Screening device for drying cereals

Abstract

The utility model discloses a screening device for grain drying, including base, the bottom of base is connected with the feeding hopper through the support seat, the lower portion of feeding hopper is provided with the feeding bin and the discharge bin respectively, and the screen plate is clamped and fixed through the connecting piece of outside between the feeding bin and the discharge bin. The utility model high -efficient steady screen: vibration motor provides sufficient power, and cylindrical spring auxiliary screen bin stable vibration prevents grain accumulation, accelerates screening, and simultaneously buffer impact reduces noise, prolongs life; the impurity is quickly slipped out after bin door opening, and spring resets automatically, and does not interrupt operation; quick -change screen plate: the nut is separated bin body and changes different aperture screen plate, and adapts multi -grain size grain, and the operation is simple and convenient; uniform screening: the connecting seat annular equidistance distribution, and spring support force is balanced, prevents screen bin deviation, and grain distribution is even, and screening is more pure; smooth feeding: hose connects the feeding bin and the feeding hopper, and adapts vibration amplitude, prevents blockage.

Description

Technical Field

[0001] This utility model relates to the field of grain processing technology, and in particular to a screening device for grain drying. Background Technology

[0002] In the grain drying process, screening is a crucial step for subsequent grading, storage, and processing, requiring the separation of broken grains, impurities, and whole grains of different sizes from the dried grain. Currently, grain screening devices on the market generally suffer from the following technical deficiencies: Low screening efficiency: Traditional devices have insufficient vibration intensity or a single vibration direction, which makes it easy for grains to accumulate on the screen plate, resulting in slow screening speed. In addition, some small grains are easy to get stuck in the screen holes, affecting the subsequent screening effect. Impurity removal is inconvenient: Impurities generated during screening (such as straw and broken grains) need to be manually cleaned after the machine is stopped. The operation is cumbersome and there are easy residues, which will affect the screening purity of the next batch of grain. The replacement of sieve plates is difficult: sieve plates are mostly fixed by bolts. When replacing sieve plates with different aperture sizes, multiple parts need to be disassembled, which is time-consuming and labor-intensive, and cannot quickly adapt to the screening needs of grains with different particle sizes.

[0003] In view of the shortcomings of the existing technology, there is an urgent need for a grain drying screening device with efficient vibrating screening, convenient impurity cleaning, quick screen plate replacement and stable vibration structure. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a grain drying screening device. The aim is to overcome the defects of existing grain screening devices, such as low screening efficiency, difficulty in cleaning impurities, cumbersome screen plate replacement, and unstable vibration. The proposed device provides a grain drying screening device with a compact structure, convenient operation, and good screening effect. By optimizing the vibration structure, impurity cleaning mechanism, and screen plate fixing method, it achieves efficient grain screening and flexible adaptation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A grain drying screening device includes a base, with a feeding hopper connected to the bottom of the base via a support seat. Below the feeding hopper, a feeding bin and a discharging bin are respectively provided. A screen plate is clamped and fixed between the feeding bin and the discharging bin via a connector located on the outer side. The upper end of the feeding bin is connected to the feed inlet at the lower end of the feeding hopper via a flexible hose. The lower end of the discharging bin is provided with a discharge port. A vibrating motor is installed on the side wall of the feeding bin. The bottom side of the discharging bin is connected to the base via an elastic mechanism.

[0006] Preferably, the elastic mechanism includes a lower connecting seat connected to the base and an upper connecting seat connected to the bottom of the upper hopper, and the upper connecting seat and the lower connecting seat are connected by a columnar spring.

[0007] Preferably, the connecting component includes a rotating seat rotatably connected to the upper connecting seat, a lead screw connected to the rotating seat, the lead screw passing through a triangular plate connected to the upper hopper and threaded with a nut.

[0008] Preferably, the side wall of the feeding hopper is provided with a slag discharge port, and a hopper door is provided at the slag discharge port. A pull rope is connected to the upper connecting seat nearby. The pull rope passes downward through the columnar spring, the lower connecting seat and the base and is connected to a foot pedal.

[0009] Preferably, the upper connecting seat and the lower connecting seat are arranged in a one-to-one correspondence and are distributed in a ring at equal intervals.

[0010] Compared with the prior art, the beneficial effects of this utility model are: Excellent screening efficiency and stability: The vibrating motor provides sufficient power for screening, and the elastic support of the column springs ensures stable vibration of the screening bin, avoids grain accumulation on the screen plate, and accelerates the passage of grains that meet the particle size requirements through the screen holes; at the same time, the column springs buffer the vibration impact, reduce equipment noise and component wear, and extend service life.

[0011] Impurity removal is convenient and requires no machine shutdown: the feeding hopper can be tilted by stepping on the foot pedal. After the hopper door is opened, the impurities quickly slide out of the discharge port along the inclined screen plate. After cleaning, the columnar spring can drive the screen hopper to automatically reset. No manual cleaning is required, which greatly improves the continuity and efficiency of operation.

[0012] The screen plate can be replaced quickly and is highly adaptable: simply loosen the nuts on the connector to release the constraints between the feed hopper and the discharge hopper, and quickly separate the two to replace the screen plate with a different aperture. There is no need to disassemble too many parts, and it can flexibly adapt to the screening needs of different grains such as wheat and rice.

[0013] Uniform force distribution and more uniform screening: The upper and lower connecting seats are equidistantly distributed in a ring, which makes the support force of the column spring on the screen chamber uniform, avoids the screen chamber from shifting during vibration, ensures that the grain is evenly distributed on the screen plate, reduces the problem of incomplete screening in some areas, and improves screening purity.

[0014] Smooth feeding connection and anti-clogging: The feeding hopper and the feeding bin are connected by a flexible hose, which can adapt to the vibration amplitude of the screening bin and avoid feeding blockage problems caused by rigid connections, ensuring a smooth connection between feeding and screening processes. Attached Figure Description

[0015] To illustrate the technical solutions in the embodiments of this utility model or the prior art more specifically and intuitively, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the structure proposed in this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the feeding hopper structure proposed in this utility model.

[0017] In the diagram: 1. Base; 2. Support seat; 3. Feed hopper; 4. Feed inlet; 5. Vibration motor; 6. Feeding bin; 7. Bin door; 8. Upper connecting seat; 9. Column spring; 10. Lower connecting seat; 11. Pull rope; 12. Foot pedal; 13. Feeding bin; 14. Screen plate; 15. Connector; 15. Nut; 151. Triangular plate; 152. Lead screw; 153. Rotating seat; 154. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figure 1-3 A grain drying screening device includes a base 1. The bottom of the base 1 is connected to a feeding hopper 3 via a support 2. A feeding bin 6 and a discharging bin 13 are respectively arranged below the feeding hopper 3. A screen plate 14 is clamped and fixed between the feeding bin 6 and the discharging bin 13 via a connector 15 located on the outside. The upper end of the feeding bin 6 is connected to the feed inlet 4 at the lower end of the feeding hopper 3 via a flexible hose. A vibration motor 5 is installed on the side wall of the feeding bin 6. The bottom side of the discharging bin 13 is connected to the base 1 via an elastic mechanism.

[0020] The elastic mechanism includes a lower connecting seat 10 connected to the base 1 and an upper connecting seat 8 connected to the bottom of the feeding bin 6. The upper connecting seat 8 and the lower connecting seat 10 are connected by a columnar spring 9. The columnar spring 9 not only provides flexible movement space for the vibration of the feeding bin 6 and the feeding bin 13, ensuring stable vibration of the screen bin when driven by the vibrating motor 5, but also buffers the impact force generated by the vibration, reducing vibration damage to the base 1 and the ground, while reducing the noise during equipment operation and creating a better working environment.

[0021] The connector 15 includes a rotating seat 154 rotatably connected to the upper connecting seat 8. A lead screw 153 is connected to the rotating seat 154. The lead screw 153 passes through a triangular plate 152 connected to the feeding hopper 6 and is threadedly connected to a nut 151. When it is necessary to replace the screen plate 14 with a different aperture to adapt to the screening of grains of different sizes, simply loosen the nut 151 to release the threaded constraint between the lead screw 153 and the triangular plate 152, so that the feeding hopper 6 and the discharging hopper 13 can be separated, the old screen plate 14 can be removed, and a new screen plate 14 can be replaced. After the replacement is completed, tighten the nut 151, and the lead screw 153 pulls the rotating seat 154, so that the feeding hopper 6 and the discharging hopper 13 tightly clamp the screen plate 14. The whole process does not require disassembling too many parts, the operation is quick and convenient, and the adaptability of the equipment is greatly improved.

[0022] The side wall of the feeding hopper 6 is equipped with a slag discharge port, and a hopper door 7 is installed at the slag discharge port. A pull rope 11 is connected to the upper connecting seat 8. The pull rope 11 passes downward through the columnar spring 9, the lower connecting seat 10, and the base 1 and is connected to a foot pedal 12. During the screening process, impurities (such as straw and granules) will remain on the screen plate 14. When the impurities accumulate to a certain amount, there is no need to stop the machine. Simply step on the foot pedal 12, and the pull rope 11 will pull the side of the feeding hopper 6 near the slag discharge port downward. At this time, the hopper door 7 is opened, and the impurities on the screen plate 14 will slide quickly out of the slag discharge port along the inclined surface under the action of gravity. After cleaning, release the foot pedal 12, and under the reset action of the columnar spring 9, the feeding hopper 6 returns to a horizontal state and continues the screening operation, effectively improving the efficiency of impurity cleaning and avoiding downtime from affecting the production progress.

[0023] The upper connecting seat 8 and the lower connecting seat 10 are arranged in a one-to-one correspondence and are distributed in a ring at equal intervals. The ring-shaped and equidistant layout ensures that the supporting force of multiple columnar springs 9 on the screen bin is evenly distributed, ensuring that the screen bin can vibrate stably in the vertical direction when the vibrating motor 5 is working, without any deviation or tilting. This, in turn, ensures that the grains on the screen plate 14 are evenly distributed, avoiding local accumulation that would lead to uneven screening. At the same time, the even force also reduces the wear of individual columnar springs 9, extending the overall service life of the elastic mechanism.

[0024] During grain screening, firstly, a screen plate 14 with an appropriate aperture is installed according to the particle size of the grain to be screened via connector 15; then, the vibrating motor 5 is started, and the dried grain is poured into the feeding hopper 3. The grain enters the feeding bin 6 through the feed inlet 4 and the hose, and falls onto the screen plate 14. Driven by the vibrating motor 5, the screening bins (feeding bin 6 + discharging bin 13) vibrate along the elastic direction of the columnar spring 9. Grains that meet the particle size requirements pass through the screen holes of the screen plate 14 and enter the discharging bin 13, and are finally discharged from the discharge port at the lower end of the discharging bin 13, completing the screening; impurities remaining on the screen plate 14 continue to accumulate.

[0025] When impurities need to be removed, the operator steps on foot pedal 12, pulling rope 11 to tilt the feeding bin 6 towards the discharge port, opening the bin door 7. Impurities slide out of the discharge port along the inclined screen plate 14. After cleaning, foot pedal 12 is released, the screen bin returns to its original position under the action of the columnar spring 9, the bin door 7 is closed, and screening operations continue.

[0026] Grains enter the feeding bin 6 from the feeding hopper 3 and fall onto the screen plate 14. Under the action of the vibrating motor 5, the grains are screened. The columnar spring 9 provides freedom of movement. The vibrating motor 5 accelerates the grains through the screen plate 14 and into the discharge bin 13 for discharge. After screening, impurities are removed. By stepping on the foot pedal 12, the screen plate 14 is tilted towards the bin door 7 to facilitate the rapid discharge of impurities. Moreover, by loosening the nut 151, the constraint between the lead screw 153 and the triangular plate 152 is released, and the feeding bin 6 and the discharge bin 13 can be separated. Screen plates 14 with different apertures can be replaced to improve their applicability.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A grain drying screening device, comprising a base (1), wherein a feeding hopper (3) is connected to the bottom of the base (1) via a support (2), characterized in that, Below the feeding hopper (3), there are feeding bins (6) and discharging bins (13). The feeding bins (6) and discharging bins (13) are clamped and fixed with screen plates (14) by connecting parts (15) located on the outside. The upper end of the feeding bin (6) is connected to the feed inlet (4) at the lower end of the feeding hopper (3) by a hose. The lower end of the discharging bin (13) is provided with a discharge port. The side wall of the feeding bin (6) is equipped with a vibration motor (5). The bottom side of the discharging bin (13) is connected to the base (1) by an elastic mechanism.

2. The grain drying screening device according to claim 1, characterized in that, The elastic mechanism includes a lower connecting seat (10) connected to the base (1) and an upper connecting seat (8) connected to the bottom of the upper hopper (6). The upper connecting seat (8) and the lower connecting seat (10) are connected by a columnar spring (9).

3. The grain drying screening device according to claim 2, characterized in that, The connector (15) includes a rotating seat (154) rotatably connected to the upper connecting seat (8), a lead screw (153) connected to the rotating seat (154), the lead screw (153) passing through a triangular plate (152) connected to the upper hopper (6) and threadedly connected to a nut (151).

4. The grain drying screening device according to claim 3, characterized in that, The side wall of the feeding hopper (6) is provided with a slag discharge port, and a hopper door (7) is provided at the slag discharge port. A pull rope (11) is connected to the upper connecting seat (8) nearby. The pull rope (11) passes through the column spring (9), the lower connecting seat (10) and the base (1) and is connected to the foot pedal (12).

5. The grain drying screening device according to claim 4, characterized in that, The upper connecting seat (8) and the lower connecting seat (10) are arranged in a one-to-one correspondence and are distributed in a ring at equal intervals.

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