Seed grading vibrating screen

Abstract

The utility model relates to agricultural production technical field, concretely is a kind of seed grading vibrating screen sorting machine, including box, the top of the box is provided with feed inlet, the bottom of the box is slidably installed with dust collecting drawer, the outer wall of the box is fixedly installed with discharging frame, the inner wall of the box is slidably installed with screening frame, the bottom end of the screening frame is provided with sliding slot, the inner wall of the screening frame is fixedly installed with grading screen, the center end of the grading screen is fixedly installed with connecting seat, the bottom of the connecting seat is fixedly installed with vibrating motor, the utility model is limited in the elastic deformation range of buffer spring by the setting of square plate and buffer spring, the direct conduction of vibration to box is blocked, thereby eliminating the whole machine resonance phenomenon caused by the rigid connection of grading screen and machine body in traditional screen machine, substantially reduce the structure fatigue and component wear caused by machine body shaking, also can maintain equipment operation stability, avoid vibration energy loss.

Description

Technical Field

[0001] This utility model relates to the field of agricultural production technology, specifically a seed grading and vibrating screening machine. Background Technology

[0002] With the development of precision agriculture and stricter quality control in the seed industry, the market demand for equipment with high stability, intelligence and multi-stage screening functions has become prominent. At the same time, the upgrading of agricultural machinery in developing countries and the technological iteration in developed countries are further driving the expansion of the industry. However, the intensified competition has prompted companies to strengthen their technological research and development and differentiated service capabilities.

[0003] Existing technology, such as the seed vibration screening machine disclosed in publication number "CN219923652U", relates to the field of seed screening technology, specifically a seed vibration screening machine. It includes a housing, with a connecting shaft on the inner wall of the housing, a first bearing on the outer surface of the connecting shaft, a connecting sleeve on the outer surface of the first bearing, a support frame on the upper surface of the connecting sleeve, a connecting groove inside the support frame, and a filter screen plate slidably connected inside the connecting groove. An adjusting frame is provided on the inner side wall of the housing, with an electric push rod on the inner wall of the adjusting frame. A connecting ring is provided at the output end of the electric push rod, and a connecting slider is provided on the outer surface of the connecting ring. An adjusting groove is provided on the inner wall of the adjusting frame. This seed vibration screening machine, through the coordinated arrangement of the support frame, filter screen plate, adjusting frame, electric push rod, connecting ring, rotating shaft, and eccentric wheel, achieves the effect of convenient and quick installation and disassembly of the filter screen plate while easily adjusting the screen tilt angle.

[0004] However, current seed vibrating screening machines have the following problems: 1) The device uses an eccentric wheel for vibration, resulting in low vibration efficiency. Furthermore, when the eccentric wheel vibrates the sieve plates, the vibrating screening machine itself experiences excessive vibration from multiple sieve plates, leading to structural fatigue, accelerated component wear, and decreased sorting accuracy; 2) The inclined sieve plates roll to the bottom for collection, but uneven vibration can easily cause seeds to not be fully tumbled and screened, resulting in mixing of seeds of different sizes, reducing purity, and increasing the cost of secondary sorting. Therefore, we propose a seed grading vibrating screening machine. Utility Model Content

[0005] The purpose of this invention is to solve the problems of particle size mixing caused by vibration module driving machine body vibration and uneven vibration. This invention is a seed grading vibration screening machine.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A seed grading vibrating screening machine includes a housing, a feed inlet at the top of the housing, a dust collection tray slidably mounted at the bottom of the housing, a feeding frame fixedly mounted on the outer wall of the housing, a screening frame slidably mounted on the inner wall of the housing, a sliding groove at the bottom of the screening frame, a grading screen fixedly mounted on the inner wall of the screening frame, a connecting seat fixedly mounted at the center end of the grading screen, a vibrating motor fixedly mounted at the bottom of the connecting seat, square grooves at the upper and lower ends of the inner wall of the housing located at the screening frame, a material blocking device inside the housing, the material blocking device including several square plates, the square plates being grouped in pairs, with one group of square plates fixedly mounted on the upper and lower ends of the screening frame's outer wall and another group of square plates slidably mounted on the inner wall of the square grooves in the housing, and several buffer springs fixedly mounted at the bottom and top of each square plate.

[0008] Preferably, the material blocking device further includes a fixed plate, a rotating shaft, a baffle, a C-shaped rod, and an inclined block. The fixed plate is fixedly installed on the top of the bottom end of the screening frame. The rotating shaft is rotatably installed on the inner wall of the fixed plate. The baffle is fixedly installed on the outer wall of the rotating shaft. The C-shaped rod passes through and slides on the end of the feeding frame away from the box body. The inclined block is fixedly installed on the top of the C-shaped rod near the box body.

[0009] Preferably, the baffle is inclined, the C-shaped rod is inserted through and slidably installed in the slide groove of the screening frame and the inner wall of the box, and the bottom surface of the C-shaped rod is at a certain distance from the slide groove of the screening frame, and the top surface of the inclined block is in contact with the inclined surface of the baffle.

[0010] By employing the above technical solution, this utility model provides a seed grading and vibration screening machine. It possesses at least the following beneficial effects:

[0011] (1) By using a square plate and a buffer spring, the vibration of the screening frame is limited to the elastic deformation range of the buffer spring, thus blocking the direct transmission of vibration to the box. This eliminates the whole machine resonance phenomenon caused by the rigid connection between the grading screen and the machine body in traditional screening machines, greatly reduces the structural fatigue and component wear caused by machine body shaking, and can also maintain the stability of equipment operation and avoid vibration energy loss.

[0012] (2) This utility model, through precise control of the baffle, releases the baffle's restriction on the seeds in stages, ensuring that small-diameter seeds have passed through the sieve holes before releasing large-diameter seeds, thereby avoiding the problem of incomplete screening and mixing caused by excessively fast gravity rolling. While ensuring the freedom of vibration of the screening frame, this structure achieves controllable screening sequence through mechanical linkage, significantly improving the accuracy and purity of seed grading, while maintaining the continuity and stability of equipment operation. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0014] Figure 1 This is a front view schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a bottom view of the overall structure of this utility model;

[0016] Figure 3 This is a cross-sectional schematic diagram of the material blocking device in Embodiment 1;

[0017] Figure 4 This is an enlarged schematic diagram of point A in this embodiment 2.

[0018] In the diagram: 1. Box body; 11. Feed inlet; 12. Ash collection drawer; 13. Discharge frame; 14. Screening frame; 1401. Grading screen; 1402. Connecting seat; 1403. Vibrating motor; 2. Material blocking device; 21. Square plate; 22. Buffer spring; 23. Fixing plate; 24. Rotating shaft; 25. Baffle; 26. C-shaped long rod; 27. Inclined block. 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. Example

[0020] A seed grading and vibrating screening machine, such as Figures 1-3 As shown, the device includes a box body 1, with a feed inlet 11 at the top and a dust collection tray 12 slidably mounted at the bottom. A feeding frame 13 is fixedly mounted on the outer wall of the box body 1, and a screening frame 14 is slidably mounted on the inner wall of the box body 1. A sliding groove is provided at the bottom of the screening frame 14, and a grading screen 1401 is fixedly mounted on the inner wall of the screening frame 14. A connecting seat 1402 is fixedly mounted at the center end of the grading screen 1401, and a vibration motor 1403 is fixedly mounted at the bottom of the connecting seat 1402. Square grooves are provided on the inner walls of the box body 1 at the upper and lower ends of the screening frame 14. A material blocking device 2 is provided inside the box body 1. The material blocking device 2 includes several square plates 21, which are arranged in pairs. One pair of square plates 21 is fixedly mounted on the outer walls of the upper and lower ends of the screening frame 14, and another pair of square plates 21 is slidably mounted on the inner wall of the square groove of the box body 1. Several buffer springs 22 are fixedly mounted on the bottom and top of the square plates 21, respectively.

[0021] In use, the seed grading and vibrating screening machine of this utility model pours seeds into the housing 1 through the feed inlet 11 and simultaneously turns on the vibration motor 1403. The vibration motor 1403 drives the connecting seat 1402 to vibrate, the connecting seat 1402 drives the grading screen 1401 to vibrate, the grading screen 1401 drives the screening frame 14 to vibrate, and the screening frame 14 drives the square plate 21 and the buffer spring 22 to slide up and down slightly. By setting the square plate 21 and the buffer spring 22, the vibration of the screening frame 14 is limited to the elastic deformation range of the buffer spring 22, blocking the direct transmission of vibration to the housing 1. This eliminates the whole machine resonance phenomenon caused by the rigid connection between the grading screen 1401 and the machine body in traditional screening machines, greatly reduces structural fatigue and component wear caused by machine body vibration, and can also maintain the stability of equipment operation and avoid vibration energy loss. Example

[0022] This embodiment, based on embodiment 1, specifically includes the following:

[0023] like Figure 4 As shown, the material blocking device 2 also includes a fixed plate 23, a rotating shaft 24, a baffle 25, a C-shaped long rod 26, and an inclined block 27. The fixed plate 23 is fixedly installed on the top of the bottom end of the screening frame 14. The rotating shaft 24 is rotatably installed on the inner wall of the fixed plate 23. The baffle 25 is fixedly installed on the outer wall of the rotating shaft 24. The C-shaped long rod 26 passes through and slides on the end of the feeding frame 13 away from the box 1. The inclined block 27 is fixedly installed on the top of the C-shaped long rod 26 near the box 1.

[0024] The baffle 25 is inclined, and the C-shaped long rod 26 is inserted through and slidably installed in the groove of the screening frame 14 and the inner wall of the box 1. The bottom surface of the C-shaped long rod 26 is a certain distance from the groove of the screening frame 14, and the top surface of the inclined block 27 is in contact with the inclined surface of the baffle 25.

[0025] In the seed grading vibrating screening machine of this utility model, when the seeds are poured in, seeds of different sizes will roll downwards due to gravity. Even if the vibrating motor 1403 is started, a small number of smaller seeds may roll downwards with the larger seeds and be collected. At this time, the set baffle 25 can first block the seeds at the top of the grading screen 1401. The top of the baffle 25 slides on the inner wall of the feeding frame 13. At the same time, the inclined surface of the inclined block 27 will abut the baffle 25 to prevent it from opening. After grading for a period of time, the C-shaped long rod 26 is pulled downwards in sequence. The inclined block 27 moves downward, releasing its contact with the baffle 25. This allows the baffle 25 to drive the rotating shaft 24 to rotate downward on the fixed plate 23. The top of the inclined block 27 does not leave the bottom surface of the baffle 25, facilitating the subsequent pushback of the C-shaped rod 26. The gap between the C-shaped rod 26 and the sliding groove of the screening frame 14 does not affect the up-and-down sliding of the screening frame 14. Through precise control of the baffle 25, the restriction on seeds is released in stages, ensuring that small-diameter seeds have passed through the sieve holes before releasing larger-diameter seeds, thus avoiding incomplete sieving and mixing caused by excessively rapid gravity-induced rolling. This structure, while ensuring the vibration freedom of the screening frame 14, achieves controllable sieving sequence through mechanical linkage, significantly improving seed grading accuracy and purity, while maintaining the continuity and stability of equipment operation.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] 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 seed grading and vibrating screening machine, comprising a housing (1), characterized in that: The top of the box (1) is provided with a feed inlet (11), the bottom of the box (1) is slidably installed with a dust collection tray (12), the outer wall of the box (1) is fixedly installed with a feeding frame (13), the inner wall of the box (1) is slidably installed with a screening frame (14), the bottom end of the screening frame (14) is provided with a sliding groove, the inner wall of the screening frame (14) is fixedly installed with a grading screen (1401), the center end of the grading screen (1401) is fixedly installed with a connecting seat (1402), and the bottom of the connecting seat (1402) is fixedly installed with a vibrating electric motor. The machine (1403) has square grooves on the inner walls of the upper and lower ends of the screening frame (14). The inside of the box (1) is equipped with a material blocking device (2). The material blocking device (2) includes several square plates (21). The several square plates (21) are in groups of two. A group of square plates (21) is fixedly installed on the outer walls of the upper and lower ends of the screening frame (14). A group of square plates (21) is slidably installed on the inner wall of the square groove of the box (1). Several buffer springs (22) are fixedly installed at the bottom and top of the square plates (21).

2. The seed grading and vibrating screening machine according to claim 1, characterized in that: The material blocking device (2) also includes a fixed plate (23), a rotating shaft (24), a baffle (25), a C-shaped rod (26), and an inclined block (27). The fixed plate (23) is fixedly installed on the top of the bottom end of the screening frame (14). The rotating shaft (24) is rotatably installed on the inner wall of the fixed plate (23). The baffle (25) is fixedly installed on the outer wall of the rotating shaft (24). The C-shaped rod (26) passes through and slides on the end of the feeding frame (13) away from the box (1). The inclined block (27) is fixedly installed on the top of the C-shaped rod (26) near the box (1).

3. The seed grading and vibrating screening machine according to claim 2, characterized in that: The baffle (25) is inclined, the C-shaped rod (26) is inserted through and slidably installed in the groove of the screening frame (14) and the inner wall of the box (1), and the bottom surface of the C-shaped rod (26) is a certain distance from the groove of the screening frame (14), and the top surface of the inclined block (27) is in contact with the inclined surface of the baffle (25).

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