A device for rapid screening of drought-tolerant rice varieties

Abstract

The utility model discloses a kind of rapid screening device of drought-resistant rice variety, more specifically related to rice seed screening technical field, including linear sieve box, the inside of linear sieve box is installed with screening net, the inside of linear sieve box is provided with engaging slot, linear sieve box is provided with horizontal moving mechanism, sliding block is provided on horizontal moving mechanism, driving block is provided on horizontal moving mechanism, connecting strip is installed between sliding block and driving block, the upper end of linear sieve box is symmetrically installed with two I-shaped slide rail, the lower end of connecting strip is installed with baffle, baffle is inserted into the inside of linear sieve box, linear sieve box is provided with vibration mechanism. The utility model is driven under the structure that baffle reciprocates along I-shaped slide rail in horizontal moving mechanism, material passage that can be dynamically adjusted is formed above screening net, initial position intercepts seed that will be discharged, then push seed back to screen net starting end to carry out secondary screening, overall improve the screening efficiency and effect of rice seed.

Description

Technical Field

[0001] This utility model relates to the field of rice seed screening technology, and more specifically, to a rapid screening device for drought-resistant rice varieties. Background Technology

[0002] Rice seed screening equipment is an indispensable step after grain harvesting. The harvested grains contain not only plump and mature seeds, but also mechanically damaged, broken and immature grains, as well as many impurities such as weed seeds, mud, broken ears, and husks. Therefore, whether kept for seeds or other uses, the harvested grains must be cleaned to meet the requirements.

[0003] Common rapid screening devices for drought-resistant rice varieties can only screen rice seeds once. In practical applications, they rely on vibrating screens to filter and transport rice seeds. However, due to factors such as the vibration frequency of the screen or the speed at which the seeds move, the single-pass filtration effect is often unsatisfactory, requiring a second screening and rework, which ultimately leads to a decrease in screening effect and efficiency.

[0004] In conclusion, to improve the effectiveness and efficiency of the screening process, it is necessary to address the issue of seeds not being able to be repeatedly screened, enabling seeds to be screened repeatedly during a single screening process, thereby avoiding rework and improving the screening effect and efficiency. Utility Model Content

[0005] The present invention provides a rapid screening device for drought-resistant rice varieties, which aims to solve the problem that the single filtration effect is often unsatisfactory due to the vibration frequency of the screen or the speed of seed movement, requiring a second screening and rework.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rapid screening device for drought-resistant rice varieties, comprising a linear screen box, a screening screen installed inside the linear screen box, a locking groove opened inside the linear screen box, a horizontal moving mechanism provided on the linear screen box, a sliding block provided on the horizontal moving mechanism, a driving block provided on the horizontal moving mechanism, a connecting strip installed between the sliding block and the driving block, two I-shaped slide rails symmetrically installed at the upper end of the linear screen box, a baffle plate installed at the lower end of the connecting strip, the baffle plate being inserted into the interior of the linear screen box, and a vibration mechanism provided on the linear screen box.

[0007] In a preferred embodiment, the output end of the horizontal moving mechanism is connected to the drive block. The horizontal moving mechanism is used to control the horizontal movement of the baffle plate. The horizontal moving mechanism includes a balancing component and a threaded component. The sliding end of the balancing component is connected to the sliding block. The balancing component is used to control the balance when the baffle plate moves. The threaded end of the threaded component is connected to the drive block. The threaded component is used to control the horizontal movement of the drive block.

[0008] In a preferred embodiment, the balancing assembly includes two fixed plates symmetrically mounted on the upper end of the linear screen box and a sliding rod mounted between the two fixed plates, with the sliding block slidably connected to the sliding rod.

[0009] In a preferred embodiment, the threaded assembly includes a connecting plate mounted on the upper end of the linear screen box, a mounting plate mounted on the upper end of the linear screen box, a rotary motor mounted on the surface of the mounting plate, and a lead screw mounted on the output end of the rotary motor. The end of the lead screw away from the rotary motor is rotatably connected to the connecting plate, and the lead screw is threadedly connected to the drive block. The rotary motor is used to control the rotational movement of the lead screw.

[0010] In a preferred embodiment, the vibrating end of the vibration mechanism is connected to the linear screen box. The vibration mechanism is used to control the vibration of the linear screen box. The vibration mechanism includes a power component and a support component. The vibrating end of the power component is connected to the linear screen box and is used to control the vibration of the linear screen box. The connecting end of the support component is connected to the linear screen box and is used to provide dynamic support for the linear screen box.

[0011] In a preferred embodiment, the power assembly includes four upper connecting blocks symmetrically mounted on the surface of the linear screen box, a mounting frame mounted on the lower end of the linear screen box, and two vibration motors mounted on the surface of the mounting frame. The vibration motors are used to control the vibration of the linear screen box.

[0012] In a preferred embodiment, the support assembly includes a spring mounted on the lower end of the upper connecting block, a lower connecting block mounted on the lower end of the spring, and a support base mounted on the lower ends of the four lower connecting blocks.

[0013] In a preferred embodiment, the sliding block and the driving block are slidably connected to two I-shaped slide rails, and a discharge trough and a discharge trough are provided at the lower end of the linear screen box.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention utilizes a structure where a baffle plate reciprocates along an I-shaped slide rail under the drive of a horizontal moving mechanism, creating a dynamically adjustable material channel above the screening screen. The initial position intercepts seeds that are about to be discharged, and then the seeds are precisely pushed back to the starting end of the screen for secondary screening. The process of screening, returning material, and then re-screening is completed in a single screening process, improving the screening efficiency and effectiveness of rice seeds. Attached Figure Description

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

[0017] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the support component structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the linear screen box structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the horizontal moving mechanism of this utility model.

[0021] The attached figures are labeled as follows: 1. Linear screen box; 11. Screening screen; 12. Engaging groove; 13. Connecting bar; 14. Sliding block; 15. Driving block; 16. Baffle plate; 17. Impurity discharge trough; 18. Discharge trough; 19. I-shaped slide rail; 211. Fixing plate; 212. Slide rod; 221. Connecting plate; 222. Mounting plate; 223. Rotary motor; 224. Lead screw; 311. Upper connecting block; 312. Mounting frame; 313. Vibration motor; 321. Spring; 322. Lower connecting block; 323. Support base frame. Detailed Implementation

[0022] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0023] Refer to the instruction manual appendix Figures 1 to 5 A rapid screening device for drought-resistant rice varieties includes a linear screen box 1, a screening screen 11 installed inside the linear screen box 1, a locking groove 12 opened inside the linear screen box 1, a horizontal moving mechanism provided on the linear screen box 1, a sliding block 14 provided on the horizontal moving mechanism, a driving block 15 provided on the horizontal moving mechanism, a connecting strip 13 installed between the sliding block 14 and the driving block 15, two I-shaped slide rails 19 symmetrically installed at the upper end of the linear screen box 1, a baffle plate 16 installed at the lower end of the connecting strip 13, the baffle plate 16 being inserted into the interior of the linear screen box 1, and a vibration mechanism provided on the linear screen box 1.

[0024] It should be noted that the baffle plate 16 is controlled by a horizontal moving mechanism to reciprocate. Its initial position is at the discharge end of the screening screen 11, used to prevent the screened rice seeds from being directly discharged. When the seeds move to the discharge end, the baffle plate 16 intercepts them. Then, the horizontal moving mechanism drives the baffle plate 16 along the I-shaped slide rail 19 to push the seeds towards the feed end, returning them to the initial position of the screening screen 11 for secondary screening. After repeated screening, the baffle plate 16 moves horizontally into the locking groove 12 and engages, releasing the obstruction at the discharge end and allowing the seeds to be discharged from the discharge trough 18.

[0025] It is worth noting that the design of the baffle plate 16 and the locking groove 12 realizes a closed-loop process from screening to return and then to re-screening, which solves the problem of incomplete screening in a single time, significantly improves screening efficiency and yield. The vibration mechanism assists the seeds to be evenly distributed on the screen through high-frequency micro-vibration, avoiding the leakage caused by accumulation.

[0026] Refer to the instruction manual appendix Figures 2 to 5 The output end of the horizontal moving mechanism is connected to the drive block 15. The horizontal moving mechanism is used to control the horizontal movement of the baffle plate 16. The horizontal moving mechanism includes a balancing component and a threaded component. The sliding end of the balancing component is connected to the sliding block 14. The balancing component is used to control the balance when the baffle plate 16 moves. The threaded end of the threaded component is connected to the drive block 15. The threaded component is used to control the horizontal movement of the drive block 15.

[0027] It should be noted that the balancing component ensures that the baffle plate 16 does not tilt when moving horizontally, maintaining a parallel relationship with the screening screen 11. The threaded component controls the moving distance and speed of the baffle plate 16 through the precise forward and reverse rotation of the rotary motor 223, realizing programmable reciprocating motion logic.

[0028] Refer to the instruction manual appendix Figures 2 to 5 The balancing assembly includes two fixed plates 211 symmetrically installed on the upper end of the linear screen box 1 and a slide bar 212 installed between the two fixed plates 211. The sliding block 14 is slidably connected to the slide bar 212.

[0029] It should be noted that the slide bar 212 passes through the slide block 14 and is fixed to the fixing plates 211 at both ends to form a rigid support structure. The slide block 14 has a built-in linear bearing to reduce the frictional resistance with the slide bar 212 and ensure that the baffle plate 16 moves smoothly.

[0030] Refer to the instruction manual appendix Figures 2 to 5 The threaded assembly includes a connecting plate 221 mounted on the upper end of the linear screen box 1, a mounting plate 222 mounted on the upper end of the linear screen box 1, a rotary motor 223 mounted on the surface of the mounting plate 222, and a lead screw 224 mounted on the output end of the rotary motor 223. The end of the lead screw 224 away from the rotary motor 223 is rotatably connected to the connecting plate 221, and the lead screw 224 is threadedly connected to the drive block 15. The rotary motor 223 is used to control the rotational movement of the lead screw 224.

[0031] It should be noted that the rotary motor 223 drives the lead screw 224 to rotate, and the drive block 15 engages with the lead screw 224 through the internal thread to convert the rotational motion into horizontal linear motion. The connecting plate 221 and the mounting plate 222 respectively provide axial support for the lead screw 224 and fix the motor.

[0032] Refer to the instruction manual appendix Figures 3 to 4The vibrating end of the vibration mechanism is connected to the linear screen box 1. The vibration mechanism is used to control the vibration of the linear screen box 1. The vibration mechanism includes a power component and a support component. The vibrating end of the power component is connected to the linear screen box 1. The power component is used to control the vibration of the linear screen box 1. The connecting end of the support component is connected to the linear screen box 1. The support component is used to provide dynamic support for the linear screen box 1.

[0033] It should be noted that the high-frequency vibration generated by the power component is transmitted to the linear screen box 1, causing the seeds to jump forward on the screening screen 11. The support component absorbs the vibration energy through elastic deformation, reducing the impact on the ground, while maintaining the dynamic balance of the screen box.

[0034] It is worth noting that the vibration frequency must be matched with the seed particle size and moisture content. Too low a frequency will result in incomplete separation of impurities, while too high a frequency will easily damage the seeds. The stiffness coefficient of spring 321 must be adapted to the weight of the sieve box to avoid resonance.

[0035] Refer to the instruction manual appendix Figures 3 to 4 The power assembly includes four upper connecting blocks 311 symmetrically mounted on the surface of the linear screen box 1, a mounting frame 312 mounted on the lower end of the linear screen box 1, and two vibration motors 313 mounted on the surface of the mounting frame 312. The vibration motors 313 are used to control the vibration of the linear screen box 1.

[0036] It should be noted that the two vibration motors 313 are symmetrically installed on the surface of the mounting frame 312. They generate directional linear vibration force through synchronous reverse rotation. The upper connecting block 311 transmits the vibration force evenly to the four corners of the linear screen box 1, avoiding local stress concentration.

[0037] Refer to the instruction manual appendix Figures 3 to 4 The support assembly includes a spring 321 mounted on the lower end of the upper connecting block 311, a lower connecting block 322 mounted on the lower end of the spring 321, and a support base 323 mounted on the lower ends of the four lower connecting blocks 322.

[0038] It should be noted that the upper end of the spring 321 is connected to the screen box through the upper connecting block 311, and the lower end is fixed to the support base 323 through the lower connecting block 322. The spring 321 provides elastic support in the vertical direction.

[0039] Refer to the instruction manual appendix Figures 1 to 5 The sliding block 14 and the driving block 15 are slidably connected to the two I-shaped slide rails 19 respectively. The lower end of the linear screen box 1 is provided with a discharge groove 17 and a discharge groove 18.

[0040] It should be noted that the I-shaped slide rail 19 provides high-precision guidance for the sliding block 14 and the drive block 15, ensuring that the moving trajectory of the baffle plate 16 is parallel to the long axis of the screen box. The impurity discharge trough 17 is located below the screen 11 and is used to discharge small particle impurities. The discharge trough 18 is located at the end of the screen box and is used to collect qualified seeds.

[0041] Working principle: When the device is started, the vibration motor 313 drives the linear screen box 1 to vibrate at high frequency through the mounting frame 312. The vibration energy is transmitted to the support base 323 through the upper connecting block 311. The support assembly composed of the spring 321 and the support base 323 buffers the vibration impact and maintains the dynamic stability of the screen box. After the rice seeds are put into the linear screen box 1, they move along the screening screen 11 under the action of vibration. Small particles of impurities fall into the bottom discharge trough 17 through the mesh and are discharged, while the seeds continue to move forward. When the seeds reach the end of the screening screen 11, the baffle plate 16 is intercepted by the drive of the horizontal moving mechanism. The rotary motor 223 starts and drives the lead screw. 224 rotates, driving the drive block 15, which is threadedly connected to it, to move horizontally along the I-shaped slide rail 19. At the same time, the sliding block 14 slides synchronously on the slide rod 212 to maintain the balance of the baffle plate 16. The baffle plate 16 pushes the seeds back to the starting end of the screening screen 11 for secondary screening. This process can be repeated multiple times to ensure thorough screening. After the set number of screenings is completed, the rotary motor 223 reverses, driving the baffle plate 16 to move horizontally to the locking groove 12 inside the screen box and lock it in place, releasing the obstruction to the discharge end. At this time, qualified seeds are discharged through the discharge chute 18, realizing repeated and efficient screening in a single operation, significantly improving the good seed rate and avoiding rework.

[0042] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A rapid screening device for drought-resistant rice varieties, characterized in that: The device includes a linear screen box (1), a screen (11) installed inside the linear screen box (1), a locking groove (12) opened inside the linear screen box (1), a horizontal moving mechanism is provided on the linear screen box (1), a sliding block (14) is provided on the horizontal moving mechanism, a driving block (15) is provided on the horizontal moving mechanism, a connecting strip (13) is installed between the sliding block (14) and the driving block (15), two I-shaped slide rails (19) are symmetrically installed at the upper end of the linear screen box (1), a baffle plate (16) is installed at the lower end of the connecting strip (13), the baffle plate (16) is inserted into the interior of the linear screen box (1), and a vibration mechanism is provided on the linear screen box (1).

2. The rapid screening device for drought-resistant rice varieties according to claim 1, characterized in that: The output end of the horizontal moving mechanism is connected to the drive block (15). The horizontal moving mechanism is used to control the horizontal movement of the baffle plate (16). The horizontal moving mechanism includes a balancing component and a threaded component. The sliding end of the balancing component is connected to the sliding block (14). The balancing component is used to control the balance when the baffle plate (16) moves. The threaded end of the threaded component is connected to the drive block (15). The threaded component is used to control the horizontal movement of the drive block (15).

3. The rapid screening device for drought-resistant rice varieties according to claim 2, characterized in that: The balancing assembly includes two fixed plates (211) symmetrically installed on the upper end of the linear screen box (1) and a slide bar (212) installed between the two fixed plates (211). The sliding block (14) is slidably connected to the slide bar (212).

4. The rapid screening device for drought-resistant rice varieties according to claim 3, characterized in that: The threaded assembly includes a connecting plate (221) mounted on the upper end of the linear screen box (1), a mounting plate (222) mounted on the upper end of the linear screen box (1), a rotary motor (223) mounted on the surface of the mounting plate (222), and a lead screw (224) mounted on the output end of the rotary motor (223). The end of the lead screw (224) away from the rotary motor (223) is rotatably connected to the connecting plate (221), and the lead screw (224) is threadedly connected to the drive block (15). The rotary motor (223) is used to control the rotational movement of the lead screw (224).

5. The rapid screening device for drought-resistant rice varieties according to claim 1, characterized in that: The vibrating end of the vibration mechanism is connected to the linear screen box (1). The vibration mechanism is used to control the vibration of the linear screen box (1). The vibration mechanism includes a power component and a support component. The vibrating end of the power component is connected to the linear screen box (1). The power component is used to control the vibration of the linear screen box (1). The connecting end of the support component is connected to the linear screen box (1). The support component is used to provide dynamic support for the linear screen box (1).

6. The rapid screening device for drought-resistant rice varieties according to claim 5, characterized in that: The power assembly includes four upper connecting blocks (311) symmetrically mounted on the surface of the linear screen box (1), a mounting frame (312) mounted on the lower end of the linear screen box (1), and two vibration motors (313) mounted on the surface of the mounting frame (312). The vibration motors (313) are used to control the vibration of the linear screen box (1).

7. The rapid screening device for drought-resistant rice varieties according to claim 6, characterized in that: The support assembly includes a spring (321) mounted on the lower end of the upper connecting block (311), a lower connecting block (322) mounted on the lower end of the spring (321), and a support base (323) mounted on the lower ends of the four lower connecting blocks (322).

8. The rapid screening device for drought-resistant rice varieties according to claim 1, characterized in that: The sliding block (14) and the driving block (15) are slidably connected to two I-shaped slide rails (19) respectively. The lower end of the linear screen box (1) is provided with a discharge groove (17) and a discharge groove (18).

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