Seed cleaning and screening machine

Abstract

The embodiment of the utility model discloses a seed cleaning and screening machine which comprises a screening drum, a rotating shaft is rotationally connected to the interior of the screening drum, two screening assemblies are welded to the outer surface of the rotating shaft respectively, and an output shaft of a driving motor is installed at the top of the rotating shaft; the screening assembly comprises a fixing ring welded to the rotating shaft, six separation rods are welded to the peripheral wall of the fixing ring, the separation rods are distributed in an equiangular mode relative to the central axis of the fixing ring, and the surface of each separation rod is connected with a screening plate in a sliding mode. Rotary screening is achieved while vibration screening is conducted, uniform distribution of materials is guaranteed through the design of the curved surfaces of the screen plates, the local material accumulation phenomenon is avoided, comprehensive and effective utilization of the screen surfaces is guaranteed, the whole screen surfaces are designed in a separated mode, the screen plates in all the areas can be detached independently, targeted cleaning can be conducted on the blocked areas conveniently, and the cleaning work process is simplified.

Description

Technical Field

[0001] This utility model relates to the field of seed processing technology, specifically to a seed cleaning and screening machine. Background Technology

[0002] A seed cleaning and screening machine is an agricultural machine specifically designed for cleaning and screening seeds to improve seed purity. Seed purity directly affects sowing quality and subsequent growth. Therefore, it is essential to clean seeds using professional screening equipment after harvesting. Its main structure consists of a vibrating motor and screens of different sizes, which can effectively remove impurities from the seeds. Larger impurities such as stems and soil will remain on the top screen with the largest aperture, while the seeds fall through the screen holes and are then separated by a second screen to remove smaller impurities such as debris and fruit shells. Finally, the purest seeds are screened out.

[0003] In practice, the vibrating motor is the main vibration source, driving the screen to vibrate and causing seeds and impurities to jump and move on the screen to achieve separation. However, due to the small size of the seed particles and their fuzzy surface, coupled with the high moisture content of impurities such as debris and soil, the friction coefficient between them is high. During the screening process, these factors cause seeds and impurities to easily stick together into small clumps, which can easily cause local accumulation when moving on the screen surface, resulting in uneven distribution and affecting screening efficiency. In addition, the existing screen surface adopts an integrated design. Once the screen holes are blocked, the cleaning work must be carried out on the entire screen surface, making it impossible to perform targeted, efficient, and rapid cleaning of specific areas. This not only increases the complexity of the cleaning operation but also increases the time cost. Utility Model Content

[0004] Therefore, this utility model provides a seed cleaning and screening machine to solve the problems of uneven material distribution, which affects screening efficiency, inability to perform local cleaning of the screen surface, and the relatively complex cleaning work in the prior art.

[0005] To achieve the above objectives, the embodiments of this utility model provide the following technical solutions:

[0006] A seed cleaning and screening machine includes a screen cylinder, a rotating shaft is rotatably connected inside the screen cylinder, two sets of screening components are welded to the outer surface of the rotating shaft, and the output shaft of a drive motor is installed on the top of the rotating shaft.

[0007] The screening assembly includes a fixed ring welded to a rotating shaft. Six dividing rods are welded to the peripheral wall of the fixed ring, and the dividing rods are equiangularly distributed about the central axis of the fixed ring. A screen plate is slidably connected to the surface of each dividing rod. Bolts threadedly connected to the dividing rods are provided on the surface of the screen plate. The screen plate and the fixed ring form a circle through the dividing rods.

[0008] As a preferred embodiment of this utility model, the screen cylinder has three discharge ports from top to bottom on its front side, and each discharge port is provided with an arc-shaped plate that is slidably connected to the screen cylinder. A locking rod is rotatably connected to one side of the outer surface of the arc-shaped plate. The two ends of the locking rod are bent. A locking block that is embedded and cooperates with the locking rod is welded to the surface of the screen cylinder.

[0009] In a preferred embodiment of this utility model, the two sets of screening components are arranged in parallel, the screen plate is configured as a filter screen structure, and the filter hole diameter of the upper screen plate is slightly larger than that of the lower screen plate.

[0010] As a preferred embodiment of this utility model, both the upper and lower surfaces of the sieve plate are designed as curved surfaces, and both sets of sieve components are configured to rotate via rotating shafts.

[0011] As a preferred embodiment of this utility model, a vibration motor is installed in the middle of the bottom of the screen cylinder, a limit rod is welded to the bottom edge of the screen cylinder, a spring is sleeved on the outside of the limit rod and welded to the bottom of the screen cylinder, and a base plate is inserted into the other end of the limit rod.

[0012] The embodiments of this utility model have the following advantages:

[0013] This invention uses a drive motor to rotate the screening component, which works in conjunction with a vibrating motor to achieve rotational screening while simultaneously vibrating. The curved design of the screen plate ensures that the material follows a complex trajectory along the curved surface during rotation, thus dispersing evenly on the screen surface upon falling. This effectively avoids localized material accumulation and ensures full and effective utilization of the screen surface. Furthermore, the entire screen surface adopts a detachable design, allowing each area's screen plate to be disassembled individually, facilitating targeted cleaning of clogged areas and greatly simplifying the cleaning process. Attached Figure Description

[0014] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0015] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0016] Figure 1 This is a schematic diagram of the overall structure in the embodiment of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the screening component structure in an embodiment of the present invention;

[0019] Figure 4 This is an exploded view of the screening component in an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the arc-shaped plate after it is closed in the embodiment of this utility model.

[0021] In the picture:

[0022] 1-Screen cylinder; 2-Rotating shaft; 3-Screening assembly; 4-Drive motor; 5-Arc plate; 6-Locking rod; 7-Locking block;

[0023] 101-Vibration motor; 102-Limit rod; 103-Spring; 104-Base plate.

[0024] 301-Fixing ring; 302-Separator rod; 303-Sieve plate; 304-Bolt. Detailed Implementation

[0025] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Please see Figures 1 to 5 This utility model provides a seed cleaning and screening machine, including a screen cylinder 1, a rotating shaft 2 rotatably connected inside the screen cylinder 1, two sets of screening components 3 are welded on the outer surface of the rotating shaft 2, and the output shaft of a drive motor 4 is installed on the top of the rotating shaft 2.

[0027] The screening assembly 3 includes a fixed ring 301 welded to the rotating shaft 2. Six dividing rods 302 are welded to the peripheral wall of the fixed ring 301, and the dividing rods 302 are distributed at equal angles about the central axis of the fixed ring 301. A screen plate 303 is slidably connected to the surface of each dividing rod 302. Bolts 304 threadedly connected to the dividing rods 302 are provided on the surface of the screen plate 303. The screen plate 303 forms a circle with the fixed ring 301 through the dividing rods 302.

[0028] like Figure 1 and Figure 5 As shown, the screen cylinder 1 has three discharge ports on its front side from top to bottom, and each discharge port is provided with an arc-shaped plate 5 that is slidably connected to the screen cylinder 1. A locking rod 6 is rotatably connected to the outer surface of one side of the arc-shaped plate 5. The two ends of the locking rod 6 are bent. The surface of the screen cylinder 1 is welded with a locking block 7 that is embedded and cooperates with the locking rod 6. The screen cylinder 1 is equipped with three slides, and each arc-shaped plate 5 can move independently along its own slide. When the arc-shaped plate 5 slides to the position of the discharge port and covers it, the two ends of the locking rod 6 are bent. When the locking rod 6 rotates, it can be embedded in the groove on the surface of the locking block 7 to close the discharge port and ensure that the material will not scatter during the screening process.

[0029] like Figure 2 As shown, a vibration motor 101 is installed in the middle of the bottom of the screen cylinder 1. A limit rod 102 is welded to the bottom edge of the screen cylinder 1. A spring 103 is welded to the bottom of the screen cylinder 1 and sleeved on the outside of the limit rod 102. The other end of the limit rod 102 is inserted into a base plate 104. The other end of the spring 103 is welded to the base plate 104. In this application, the spring 103 can be made of steel structural material with supporting strength. When the vibration motor 101 is started, it drives the screen cylinder 1 to vibrate up and down. The limit rod 102 slides on the base plate 104 to limit the movement path of the screen cylinder 1. The spring 103 can assist the vibration. When the vibration motor 101 is turned off, the spring 103 can support the entire screen cylinder 1 and the material inside it.

[0030] In practical use, it is mainly carried out in the following ways:

[0031] First, slide the screen plate 303 into the partition rod 302 along the perimeter of the fixing ring 301 in sequence, and then screw the screen plate 303 in place by rotating the bolt 304. The six screen plates 303, together with the six partition rods 302 and the fixing ring 301, form a complete circular screen surface.

[0032] Second, start the drive motor 4, and the rotating shaft 2 will drive the two sets of screening components 3 to rotate. The seeds enter from the top inlet of the screen cylinder 1 and pass through the two sets of screening components 3 in sequence for cleaning and screening. The largest impurity particles are left on the uppermost screen plate 303, and then pass through the second screen plate 303 to remove small particles of impurities. Finally, the selected seeds are left. When a certain area needs to be cleaned separately, rotate and unscrew the bolt 304 to remove the screen plate 303 of that area for cleaning.

[0033] Furthermore, such as Figure 1 and Figure 2 As shown, the two sets of screening components 3 are arranged in parallel, and the screen plate 303 is set as a filter screen structure. The filter hole diameter of the upper screen plate 303 is slightly larger than that of the lower screen plate 303.

[0034] The seeds undergo preliminary screening via the upper sieve plate 303. Large particles of impurities remain on the upper layer, while small particles of impurities and seeds fall to the lower layer through the filter holes of the upper sieve plate 303. The seeds then undergo secondary screening via the lower sieve plate 303 to separate the impurities. The selected seeds then pass through the filter holes of the lower sieve plate 303 and remain at the bottom layer.

[0035] The upper and lower surfaces of the sieve plate 303 are both designed as curved surfaces. Both sets of screening components 3 are rotated by the rotating shaft 2. After the drive motor 4 is started, the rotating shaft 2 drives the screening components 3 and the material on their surface to start rotating. During the rotation screening process, the material will make a complex motion trajectory along the curved surface, so that the material is more evenly dispersed, avoiding local material accumulation, ensuring the effective utilization of the entire sieve surface, and further improving the screening effect.

[0036] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A seed cleaning and grading machine characterized by, Including the screen cylinder (1), the inside rotation of screen cylinder (1) is connected with the rotating shaft (2), two groups of screen assembly (3) are welded on the outer surface of rotating shaft (2) respectively, the output shaft of driving motor (4) is installed on the top of rotating shaft (2); The screen assembly (3) includes a fixed ring (301) welded with the rotating shaft (2), six partition rods (302) are welded on the peripheral wall of the fixed ring (301) respectively, the partition rods (302) are equiangularly distributed about the central axis of the fixed ring (301), and the screen plate (303) is slidably connected to the surface of each partition rod (302), the surface of the screen plate (303) is respectively provided with a bolt (304) threadedly connected with the partition rod (302), and the screen plate (303) forms a circle through the partition rod (302) and the fixed ring (301).

2. A seed cleaning and grading machine according to claim 1, characterised in that, The front surface of the screen cylinder (1) is respectively provided with three discharge ports from top to bottom, and the arc-shaped plate (5) is slidably connected with the screen cylinder (1) at each discharge port, the lock rod (6) is rotatably connected to the outer surface of one side of the arc-shaped plate (5), the two ends of the lock rod (6) are bent, and the lock block (7) is embedded with the lock rod (6) and welded on the surface of the screen cylinder (1).

3. A seed cleaning and grading machine according to claim 1 wherein, The two groups of screen assembly (3) are distributed in parallel, the screen plate (303) is provided as a filter screen structure, and the filter hole diameter of the upper screen plate (303) is slightly larger than that of the lower screen plate (303).

4. A seed cleaning and grading machine according to claim 1 wherein, The upper and lower surfaces of the screen plate (303) are provided as curved surface structures, and the two groups of screen assembly (3) are rotatably connected through the rotating shaft (2).

5. A seed cleaning and grading machine according to claim 1 wherein, The vibration motor (101) is installed in the middle of the bottom of the screen cylinder (1), the limiting rod (102) is welded on the edge of the bottom of the screen cylinder (1), the spring (103) is sleeved with the limiting rod (102) and welded on the bottom of the screen cylinder (1), and the bottom plate (104) is inserted into the other end of the limiting rod (102).

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