connects the extraction seat and the recovery box; A filter is provided in the recycling bin; and The grinding assembly is arranged between the recovery box and the fan. When the fan is working, the grinding assembly is controlled to work synchronously and grind the feed on the filter screen.

5. The feed processing raw material screening device according to claim 4, characterized in that: The grinding assembly comprises: Rotating blades, an air duct is provided between the fan and the recovery box, and the rotating blades are movably provided in a cavity formed in the air duct; A sliding seat is movably arranged on the air duct and elastically connected thereto, wherein a second magnet is arranged on the sliding seat, and a plurality of blades of the rotor are provided with a first magnet that meets and repels the second magnet; a roller seat movably disposed on the recycling box and connected to the sliding seat; and There are several rolling wheels which are equidistantly and movably arranged on the roller seat.

6. A method for screening raw materials for feed processing, comprising the screening device according to claim 1, characterized in that: The specific steps of the screening method are as follows: S100: Pour the feed into the feeding funnel, the feed is discharged into the chassis along the discharge pipe and falls on the inner wall of the inner material belt and accumulates; S200: The controller controls the power element to operate, driving the guide roller to rotate. Under the action of the friction resistance between the guide roller and the outer material belt, the outer material belt and the inner material belt are driven to move synchronously. The friction resistance between the inner material belt and the feed is used to make the feed move at the bottom of the inner material belt, and at the same time drive the screening actuator to follow the movement of the inner material belt. S300: When each group of screening execution components reaches the bottom of the inner material belt, it can scoop up the feed and move synchronously. The screening execution components can perform screening processing on the feed; S400: Controlling the extraction module to discharge small particles of feed floating in the air inside the chassis during the screening process into the recovery box. Every time the screening execution component reaches the set position, it can control the receiving module to work for a period of time and receive the feed that meets the quality requirements discharged from the screening execution component to complete the feed screening work.

Images