Grain screening module and screen

Abstract

This utility model relates to the field of grain screening technology, providing a grain screening module and a screener. The grain screening module includes a drive assembly, a main shaft, and a screening assembly. The drive assembly includes a mounting base, a main drive component, an output shaft, a drive disc, and a main support shaft. The drive disc is rotatably mounted on the mounting base. The main drive component is also mounted on the mounting base. One end of the output shaft is connected to the main drive component, and the other end is connected to the drive disc. The main support shaft is mounted on the drive disc and is eccentrically positioned relative to the output shaft. The main shaft is connected to the main support shaft. The screening assembly is mounted on the main shaft. Rotation of the main shaft drives the screening assembly to rotate. The screening assembly is used to screen out semi-clean grain. This utility model, through the eccentric setting of the output shaft and the main support shaft, enables the screening assembly to generate a non-linear rotation trajectory, effectively simulating the multi-dimensional operation of manual grain screening. This allows for multi-dimensional screening motion, improving screening efficiency, reducing impurity residue, and minimizing grain particle breakage.

Description

Technical Field

[0001] This utility model relates to the field of grain screening technology, and in particular to grain screening modules and screeners. Background Technology

[0002] In grain processing, converting raw grain into clean grain is a crucial step in ensuring product quality. Traditional screening methods primarily rely on mechanically vibrating screens to remove impurities. This method uses reciprocating vibrations at a fixed frequency to drive the screen's movement, separating foreign objects such as stones and straw. However, this type of vibrating screen mechanism has significant drawbacks: its movement pattern is limited to linear vibration in a single direction, failing to replicate the multi-dimensional trajectory and dynamic rhythm that manual grain screening involves flexible wrist adjustments. In manual operation, the screener can adjust the amplitude, frequency, and direction of the screening in real time based on the grain particle condition, achieving efficient and precise impurity separation and ensuring the quality of semi-clean grain. In contrast, mechanically vibrating screens, due to their rigid movement trajectory, result in low screening efficiency, high impurity residue rates, and the presence of insufficiently separated fine impurities in the semi-clean grain, affecting the accuracy of subsequent processing. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in related technologies. To this end, this invention proposes a grain screening module, designed to achieve multi-dimensional screening motion, improve screening efficiency, reduce impurity residue, and minimize grain particle breakage.

[0004] This utility model also proposes a filter.

[0005] The grain screening module according to a first aspect embodiment of the present invention includes: A drive assembly includes a mounting base, a main drive component, an output shaft, a drive disk, and a main support shaft. The drive disk is rotatably mounted on the mounting base. The main drive component is mounted on the mounting base. One end of the output shaft is connected to the main drive component, and the other end is connected to the drive disk. The main support shaft is mounted on the drive disk and is eccentrically positioned relative to the output shaft. Main shaft, which is connected to the main support shaft; A screening component is provided on the main shaft. The main shaft rotates to drive the screening component to rotate. The screening component is used to screen out semi-clean grains.

[0006] According to the grain screening module of this utility model embodiment, the eccentric setting of the output shaft and the main support shaft enables the screening component to generate a non-linear rotation trajectory, effectively simulating the multi-dimensional operation of manual grain screening, thereby overcoming the defect of the single motion mode of traditional screening equipment, realizing multi-dimensional screening motion, improving screening efficiency, reducing impurity residue, and reducing grain particle breakage.

[0007] According to one embodiment of the present invention, one end of the main support shaft is provided with a main support wheel, and the end face of the main support wheel is connected to the main shaft.

[0008] According to one embodiment of the present invention, a bearing plate is provided at the bottom of the main shaft, and the bearing plate is connected to the end face of the main support wheel.

[0009] According to one embodiment of the present invention, the drive assembly further includes a support structure, which is disposed on the side of the mounting base facing the main shaft. One end of the support structure is rotatably connected to the mounting base, and the other end is rotatably connected to the bearing plate. The support structure is adapted to rotate about the connection point with the mounting base as the center.

[0010] According to one embodiment of the present invention, one end of the support structure is provided with a secondary support wheel, and the end face of the secondary support wheel is connected to the bearing plate.

[0011] According to one embodiment of the present invention, the drive assembly includes a plurality of support structures, which are arranged at intervals around the drive disk.

[0012] According to one embodiment of the present invention, the screening component includes a first screen plate, a second screen plate, and a base plate. The first screen plate, the second screen plate, and the base plate are all connected to the main shaft. The second screen plate is located above the base plate, and the first screen plate is located above the second screen plate. The first screen plate has a plurality of first screen holes, and the second screen plate has a plurality of second screen holes. The diameter of the first screen holes is larger than the diameter of the second screen holes. The base plate has a storage groove on the side facing the second screen plate.

[0013] According to one embodiment of the present invention, a weighing sensor is provided on the first sieve plate, the second sieve plate, and the chassis.

[0014] According to one embodiment of the present invention, the grain screening module includes a plurality of screening components, which are arranged at circumferential intervals along the main axis.

[0015] According to a second aspect of the present invention, the screener includes a body and the above-described grain screening module, wherein the grain screening module is disposed on the body.

[0016] The screener according to the present invention includes the above-mentioned grain screening module, and therefore has all the technical effects of the above-mentioned grain screening module, which will not be repeated here.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the grain screening module provided in this embodiment of the utility model.

[0020] Figure 2 This is a schematic diagram of the connection structure between the drive assembly and the spindle provided in an embodiment of this utility model.

[0021] Figure 3 This is a schematic diagram of the structure of the driving component provided in an embodiment of the present invention.

[0022] Figure label: 2. Main shaft; 3. Screening assembly; 31. First screen plate; 32. Second screen plate; 33. Chassis; 4. Drive assembly; 41. Mounting base; 42. Main drive component; 43. Output shaft; 44. Drive plate; 45. Main support shaft; 451. Main support wheel; 46. Support structure; 461. Secondary support wheel. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0026] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0028] In grain screening processes, traditional vibrating screens can only achieve reciprocating vibration in one direction, which cannot reproduce the complex motion trajectory formed by the wrist swing during manual grain screening. This causes grain particles to clump on the screen surface, hindering the separation of impurities from grains, thus reducing screening accuracy and processing speed, and consequently affecting the quality of clean grain output and system operating efficiency.

[0029] Please refer to the following for details. Figures 1 to 3This application proposes a grain screening module, including a drive assembly 4, a main shaft 2, and a screening assembly 3. The drive assembly 4 includes a mounting base 41, a main drive component 42, an output shaft 43, a drive disk 44, and a main support shaft 45. The drive disk 44 is rotatably mounted on the mounting base 41. The main drive component 42 is mounted on the mounting base 41. One end of the output shaft 43 is connected to the main drive component 42, and the other end is connected to the drive disk 44. The main support shaft 45 is mounted on the drive disk 44, and the main support shaft 45 is eccentrically positioned with respect to the output shaft 43. The main shaft 2 is connected to the main support shaft 45. The screening assembly 3 is mounted on the main shaft 2. The rotation of the main shaft 2 drives the screening assembly 3 to rotate. The screening assembly 3 is used to screen out semi-clean grain.

[0030] The core of this application lies in the eccentric arrangement of the main support shaft 45 and the output shaft 43 in the drive assembly 4. In practical applications, the eccentric arrangement of the main support shaft 45 and the output shaft 43 refers to an arrangement in which the rotation center lines of the main support shaft 45 and the output shaft 43 are parallel but not coincident. This can be achieved by machining eccentric mounting holes on the drive disc 44 to fix the main support shaft 45. The main purpose is to ensure that the main support shaft 45 generates a non-rotational circular motion trajectory when the main drive component 42 drives the output shaft 43 to rotate. The screening assembly 3 refers to the component used to separate impurities from the grain. Further, it can be implemented using a rotary screen structure or a vibrating screen plate structure. For example, it can perform grading screening by opening regularly distributed screen holes on the screen surface, or it can achieve grain rolling screening by utilizing changes in the tilt angle of the screen plate. Its main purpose is to physically separate the grain when the main shaft 2 rotates to screen out semi-clean grain. In this embodiment, the drive assembly 4 includes a mounting base 41, a main drive component 42, an output shaft 43, a drive disk 44, and a main support shaft 45. The drive disk 44 is rotatably mounted on the mounting base 41, the main drive component 42 is mounted on the mounting base 41, one end of the output shaft 43 is connected to the main drive component 42, and the other end is connected to the drive disk 44. The main support shaft 45 is mounted on the drive disk 44. The main shaft 2 is connected to the main support shaft 45. The screening assembly 3 is mounted on the main shaft 2. Thus, when the main drive component 42 drives the output shaft 43 to rotate, the drive disk 44 rotates accordingly. The main support shaft 45 generates a composite motion trajectory due to its eccentric position, causing the main shaft 2 to form a wrist-swinging motion similar to manual grain sieving. Specifically, during the rotation of the main shaft 2, the grain undergoes a combined rolling and sieving motion on the surface of the screening assembly 3, avoiding the grain caking phenomenon caused by traditional shaking screens, and fully exposing the grain to the sieving area, thereby improving the efficiency of impurity separation. In a preferred embodiment, the rotation trajectory of the main shaft 2 is determined by an eccentricity setting parameter, which is set by adjusting the eccentricity between the main support shaft 45 and the output shaft 43, thereby ensuring that the motion mode of the screening component 3 closely approximates the characteristics of manual operation. This embodiment achieves effective simulation of manual grain screening actions through the above structure, overcoming the technical limitations of the single vibration mode of shaking screens.

[0031] In a preferred embodiment, the main drive component 42 can be a servo motor, the drive disk 44 can be a circular disk made of aluminum alloy, the main support shaft 45 can be an eccentrically positioned steel shaft, and the screening component 3 can be a screen structure with sieve holes. The screen structure is made of woven metal wire with uniformly distributed sieve holes to accommodate the screening requirements of grains of different sizes.

[0032] Therefore, this technical solution solves the problem that traditional vibrating screens cannot effectively simulate manual sieving. By using a composite trajectory vibration generated by eccentric drive, the grain is fully exposed to the screen openings, improving the accuracy and speed of sieving and overcoming the efficiency bottleneck caused by a single vibration mode. Furthermore, the eccentric motion characteristics ensure that the grain continues to roll during the sieving process, avoiding uneven sieving caused by insufficient or excessive vibration, and significantly improving the stability and reliability of the grain sieving process.

[0033] Please refer to the reference. Figure 2 and Figure 3 This application further proposes that one end of the main support shaft 45 is provided with a main support wheel 451, and the end face of the main support wheel 451 is connected to the main shaft 2.

[0034] Among them, the main support wheel 451 refers to a wheel-shaped support structure 46, which is used to optimize the force transmission relationship between the main support shaft 45 and the main shaft 2. It can be implemented by using rollers, bearings or cam structures, and can be made of metal or engineering plastic materials. Its purpose is to increase the contact area, disperse the radial impact force generated by eccentric rotation, and reduce local stress concentration.

[0035] Specifically, the solution of this application connects the end face of the main support wheel 451 to the main shaft 2, so that the radial force generated by the eccentric movement of the main support shaft 45 is evenly distributed to the entire end face area of ​​the main support wheel 451, avoiding stress concentration caused by direct rigid connection; at the same time, the main support wheel 451, as an intermediate transmission element, ensures that the force transmission path is evenly distributed along the axial direction, effectively suppressing the transmission of vibration to the screening component 3, and maintaining the coaxiality of the rotation of the main shaft 2, thereby ensuring the smooth operation of the screening process.

[0036] Through the above solution, this application effectively suppresses severe vibration and local wear during the rotation process, ensures the smooth rotation of the screening component 3, improves the grain screening efficiency, and extends the service life of the equipment.

[0037] This application further proposes that the bottom of the main shaft 2 is provided with a bearing plate, and the bearing plate is connected to the end face of the main support wheel 451.

[0038] The bearing plate refers to the disc-shaped support structure 46 set at the bottom of the main shaft 2. It can be made of metal or engineering plastic and is intended to disperse the periodic centrifugal force generated when the main shaft 2 rotates and absorb vibration energy, so as to prevent the main shaft 2 from shifting due to force concentration. The end face connection refers to the fixing method in which the bearing plate contacts the end plane of the main support wheel 451. It can be achieved by bolt fastening or welding process. Its purpose is to form a flat and uniform contact interface to avoid wear and vibration amplification that may be caused by point contact or local stress concentration.

[0039] Specifically, the solution of this application uses the eccentric setting of the main support shaft 45 and the output shaft 43 in the drive assembly 4 to make the main shaft 2 bear periodic centrifugal force. The bearing disk is set at the bottom of the main shaft 2 as a buffer structure and connected to the end face of the main support wheel 451, so that the bearing disk can effectively disperse the centrifugal force and absorb vibration energy. At the same time, the end face connection ensures that a continuous and flat contact surface is formed between the bearing disk and the main support wheel 451, reducing uneven friction and vibration transmission during rotation, thereby keeping the rotation of the main shaft 2 stable and maintaining the stable rotation state of the screening assembly 3, providing the basic conditions for accurately simulating the delicate actions of manual screening.

[0040] Through the above solution, this application effectively suppresses the vibration and uneven force caused by the eccentric rotation of the drive component 4, ensures the stability of the rotation of the main shaft 2 during the grain screening process, and enables the screening component 3 to continuously and smoothly screen out semi-clean grain, thereby improving the grain screening efficiency and realizing the efficient simulation of manual screening action.

[0041] In some embodiments described above, a structure is proposed in which the main shaft 2 is connected to the main support wheel 451 via a bearing disk. However, during its implementation, due to the eccentric setting of the drive disk 44, the main shaft 2 lacks sufficient radial support when rotating, resulting in increased shaking and vibration, affecting the grain screening accuracy and accelerating equipment wear. To address this, this application further proposes that the drive assembly 4 also includes a support structure 46. The support structure 46 is located on the side of the mounting base 41 facing the main shaft 2. One end of the support structure 46 is rotatably connected to the mounting base 41, and the other end is rotatably connected to the bearing disk. The support structure 46 is adapted to rotate about the connection point with the mounting base 41 as the center.

[0042] In practical applications, the support structure 46 refers to the mechanical component used to provide dynamic radial support. It can be implemented using a connecting rod, an arm-like frame, or an adjustable connecting rod structure. Its purpose is to directly act on the moving area of ​​the spindle 2 and provide an immediate response to radial fluctuations caused by eccentric rotation. Among them, the rotational connection can be understood as a connection method that allows relative rotation. Specifically, it can be implemented using rolling bearings, ball joints, or universal joints. Its purpose is to adapt to the trajectory changes of the spindle 2 during eccentric rotation and avoid stress concentration caused by rigid connections. The rotational characteristic of the support structure 46 with the connection point with the mounting base 41 as the center means that the movement trajectory of the structure is centered on the fixed connection point. Specifically, it can be designed as a pivoting mechanism or a swinging link. Its purpose is to ensure that the support force is dynamically coordinated with the movement of the spindle 2 during high-speed operation and maintain a continuous and stable support effect.

[0043] Specifically, the rotatable connection between one end of the support structure 46 and the mounting base 41 allows it to pivot freely around the connection point, thereby responding in real time to the radial displacement of the main shaft 2 caused by eccentric drive; the rotatable connection between the other end and the bearing plate ensures that the support structure 46 can move synchronously with the bearing plate, directly stabilizing the bottom of the main shaft 2; the rotational characteristics of the support structure 46 enable its movement trajectory to be dynamically coordinated with the eccentric rotation of the main shaft 2, forming a continuous support path during high-speed operation, effectively suppressing the transmission of vibration to the screening component 3, thereby ensuring the stability of the grain screening process.

[0044] This application further proposes that one end of the support structure 46 is provided with a secondary support wheel 461, and the end face of the secondary support wheel 461 is connected to the bearing plate.

[0045] The connection between the end face of the secondary support wheel 461 and the bearing plate can be understood as the end plane of the secondary support wheel 461 forming a surface contact relationship with the surface of the bearing plate. Specifically, a planar contact or a slightly convex surface fit can be adopted. The purpose is to achieve uniform load distribution by increasing the force-bearing area and avoid vibration and sway caused by local stress concentration.

[0046] This application further proposes that the drive assembly 4 includes multiple support structures 46, which are spaced apart around the drive disk 44.

[0047] In practical applications, multiple support structures 46 refer to multiple independent structural units used to support the bearing disk. They can be implemented using structures such as connecting rods, brackets, or rocker arms. Their purpose is to share the eccentric force from the drive disk 44 and avoid local overload. The arrangement of these support structures 46 around the drive disk 44 at intervals can be understood as these support structures 46 being evenly distributed along the circumference of the drive disk 44. They can be implemented using equal-angle intervals or non-equal-angle intervals. Their purpose is to ensure that the support points are symmetrically distributed so that the centrifugal force is evenly offset.

[0048] Specifically, the solution of this application arranges multiple support structures 46 around the drive disk 44 at intervals, so that when the drive disk 44 rotates, each support structure 46 can work together to share the dynamic load generated by the eccentric setting of the main support shaft 45. The rotational connection relationship between each support structure 46, the mounting base 41, and the bearing disk forms a stable force transmission path, thereby evenly distributing the centrifugal force to the entire support system, avoiding periodic vibration caused by uneven distribution of support points, and maintaining the dynamic balance of the grain screening module during rotation.

[0049] As a specific embodiment, the solution of this application is implemented as follows: the multiple support structures 46 can be specifically three connecting rods, which are evenly distributed along the circumference of the drive disk 44. One end of each connecting rod is rotatably connected to the mounting base 41 through a bearing, and the other end is rotatably connected to the bearing disk through a hinge structure. The main body of the connecting rod is made of rigid metal material to ensure structural stability.

[0050] Through the above solution, this application effectively suppresses the vibration phenomenon caused by eccentric force during the operation of the grain screening module, significantly improves the stability of the screening process and the reliability of equipment operation, thereby extending the service life of the grain screening module.

[0051] This application further proposes a screening component 3 including a first screening plate 31, a second screening plate 32, and a base plate 33. The first screening plate 31, the second screening plate 32, and the base plate 33 are all connected to the main shaft 2. The second screening plate 32 is located above the base plate 33, and the first screening plate 31 is located above the second screening plate 32. The first screening plate 31 has a plurality of first screening holes, and the second screening plate 32 has a plurality of second screening holes. The diameter of the first screening holes is larger than the diameter of the second screening holes. The base plate 33 has a storage groove on the side facing the second screening plate 32.

[0052] The first sieve 31 can be understood as the coarse sieve layer in the sieving process, which aims to intercept larger particles of impurities and prevent them from mixing into subsequent sieving stages. The second sieve 32 can be understood as the fine sieve layer in the sieving process, which aims to separate semi-clean grains of medium particle size. The aperture gradient design of the first and second sieve apertures can be understood as a key structural parameter for achieving graded sieving. It can be achieved by a progressively smaller aperture distribution or a partitioned aperture arrangement, with the aim of forming natural sieving levels based on particle size differences. The collection trough can be understood as a special structure for dust collection, which can be achieved by an annular groove or a partitioned dust collection chamber, with the aim of collecting fine impurities and preventing them from scattering. Thus, the yield of the raw grain can be calculated from the impurities and semi-clean grains screened out above.

[0053] Specifically, the scheme of this application uses the main shaft 2 to drive the screening assembly 3 to rotate as a whole. The raw grain passes through the first screening plate 31, the second screening plate 32, and the base plate 33 from top to bottom. Since the diameter of the first screening hole is larger than that of the second screening hole, larger particles of impurities are effectively intercepted by the first screening plate 31, while smaller grain particles and fine impurities fall into the second screening plate 32 through the first screening hole. In the second screening plate 32, medium-sized semi-clean grain is retained, while finer dust impurities fall into the base plate 33 through the second screening hole. The collection trough of the base plate 33 collects dust, and at the same time, gravity guides the grain to fall naturally, forming a continuous screening path from top to bottom, avoiding grain accumulation or blockage, thereby achieving the step-by-step separation of impurities.

[0054] Through the above technical solution, this application effectively achieves the graded screening and removal of impurities of different particle sizes, significantly improves screening efficiency and reduces grain loss. At the same time, through the combination of aperture gradient design and vertical layout, it simulates the gradual operation process of manual grain screening, ensuring that the impurity residue rate in semi-clean grain is reduced and the grain integrity is improved.

[0055] This application further proposes that weighing sensors are provided on the first sieve plate 31, the second sieve plate 32, and the chassis 33.

[0056] Among them, the weighing sensor refers to the sensing device used to detect changes in weight. It can be implemented using strain gauge, piezoelectric, or capacitive weighing sensors. Its purpose is to obtain the grain weight information of each layer of sieve in real time, providing basic data support for the grain screening process. The sensor is configured to convert the weight signal into an electrical signal output, which aims to ensure the accurate acquisition and transmission of weight data and avoid the impact of signal distortion on subsequent parameter adjustments.

[0057] Specifically, the solution in this application constructs a weight feedback closed loop for the grain screening process by integrating weighing sensors into each layer of the screening component 3. Weighing sensors are set on the first screening plate 31 to obtain the weight information of large particle impurities in real time, weighing sensors are set on the second screening plate 32 to continuously monitor the weight change trend of semi-clean grain, and weighing sensors are set on the base plate 33 to accurately confirm the weight of dust. Based on the above data, the completion of grain screening can be verified and a reliable basis can be provided for subsequent processes. Weighing sensors are set on all three layers to ensure the integrity and continuity of weight data, which is convenient for calculating the grain yield of raw grain.

[0058] As a specific implementation method, the solution of this application is implemented as follows: the weighing sensor can be a resistance strain gauge type weighing sensor, which is installed on the support structure 46 at the bottom of each sieve plate, and its signal output terminal is electrically connected to the control unit to realize the real-time transmission and processing of weight data.

[0059] This application further proposes that the above-mentioned grain screening module includes multiple screening components 3, which are arranged at circumferential intervals along the main axis 2.

[0060] Among them, multiple screening components 3 refers to setting two or more independent screening units, which can be implemented by three or four screening components 3 to improve screening throughput; the circumferential spacing along the main axis 2 can be understood as the screening components 3 being radially distributed in the circumferential direction of the main axis 2. They can be arranged in a way that is equally spaced or unequally spaced to adapt to different screening requirements and space constraints. The purpose is to break through the bottleneck of single-point processing by increasing the number of screening paths.

[0061] Specifically, the solution of this application arranges multiple screening components 3 at intervals along the circumference of the main shaft 2, so that when the main shaft 2 rotates, each screening component 3 synchronously receives grain and performs screening operations, and the grain is evenly distributed to each screening component 3, realizing multi-path parallel screening. At the same time, the main shaft 2, as the driving core, provides a balanced rotational driving force, ensuring that each screening component 3 does not interfere with each other during the movement and that the screening action is stable and continuous, thereby forming an efficient and collaborative screening system.

[0062] Through the above-mentioned solution, this application effectively improves the grain processing capacity per unit time, avoids interruptions in the screening process, and ensures that the grain screening operation can continuously and stably meet the needs of large-scale grain screening.

[0063] This application also discloses a screener, including a body and the aforementioned multi-layer grain screening module, wherein the multi-layer grain screening device is disposed in the body.

[0064] The core innovation of this embodiment lies in the constraint and positioning of the grain screening module by the machine body, combined with the rotational and vibration composite motion trajectory generated by the eccentric setting of the main support shaft 45 and the output shaft 43 in the grain screening module. This allows the screening component 3 to simulate the wrist rotation and slight shaking motion of manual grain screening, thereby effectively preventing grain caking and achieving graded screening, significantly improving screening efficiency and accuracy. Specifically, the machine body, as the basic support structure 46, provides a stable installation platform to ensure that the grain screening module maintains a fixed position and overall stability during operation, avoiding displacement or imbalance caused by vibration. Based on the eccentric setting of the main support shaft 45 and the output shaft 43, the grain screening module causes the main shaft 2 to generate a composite motion trajectory, driving the screening component 3 to simulate the action of manual grain screening. This composite motion is more effective in separating impurities than simple linear shaking. The multi-layer grain screening device, through the step-by-step screening mechanism of the first screening plate 31, the second screening plate 32, and the base plate 33, prioritizes screening out large particles of impurities and further separates fine impurities according to the difference in screen hole diameter, avoiding the problems of clogging or incomplete screening caused by a single screen. Because the machine body's constraint on the grain screening module enhances the controllability of the motion trajectory, the simulated manual actions generated by the eccentric drive can be executed stably. Therefore, in the processing of high-humidity raw grains, it effectively prevents grain particles from sticking together and forming a dense crust, allowing impurities to be fully exposed in the screening area, thereby improving screening accuracy and processing speed.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be covered within the scope of the claims of the present invention.

Claims

1. A grain screening module, comprising: include: A drive assembly includes a mounting base, a main drive component, an output shaft, a drive disk, and a main support shaft. The drive disk is rotatably mounted on the mounting base. The main drive component is mounted on the mounting base. One end of the output shaft is connected to the main drive component, and the other end is connected to the drive disk. The main support shaft is mounted on the drive disk and is eccentrically positioned relative to the output shaft. Main shaft, which is connected to the main support shaft; A screening component is provided on the main shaft. The main shaft rotates to drive the screening component to rotate. The screening component is used to screen out semi-clean grains.

2. The grain screening module of claim 1, wherein, One end of the main support shaft is provided with a main support wheel, and the end face of the main support wheel is connected to the main shaft.

3. The grain screening module of claim 2, wherein, The bottom of the main shaft is provided with a bearing plate, which is connected to the end face of the main support wheel.

4. The grain screening module of claim 3, wherein, The drive assembly also includes a support structure, which is located on the side of the mounting base facing the spindle. One end of the support structure is rotatably connected to the mounting base, and the other end is rotatably connected to the bearing plate. The support structure is adapted to rotate about the connection point with the mounting base as the center.

5. The grain screening module of claim 4, wherein, One end of the support structure is provided with a secondary support wheel, and the end face of the secondary support wheel is connected to the bearing plate.

6. The grain screening module of claim 4, wherein, The drive assembly includes a plurality of support structures, which are spaced apart around the drive disk.

7. The grain screening module of any one of claims 1 to 6, wherein, The screening assembly includes a first screen plate, a second screen plate, and a base plate. The first screen plate, the second screen plate, and the base plate are all connected to the main shaft. The second screen plate is located above the base plate, and the first screen plate is located above the second screen plate. The first screen plate has a plurality of first screen holes, and the second screen plate has a plurality of second screen holes. The diameter of the first screen holes is larger than the diameter of the second screen holes. The base plate has a storage groove on the side facing the second screen plate.

8. The grain screening module of claim 7, wherein, Weighing sensors are provided on the first sieve plate, the second sieve plate, and the chassis.

9. The grain screening module of claim 7, wherein, The grain screening module includes multiple screening components, which are arranged at circumferential intervals along the main axis.

10. A sieve characterized in that, It includes a body and a grain screening module as described in any one of claims 1 to 9, wherein the grain screening module is disposed on the body.

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