Rice classified screening and conveying device

Abstract

The utility model relates to the technical field of rice screening, in particular to a rice grading screening and conveying device which comprises a screening machine and a resistance device, supporting legs are fixedly connected to the lower surface of the screening machine, a discharging hopper is fixedly connected to the surface of the screening machine, a screening plate is fixedly installed on the inner wall of the screening machine, and a transmission belt is installed at the discharging end of the screening machine. The resistance device is arranged at the discharging end of the screening machine and comprises an outer frame, the outer frame is fixedly connected with the screening machine, the surface of the outer frame is fixedly connected with an inclined plate, one side of the inclined plate is rotationally connected with a rotating rod, the surface of the rotating rod is fixedly connected with a bent plate, and the lower surface of the bent plate is fixedly connected with a connecting rod. The buffering effect of the pressure spring is matched, the impact force generated during material discharging is effectively relieved, damage caused by collision between materials is greatly reduced, the integrity of damageable materials such as rice can be better protected, and the germination rate of seed cultivation or the appearance quality of commercial rice can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of rice screening technology, and in particular to a rice grading, screening and conveying device. Background Technology

[0002] Rice, also known as paddy rice, is an annual aquatic herbaceous plant belonging to the genus Oryza of the family Poaceae. Its culms are erect, its leaves are linear-lanceolate, and its panicles are large and loosely spreading. Each spikelet contains one mature floret. Rice thrives in hot, humid, and short-day environments and is not particular about soil type. It is the world's most important food crop, the staple food of more than half the world's population, providing high-quality starch, protein, amino acids, and vitamins. China is one of the origins of cultivated rice, with rice cultivation area accounting for about one-quarter of the world's total rice cultivation area and yielding nearly 45% of the country's total grain output, making it the world's highest rice producer. Rice screening is a crucial step in improving rice quality and subsequent processing efficiency. Screening equipment is often used after rice harvest and in the early stages of processing. Screening also removes impurities such as weed seeds, rice husks, and mud clumps, reducing wear and tear on subsequent processing equipment and laying a solid foundation for high-quality rice production, which is of great significance for ensuring grain quality.

[0003] However, during the rice screening process, when the discharged rice falls onto the conveyor belt, the direct collision between the particles and the conveyor belt can easily cause damage to the surface of the grains, resulting in a decrease in the germination rate of high-quality rice seeds and a decline in the appearance quality of commercial rice. This directly affects the seed cultivation effect and the market value of the product. Furthermore, the lack of effective buffer and protective structures in traditional equipment exacerbates this problem, causing economic losses and waste of resources. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the existing technology that when rice is screened and the discharged material falls onto the conveyor belt, the direct collision between the particles and the conveyor belt can easily cause damage to the surface of the grains, resulting in a decrease in the germination rate of high-quality rice seeds and a decline in the appearance quality of commercial rice, which directly affects the seed breeding effect and the market value of the product. Furthermore, the lack of effective buffer and protective structures in traditional equipment exacerbates this problem, causing economic losses and waste of resources. Therefore, this invention proposes a rice grading, screening and conveying device.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a rice grading and screening conveying device, comprising a screening machine and a resistance device. A support leg is fixedly connected to the lower surface of the screening machine, a hopper is fixedly connected to the surface of the screening machine, a screen plate is fixedly installed on the inner wall of the screening machine, a transmission belt is installed at the discharge end of the screening machine, and the resistance device is located at the discharge end of the screening machine. The resistance device includes an outer frame, which is fixedly connected to the screening machine. An inclined plate is fixedly connected to the surface of the outer frame, a rotating rod is rotatably connected to one side of the inclined plate, a bending plate is fixedly connected to the surface of the rotating rod, and a connecting rod is fixedly connected to the lower surface of the bending plate. A through hole is opened on the side of the outer frame near the connecting rod, and a pull rod is slidably connected to the inner wall of the through hole of the outer frame. By setting the resistance device, the guidance of the inclined plate and the bending plate, and the buffering effect of the pressure spring, the impact force during material discharge is effectively mitigated, greatly reducing damage caused by collisions between materials. For fragile materials such as rice, it can better protect their integrity and ensure the germination rate of seed cultivation or the appearance quality of commercial rice.

[0006] Preferably, an arc-shaped ring is fixedly connected to the upper surface of the pull rod, and the longitudinal section of the arc-shaped ring is U-shaped.

[0007] Preferably, the lower surface of the connecting rod is rotatably connected to the arc-shaped ring, and the outer frame is located on the upper surface of the transmission belt.

[0008] Preferably, a pressure spring is fitted on the surface of the pull rod, and the two ends of the pressure spring are fixedly connected to the outer frame and the pull rod, respectively. By setting the pressure spring, when the material falls onto the bending plate, the bending plate rotates under the impact pressure, causing the pressure spring to compress and deform. The spring converts the kinetic energy of the falling material into its own elastic potential energy through elastic deformation, prolonging the impact time and reducing the instantaneous impact force peak, thereby reducing the hard collision damage between the grain and the bending plate and the grain.

[0009] Preferably, the upper surface of the transmission belt is provided with a material receiving assembly. The material receiving assembly includes a stand, which is fixedly connected to the surface of the transmission belt. The surface of the stand has a sliding hole, and a push rod is slidably connected to the inner wall of the sliding hole. One end of the push rod is fixedly connected to a material receiving box. By setting the material receiving assembly, the pneumatic rod drives the material receiving box to reciprocate back and forth, so that the material is evenly spread on the surface of the transmission belt under the shaking of the material receiving box, reducing material accumulation and providing a good foundation for subsequent processing, which helps to improve production efficiency and product quality stability.

[0010] Preferably, the receiving box is located on the lower surface of the outer frame, and the lower surface of the receiving box has a sprinkling hole. By setting the receiving box, the receiving box moves back and forth under the drive of the pneumatic rod. The shaking makes the material in the box evenly dispersed and spread on the surface of the transmission belt, reducing the squeezing and collision between particles caused by the concentrated accumulation of materials in the traditional feeding method.

[0011] Preferably, a pneumatic rod is fixedly connected to one side of the upright frame. The driving end of the pneumatic rod passes through the upright frame and is fixedly connected to the receiving box. By setting the pneumatic rod, the material is prevented from accumulating on the transmission belt and the rice grains are evenly distributed in a thin layer, reducing the lamination collision and local impact between the grains.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, by setting a resistance device, when the material is discharged, it first falls onto the inclined plate. The inclined plate guides the material to slide onto the bending plate. The bending plate is squeezed and deformed, and at the same time, the pressure spring is squeezed and deformed. The impact force generated when the material passes through the bending plate is alleviated, reducing the damage caused by collision between materials. By setting a resistance device, the guidance of the inclined plate and the bending plate, combined with the buffering effect of the pressure spring, the impact force when the material is discharged is effectively alleviated, greatly reducing the damage caused by collision between materials. For fragile materials such as rice, it can better protect their integrity and ensure the germination rate of seed cultivation or the appearance quality of commercial rice.

[0014] 2. In this utility model, by setting up a receiving component, when the material passes through the bending plate, it falls onto the receiving box. The receiving box receives the material, and then the pneumatic rod starts and drives the receiving box to reciprocate back and forth. Under the shaking of the receiving box, the material is evenly spread on the surface of the transmission belt, reducing material accumulation. By setting up the receiving component, the pneumatic rod drives the receiving box to reciprocate back and forth, so that the material is evenly spread on the surface of the transmission belt under the shaking of the receiving box, reducing material accumulation and providing a good foundation for subsequent processing, which helps to improve production efficiency and product quality stability. Attached Figure Description

[0015] Figure 1 This utility model provides a three-dimensional structural schematic diagram of a rice grading, screening, and conveying device;

[0016] Figure 2 This utility model provides a side view of a rice grading, screening, and conveying device.

[0017] Figure 3 This utility model provides a schematic diagram of the resistance device structure of a rice grading and screening conveying device;

[0018] Figure 4This utility model proposes a rice grading, screening, and conveying device. Figure 3 A magnified structural diagram at point A;

[0019] Figure 5 This invention provides a schematic diagram of the receiving component structure of a rice grading and screening conveying device.

[0020] Legend: 1. Screening machine; 2. Support leg; 3. Feed hopper; 4. Screen plate; 5. Drive belt; 6. Resistance device; 61. Outer frame; 62. Inclined plate; 63. Bending plate; 64. Rotating rod; 65. Arc ring; 66. Pull rod; 67. Connecting rod; 68. Pressure spring; 69. Material receiving assembly; 691. Material receiving box; 692. Vertical frame; 693. Push rod; 694. Pneumatic rod. Detailed Implementation

[0021] Please see Figures 1-5 This utility model provides a technical solution: a rice grading and screening conveying device, including a screening machine 1 and a resistance device 6. The lower surface of the screening machine 1 is fixedly connected with a support leg 2, the surface of the screening machine 1 is fixedly connected with a feeding hopper 3, the inner wall of the screening machine 1 is fixedly installed with a screen plate 4, the discharge end of the screening machine 1 is installed with a transmission belt 5, and the resistance device 6 is set at the discharge end of the screening machine 1.

[0022] In this embodiment: the resistance device 6 includes an outer frame 61, which is fixedly connected to the screening machine 1. An inclined plate 62 is fixedly connected to the surface of the outer frame 61. A rotating rod 64 is rotatably connected to one side of the inclined plate 62. A bending plate 63 is fixedly connected to the surface of the rotating rod 64. A connecting rod 67 is fixedly connected to the lower surface of the bending plate 63. A through hole is opened on the side of the outer frame 61 near the connecting rod 67. A pull rod 66 is slidably connected to the inner wall of the through hole of the outer frame 61. By setting the resistance device 6, the guidance of the inclined plate 62 and the bending plate 63, and the buffering effect of the pressure spring 68, the impact force when the material is fed is effectively reduced, and the damage caused by the collision between materials is greatly reduced. For fragile materials such as rice, it can better protect their integrity and ensure the germination rate of seed cultivation or the appearance quality of commercial rice.

[0023] Specifically, an arc-shaped ring 65 is fixedly connected to the upper surface of the pull rod 66, and the longitudinal section of the arc-shaped ring 65 is set in a "U" shape.

[0024] Specifically, the lower surface of the connecting rod 67 is rotatably connected to the arc-shaped ring 65, and the outer frame 61 is located on the upper surface of the transmission belt 5.

[0025] Specifically, a pressure spring 68 is fitted onto the surface of the pull rod 66. The two ends of the pressure spring 68 are fixedly connected to the outer frame 61 and the pull rod 66, respectively. By setting the pressure spring 68, when the material falls onto the bending plate 63, the bending plate 63 rotates under the impact pressure, causing the pressure spring 68 to compress and deform. The spring converts the kinetic energy of the falling material into its own elastic potential energy through elastic deformation, prolonging the impact time and reducing the peak value of the instantaneous impact force, thereby reducing the hard collision damage between the grain and the bending plate 63 and the grain.

[0026] Specifically, a receiving assembly 69 is provided on the upper surface of the transmission belt 5. The receiving assembly 69 includes a support frame 692, which is fixedly connected to the surface of the transmission belt 5. A sliding hole is opened on the surface of the support frame 692, and a push rod 693 is slidably connected to the inner wall of the sliding hole on the surface of the support frame 692. One end of the push rod 693 is fixedly connected to a receiving box 691. By setting up the receiving assembly 69, the pneumatic rod 694 drives the receiving box 691 to reciprocate back and forth, so that the material is evenly spread on the surface of the transmission belt 5 under the shaking of the receiving box 691, reducing material accumulation and providing a good foundation for subsequent processing, which helps to improve production efficiency and product quality stability.

[0027] Specifically, the receiving box 691 is located on the lower surface of the outer frame 61, and the lower surface of the receiving box 691 has a sprinkling hole.

[0028] In this embodiment: by setting up a receiving box 691, the receiving box 691 moves back and forth under the drive of the pneumatic rod 694. The shaking makes the material in the box evenly dispersed and spread on the surface of the transmission belt 5, reducing the squeezing and collision between particles caused by the concentrated accumulation of materials in the traditional feeding method.

[0029] Specifically, a pneumatic rod 694 is fixedly connected to one side of the upright frame 692, and the driving end of the pneumatic rod 694 passes through the upright frame 692 and is fixedly connected to the receiving box 691.

[0030] In this embodiment: by setting up a pneumatic rod 694, the material is prevented from accumulating into clumps on the transmission belt 5, so that the rice grains are evenly distributed in a thin layer, reducing inter-particle lamination collisions and local impacts.

[0031] Working principle: By setting up the resistance device 6, when the material is discharged, it first falls onto the inclined plate 62. The inclined plate 62 guides the material to slide onto the bending plate 63. The bending plate 63 is squeezed and deformed, and at the same time, the pressure spring 68 is squeezed and deformed. The impact force generated when the material passes through the bending plate 63 is alleviated, reducing the damage caused by collision between materials. By setting up the resistance device 6, the guidance of the inclined plate 62 and the bending plate 63, and the buffering effect of the pressure spring 68, the impact force when the material is discharged is effectively alleviated, greatly reducing the damage caused by collision between materials. For fragile materials such as rice, it can better protect their integrity and ensure the germination rate of seed cultivation or the appearance quality of commercial rice.

[0032] By setting up the receiving component 69, when the material passes through the bending plate 63, it falls onto the receiving box 691. The receiving box 691 receives the material, and then the pneumatic rod 694 starts and drives the receiving box 691 to reciprocate back and forth. Under the shaking of the receiving box 691, the material is evenly spread on the surface of the transmission belt 5, reducing material accumulation. By setting up the receiving component 69, the pneumatic rod 694 drives the receiving box 691 to reciprocate back and forth, so that the material is evenly spread on the surface of the transmission belt 5 under the shaking of the receiving box 691, reducing material accumulation and providing a good foundation for subsequent processing, which helps to improve production efficiency and product quality stability.

Claims

1. A rice grading, screening, and conveying device, comprising a screening machine (1) and a resistance device (6), characterized in that: The lower surface of the screening machine (1) is fixedly connected with a support leg (2), the surface of the screening machine (1) is fixedly connected with a feeding hopper (3), the inner wall of the screening machine (1) is fixedly installed with a screen plate (4), the discharge end of the screening machine (1) is installed with a transmission belt (5), the resistance device (6) is set at the discharge end of the screening machine (1), the resistance device (6) includes an outer frame (61), the outer frame (61) is fixedly connected with the screening machine (1), the surface of the outer frame (61) is fixedly connected with an inclined plate (62), one side of the inclined plate (62) is rotatably connected with a rotating rod (64), the surface of the rotating rod (64) is fixedly connected with a bending plate (63), the lower surface of the bending plate (63) is fixedly connected with a connecting rod (67), the outer frame (61) is provided with a through hole on the side near the connecting rod (67), and the inner wall of the through hole of the outer frame (61) is slidably connected with a pull rod (66).

2. The rice grading, screening, and conveying device according to claim 1, characterized in that: An arc-shaped ring (65) is fixedly connected to the upper surface of the pull rod (66), and the longitudinal section of the arc-shaped ring (65) is arranged in a "U" shape.

3. The rice grading, screening, and conveying device according to claim 2, characterized in that: The lower surface of the connecting rod (67) is rotatably connected to the arc ring (65), and the outer frame (61) is located on the upper surface of the transmission belt (5).

4. The rice grading, screening, and conveying device according to claim 3, characterized in that: A pressure spring (68) is fitted on the surface of the pull rod (66), and the two ends of the pressure spring (68) are fixedly connected to the outer frame (61) and the pull rod (66) respectively.

5. The rice grading, screening, and conveying device according to claim 1, characterized in that: The upper surface of the transmission belt (5) is provided with a receiving assembly (69). The receiving assembly (69) includes a stand (692). The stand (692) is fixedly connected to the surface of the transmission belt (5). The surface of the stand (692) is provided with a sliding hole. A push rod (693) is slidably connected to the inner wall of the sliding hole on the surface of the stand (692). One end of the push rod (693) is fixedly connected to a receiving box (691).

6. A rice grading, screening, and conveying device according to claim 5, characterized in that: The receiving box (691) is located on the lower surface of the outer frame (61), and the lower surface of the receiving box (691) is provided with a sprinkling hole.

7. A rice grading, screening, and conveying device according to claim 6, characterized in that: A pneumatic rod (694) is fixedly connected to one side of the upright frame (692), and the driving end of the pneumatic rod (694) passes through the upright frame (692) and is fixedly connected to the receiving box (691).

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