A corn ear grading and screening mechanism

Abstract

The utility model discloses a kind of corn ear grading screening mechanism, including screening room, still including through rotating member rotation connection on the observable door plate of screening room, detachably installed second collecting box on the both sides of screening room, detachably installed first collecting box on the screening room, fixedly connected in the feed hopper of screening room top, fixedly connected on the support frame of the inner wall of screening room, install screening subassembly on the support frame, install adjusting assembly on screening subassembly, install driving assembly on adjusting assembly, fixedly connected on the guide plate body of the inner wall of screening room. Through guide plate body, the accurate flow guide of corn ear to next level screening frame after each level screening is realized, under the premise of avoiding damage to corn ear, effectively correct its posture by arc-shaped protruding block, by arc-shaped flow guide groove, it is convenient for the corn ear after correction to enter smoothly and limit it, greatly improve the screening precision of each level, ensure the accuracy and efficiency of grading screening.

Description

Technical Field

[0001] This utility model relates to the field of screening mechanism technology, specifically a corn ear grading and screening mechanism. Background Technology

[0002] The corn cob is the ear of corn, which develops from the female inflorescence in the leaf axils in the middle of the corn plant. It is the core reproductive organ and harvested product of corn. Its structure mainly includes a cylindrical cob, multiple layers of green husks that tightly wrap around the cob, and corn kernels that are evenly distributed on the cob. The husks can protect the kernels from pests, diseases, and mechanical damage. As an important agricultural product, corn cobs can be divided into fresh-eating type and processing type according to their uses. A corn cob grading and screening device is a device suitable for grading the size of corn kernels.

[0003] In the existing technology, the corn cob grading and screening mechanism mostly adopts a multi-layer stacked screen design. Due to the lack of a posture correction mechanism for the corn cob, the corn cob is prone to be placed horizontally on the screen surface, and its equivalent diameter is larger than the actual longitudinal diameter, which causes deviation in the grading standard and results in insufficient grading accuracy. Utility Model Content

[0004] The purpose of this utility model is to provide a corn cob grading and screening mechanism to solve the problem mentioned in the background art that the existing corn cob grading and screening mechanisms mostly adopt a multi-layer stacked screen design. Due to the lack of an attitude correction mechanism, the corn cobs are easily placed horizontally, resulting in an equivalent diameter that is larger than the actual longitudinal diameter, causing a grading standard deviation and thus insufficient grading accuracy.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a corn cob grading and screening mechanism, including a screening chamber, an observable door panel rotatably connected to the screening chamber via a rotating component, a second collection box detachably installed on both sides of the screening chamber, a first collection box detachably installed on the screening chamber, a feed hopper fixedly connected to the top of the screening chamber, a support frame fixedly connected to the inner wall of the screening chamber, a screening component installed on the support frame, an adjustment component installed on the screening component, a drive component installed on the adjustment component, a guide plate body fixedly connected to the inner wall of the screening chamber, a guide groove opened on the guide plate body, a protrusion fixedly connected to the guide plate body, and a limiting component installed on the guide plate body. The guide plate body is used to guide the corn cobs after each screening stage to the next stage, the protrusion is used to correct the posture of the corn cobs, and the guide groove is used to limit the corn cobs after the posture has been corrected.

[0006] In the preferred embodiment of this technical solution, the guide channel is set in an arc shape, which facilitates the entry of the corrected corn cob.

[0007] In this preferred embodiment of the technical solution, the bumps are set in an arc shape, and the arc-shaped bumps are used to avoid damaging the corn cobs.

[0008] According to the preferred embodiment of this technical solution, the screening component includes a screening spring fixedly connected to the support frame at one end, a connecting ear fixedly connected to the other end of the screening spring, a screening frame fixedly connected to the inside of the connecting ear, a sieve hole opened on the screening frame, and a vibration motor fixedly connected to the screening frame. The vibration motor is used to generate vibration on the screening frame, the adjustment component is used to adjust the aperture size of the sieve hole, and the limiting component is used to guide and limit the corn ears falling from the sieve hole.

[0009] Based on the preferred embodiment of this technical solution, the angle of the support frame is set to a horizontal tilt of 5°, and there are three sets of screening frames. The three sets of screening frames are arranged in a trapezoidal staggered distribution inside the screening chamber. The second collection box is used to collect the corn ears that meet the grading requirements on the three sets of screening frames, and the first collection box is used to collect the corn ears screened out by the lowest screening frame.

[0010] Based on the preferred embodiment of this technical solution, the limiting component includes a central guide plate fixedly connected to both sides of the guide plate body and a nylon buffer curtain fixedly connected to the central guide plate at one end. The central guide plate and the nylon buffer curtain are used to guide and limit the corn ears falling from the screen holes, so that they enter the next screening frame.

[0011] In a preferred embodiment of this technical solution, the adjustment component includes a fixing strip fixedly connected to both sides of the screening frame, an adjustment plate slidably connected to the fixing strip, a self-locking screw rotatably connected to one side of the fixing strip, a connecting rod fixedly connected between the self-locking screws, and a fixing plate fixedly connected to both ends of the connecting rod. The other end of the nylon buffer curtain is fixedly connected to the fixing strip, and the adjustment plate is threadedly connected to the self-locking screw. The adjustment plate is used to adjust the aperture size of the screen holes, and the drive component is used to drive the self-locking screw to rotate.

[0012] According to the preferred embodiment of this technical solution, the drive assembly includes an L-shaped bracket fixedly connected to one end of the fixing bar, a light rod rotatably connected to the L-shaped bracket, a second bevel gear fixedly connected to one end of the light rod, a knob fixedly connected to the other end of the light rod, and a first bevel gear fixedly connected to one end of the self-locking screw. The first bevel gear meshes with the second bevel gear, and the knob is used to rotate the light rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. The guide plate body enables precise flow of corn ears after each screening to the next screening box. The arc-shaped protrusions effectively correct the posture of the corn ears without damaging them. The arc-shaped guide groove facilitates the smooth entry of the corrected corn ears and limits their movement, greatly improving the screening accuracy of each stage and ensuring the accuracy and efficiency of the grading screening.

[0014] 2. The corn cobs falling from the sieve holes are guided by a central guide plate to move along a preset trajectory, preventing them from deviating from the next screening frame. The nylon buffer curtain can cushion the impact of the falling corn cobs and reduce the posture disorder caused by bouncing. At the same time, the soft nylon material will not damage the corn cobs, ensuring that the corn cobs enter the next screening frame accurately and smoothly, reducing grading errors.

[0015] 3. The fixing bar in the adjustment assembly provides a stable sliding track for the adjustment plate. When the self-locking screw rotates, it drives the adjustment plate to move precisely, realizing flexible adjustment of the screen hole diameter. The connecting rod and the fixing plate ensure that multiple sets of self-locking screws operate synchronously, ensuring consistent movement of the adjustment plate and uniform hole diameter adjustment. It can adapt to the grading requirements of different sizes of corn ears without disassembling the screening frame, improving the versatility and ease of operation of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one embodiment of a corn ear grading and screening mechanism according to the present invention; Figure 2 This is a schematic diagram of the support frame structure of this utility model; Figure 3 This is a schematic diagram of the screening component structure of this utility model; Figure 4 This is a schematic diagram of the limiting component structure of this utility model; Figure 5 This is a schematic diagram of the adjustment component structure of this utility model.

[0017] Figure 6 This is a schematic diagram of the drive component structure of this utility model.

[0018] In the diagram: 1. Screening chamber; 21. Support frame; 22. Screening spring; 23. Connecting ear; 24. Screening frame; 25. Vibration motor; 26. Screen hole; 27. Guide plate body; 28. Guide channel; 29. ​​Protrusion; 31. Centered guide plate; 32. Nylon buffer curtain; 41. Fixing strip; 42. Adjusting plate; 43. Self-locking screw; 44. Connecting rod; 45. Fixing plate; 46. First bevel gear; 47. Smooth rod; 48. Knob; 49. Second bevel gear; 410. L-shaped bracket; 5. Observation door panel; 6. First collection box; 7. Second collection box; 8. Feed hopper. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-6 This utility model provides an embodiment of a corn ear grading and screening mechanism, including a screening chamber 1, an observable door panel 5 rotatably connected to the screening chamber 1 via a rotating component, second collection boxes 7 detachably installed on both sides of the screening chamber 1, a first collection box 6 detachably installed on the screening chamber 1, a feed hopper 8 fixedly connected to the top of the screening chamber 1, a support frame 21 fixedly connected to the inner wall of the screening chamber 1, a screening assembly installed on the support frame 21, an adjustment assembly installed on the screening assembly, a drive assembly installed on the adjustment assembly, a guide plate body 27 fixedly connected to the inner wall of the screening chamber 1, a guide groove 28 formed on the guide plate body 27, and a protrusion fixedly connected to the guide plate body 27. The guide plate body 27 and the limiting components installed on the guide plate body 27 are used to guide the corn ears after each screening to the next level. The protrusion 29 is used to correct the posture of the corn ears. The guide groove 28 is used to limit the corn ears after the posture is corrected. The grading situation in the screening chamber 1 can be monitored in real time through the observation door panel 5, which is convenient for timely adjustment of parameters. The collection and cleaning of corn ears of different grades can be completed quickly through the detachable second collection box 7 and the first collection box 6, reducing the risk of mixing grades. The feed hopper 8 ensures stable and orderly feeding of corn ears and avoids accumulation and blockage. Combined with the synergistic effect of the support frame 21, screening components and other core components, the grading and screening process is smoother and the overall screening efficiency and accuracy are effectively improved.

[0021] Please see Figure 4 A further solution based on this embodiment is as follows: the guide channel 28 is set in an arc shape. The arc-shaped guide channel 28 is used to facilitate the entry of the corrected corn cob. Through the arc-shaped guide channel 28, which fits the cylindrical structure of the corn cob, the corrected corn cob can slide in smoothly, reducing jamming or stagnation. At the same time, the arc-shaped structure can form a stable limit on the corn cob, preventing it from shifting its posture again during the guide process, providing a stable posture guarantee for subsequent grading and screening, and further improving the consistency of grading.

[0022] Please see Figure 4 A further solution based on this embodiment is: the protrusion 29 is set in an arc shape. The arc-shaped protrusion 29 is used to avoid damage to the corn ear. The arc-shaped protrusion 29 forms a soft contact surface when it comes into contact with the corn ear, which will not cause scratching or squeezing damage to the corn ear husk or kernel. Under the premise of protecting the integrity of the corn ear, it can smoothly guide the corn ear to adjust to the longitudinal posture, taking into account both the posture correction effect and the protection needs of agricultural products, and improving the quality of the graded corn ear.

[0023] Please see Figure 3A further solution based on this embodiment is as follows: The screening component includes a screening spring 22 fixedly connected to the support frame 21 at one end, a connecting ear 23 fixedly connected to the other end of the screening spring 22, a screening frame 24 fixedly connected to the inside of the connecting ear 23, a sieve hole 26 opened on the screening frame 24, and a vibration motor 25 fixedly connected to the screening frame 24. The vibration motor 25 is used to generate vibration on the screening frame 24. The adjustment component is used to adjust the aperture size of the sieve hole 26. The limiting component is used to guide and limit the corn ears falling from the sieve hole 26. The vibration motor 25 in the screening component drives the screening frame 24 to vibrate. With the elastic support of the screening spring 22, the corn ears are evenly distributed on the screening frame 24 to avoid local accumulation and affect the screening effect. The connecting ear 23 ensures a stable connection between the screening frame 24 and the screening spring 22. The sieve hole 26, as the core channel for grading, combined with the aperture adjustment function of the adjustment component and the guiding function of the limiting component, can achieve accurate grading and ensure that the corn ears fall in an orderly manner, thereby improving the stability and adaptability of the screening.

[0024] The screening component can also adopt other structures in the existing technology, such as a bidirectional spring, which replaces the screening spring 22. The advantages are: the bidirectional spring can provide more balanced bidirectional elastic support, making the vibration response of the screening frame 24 more stable, effectively reducing the offset or jamming of the screening frame 24 during the screening process, improving the uniformity of corn ear screening, and at the same time, its elastic reset performance is better, which can extend the service life of the component and further ensure the stability and efficiency of grading screening.

[0025] Please see Figure 2 A further solution based on this embodiment is as follows: the angle of the support frame 21 is set to a horizontal inclination of 5°, and three sets of screening frames 24 are provided. The three sets of screening frames 24 are arranged in a trapezoidal staggered distribution inside the screening chamber 1. The second collection box 7 is used to collect corn ears that meet the grading requirements on the three sets of screening frames 24, and the first collection box 6 is used to collect the corn ears screened by the bottom screening frame 24. The horizontally inclined support frame 21 provides an inclined installation foundation for the screening frames 24. Gravity assists the corn ears to move along the screen surface, prolonging the screening time and making the screening more thorough. The three sets of trapezoidal staggered screening frames 24 realize multi-level progressive grading. Then, the second collection box 7 and the first collection box 6 respectively collect corn ears of different levels, realizing orderly grading collection, avoiding mixing of corn ears of different grades, improving grading efficiency and collection convenience.

[0026] Please see Figure 4A further solution based on this embodiment is as follows: The limiting component includes a central guide plate 31 fixedly connected to both sides of the guide plate body 27 and a nylon buffer curtain 32 fixedly connected to the central guide plate 31 at one end. The central guide plate 31 and the nylon buffer curtain 32 are used to guide and limit the corn ears falling from the sieve hole 26, so that they enter the lower screening frame 24. The central guide plate 31 guides the corn ears falling from the sieve hole 26 to move along a preset trajectory to avoid deviating from the lower screening frame 24. The nylon buffer curtain 32 can buffer the impact force when the corn ears fall, reduce the posture disorder caused by bouncing. At the same time, the nylon material is soft and will not damage the corn ears, ensuring that the corn ears enter the lower screening frame 24 accurately and smoothly, reducing the grading error.

[0027] The limiting component can also adopt other structures in the existing technology, such as a central guide plate 31 with a buffer pad, or a central guide plate 31 with a buffer pad. The advantage of this is that the buffer pad can further buffer the impact force when the corn cob falls, avoid the corn cob from being scraped by the husk or the kernels from direct hard contact with the guide plate, reduce posture deviation, further ensure the stability of the next screening stage, and improve the overall grading accuracy.

[0028] Please see Figure 5 A further embodiment of this solution is as follows: the adjustment assembly includes a fixing strip 41 fixedly connected to both sides of the screening frame 24, an adjustment plate 42 slidably connected to the fixing strip 41, a self-locking screw 43 rotatably connected to one side of the fixing strip 41, a connecting rod 44 fixedly connected between the self-locking screws 43, and a fixing plate 45 fixedly connected to both ends of the connecting rod 44. The other end of the nylon buffer curtain 32 is fixedly connected to the fixing strip 41, and the adjustment plate 42 is threadedly connected to the self-locking screw 43. The adjustment plate 42 is used to adjust the sieve holes 26. The drive assembly is used to drive the self-locking screw 43 to rotate. The fixing bar 41 in the adjustment assembly provides a stable sliding track for the adjustment plate 42. When the self-locking screw 43 rotates, it drives the adjustment plate 42 to move precisely, realizing flexible adjustment of the aperture 26 of the sieve. The connecting rod 44 and the fixing plate 45 ensure that multiple sets of self-locking screws 43 operate synchronously, ensuring that the adjustment plate 42 moves in a consistent manner and the aperture is adjusted evenly. It can adapt to the grading requirements of different sizes of corn ears without disassembling the screening frame 24, improving the versatility and ease of operation of the equipment.

[0029] Please see Figure 6A further solution based on this embodiment is as follows: The drive assembly includes an L-shaped bracket 410 fixedly connected to one end of the fixed bar 41, a light rod 47 rotatably connected to the L-shaped bracket 410, a second bevel gear 49 fixedly connected to one end of the light rod 47, a knob 48 fixedly connected to the other end of the light rod 47, and a first bevel gear 46 fixedly connected to one end of the self-locking screw 43. The first bevel gear 46 meshes with the second bevel gear 49. The knob 48 is used to rotate the light rod 47. The L-shaped bracket in the drive assembly provides stable support for the light rod 47, ensuring stable transmission without deviation. The knob 48 facilitates manual rotation of the light rod 47. Through the meshing transmission of the first bevel gear 46 and the second bevel gear 49, the rotation of the light rod 47 is converted into the rotation of the self-locking screw 43. The transmission efficiency is high and the operation is labor-saving, making the adjustment process of the sieve hole 26 aperture more convenient and efficient, reducing the intensity of manual operation, and improving the ease of use of the equipment.

[0030] Working principle: First, the knob 48 of the drive assembly rotates the guide rod 47, which drives the self-locking screw 43 to rotate through the meshing transmission of the first bevel gear 46 and the second bevel gear 49. This causes the adjusting plate 42 to slide along the fixed strip 41, flexibly adjusting the aperture of the screen holes 26. This reduces the aperture of the screen frames 24, which are distributed in a staggered pattern from top to bottom, making it easy to adapt to different sizes of corn ears. Then, the observation door 5 is closed. After the corn ears enter the screening chamber 1 from the feed hopper 8, the screening operation is first carried out by the topmost screen frame 24, which is horizontally tilted at 5° by the support frame 21. Based on the installation foundation, and with the vibration of the screening frame 24 driven by the vibration motor 25 in the screening component and the elastic support of the screening spring 22, the corn ears are evenly dispersed on the screening frame 24 and move slowly along the inclined direction, fully completing the screening; the corn ears blocked by the screen holes 26 enter the second collection box 7 for collection. The corn ears falling from the screen holes 26 are first stably corrected in posture by the arc-shaped protrusions 29 on the guide plate body 27 (to avoid damaging the corn ears), and then limited by the arc-shaped guide groove 28 to ensure that the corn ears enter the screening area in a longitudinal posture; and the central guide of the limiting component. Guided by plate 31 and buffered by nylon buffer curtain 32, the corn cobs smoothly and accurately enter the next screening box 24, preventing some small-sized corn cobs from skipping the current corresponding screening segment. The three sets of screening boxes 24, which are arranged in a trapezoidal staggered pattern, realize multi-level progressive grading. The corn cobs that meet the requirements of each level of the screen hole 26 are collected by the second collection box 7 on both sides of the screening chamber 1. The corn cobs screened by the lowest screening box 24 are collected by the first collection box 6. At the same time, the operator can monitor the situation inside the screening chamber 1 in real time through the observation door plate 5 and adjust the parameters in a timely manner to ensure that the grading and screening are carried out efficiently and accurately.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corn cob grading and screening mechanism, comprising a screening chamber (1), characterized in that: It also includes an observable door panel (5) rotatably connected to the screening chamber (1) via a rotating component, a second collection box (7) detachably installed on both sides of the screening chamber (1), a first collection box (6) detachably installed on the screening chamber (1), a feed hopper (8) fixedly connected to the top of the screening chamber (1), a support frame (21) fixedly connected to the inner wall of the screening chamber (1), a screening component installed on the support frame (21), an adjustment component installed on the screening component, a drive component installed on the adjustment component, a guide plate body (27) fixedly connected to the inner wall of the screening chamber (1), a guide channel (28) opened on the guide plate body (27), a protrusion (29) fixedly connected to the guide plate body (27), and a limiting component installed on the guide plate body (27). The guide plate body (27) is used to guide the corn ears after each screening to the next level, the protrusion (29) is used to correct the posture of the corn ears, and the guide channel (28) is used to limit the corn ears after the posture is corrected.

2. The corn ear grading and screening mechanism according to claim 1, characterized in that: The guide channel (28) is set in an arc shape, and the arc-shaped guide channel (28) is used to facilitate the entry of the corrected corn cob.

3. The corn ear grading and screening mechanism according to claim 1, characterized in that: The bump (29) is set in an arc shape, and the arc-shaped bump (29) is used to avoid damage to the corn cob.

4. The corn ear grading and screening mechanism according to claim 1, characterized in that: The screening assembly includes a screening spring (22) fixedly connected to a support frame (21) at one end, a connecting ear (23) fixedly connected to the other end of the screening spring (22), a screening frame (24) fixedly connected to the inside of the connecting ear (23), a sieve hole (26) opened on the screening frame (24), and a vibration motor (25) fixedly connected to the screening frame (24). The vibration motor (25) is used to generate vibration on the screening frame (24), the adjustment assembly is used to adjust the aperture size of the sieve hole (26), and the limiting assembly is used to guide and limit the corn ears falling from the sieve hole (26).

5. A corn ear grading and screening mechanism according to claim 4, characterized in that: The support frame (21) is set to a horizontal tilt of 5°, and there are three sets of screening frames (24). The three sets of screening frames (24) are arranged in a trapezoidal staggered distribution inside the screening chamber (1). The second collection box (7) is used to collect the corn ears that meet the grading requirements on the three sets of screening frames (24), and the first collection box (6) is used to collect the corn ears screened out by the bottom screening frame (24).

6. The corn ear grading and screening mechanism according to claim 1, characterized in that: The limiting component includes a central guide plate (31) fixedly connected to both sides of the guide plate body (27) and a nylon buffer curtain (32) fixedly connected to the central guide plate (31) at one end. The central guide plate (31) and the nylon buffer curtain (32) are used to guide and limit the corn ears falling from the sieve hole (26) so that they enter the lower screening box (24).

7. The corn ear grading and screening mechanism according to claim 1, characterized in that: The adjustment assembly includes a fixing strip (41) fixedly connected to both sides of the screening frame (24), an adjustment plate (42) slidably connected to the fixing strip (41), a self-locking screw (43) rotatably connected to one side of the fixing strip (41), a connecting rod (44) fixedly connected between the self-locking screws (43), and a fixing plate (45) fixedly connected to both ends of the connecting rod (44). The other end of the nylon buffer curtain (32) is fixedly connected to the fixing strip (41). The adjustment plate (42) is threadedly connected to the self-locking screw (43). The adjustment plate (42) is used to adjust the aperture size of the sieve hole (26). The drive assembly is used to drive the self-locking screw (43) to rotate.

8. The corn ear grading and screening mechanism according to claim 1, characterized in that: The drive assembly includes an L-shaped bracket (410) fixedly connected to one end of the fixed bar (41), a light rod (47) rotatably connected to the L-shaped bracket (410), a second bevel gear (49) fixedly connected to one end of the light rod (47), a knob (48) fixedly connected to the other end of the light rod (47), and a first bevel gear (46) fixedly connected to one end of the self-locking screw (43). The first bevel gear (46) meshes with the second bevel gear (49), and the knob (48) is used to rotate the light rod (47).

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