Millet screening device

Abstract

The utility model relates to the technical field of screening, in particular to a millet screening device. Comprising a screening cylinder; a screen is arranged in the screening cylinder; the outer edge of the screen is connected to the inner wall of the screening barrel in an up-down moving mode through an elastic connecting assembly. A vibrating mechanism is arranged below the screen; the vibrating mechanism comprises a rotating shaft, a vibrating cylinder, a driving assembly and an auxiliary knocking assembly. The driving assembly periodically drives the vibration barrel and the screen to be away from each other firstly, so that the elastic connecting assembly and the vibration spring accumulate force, then the vibration spring releases force to drive the vibration barrel and the screen to be close to each other quickly, the vibration barrel drives the vibration rod to beat the screen from bottom to top through the vibration protrusions, and vibration is generated while vibration is generated. And meanwhile, the auxiliary knocking assembly provides knocking force which inclines upwards towards the axis of the rotating shaft for the screen, secondary knocking on the screen is achieved, the impurity particles are made to deviate upwards from the screen holes, and the impurity particles are prevented from blocking the screen holes and affecting the screening effect.

Description

Technical Field

[0001] The utility model relates to the technical field of screening, in particular to a millet screening device. Background Art

[0002] Millet is a grain made from the shell of sorghum or millet. It has a sweet taste and yellow color that enters the spleen. It has the function of nourishing the essence and replenishing the kidney qi. It is currently a major grain crop. In addition, when processing millet, large impurities such as dead grass contained in the millet need to be removed.

[0003] In the prior art, for example, the Chinese patent with the announcement number CN220514715U, entitled A screening device for millet processing, discloses a technical solution that, through the screening mechanism, the T-shaped slider and the T-shaped rod move under the support of the spring, and when moving, the support plate moves under the support of the T-shaped block, thereby driving the support frame and the filter plate to screen the millet. However, the particle size of some impurities may be consistent with the size of the sieve holes on the screening filter plate, and the impurity particles may get stuck in the sieve holes during the screening process, thereby affecting the subsequent screening. Utility Model Content

[0004] The utility model provides a millet screening device to solve the above problem.

[0005] The utility model adopts the following technical scheme: a millet screening device, comprising a screening cylinder; the screening cylinder is vertically arranged; a screen is coaxially arranged in the screening cylinder; the outer edge of the screen is connected to the inner wall of the screening cylinder by an elastic connecting assembly so as to move up and down; a vibration mechanism is arranged below the screen; and a flattening mechanism is arranged above the screen;

[0006] The vibration mechanism includes a rotating shaft, a vibrating cylinder, a driving assembly, and an auxiliary knocking assembly; the rotating shaft is coaxially arranged in the screening cylinder, and can slide up and down and rotate with the screen; the lower end of the rotating shaft is connected to a motor; the vibrating cylinder is coaxially arranged below the screen; the vibrating cylinder is slidably sleeved on the rotating shaft; a vibrating spring is connected between the vibrating cylinder and the rotating shaft; a plurality of vibrating rods are fixed to the upper end of the vibrating cylinder; the vibrating rods are arranged along the radial direction of the vibrating cylinder, and one end close to the vibrating cylinder is fixed to the upper end of the vibrating cylinder; a vibrating cam is fixed to the upper end of the vibrating rod;

[0007] The driving assembly is used to periodically drive the vibration cylinder and the screen to move away from each other first, so that the elastic connection assembly and the vibration spring accumulate force, and then the elastic connection assembly and the vibration spring release force to drive the vibration cylinder and the screen to move quickly together, so that the vibration cylinder drives the vibration rod to hit the screen from bottom to top through the vibration cam, while generating vibration, providing an upward vibration thrust for the impurity particles stuck in the screen holes, so as to prevent the impurity particles from blocking the screen holes and affecting the screening effect;

[0008] The auxiliary knocking assembly is arranged at the end of the vibration rod away from the vibration cylinder; the auxiliary knocking assembly is used to provide a knocking force inclined upward toward the axis of the rotating shaft to the screen when the vibration cylinder and the screen are close to each other quickly, after the vibration convex hits the screen, so as to achieve a second knock on the screen, so as to cause the impurity particles to deviate upward from the screen holes and improve the screening effect;

[0009] The flattening mechanism is used to flatten the millet on the screen to prevent the millet from piling up on the screen and affecting screening.

[0010] Furthermore, the driving assembly comprises an upper ring and a lower ring; the upper ring is coaxially arranged between the rotating shaft and the vibration cylinder and is located at the upper end of the vibration cylinder; the upper ring is fixed to the lower end of the screen, and the outer wall of the upper ring and the inner wall of the vibration cylinder are slidably matched; a plurality of driving protrusions are evenly distributed in an annular manner on the lower end surface of the upper ring; one end of the driving protrusion along the circumference of the upper ring is set as a force storage wall; the force storage wall is in an arc shape; the other end of the driving protrusion along the circumference of the upper ring is set as a force release wall; the force release wall is vertically arranged;

[0011] The lower ring is coaxially arranged between the rotating shaft and the vibration cylinder, and is located below the upper ring; the outer wall of the lower ring and the inner wall of the vibration cylinder are fixedly connected; the lower ring and the rotating shaft slide up and down to cooperate; a plurality of matching protrusions are evenly distributed on the upper end surface of the lower ring; the upper end of the matching protrusion is in the shape of an arc. The rotating shaft drives the lower ring to rotate, and the lower ring drives the matching protrusion to rotate. When the matching protrusion slides along the force storage wall, the vibration spring accumulates force, and drives the lower ring to drive the vibration cylinder to move downward, and the vibration cylinder drives the vibration rod to move downward. At the same time, the elastic connection component is deformed to accumulate force, and drives the screen to move up a certain distance, so that the vibration cylinder and the screen are away from each other. When the matching protrusion slides from the lower end of the force storage wall to the force release wall, the elastic connection component and the vibration spring release force to drive the vibration cylinder and the screen to approach quickly, so that the vibration cylinder drives the vibration rod to hit the screen from bottom to top through the vibration protrusion.

[0012] Furthermore, the auxiliary knocking assembly includes a knocking rod; the knocking rod is fixed at one end away from the vibration tube; the knocking rod is an elastic rod; a counterweight is fixed at one end of the knocking rod away from the vibration tube. When the vibration rod drives the knocking rod to move upward quickly, the counterweight makes the knocking rod bend downward, and when the vibration rod drives the vibration cam to knock the screen, the knocking rod is reset, so that the counterweight knocks the screen obliquely upward, achieving a second knock on the screen, causing the impurity particles to deviate upward from the screen hole, and improving the screening effect.

[0013] Furthermore, the flattening mechanism comprises a flat plate; the flat plate is arranged above the screen; the flat plate is arranged along the radial direction of the screen; a mounting cylinder is arranged at one end of the flat plate close to the rotating shaft; the mounting cylinder is sleeved on the rotating shaft, and the lower end is fixed on the screen; the outer wall of the mounting cylinder is fixedly connected to the flat plate. The rotation of the rotating shaft drives the flat plate to rotate, and the millet on the screen is flattened.

[0014] Furthermore, a feed quantity control component is provided above the spreading plate; the feed quantity control component is used for intermittently feeding millet onto the screen.

[0015] Furthermore, the feed control assembly includes two control disks; the two control disks are coaxially arranged up and down; the control disks are coaxially arranged in the screening cylinder; the upper control disk is fixed on the inner wall of the screening cylinder, and the lower control disk is fixed on the upper end of the rotating shaft; and the control disks are provided with a plurality of feeding holes spaced along the circumference of the screening cylinder. The millet is temporarily stored on the upper control disk, and the rotating shaft drives the lower control disk to rotate. When the feeding holes on the two control disks overlap, the millet falls from the feeding holes onto the screen.

[0016] Furthermore, the elastic connection assembly includes a connection cylinder; the connection cylinder is installed on the upper end of the inner wall of the screening cylinder by sliding up and down through a spline; an elastic ring is connected between the connection cylinder and the screen; and the elastic ring is in an arc shape.

[0017] Furthermore, a debris outlet and a material outlet are provided on the side wall of the screening cylinder; the debris outlet is located above the screen; and the material outlet is located at the bottom wall of the screening cylinder.

[0018] The beneficial effect is: when screening millet, the driving component periodically drives the vibration cylinder and the screen to move away from each other first, and the elastic connecting component and the vibration spring accumulate force, and then the vibration spring releases the force to drive the vibration cylinder and the screen to move quickly together, so that the vibration cylinder drives the vibration rod to hit the screen from bottom to top through the vibration cam, and while generating vibration, it provides an upward vibration thrust for the impurity particles stuck in the screen holes. At the same time, the auxiliary knocking component provides an upward knocking force on the screen that is inclined toward the axis of the rotating shaft, thereby achieving a second knock on the screen, causing the impurity particles to deviate from the screen holes upward, preventing the impurity particles from blocking the screen holes and affecting the screening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a structural schematic diagram of an embodiment of a millet screening device of the utility model;

[0021] Figure 2 A side view of an embodiment of the utility model;

[0022] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0023] Figure 4 for Figure 3 The enlarged view of point B in the middle;

[0024] Figure 5It is a schematic diagram of a screening cylinder, a spreading plate, and a screen according to an embodiment of the utility model;

[0025] Figure 6 A schematic diagram of the interior of a screening drum according to an embodiment of the present utility model;

[0026] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0027] Figure 8 A schematic diagram of a vibrating cylinder and a vibrating rod according to an embodiment of the present utility model;

[0028] Fig. 9 It is a schematic diagram of a connecting cylinder, an elastic ring, and a screen according to an embodiment of the utility model;

[0029] Fig.10 A schematic diagram of a connecting cylinder, an elastic ring, and a screen from another angle according to an embodiment of the utility model;

[0030] Fig.11 This is a schematic diagram of a control panel according to an embodiment of the present invention.

[0031] In the figure: 100, screening cylinder; 200, screen; 210, connecting cylinder; 220, elastic ring; 310, rotating shaft; 320, vibrating cylinder; 321, vibrating rod; 322, vibrating cam; 323, vibrating spring; 330, upper ring; 331, driving cam; 340, lower ring; 341, matching cam; 351, knocking rod; 352, counterweight; 410, spreading plate; 420, control panel; 421, feeding hole. DETAILED DESCRIPTION

[0032] The embodiments of the utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and should not be construed as limiting the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model.

[0033] The features of the terms "first" and "second" in the specification and claims of the utility model may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0034] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] An embodiment of a millet screening device of the utility model is as follows Figures 1 to 11 As shown: A millet screening device includes a screening drum 100; the screening drum 100 is arranged vertically. A screen 200 is coaxially arranged inside the screening drum 100. The outer edge of the screen 200 is connected to the inner wall of the screening drum 100 by an elastic connecting assembly so as to move up and down. The elastic connecting assembly includes a connecting drum 210. The connecting drum 210 is mounted on the upper end of the inner wall of the screening drum 100 by sliding up and down through a spline. An elastic ring 220 is connected between the connecting drum 210 and the screen 200. The elastic ring 220 is in an arc shape. A vibration mechanism is provided below the screen 200. A flattening mechanism is provided above the screen 200.

[0037] The vibration mechanism includes a rotating shaft 310, a vibration cylinder 320, a driving assembly, and an auxiliary knocking assembly. The rotating shaft 310 is coaxially arranged in the screening cylinder 100, and can slide up and down and rotate with the screen 200. A motor is connected to the lower end of the rotating shaft 310. The vibration cylinder 320 is coaxially arranged below the screen 200. The vibration cylinder 320 is slidably sleeved on the rotating shaft 310. A vibration spring 323 is connected between the vibration cylinder 320 and the rotating shaft 310. A plurality of vibration rods 321 are fixed to the upper end of the vibration cylinder 320. The vibration rods 321 are arranged radially along the vibration cylinder 320, and one end close to the vibration cylinder 320 is fixed to the upper end of the vibration cylinder 320. A vibration cam 322 is fixed to the upper end of the vibration rod 321.

[0038] The driving assembly is used to periodically drive the vibration cylinder 320 and the screen 200 to move away from each other first, so that the elastic connection assembly and the vibration spring 323 accumulate force, and then the elastic connection assembly and the vibration spring 323 release force to drive the vibration cylinder 320 and the screen 200 to quickly approach each other, so that the vibration cylinder 320 drives the vibration rod 321 to hit the screen 200 from bottom to top through the vibration convex 322, and while generating vibration, it provides an upward vibration thrust for the impurity particles stuck in the sieve hole to prevent the impurity particles from blocking the sieve hole and affecting the screening effect. The driving assembly includes an upper ring 330 and a lower ring 340. The upper ring 330 is coaxially arranged between the rotating shaft 310 and the vibration cylinder 320, and is at the upper end of the vibration cylinder 320. The upper ring 330 is fixed at the lower end of the screen 200, and the outer wall of the upper ring 330 and the inner wall of the vibration cylinder 320 are slidably matched. A plurality of driving convex 331 are evenly distributed on the lower end surface of the upper ring 330 in the shape of a ring 330. One end of the driving protrusion 331 along the circumference of the upper ring 330 is set as a force storage wall. The force storage wall is in an arc shape. The other end of the driving protrusion 331 along the circumference of the upper ring 330 is set as a force release wall. The force release wall is set vertically.

[0039] The lower ring 340 is coaxially arranged between the rotating shaft 310 and the vibration cylinder 320, and is located below the upper ring 330. The outer wall of the lower ring 340 is fixedly connected to the inner wall of the vibration cylinder 320. The lower ring 340 and the rotating shaft 310 slide and cooperate up and down. A plurality of matching protrusions 341 are evenly distributed on the upper end surface of the lower ring 340 in the shape of the upper ring 330. The upper end of the matching protrusion 341 is in the shape of an arc. The rotating shaft 310 drives the lower ring 340 to rotate, and the lower ring 340 drives the matching protrusion 341 to rotate. When the matching protrusion 341 slides along the force storage wall, the vibration spring 323 accumulates force, and drives the lower ring 340 to drive the vibration cylinder 320 to move downward, and the vibration cylinder 320 drives the vibration rod 321 to move downward. At the same time, the elastic connection component is deformed and accumulates force, and drives the screen 200 to move up a certain distance, so that the vibration cylinder 320 and the screen 200 are away from each other. When the mating protrusion 341 slides from the lower end of the force storage wall to the force release wall, the elastic connection assembly and the vibration spring 323 release force to drive the vibration cylinder 320 and the screen 200 to move quickly together, so that the vibration cylinder 320 drives the vibration rod 321 to hit the screen 200 from bottom to top through the vibration protrusion 322.

[0040] The auxiliary knocking assembly is arranged at one end of the vibration rod 321 away from the vibration cylinder 320. The auxiliary knocking assembly is used to provide a knocking force inclined upward toward the axis of the rotating shaft 310 to the screen 200 after the vibration cylinder 320 and the screen 200 are quickly approached and the vibration convex 322 hits the screen 200, so as to achieve a secondary knock on the screen 200, prompting the impurity particles to deviate upward from the sieve holes and improve the screening effect. The auxiliary knocking assembly includes a knocking rod 351. The knocking rod 351 is fixed at one end away from the vibration cylinder 320. The knocking rod 351 is an elastic rod. A counterweight block 352 is fixed to the end of the knocking rod 351 away from the vibration cylinder 320. When the vibration rod 321 drives the knocking rod 351 to move upward quickly, the counterweight block 352 causes the knocking rod 351 to bend downward. When the vibration rod 321 drives the vibration cam 322 to knock the screen 200, the knocking rod 351 is reset, so that the counterweight block 352 knocks the screen 200 obliquely upward, achieving a second knock on the screen 200, causing the impurity particles to deviate upward from the sieve holes, thereby improving the screening effect.

[0041] The flattening mechanism is used to flatten the millet on the screen 200 to prevent the millet from piling up on the screen 200 and affecting the screening. The flattening mechanism includes a flat plate 410. The flat plate 410 is arranged above the screen 200. The flat plate 410 is arranged radially along the screen 200. A mounting cylinder is provided at one end of the flat plate 410 close to the rotating shaft 310. The mounting cylinder is sleeved on the rotating shaft 310, and the lower end is fixed on the screen 200. The outer wall of the mounting cylinder is fixedly connected to the flat plate 410. The rotation of the rotating shaft 310 drives the flat plate 410 to rotate, and the millet on the screen 200 is flattened. A feed control assembly is provided above the flat plate 410. The feed control assembly is used to intermittently put millet onto the screen 200. The feed control assembly includes two control disks 420. The two control disks 420 are coaxially arranged up and down. The control disk 420 is coaxially arranged in the screening cylinder 100. The upper control disk 420 is fixed on the inner wall of the screening drum 100, and the lower control disk 420 is fixed on the upper end of the rotating shaft 310. A plurality of feeding holes 421 are arranged on the control disk 420 at intervals along the circumference of the screening drum 100. The millet is temporarily stored on the upper control disk 420, and the rotating shaft 310 drives the lower control disk 420 to rotate. When the feeding holes 421 on the two control disks 420 overlap, the millet falls from the feeding holes 421 onto the screen 200.

[0042] In this embodiment, a debris outlet and a material outlet are provided on the side wall of the screening drum 100. The debris outlet is located above the screen 200. The material outlet is located at the bottom wall of the screening drum 100.

[0043] In combination with the above embodiments, the use principle and working process of the utility model are as follows: start the motor to drive the rotating shaft 310 to rotate, temporarily store the millet on the upper control disk 420, and the rotating shaft 310 drives the lower control disk 420 to rotate. When the discharge holes 421 on the two control disks 420 overlap, the millet falls from the discharge holes 421 onto the screen 200.

[0044] The rotating shaft 310 drives the lower ring 340 to rotate, and the lower ring 340 drives the matching protrusion 341 to rotate. When the matching protrusion 341 slides along the force storage wall, the vibration spring 323 stores force, and drives the lower ring 340 to drive the vibration cylinder 320 to move downward, and the vibration cylinder 320 drives the vibration rod 321 to move downward. At the same time, the elastic connection component is deformed to store force, and drives the screen 200 to move up a certain distance, so that the vibration cylinder 320 and the screen 200 are separated from each other. When the matching protrusion 341 slides from the lower end of the force storage wall to the force release wall, the elastic connection component and the vibration spring 323 release force to drive the vibration cylinder 320 and the screen 200 to quickly approach each other, so that the vibration cylinder 320 drives the vibration rod 321 to hit the screen 200 from bottom to top through the vibration protrusion 322. When the vibration rod 321 drives the knocking rod 351 to move upward quickly, the counterweight block 352 causes the knocking rod 351 to bend downward. When the vibration rod 321 drives the vibration cam 322 to knock the screen 200, the knocking rod 351 is reset, so that the counterweight block 352 knocks the screen 200 obliquely upward, achieving a second knock on the screen 200, causing the impurity particles to deviate upward from the sieve holes, thereby improving the screening effect.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A millet screening device, characterized in that: It comprises a screening cylinder; the screening cylinder is arranged vertically; a screen is coaxially arranged in the screening cylinder; the outer edge of the screen is connected to the inner wall of the screening cylinder by an elastic connecting component so as to move up and down; a vibration mechanism is arranged below the screen; and a flattening mechanism is arranged above the screen; The vibration mechanism includes a rotating shaft, a vibration cylinder, a driving assembly, and an auxiliary knocking assembly; the rotating shaft is coaxially arranged in the screening cylinder, and can slide up and down and rotate with the screen; the vibration cylinder is coaxially arranged below the screen; the vibration cylinder is slidably sleeved on the rotating shaft; a vibration spring is connected between the vibration cylinder and the rotating shaft; a plurality of vibration rods are fixed on the upper end of the vibration cylinder; the vibration rods are arranged along the radial direction of the vibration cylinder, and one end close to the vibration cylinder is fixed to the upper end of the vibration cylinder; a vibration cam is fixed on the upper end of the vibration rod; The driving assembly is used to periodically drive the vibration cylinder and the screen to move away from each other, so that the elastic connection assembly and the vibration spring accumulate force, and then the elastic connection assembly and the vibration spring release force to drive the vibration cylinder and the screen to move quickly together, so that the vibration cylinder drives the vibration rod to hit the screen from bottom to top through the vibration convex; The auxiliary knocking assembly is arranged at one end of the vibration rod away from the vibration cylinder; the auxiliary knocking assembly is used to provide a knocking force on the screen that is inclined upward toward the axis of the rotating shaft after the vibration cylinder and the screen are quickly approached and the vibration convex hits the screen; The flattening mechanism is used to flatten the millet on the screen to prevent the millet from piling up on the screen and affecting screening.

2. A millet screening device according to claim 1, characterized in that: The driving assembly comprises an upper ring and a lower ring; the upper ring is coaxially arranged between the rotating shaft and the vibration cylinder and is located at the upper end of the vibration cylinder; the upper ring is fixed to the lower end of the screen, and the outer wall of the upper ring and the inner wall of the vibration cylinder are slidably matched; a plurality of driving protrusions are evenly distributed on the lower end surface of the upper ring; one end of the driving protrusion along the circumference of the upper ring is set as a force storage wall; the force storage wall is in an arc shape; the other end of the driving protrusion along the circumference of the upper ring is set as a force release wall; the force release wall is vertically arranged; The lower ring is coaxially arranged between the rotating shaft and the vibration cylinder, and is located below the upper ring; the outer wall of the lower ring and the inner wall of the vibration cylinder are fixedly connected; the lower ring and the rotating shaft are slidably matched up and down; a plurality of matching protrusions are evenly distributed on the upper end surface of the lower ring; the upper end of the matching protrusion is arc-shaped.

3. A millet screening device according to claim 2, characterized in that: The auxiliary knocking component comprises a knocking rod; the knocking rod is fixed at one end away from the vibration cylinder; the knocking rod is an elastic rod; a counterweight is fixed at one end of the knocking rod away from the vibration cylinder.

4. A millet screening device according to any one of claims 1 to 3, characterized in that: The flattening mechanism includes a flat plate; the flat plate is arranged above the screen; the flat plate is arranged radially along the screen; a mounting cylinder is provided at one end of the flat plate close to the rotating shaft; the mounting cylinder is sleeved on the rotating shaft and the lower end is fixed on the screen; the outer wall of the mounting cylinder is fixedly connected to the flat plate.

5. A millet screening device according to claim 4, characterized in that: A feed quantity control component is arranged above the spreading plate; the feed quantity control component is used for intermittently feeding millet onto the screen.

6. A millet screening device according to claim 2, characterized in that: The feed control assembly includes two control disks; the two control disks are coaxially arranged up and down; the control disks are coaxially arranged in the screening drum; the upper control disk is fixed on the inner wall of the screening drum, and the lower control disk is fixed on the upper end of the rotating shaft; a plurality of feed holes are distributed on the control disk along the circumference of the screening drum at intervals.

7. A millet screening device according to claim 6, characterized in that: The elastic connection assembly comprises a connection cylinder; the connection cylinder is installed on the upper end of the inner wall of the screening cylinder by sliding up and down through a spline; an elastic ring is connected between the connection cylinder and the screen; and the elastic ring is in an arc shape.

8. A millet screening device according to claim 7, characterized in that: A debris outlet and a material outlet are arranged on the side wall of the screening cylinder; the debris outlet is located above the screen; and the material outlet is located at the bottom wall of the screening cylinder.

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