Rice conveying all-in-one machine with impurity filtering function

Abstract

The utility model discloses a rice conveying integrated machine with impurity filtering function, include: portal frame, and the portal frame is built between the transfer conveying belt, plane movement subassembly, plane movement subassembly installs on the portal frame, and the plane movement subassembly is installed with mechanical grab hand, holds the box, and the box top hinged has the box cover, and the holding box top is installed with the screening groove, and the screening groove bottom is provided with the residue discharge port, the screening box, the screening box top horizontal rotation is connected in the screening groove, and the screening box one side is provided with the through -opening, and the through -opening is installed with the screen door, transmission mechanism, transmission mechanism installs in the holding box, vibration subassembly, vibration subassembly installs on the screening box, high pressure airflow subassembly, high pressure airflow subassembly installs on the box cover, control system, the utility model discloses rice impurity rate is reduced greatly, satisfies the strict requirement of food processing to raw material cleanliness, and the rice commodity value is promoted.

Description

Technical Field

[0001] This utility model relates to the field of grain processing equipment technology, and in particular to a rice conveying machine with impurity filtration function. Background Technology

[0002] As one of my country's main grain crops, rice processing involves multiple stages, including cleaning, hulling, milling, grading, conveying, and packaging. Among these, "conveying" and "impurity removal" are crucial steps in ensuring rice quality and processing efficiency. In existing rice processing production lines, rice transportation and impurity filtration are typically accomplished using "segmented" equipment: rice is first transferred from one process to another via belt conveyors, bucket elevators, or similar equipment, and then impurities are separated separately using equipment such as vibrating screens and gravity separators. This segmented processing method has the following significant drawbacks: Transfer and filtration require separate equipment and additional transfer silos, resulting in a large production line footprint, long process cycle, and rice is prone to secondary breakage during transfer, increasing grain loss. Existing vibrating screens mostly rely on single mechanical vibration to separate impurities. They are not very effective at separating impurities such as bran powder and fine broken rice with a specific gravity close to that of rice. In addition, the screens are prone to clogging and require frequent manual cleaning, which further reduces processing efficiency. Traditional transfer equipment requires manual adjustment of the conveying path, and the slag discharge and ash removal after impurity filtration also require manual intervention, making it difficult to adapt to the unmanned requirements of modern rice processing production lines. Poor equipment coordination: There is a lack of unified control logic between transfer equipment and filtration equipment of different brands and models, which can easily lead to mismatch between conveying and filtration capacity, resulting in equipment overload or rice accumulation, affecting the stability of the production line. Based on the above-mentioned technical problems, this utility model provides a rice conveying machine with impurity filtration function. Utility Model Content

[0003] The purpose of this invention is to provide a rice conveying machine with impurity filtration function to solve the problems existing in the prior art.

[0004] To achieve the above objectives, this utility model provides the following solution: This utility model provides a rice conveying machine with impurity filtration function, comprising: Gantry crane, which is erected between transfer conveyor belts; A planar moving assembly, which is mounted on the gantry and has a mechanical gripper installed on it; A holding box, the top of which is hinged to a box cover, a screening trough is installed on the top of the holding box, and a slag discharge port is opened at the bottom of the screening trough; A screening box, the screening box having a regular polygonal cross-section, the top of the screening box being horizontally rotatably connected to the screening trough, and a gap being provided between the screening box and the bottom of the screening trough, and an opening being provided on one side of the screening box, on which a mesh door is installed; A transmission mechanism is installed inside the holding box, and the transmission mechanism is in transmission cooperation with the screening box; A vibration assembly, which is mounted on the screening box; A high-pressure airflow assembly is installed on the box cover and is arranged correspondingly to the screening box; A control system is used to control the operation of the overall control device.

[0005] According to the rice conveying machine with impurity filtration function provided by this utility model, the planar moving component includes an X-axis linear motor and a Z-axis linear motor. The X-axis linear motor is horizontally mounted on the gantry, and the Z-axis linear motor is vertically mounted on the slide of the X-axis linear motor. An installation arm is vertically mounted on the slide of the Z-axis linear motor, and the mechanical gripper is mounted at the bottom of the installation arm.

[0006] According to the rice conveying machine with impurity filtration function provided by this utility model, the transmission mechanism includes a drive motor, the output shaft of which is fixedly connected to a drive sprocket, a driven sprocket is rotatably connected to the side wall of the screening tank, the drive sprocket and the driven sprocket are connected by chain transmission, an annular track is fixedly fixed to the side wall of the screening tank, the annular track is coaxially arranged with the drive sprocket, a slider is slidably connected to the annular track, an mounting shaft is fixedly connected to the center position of the side wall of the screening box, the mounting shaft is rotatably connected to the slider, a connecting plate is fixedly connected to the center position of the driven sprocket, one end of the connecting plate is fixed to the slider, an internal gear ring is fixedly connected to the side wall of the screening tank, the internal gear ring is coaxially arranged with the annular track and its diameter is larger than that of the annular track, a gear is fixedly connected to the mounting shaft, and the gear meshes with the internal gear ring.

[0007] According to the rice conveying machine with impurity filtration function provided by this utility model, the vibration component includes a vibration motor, which is installed on the outer wall of the screening box.

[0008] According to the rice conveying machine with impurity filtration function provided by this utility model, the high-pressure airflow component includes an air pipe, which is horizontally installed on the bottom surface of the box cover. The air pipe is connected to the high-pressure air pump through a delivery pipe, and several air jet holes are opened on the air pipe.

[0009] According to the rice conveying machine with impurity filtration function provided by this utility model, the bottom of the screening tank is a funnel-shaped structure, the slag discharge port is opened at the lowest point of the screening tank, a slag discharge pipe is installed on the slag discharge port, and a manual valve is installed on the slag discharge pipe.

[0010] According to the rice conveying machine with impurity filtration function provided by this utility model, positioners are respectively installed on the X-axis linear motor and the Z-axis linear motor.

[0011] According to the rice conveying machine with impurity filtration function provided by this utility model, the screening box and the mesh door are fixed together by a buckle, and the mesh door is equipped with a handle.

[0012] The present invention discloses the following technical effects: The device employs a dual impurity removal mechanism of vibration and high-pressure airflow. The vibration component, in conjunction with the rotation of the regular polygonal screening box, breaks up the rice accumulation and fully exposes the impurities. The high-pressure airflow precisely blows away the light impurities hidden in the gaps between the rice grains. The mesh door and the slag discharge port form a directional channel to prevent impurities from flowing back, significantly reducing the impurity content of the rice, meeting the strict requirements of food processing for the cleanliness of raw materials, and enhancing the commercial value of the rice. The control system achieves fully automated management and control of the entire process, eliminating the need for manual intervention in grabbing, unloading, and impurity removal. The planar moving components and mechanical grippers work together precisely to transfer rice, while the transmission mechanism and vibration components operate in tandem according to preset programs. This reduces the manpower required by operators and avoids incomplete impurity removal or rice loss caused by human error, thus ensuring production continuity. The gantry frame is built between the transfer conveyor belts, making full use of space to achieve seamless connection between transfer and impurity removal; the spacing design between the screening box and the screening trough facilitates the collection and discharge of impurities, and the hinged structure of the box cover facilitates later maintenance and cleaning; the device integrates grabbing, impurity removal and holding functions, eliminating the need for multiple additional devices, and can flexibly adapt to the transportation needs of different scenarios such as rice processing plants, grain depots, and grain and oil supermarkets, with strong practicality and compatibility. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of the rice conveying machine with impurity filtration function of this utility model; Figure 2 This is a schematic diagram of the internal structure of the container of this utility model.

[0015] The components include: 1. Gantry frame; 2. Mechanical gripper; 3. Container box; 4. Box cover; 5. Screening trough; 6. Screening box; 7. Mesh door; 8. X-axis linear motor; 9. Z-axis linear motor; 10. Drive motor; 11. Drive sprocket; 12. Driven sprocket; 13. Handle. Detailed Implementation

[0016] 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.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Reference Figures 1-2 This utility model provides a rice conveying machine with impurity filtration function, comprising: Gantry 1, Gantry 1 is erected between the transfer conveyor belts; A planar moving assembly is mounted on the gantry 1, and a mechanical gripper 2 is mounted on the planar moving assembly. The container 3 has a lid 4 hinged to its top, a screening trough 5 installed on its top, and a slag discharge port at the bottom of the screening trough 5. Screening box 6 has a cross-section of a regular polygon structure. The top of screening box 6 is horizontally rotatably connected to screening trough 5, and there is a gap between screening box 6 and the bottom of screening trough 5. A passage is opened on one side of screening box 6, and a mesh door 7 is installed on the passage. The transmission mechanism is installed inside the holding box 3 and is connected to the screening box 6. Vibration assembly, which is installed on screening box 6; High-pressure airflow assembly is installed on the cover 4 and is arranged correspondingly to the screening box 6; Control system: The control system is used to control the operation of the overall control device.

[0019] After the control system is activated, the planar moving component moves the mechanical gripper 2 on the gantry 1 to the transfer conveyor belt, precisely grabbing a fixed amount of rice. It then moves along the gantry 1 to above the holding box 3, and through the control system, opens the hinged box cover 4, pouring the rice into the screening box 6 inside the screening trough 5. Next, the transmission mechanism activates, causing the screening box 6 to rotate horizontally within the screening trough 5. Simultaneously, the vibration component causes the screening box 6 to vibrate at high frequency. The polygonal structure of the screening box 6 ensures the rice is fully agitated and does not accumulate. At this time, the high-pressure airflow component sprays high-pressure airflow onto the screening box 6, blowing up light impurities such as dust and broken rice bran. These impurities fall through the mesh door 7 (with a aperture smaller than the rice but larger than the impurities) of the screening box 6 into the gap between the screening box 6 and the bottom of the screening trough 5, and are then discharged from the slag outlet at the bottom of the screening trough 5. After the impurity removal is completed, the transmission mechanism adjusts the angle of the screening box 6 so that the opening faces downward. The clean rice falls from the opening into the holding box 3 for storage under the assistance of vibration. Then, the mechanical gripper 2 returns to the transfer conveyor belt under the drive of the planar moving component, ready for the next operation. Throughout the process, the control system monitors the operating parameters of each component in real time and can dynamically adjust the speed, vibration frequency and airflow intensity according to the amount of rice conveyed to ensure continuous and stable operation.

[0020] Further optimization of the scheme: the planar moving component includes an X-axis linear motor 8 and a Z-axis linear motor 9. The X-axis linear motor 8 is horizontally mounted on the gantry 1, and the Z-axis linear motor 9 is vertically mounted on the slide of the X-axis linear motor 8. An installation arm is vertically mounted on the slide of the Z-axis linear motor 9, and a mechanical gripper 2 is mounted at the bottom of the installation arm.

[0021] The X-axis linear motor 8 is horizontally fixed to the gantry 1, responsible for driving the entire actuator (including the Z-axis linear motor 9, mounting arm, and mechanical gripper 2) to move horizontally between the transfer conveyor belt and the holding box 3. The Z-axis linear motor 9 is vertically mounted on the X-axis slide, and the slide lifts and lowers to drive the mounting arm and the mechanical gripper 2 at the bottom to achieve vertical displacement, completing the closed loop of "descending to grab rice - rising to avoid obstacles - horizontal movement - descending to dump material". The positioners on the X-axis and Z-axis linear motors 9 can collect the slide position data in real time and feed it back to the control system. Through precise calculation and adjustment of the motor operating parameters, the system avoids gripping deviation or collision with other components, ensuring that the mechanical gripper 2 can accurately align with the material picking point of the transfer conveyor belt and the material feeding point of the holding box 3.

[0022] Further optimization of the scheme: the transmission mechanism includes a drive motor 10, the output shaft of which is fixedly connected to a drive sprocket 11; a driven sprocket 12 is rotatably connected to the side wall of the screening tank 5; the drive sprocket 11 and the driven sprocket 12 are connected by chain drive; an annular track is fixedly connected to the side wall of the screening tank 5; the annular track and the drive sprocket 11 are arranged coaxially; a slider is slidably connected to the annular track; an installation shaft is fixedly connected to the center of the side wall of the screening box 6; the installation shaft is rotatably connected to the slider; a connecting plate is fixedly connected to the center of the driven sprocket 12; one end of the connecting plate is fixed to the slider; an internal gear ring is fixedly connected to the side wall of the screening tank 5; the internal gear ring is arranged coaxially with the annular track and its diameter is larger than that of the annular track; a gear is fixedly connected to the installation shaft; the gear meshes with the internal gear ring.

[0023] After the drive motor 10 starts, its output shaft drives the drive sprocket 11 to rotate, which in turn drives the driven sprocket 12 to rotate synchronously via chain transmission. The connecting plate at the center of the drive sprocket 11 is fixed to the slider on the annular track, so the slider revolves around the annular track (coaxial with the drive sprocket 11) with the drive sprocket 11. At the same time, the screening box 6 is fixed to the slider via a mounting shaft. The gear on the mounting shaft meshes with the internal gear ring (with a diameter larger than the annular track and coaxially arranged) on the side wall of the screening tank 5. When the slider revolves, the gear rolls along the internal gear ring, driving the mounting shaft and the screening box 6 to rotate. Ultimately, the screening box 6 achieves a composite motion of "revolution + rotation", which, together with the vibration component, allows the rice to be fully turned over inside the box, avoiding local accumulation and improving the efficiency of impurity separation.

[0024] The design was further optimized so that the vibration component includes a vibration motor, which is installed on the outer wall of the screening box 6.

[0025] The vibrating motor is directly fixed to the outer wall of the screening box 6. After starting, it generates high-frequency mechanical vibration. The vibration energy is transmitted to the rice inside the screening box 6 through the wall of the screening box 6. Combined with the "revolution + rotation" motion of the screening box 6, the high-frequency vibration can break the adsorption force between rice grains, making the rice loose and allowing light impurities such as dust and broken rice bran hidden between the grains to be fully exposed.

[0026] Further optimization of the scheme: the high-pressure airflow component includes an air pipe, which is horizontally installed on the bottom surface of the box cover 4. The air pipe is connected to the high-pressure air pump through a delivery pipe, and several air jet holes are opened on the air pipe.

[0027] The high-pressure airflow generated by the high-pressure air pump is delivered to the air pipe horizontally installed on the bottom of the box cover 4 through the delivery pipe. Several air jet holes on the air pipe (which must face the inside of the screening box 6) spray the airflow evenly onto the surface of the rice turning inside the screening box 6. The impact force of the airflow can blow away light impurities (such as dust and broken rice bran) with a density smaller than rice grains from the rice grains. The impurities are driven by the airflow to pass through the mesh door 7 (the hole diameter is smaller than that of rice and larger than that of impurities) and fall into the screening trough 5, and finally be discharged from the slag discharge port, thus achieving efficient separation of impurities from rice.

[0028] The design was further optimized so that the bottom of the screening tank 5 is a funnel-shaped structure, the slag discharge port is located at the lowest point of the screening tank 5, a slag discharge pipe is installed on the slag discharge port, and a manual valve is installed on the slag discharge pipe.

[0029] The bottom of the screening tank 5 is designed with a funnel-shaped structure, which can use gravity to automatically collect the impurities (dust, broken rice bran) falling from the screen door 7 of the screening box 6 to the lowest point of the tank. The slag discharge port is located at the lowest point, and the impurities are discharged through the slag discharge pipe. The manual valve is used to control the opening and closing of the slag discharge pipe. When the impurities accumulate to a certain amount, the operator manually opens the valve to discharge the slag. Closing the valve can prevent outside air from entering through the slag discharge port during the impurity removal process, which would cause the impurities to flow back.

[0030] To further optimize the design, positioners are installed on the X-axis linear motor 8 and the Z-axis linear motor 9 respectively.

[0031] The design was further optimized so that the screening box 6 and the screen door 7 are fixed together by a buckle, and a handle 13 is installed on the screen door 7.

[0032] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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.

[0033] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A rice conveying machine with impurity filtration function, characterized in that, include: Gantry (1), said gantry (1) is erected between transfer conveyor belts; A planar moving assembly is mounted on the gantry (1) and a mechanical gripper (2) is mounted on the planar moving assembly. A container (3) is provided with a lid (4) hinged to the top of the container (3), and a screening trough (5) is installed on the top of the container (3). A slag discharge port is provided at the bottom of the screening trough (5). Screening box (6), the cross-section of the screening box (6) is a regular polygonal structure, the top of the screening box (6) is horizontally rotatably connected to the screening trough (5), and there is a gap between the screening box (6) and the bottom of the screening trough (5). A passage is opened on one side of the screening box (6), and a mesh door (7) is installed on the passage. A transmission mechanism is installed inside the holding box (3), and the transmission mechanism is in transmission cooperation with the screening box (6); A vibration assembly is mounted on the screening box (6); High-pressure airflow assembly, which is installed on the box cover (4) and arranged correspondingly to the screening box (6); A control system is used to control the operation of the overall control device.

2. The rice conveying machine with impurity filtration function according to claim 1, characterized in that, The planar moving component includes an X-axis linear motor (8) and a Z-axis linear motor (9). The X-axis linear motor (8) is horizontally mounted on the gantry (1), and the Z-axis linear motor (9) is vertically mounted on the slide of the X-axis linear motor (8). An installation arm is vertically mounted on the slide of the Z-axis linear motor (9), and the mechanical gripper (2) is mounted on the bottom of the installation arm.

3. The rice conveying machine with impurity filtration function according to claim 1, characterized in that, The transmission mechanism includes a drive motor (10), the output shaft of which is fixedly connected to a drive sprocket (11), a driven sprocket (12) is rotatably connected to the side wall of the screening trough (5), the drive sprocket (11) and the driven sprocket (12) are connected by a chain drive, an annular track is fixedly connected to the side wall of the screening trough (5), the annular track is coaxially arranged with the drive sprocket (11), a slider is slidably connected to the annular track, an installation shaft is fixedly connected to the center of the side wall of the screening box (6), the installation shaft is rotatably connected to the slider, a connecting plate is fixedly connected to the center of the driven sprocket (12), one end of the connecting plate is fixed to the slider, an internal gear ring is fixedly connected to the side wall of the screening trough (5), the internal gear ring is coaxially arranged with the annular track and its diameter is larger than that of the annular track, a gear is fixedly connected to the installation shaft, and the gear meshes with the internal gear ring.

4. The rice conveying machine with impurity filtration function according to claim 1, characterized in that, The vibration assembly includes a vibration motor, which is mounted on the outer wall of the screening box (6).

5. A rice conveying machine with impurity filtration function according to claim 1, characterized in that, The high-pressure airflow assembly includes an air pipe, which is horizontally installed on the bottom surface of the box cover (4). The air pipe is connected to the high-pressure air pump through a delivery pipe, and several air jet holes are provided on the air pipe.

6. A rice conveying machine with impurity filtration function according to claim 1, characterized in that, The bottom of the screening tank (5) is a funnel-shaped structure, the slag discharge port is located at the lowest point of the screening tank (5), a slag discharge pipe is installed on the slag discharge port, and a manual valve is installed on the slag discharge pipe.

7. A rice conveying machine with impurity filtration function according to claim 2, characterized in that, Positioners are installed on the X-axis linear motor (8) and the Z-axis linear motor (9), respectively.

8. A rice conveying machine with impurity filtration function according to claim 1, characterized in that, The screening box (6) and the screen door (7) are fixed together by a snap fastener, and a handle (13) is installed on the screen door (7).

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