Multistage screening mechanism for rice seeds

Abstract

The utility model relates to the technical field of rice seed screening, and discloses a rice seed multistage screening mechanism which comprises a box body, a screening box is arranged in the box body, a plurality of screening structures are arranged in the screening box, and every two adjacent screening structures are distributed in a staggered mode. Each screening structure comprises a screening plate, two mounting blocks, two mounting grooves, two supporting blocks, a mounting plate, a fixing block, a fixing assembly and two cover plates. According to the screening mechanism, the two mounting blocks, the two mounting grooves, the two supporting blocks, the mounting plate and the cover plate are arranged, so that the screening plate can be quickly mounted and dismounted, the screening plate can be conveniently replaced or cleaned, and the screening effect of the screening mechanism after being used for a long time is ensured; and the mounting plate can be fixed through a fixing block and a fixing assembly, so that the sieve plate is fixed, the stability of the sieve plate after mounting is ensured, and the stability of the sieve plate during screening is ensured.

Description

Technical Field

[0001] This utility model relates to the field of rice seed screening technology, and in particular to a multi-stage rice seed screening mechanism. Background Technology

[0002] The growth quality of rice is closely related to many factors, among which the quality of seeds directly affects the growth and development of rice, yield, and the final quality of rice. Rice seed screening can ensure the purity and cleanliness of the seeds. Therefore, strict rice seed screening is a key link in ensuring the quality of rice.

[0003] According to Chinese Patent Publication No. CN222000737U, a multi-stage screening mechanism for rice seeds is proposed. This mechanism features a screening section with multiple screens arranged in a staggered pattern within a screening box. When rice seeds fall onto these screens, they undergo multi-stage screening, facilitating the separation of seeds of different sizes, weights, or shapes. This design not only improves the efficiency and accuracy of screening but also enhances the precision of seed screening, better meeting the high quality requirements of modern agriculture. Furthermore, the inclusion of a dust removal fan and filter bags, along with a closed design for the box and top cover, prevents dust accumulation during seed screening. Dust and other pollutants can be collected from the surrounding environment, which is beneficial to the health of workers. The collection section facilitates the collection of rice seeds from different screens, improving the convenience of seed collection and operation. This application document allows for multi-stage screening of rice seeds. However, in actual use, although the screening efficiency can be improved by using motors and drive plates, rice seeds still sometimes get stuck on the screens. If the screens cannot be cleaned or replaced quickly, the screening efficiency of the screening mechanism will be affected over time. Therefore, a multi-stage rice seed screening mechanism is proposed to solve the above problems. Utility Model Content

[0004] (a) Purpose of the utility model

[0005] To address the technical problems existing in the background art, this utility model proposes a multi-stage screening mechanism for rice seeds. By setting two mounting blocks, two mounting slots, two support blocks, a mounting plate, and a cover plate, the sieve plate can be quickly installed and disassembled, thereby facilitating the replacement or cleaning of the sieve plate and ensuring the screening effect of the screening mechanism after long-term use.

[0006] (II) Technical Solution

[0007] This utility model provides a multi-stage screening mechanism for rice seeds, including a box body, inside which a screening box is provided, and inside the screening box are multiple sets of screening structures, with adjacent sets of screening structures being staggered.

[0008] Each of the multiple sets of screening structures includes a sieve plate, two mounting blocks, two mounting slots, two support blocks, a mounting plate, a fixing block, a fixing component, and two cover plates. The sieve plate is slidably connected to the front of the screening box and extends into its interior. The two mounting blocks are respectively located on the left and right side walls of the inner cavity of the screening box. The two mounting slots are respectively opened on opposite sides of the two mounting blocks, and the front of the two mounting slots is connected to the outside. The two support blocks are respectively located on the left and right sides of the sieve plate and are slidably connected to the interior of the two mounting slots. The mounting plate is located on the front of the sieve plate. The fixing block is located at the bottom of the mounting plate. The fixing component is located on the front of the screening box, and the output end of the fixing component is connected to the fixing block. The two cover plates are hinged to the front of the box body by hinges, and the positions of the two cover plates correspond to the screening box.

[0009] Preferably, the fixing component includes a connecting block, a connecting groove, a slider, a movable groove, a movable plate, a driving module, a guiding module, a positioning block, and a positioning groove. The connecting block is located on the front of the screening box, the connecting groove is located on the left side of the connecting block, and the front of the connecting groove is connected to the outside. The slider is located on the right side of the fixing block and is slidably connected to the inside of the connecting groove. The movable groove is located on the right side wall of the inner cavity of the connecting groove. The movable plate is slidably connected to the inside of the movable groove. The driving module is located on the right side of the connecting block, and the output end of the driving module is connected to the movable plate. The guiding module is located on the outer end face of the movable plate. The positioning block is located on the left side of the movable plate, the positioning groove is located on the right side of the slider, and the positioning block and the positioning groove are slidably connected.

[0010] Preferably, the drive module includes a threaded rod and a knob. The threaded rod is located on the right side of the connecting block and extends into the interior of the movable groove. The threaded rod is threadedly connected to the connecting block. The left side of the threaded rod is rotatably connected to the right side of the movable plate. The knob is located on the right side of the threaded rod.

[0011] Preferably, the guiding module includes two guide blocks and two guide grooves. The two guide blocks are respectively disposed at the top and bottom of the movable plate, and the two guide grooves are respectively opened on the inner top wall and inner bottom wall of the movable groove. The two guide blocks are slidably connected to the interior of the two guide grooves.

[0012] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0013] This multi-stage rice seed screening mechanism features two mounting blocks, two mounting slots, two support blocks, a mounting plate, and a cover plate, allowing for quick installation and disassembly of the sieve plate. This facilitates sieve plate replacement or cleaning, ensuring the screening effect even after prolonged use. The mounting plate is secured by fixing blocks and components, thus fixing the sieve plate and ensuring its stability after installation and during screening. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a multi-stage screening mechanism for rice seeds proposed in this utility model.

[0015] Figure 2 This is a cross-sectional view of the box and its internal structure in a multi-stage rice seed screening mechanism proposed in this utility model.

[0016] Figure 3 This is a first cross-sectional view of the screening box and its internal structure in a multi-stage screening mechanism for rice seeds proposed in this utility model.

[0017] Figure 4 This is a second cross-sectional view of the screening box and its internal structure in a multi-stage screening mechanism for rice seeds proposed in this utility model.

[0018] Figure 5 This utility model proposes a multi-stage screening mechanism for rice seeds. Figure 2 A magnified view of A in the middle.

[0019] Figure 6 This is a cross-sectional view of the fixing block and fixing components in a multi-stage rice seed screening mechanism proposed in this utility model.

[0020] Reference numerals: 1. Box body; 2. Screening box; 3. Screening structure; 31. Screen plate; 32. Mounting block; 33. Mounting groove; 34. Support block; 35. Mounting plate; 36. Fixing block; 37. Fixing component; 371. Connecting block; 372. Connecting groove; 373. Slider; 374. Movable groove; 375. Movable plate; 376. Drive module; 3761. Threaded rod; 3762. Knob; 377. Guide module; 3771. Guide block; 3772. Guide groove; 378. Positioning block; 379. Positioning groove; 38. Cover plate. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for 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 this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, such as welding, riveting, or bonding; it can also be a detachable connection, such as threaded connection, keyed connection, or pin connection; or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figure 1-6 As shown, the present invention proposes a multi-stage screening mechanism for rice seeds, including a box 1, a screening box 2 inside the box 1, and multiple sets of screening structures 3 inside the screening box 2, with adjacent sets of screening structures 3 arranged in an alternating pattern.

[0025] In this invention, rice seeds can be screened in multiple stages through the screening box 2 and the screening structure 3, which is beneficial for separating rice seeds of different sizes, weights or shapes. This not only improves the efficiency and accuracy of rice seed screening, but also enhances the precision of rice seed screening.

[0026] In an optional embodiment, each of the multiple screening structures 3 includes a sieve plate 31, two mounting blocks 32, two mounting grooves 33, two support blocks 34, a mounting plate 35, a fixing block 36, a fixing component 37, and two cover plates 38. The sieve plate 31 is slidably connected to the front of the screening box 2 and extends into its interior. The two mounting blocks 32 are respectively located on the left and right side walls of the inner cavity of the screening box 2. The two mounting grooves 33 are respectively opened on opposite sides of the two mounting blocks 32, and the front of the two mounting grooves 33 are connected to the outside. The two support blocks 34 are respectively located on the left and right sides of the sieve plate 31, and the two support blocks 34 are slidably connected to the interior of the two mounting grooves 33. The mounting plate 35 is located on the front of the sieve plate 31. The fixing block 36 is located at the bottom of the mounting plate 35. The fixing component 37 is located on the front of the screening box 2, and the output end of the fixing component 37 is connected to the fixing block 36. The two cover plates 38 are both hinged to the front of the box body 1, and the positions of the two cover plates 38 correspond to those of the screening box 2.

[0027] It should be noted that rice seeds can be screened using the sieve plate 31, and the fixing component 37 can fix the fixing block 36, thereby fixing the mounting plate 35. When replacing or cleaning the sieve plate 31, first open the two cover plates 38, then let the fixing component 37 lose its fixation to the mounting plate 35, and then pull the mounting plate 35 forward. The mounting plate 35 will drive the sieve plate 31 to move forward, thereby allowing the sieve plate 31 to detach from the screening box 2, making it convenient to replace or clean the sieve plate 31. When installing the sieve plate 31, the two mounting blocks 32 and the two mounting grooves 33 can guide the sieve plate 31, while the two support blocks 34 provide support, further supporting the sieve plate 31 and ensuring its stability during installation. After the sieve plate 31 is installed, the fixing component 37 fixes the mounting plate 35, thereby further fixing the sieve plate 31 and ensuring its stability after installation, thus ensuring the stability of the sieve plate 31 when screening rice seeds.

[0028] In an optional embodiment, the fixing component 37 includes a connecting block 371, a connecting groove 372, a slider 373, a movable groove 374, a movable plate 375, a drive module 376, a guide module 377, a positioning block 378, and a positioning groove 379. The connecting block 371 is located on the front of the screening box 2, the connecting groove 372 is located on the left side of the connecting block 371, and the front of the connecting groove 372 is connected to the outside. The slider 373 is located on the right side of the fixing block 36 and is slidably connected to the connecting groove 372. Inside, the movable groove 374 is formed on the right side wall of the inner cavity of the connecting groove 372. The movable plate 375 is slidably connected to the inside of the movable groove 374. The drive module 376 is set on the right side of the connecting block 371. The output end of the drive module 376 is connected to the movable plate 375. The guide module 377 is set on the outer end face of the movable plate 375. The positioning block 378 is set on the left side of the movable plate 375. The positioning groove 379 is formed on the right side of the slider 373. The positioning block 378 and the positioning groove 379 are slidably connected.

[0029] It should be noted that when installing the sieve plate 31, the slider 373 will slide and connect to the inside of the connecting groove 372. Then, the drive module 376 can drive the movable plate 375 to move to the left or right inside the movable groove 374. The movable plate 375 will drive the positioning block 378 to move to the left or right. When the positioning block 378 moves to the left and slides and connects to the inside of the positioning groove 379, the slider 373 can be fixed by the positioning block 378 and the positioning groove 379, thereby fixing the fixing block 36, and further fixing the mounting plate 35 and the sieve plate 31. When the positioning block 378 moves to the right and disengages from the positioning groove 379, the fixing of the mounting plate 35 and the sieve plate 31 is lost, so the sieve plate 31 can be disassembled for easy replacement or cleaning. The guide module 377 can guide the movable plate 375 to ensure the stability of the movement of the movable plate 375 and prevent the movable plate 375 from rotating.

[0030] In an optional embodiment, the drive module 376 includes a threaded rod 3761 and a knob 3762. The threaded rod 3761 is located on the right side of the connecting block 371 and extends into the interior of the movable groove 374. The threaded rod 3761 is threadedly connected to the connecting block 371. The left side of the threaded rod 3761 is rotatably connected to the right side of the movable plate 375. The knob 3762 is located on the right side of the threaded rod 3761.

[0031] It should be noted that when the knob 3762 is turned, the knob 3762 will drive the threaded rod 3761 to rotate. Under the action of the thread thrust, the threaded rod 3761 will move to the left or right while rotating. Under the action of the guide module 377, the movable plate 375 will not rotate. When the threaded rod 3761 moves to the left or right, the threaded rod 3761 will drive the movable plate 375 to move to the left or right.

[0032] In an optional embodiment, the guide module 377 includes two guide blocks 3771 and two guide grooves 3772. The two guide blocks 3771 are respectively disposed at the top and bottom of the movable plate 375, and the two guide grooves 3772 are respectively opened in the inner top wall and inner bottom wall of the movable groove 374. The two guide blocks 3771 are slidably connected to the interior of the two guide grooves 3772.

[0033] It should be noted that the two guide blocks 3771 and the two guide grooves 3772 can guide the movable plate 375, ensuring the stability of the movement of the movable plate 375 and preventing the movable plate 375 from rotating, so that the threaded rod 3761 can drive the movable plate 375 to move stably when rotating.

[0034] 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 multi-stage screening mechanism for rice seeds, comprising a box (1), the inside of the box (1) is provided with a screening box (2), characterized in that, The screening box (2) is equipped with multiple screening structures (3) inside, and the adjacent screening structures (3) are staggered. Each of the multiple sets of screening structures (3) includes a sieve plate (31), two mounting blocks (32), two mounting grooves (33), two support blocks (34), a mounting plate (35), a fixing block (36), a fixing component (37), and two cover plates (38). The sieve plate (31) is slidably connected to the front of the screening box (2) and extends into its interior. The two mounting blocks (32) are respectively located on the left and right side walls of the inner cavity of the screening box (2). The two mounting grooves (33) are respectively opened on the opposite side of the two mounting blocks (32). The front of the two mounting grooves (33) is connected to the outside. The two support blocks (34) are respectively located on the opposite side of the two mounting blocks (32). Blocks (34) are respectively located on the left and right sides of the sieve plate (31). The two support blocks (34) are slidably connected to the interior of the two mounting slots (33). The mounting plate (35) is located on the front of the sieve plate (31). The fixing block (36) is located at the bottom of the mounting plate (35). The fixing component (37) is located on the front of the screening box (2). The output end of the fixing component (37) is connected to the fixing block (36). The two cover plates (38) are hinged to the front of the box body (1) by hinges. The positions of the two cover plates (38) correspond to the screening box (2).

2. The multi-stage screening mechanism for rice seeds according to claim 1, characterized in that, The fixing component (37) includes a connecting block (371), a connecting groove (372), a slider (373), a movable groove (374), a movable plate (375), a drive module (376), a guide module (377), a positioning block (378), and a positioning groove (379). The connecting block (371) is located on the front of the screening box (2). The connecting groove (372) is located on the left side of the connecting block (371), and the front of the connecting groove (372) is connected to the outside. The slider (373) is located on the right side of the fixing block (36) and is slidably connected to the inside of the connecting groove (372). The movable groove (374) is located on the right side of the fixing block (376) and is slidably connected to the inside of the connecting groove (372). 74) The movable plate (375) is slidably connected to the inside of the movable groove (374) and the right side wall of the inner cavity of the connecting groove (372). The driving module (376) is located on the right side of the connecting block (371). The output end of the driving module (376) is connected to the movable plate (375). The guide module (377) is located on the outer end face of the movable plate (375). The positioning block (378) is located on the left side of the movable plate (375). The positioning groove (379) is located on the right side of the slider (373). The positioning block (378) is slidably connected to the positioning groove (379).

3. The multi-stage screening mechanism for rice seeds according to claim 2, characterized in that, The drive module (376) includes a threaded rod (3761) and a knob (3762). The threaded rod (3761) is located on the right side of the connecting block (371) and extends into the interior of the movable groove (374). The threaded rod (3761) is threadedly connected to the connecting block (371). The left side of the threaded rod (3761) is rotatably connected to the right side of the movable plate (375). The knob (3762) is located on the right side of the threaded rod (3761).

4. The multi-stage screening mechanism for rice seeds according to claim 2, wherein, The guide module (377) includes two guide blocks (3771) and two guide grooves (3772). The two guide blocks (3771) are respectively located at the top and bottom of the movable plate (375), and the two guide grooves (3772) are respectively opened on the inner top wall and inner bottom wall of the movable groove (374). The two guide blocks (3771) are slidably connected to the interior of the two guide grooves (3772).

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