Screening device for rice processing

Abstract

The invention belongs to the technical field of screening, and particularly relates to a screening device for rice processing, which comprises a fixed box, a material guide inclined plate I, a material guide inclined plate II and a material guide inclined plate III which are sequentially aligned end to end and have the same number of partition plate parts are mounted on the fixed box, and the material guide inclined plate II is divided into a plurality of color sorting areas by the partition plate parts; a color sorting box located above the second material guiding inclined plate is installed on the upper portion of the fixing box, and a row of baffles driven by first electric push rods are arranged on the upper portion of the third material guiding inclined plate. The rice is subjected to color sorting through a color sorting box, when the rice meets the requirement, a through hole is closed by a corresponding lifting plate, when the rice does not meet the requirement, the through hole is not closed by the corresponding lifting plate, and the baffle moves upwards; and the rice meeting the requirements slides onto the screening plate to be subjected to grading treatment, and the rice not meeting the requirements falls down from the through holes, so that the rice is automatically subjected to color sorting and grading, color sorting and grading are continuous, and the working efficiency is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of screening, and particularly relates to a screening device for rice processing. Background Art

[0002] The main processes of rice processing include cleaning, hulling, separating paddy from brown rice, milling, grading, color sorting, and polishing, etc. Among them, color sorting is to make rice pass through a sensor and a background board under the vibration of a vibrator, and output signals according to the intensity and color change of light under the action of a light source, so as to select the rice with unqualified color.

[0003] For example, a Chinese patent with the publication number CN220177595U discloses a color sorter for removing off-color rice, which includes two support plates and a storage hopper fixedly installed between the two support plates. A discharge valve pipe is connected to the bottom of the storage hopper, and a blowing component is installed between the two support plates; however, when using this patent to color-sort rice, it is still necessary to additionally use a grading device to grade the rice, and the color-sorting process and the grading process cannot be carried out continuously, and the overall working efficiency of rice processing needs to be improved. Summary of the Invention

[0004] In view of this, the present invention provides a screening device for rice processing in which color sorting and grading are carried out continuously.

[0005] The technical solution is as follows: A screening device for rice processing includes a fixed box. A first guide inclined plate, a second guide inclined plate, and a third guide inclined plate are installed on the fixed box, which are aligned end to end and have the same number of partition parts. The partition parts divide the second guide inclined plate into a plurality of color-sorting areas. A color-sorting box is installed above the second guide inclined plate at the upper part of the fixed box. A row of baffles driven by a first electric push rod are arranged at the upper part of the third guide inclined plate. A row of rectangular through holes are opened in the middle of the third guide inclined plate, and lifting plates are arranged at the through holes. The lifting plates have a state of closing the through holes and a state of not closing the through holes, and the lifting plates correspond to the color-sorting areas one by one. The bottom end of the third guide inclined plate is connected with a screening plate for screening rice.

[0006] Preferably, the screening plate is successively provided with a first screening part, a second screening part, and an inclined part at intervals from top to bottom. A first screen is provided on the first screening part, and a second screen with a smaller mesh size than the first screen is provided on the second screening part. The first screening part, the second screening part, and the inclined part divide the screening plate to form a first channel, a second channel, and a third channel. The first channel is located above the first screening part, the second channel is located between the first screening part and the second screening part, the third channel is located below the second screening part, and the right end of the first channel is communicated with a discharge pipe.

[0007] Preferably, the screening device for rice processing further includes a material guiding frame. The back of the third material guiding inclined plate is connected to the material guiding frame, and the bottom of the material guiding frame is connected to a waste material box. Inside the fixed box, a row of second electric push rods is connected. Connecting rods are connected to the telescopic rods of the second electric push rods, and the connecting rods are all slidably connected to the material guiding frame. The connecting rods are connected to an adjacent lifting plate, and a controller electrically connected to the second electric push rods is provided inside the color sorting box.

[0008] Preferably, the screening device for rice processing further includes a material pushing mechanism. The material pushing mechanism includes an electric slide rail. The electric slide rail is connected to the screening plate, and a material pushing column is installed on the electric slide rail. A connecting column is connected to the bottom of the material pushing column, and a material pushing block reset by a spring is slidably connected to the end of the connecting column. The material pushing column is used to push the rice in the first channel to the discharge pipe, and the material pushing block is used to push the rice in the second channel.

[0009] Preferably, a vibration motor is installed on the back of the first material guiding inclined plate.

[0010] Preferably, the screening device for rice processing further includes a hopper. The top of the first material guiding inclined plate is connected to a hopper with an open bottom. A first rotating shaft driven by a reduction motor is installed at the opening of the hopper, and multiple transverse plates are circumferentially spaced and connected to the first rotating shaft.

[0011] Preferably, the screening device for rice processing further includes an upper cover plate. The upper cover plate is connected to the first material guiding inclined plate, and lower cover plates are connected to both the third material guiding inclined plate and the screening plate.

[0012] Preferably, the screening device for rice processing further includes an adjusting mechanism. The adjusting mechanism includes a sliding frame. A sliding frame is slidably provided on the upper cover plate. A screw rod is rotatably connected to the upper cover plate, and the screw rod is threadedly connected to the sliding frame. Multiple pairs of straight rods are connected to the sliding frame. A row of connecting shafts is rotatably connected to the upper part of the first material guiding inclined plate, and rotating plates are connected to the connecting shafts. The lower ends of the rotating plates are rotatably connected to moving plates, and straight grooves are formed in the moving plates. Each pair of straight rods is located in an adjacent straight groove.

[0013] Preferably, the screening device for rice processing further includes a second rotating shaft. The lower end of the first material guiding inclined plate is rotatably connected to the second rotating shaft, and the second rotating shaft and the first rotating shaft are driven by a pulley assembly. A row of arc-shaped blocks is connected to the second rotating shaft.

[0014] The beneficial effects of the present invention are as follows: 1. The first rotating shaft and the transverse plates rotate, and the rice is intermittently and quantitatively added to the first material guiding inclined plate. The rice is blocked by the baffle, and the rice is color sorted by the color sorting box. When the rice meets the requirements, the corresponding lifting plate closes the through hole. When the rice does not meet the requirements, the corresponding lifting plate does not close the through hole, and the baffle moves upward. The rice that meets the requirements slides onto the screening plate for grading treatment, and the rice that does not meet the requirements falls through the through hole, thereby automatically color sorting and grading the rice. The color sorting and grading are continuous, and the working efficiency is high.

[0015] 2. The upper cover plate covers the first inclined material guide plate, and the two lower cover plates respectively cover the third inclined material guide plate and the screening plate to prevent the rice from flying out and play a role in dust prevention.

[0016] 3. Rotate the screw rod to move the sliding frame and the straight rod. The straight rod pushes the moving plate to move to the right. The moving plate drives the rotating plate to rotate around the connecting shaft. At the same time, the moving plate also moves upward, and the distance between the moving plate and the partition part on its right decreases, so that it can be applicable to different varieties of rice and ensure the screening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 For the present invention Figure 1 It is a schematic diagram of a partial structure in the present invention, in which the fixed box is cut open.

[0019] Figure 3 It is a schematic diagram of the structures of the first inclined material guide plate, the second inclined material guide plate, the third inclined material guide plate, the baffle, the first electric push rod, the lifting plate, the material guide frame, the waste material frame, the second electric push rod and the connecting rod of the present invention.

[0020] Figure 4 It is a schematic diagram of the structures of the lifting plate, the material guide frame, the waste material frame, the second electric push rod and the connecting rod of the present invention, in which one lifting plate is hidden.

[0021] Figure 5 For the present invention Figure 4 It is a schematic diagram of the structure of the waste material frame after being cut open in the present invention.

[0022] Figure 6 It is a schematic diagram of the structures of the screening plate and the material pushing mechanism of the present invention.

[0023] Figure 7 It is a schematic diagram of the connection relationship among the hopper, the first rotating shaft and the cross plate of the present invention.

[0024] Figure 8 It is a schematic diagram of the structures of the upper cover plate, the sliding frame, the screw rod, the rotating plate and the moving plate of the present invention.

[0025] Figure 9 It is a schematic diagram of the adjusting mechanism of the present invention.

[0026] Figure 10 It is a schematic diagram of the connection relationship among the straight rod, the connecting shaft, the rotating plate and the moving plate of the present invention.

[0027] Figure 11 It is a schematic diagram of the connection relationship among the second rotating shaft, the pulley assembly and the arc-shaped block of the present invention.

[0028] Description of the reference numerals: 1 - fixed box, 2 - first inclined guide plate, 20 - partition part, 21 - vibration motor, 3 - second inclined guide plate, 4 - third inclined guide plate, 5 - color sorting box, 6 - baffle, 61 - first electric push rod, 7 - lifting plate, 71 - material guiding frame, 72 - waste material box, 73 - second electric push rod, 74 - connecting rod, 8 - screening plate, 81 - first screening part, 82 - second screening part, 83 - inclined part, 84 - first channel, 85 - second channel, 86 - third channel, 87 - discharge pipe, 91 - electric slide rail, 92 - pushing column, 93 - connecting column, 94 - pushing block, 101 - hopper, 102 - first rotating shaft, 103 - cross plate, 111 - upper cover plate, 112 - lower cover plate, 121 - sliding frame, 122 - screw rod, 123 - straight rod, 124 - connecting shaft, 125 - rotating plate, 126 - moving plate, 127 - straight groove, 131 - second rotating shaft, 132 - pulley assembly, 133 - arc-shaped block. Detailed implementation manners

[0029] The present invention will be further described below in conjunction with the drawings and specific implementation manners.

[0030] Example 1: A screening device for rice processing, referring to Figures 1-3 , including a fixed box 1, a first inclined guide plate 2, a second inclined guide plate 3, a third inclined guide plate 4, a color sorting box 5, a baffle 6, a first electric push rod 61, a lifting plate 7 and a screening plate 8. A first inclined guide plate 2, a second inclined guide plate 3 and a third inclined guide plate 4 are installed on the top of the fixed box 1. The first inclined guide plate 2, the second inclined guide plate 3 and the third inclined guide plate 4 are aligned end to end in sequence and have the same number of partition parts 20. A vibration motor 21 is installed on the back of the first inclined guide plate 2. The partition part 20 divides the second inclined guide plate 3 into a plurality of color sorting areas. A color sorting box 5 located above the second inclined guide plate 3 is installed on the upper part of the fixed box 1. The structure and principle of the color sorting box 5 are prior arts. A row of baffles 6 driven by a first electric push rod 61 are provided on the upper part of the third inclined guide plate 4. A row of rectangular through holes are opened in the middle of the third inclined guide plate 4. Lifting plates 7 are provided at the through holes. The lifting plates 7 have a state of closing the through holes and a state of not closing the through holes. The lifting plates 7 correspond to the color sorting areas one by one. The bottom end of the third inclined guide plate 4 is fixedly connected with a screening plate 8 for screening rice; the screening plate 8 is successively and spacedly provided with a first screening part 81, a second screening part 82 and an inclined part 83 from top to bottom. A first screen is provided on the first screening part 81. A second screen is provided on the second screening part 82. The mesh holes of the second screen are smaller than those of the first screen. The first screening part 81, the second screening part 82 and the inclined part 83 divide the screening plate 8 to form a first channel 84, a second channel 85 and a third channel 86. The first channel 84 is located above the first screening part 81. The second channel 85 is located between the first screening part 81 and the second screening part 82. The third channel 86 is located below the second screening part 82. The right end of the first channel 84 is communicated with a discharge pipe 87.

[0031] Referring to Figures 2-5, the rice processing screening device further includes a material guiding frame 71, a waste material frame 72, a second electric push rod 73 and a connecting rod 74. The back of the third material guiding inclined plate 4 is connected to the material guiding frame 71. The bottom of the material guiding frame 71 is connected to a hollow waste material frame 72. A row of second electric push rods 73 are bolted inside the fixed box 1. Connecting rods 74 are connected to the telescopic rods of the second electric push rods 73. The connecting rods 74 are all slidably connected to the material guiding frame 71. The upper ends of the connecting rods 74 are connected to an adjacent lifting plate 7. A controller (not shown in the figure) is provided inside the color sorting box 5. The controller is electrically connected to the second electric push rod 73.

[0032] Reference Figure 1 and Figure 6 , the rice processing screening device further includes a material pushing mechanism. The material pushing mechanism includes an electric slide rail 91, a material pushing column 92, a connecting column 93 and a material pushing block 94. The left side of the screening plate 8 is connected to the electric slide rail 91. A material pushing column 92 that moves left and right is installed on the electric slide rail 91. The bottom of the material pushing column 92 is fixedly connected to the connecting column 93. The right end of the connecting column 93 is slidably connected to the material pushing block 94. A spring is fixedly connected between the material pushing block 94 and the connecting column 93. The material pushing block 94 is reset by the spring. The material pushing column 92 is used to push the rice in the first channel 84 to the discharge pipe 87. The material pushing block 94 is used to push the rice in the second channel 85.

[0033] Reference Figure 1 and Figure 7 , the rice processing screening device further includes a hopper 101, a first rotating shaft 102 and a cross plate 103. The top of the first material guiding inclined plate 2 is connected to a hopper 101 with an open bottom. A first rotating shaft 102 driven by a reduction motor is installed at the opening of the hopper 101. A plurality of cross plates 103 are circumferentially spaced and connected to the first rotating shaft 102.

[0034] First, add the rice to be screened into the hopper 101. The cross plate 103 will block the opening of the hopper 101. Control the reduction motor to drive the first rotating shaft 102 to rotate, driving the cross plate 103 to rotate together. The cross plate 103 intermittently separates from the inner wall of the hopper 101, causing the opening to open and close intermittently, so as to add the rice intermittently and quantitatively to the first material guiding inclined plate 2. Control the vibration motor 21 to vibrate. Under the action of gravity, the rice slides onto the second material guiding inclined plate 3.

[0035] The rice on the second material guiding inclined plate 3 is blocked by the baffle 6. At this time, the rice on the second material guiding inclined plate 3 is color sorted through the color sorting box 5. When the rice in the color sorting area meets the requirements, the corresponding lifting plate 7 keeps the corresponding through hole closed. When the rice in the color sorting area does not meet the requirements, the controller controls the telescopic rod of the second electric push rod 73 corresponding to the color sorting area to shorten, driving the corresponding connecting rod 74 and the corresponding lifting plate 7 to descend, so that the corresponding lifting plate 7 becomes a state of not closing the through hole; then controls the telescopic rod of the first electric push rod 61 to shorten, driving the baffle 6 to move upward, and the baffle 6 no longer blocks the rice. The rice that meets the requirements in the color sorting area slides down along the third material guiding inclined plate 4 and the lifting plate 7 to the screening plate 8, while the rice that does not meet the requirements in the color sorting area will fall through the through hole to the material guiding frame 71, and the rice that does not meet the requirements is discharged through the waste material box 72 for collection.

[0036] After the rice that meets the color sorting requirements enters the screening plate 8, the rice is classified through the first sieve mesh and the second sieve mesh. The rice with the largest particle size is blocked by the first sieve mesh and stays in the first channel 84. The rice with medium particle size passes through the first sieve mesh and is blocked by the second sieve mesh and stays in the second channel 85. The rice with the smallest particle size passes through the first sieve mesh and the second sieve mesh, and under the guiding action of the inclined part 83, the rice with the smallest particle size enters the third channel 86, so as to classify the color sorted rice and ensure the uniformity of the rice quality.

[0037] Control the electric slide rail 91 to drive the pushing column 92 to move to the right, driving the connecting column 93 and the pushing block 94 to move to the right together. The pushing column 92 pushes the rice in the first channel 84, and the pushing block 94 pushes the rice in the second channel 85 for discharging. When the pushing block 94 contacts the right wall of the screening plate 8, the pushing column 92 and the connecting column 93 continue to move to the right, the spring compresses, and the pushing column 92 pushes the rice in the first channel 84 to the discharging pipe 87 for discharging; in this way, the rice can be automatically color sorted and classified, the color sorting and classification are continuous, and the working efficiency is high.

[0038] Embodiment 2: On the basis of Embodiment 1, referring to Figure 1 , the rice processing screening device further includes an upper cover plate 111 and a lower cover plate 112. The upper cover plate 111 is bolted to the first material guiding inclined plate 2, and the lower cover plates 112 are bolted to the third material guiding inclined plate 4 and the screening plate 8 respectively; the upper cover plate 111 covers the first material guiding inclined plate 2, and the two lower cover plates 112 cover the third material guiding inclined plate 4 and the screening plate 8 respectively, so as to prevent the rice from flying out and play a role in dust prevention during the screening process.

[0039] Embodiment 3: On the basis of Embodiment 2, referring to Figure 1 , Figure 8 , Figure 9 and Figure 10, the rice processing screening device further includes an adjusting mechanism. The adjusting mechanism includes a sliding frame 121, a screw rod 122, a straight rod 123, a connecting shaft 124, a rotating plate 125 and a moving plate 126. There is a sliding frame 121 that slides left and right on the upper cover plate 111. In the middle of the left side of the upper cover plate 111, a screw rod 122 is rotatably connected. The screw rod 122 is threadedly connected to the sliding frame 121. A plurality of pairs of straight rods 123 are fixedly connected to the sliding frame 121. A row of connecting shafts 124 are rotatably connected to the upper part of the material guiding inclined plate 1 2. Rotating plates 125 are fixedly connected to the connecting shafts 124. Moving plates 126 are rotatably connected to the lower ends of the rotating plates 125. Straight grooves 127 are formed in the middle of the moving plates 126. Each pair of straight rods 123 is located in an adjacent straight groove 127.

[0040] When it is necessary to screen different varieties of rice, the particle sizes of different varieties of rice vary greatly. Manually rotate the screw rod 122. Under the action of the threaded connection, the sliding frame 121 slides to the right, driving the straight rod 123 to move to the right. Since each pair of straight rods 123 is located in an adjacent straight groove 127, the straight rod 123 pushes the moving plate 126 to move to the right. The moving plate 126 drives the rotating plate 125 to rotate counterclockwise with the connecting shaft 124 as the axis. The moving plate 126 also moves upward at the same time. Relatively, the straight rod 123 slides downward in the straight groove 127. At this time, the distance between the moving plate 126 and the partition part 20 on its right decreases, so as to adjust the distance between the moving plate 126 and the partition part 20, and it can be applicable to different varieties of rice, ensuring the screening effect.

[0041] Reference Figure 11 , the rice processing screening device further includes a second rotating shaft 131, a pulley assembly 132 and an arc-shaped block 133. The lower end of the material guiding inclined plate 1 2 is rotatably connected to the second rotating shaft 131. The second rotating shaft 131 and the first rotating shaft 102 are driven by the pulley assembly 132. A row of arc-shaped blocks 133 are fixedly connected to the second rotating shaft 131; when the first rotating shaft 102 rotates, the second rotating shaft 131 and the arc-shaped blocks 133 are driven to rotate synchronously under the driving action of the pulley assembly 132. The arc-shaped blocks 133 stir the rice, so that the impurities adhering to the surface of the rice fall off, avoiding the influence of the impurities on the color sorting process of the rice and ensuring the accuracy of the color sorting.

[0042] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A screening device for rice processing, comprising a fixed box (1), characterized in that, A feeding inclined plate one (2), a feeding inclined plate two (3) and a feeding inclined plate three (4) which are aligned end to end in sequence and have the same number of partition parts (20) are installed on the fixed box (1). The partition parts (20) divide the feeding inclined plate two (3) into a plurality of color sorting areas. A color sorting box (5) located above the feeding inclined plate two (3) is installed on the upper part of the fixed box (1). A row of baffles (6) driven by an electric push rod one (61) are arranged on the upper part of the feeding inclined plate three (4). A row of rectangular through holes are formed in the middle of the feeding inclined plate three (4), and lifting plates (7) are arranged at the through holes. The lifting plates (7) have a state of closing the through holes and a state of not closing the through holes. The lifting plates (7) correspond to the color sorting areas one by one. The bottom end of the feeding inclined plate three (4) is connected with a screening plate (8) for screening rice.

2. The screening device for rice processing according to claim 1, characterized in that, The screening plate (8) is sequentially provided with a screening part one (81), a screening part two (82) and an inclined part (83) from top to bottom at intervals. A screen one is arranged on the screening part one (81). A screen two with a mesh smaller than that of the screen one is arranged on the screening part two (82). The screening part one (81), the screening part two (82) and the inclined part (83) divide the screening plate (8) to form a channel one (84), a channel two (85) and a channel three (86). The channel one (84) is located above the screening part one (81). The channel two (85) is located between the screening part one (81) and the screening part two (82). The channel three (86) is located below the screening part two (82). The right end of the channel one (84) is communicated with a discharge pipe (87).

3. The screening device for rice processing according to claim 2, wherein, The rice processing screening device further includes a feeding frame (71). The feeding frame (71) is connected to the back of the feeding inclined plate three (4). The bottom of the feeding frame (71) is connected with a waste frame (72). A row of electric push rods two (73) are connected inside the fixed box (1). Connecting rods (74) are connected to the telescopic rods of the electric push rods two (73). The connecting rods (74) are all slidably connected with the feeding frame (71). The connecting rods (74) are connected with an adjacent lifting plate (7). A controller electrically connected with the electric push rods two (73) is arranged in the color sorting box (5).

4. A screening device for rice processing according to claim 3, characterized in that, The rice processing screening device further includes a pushing mechanism. The pushing mechanism includes an electric slide rail (91). The electric slide rail (91) is connected to the screening plate (8). A pushing column (92) is installed on the electric slide rail (91). A connecting column (93) is connected to the bottom of the pushing column (92). A pushing block (94) reset by a spring is slidably connected to the end of the connecting column (93). The pushing column (92) is used for pushing the rice in the channel one (84) to the discharge pipe (87). The pushing block (94) is used for pushing the rice in the channel two (85).

5. The screening device for rice processing according to claim 4, characterized in that, A vibration motor (21) is installed on the back of the feeding inclined plate one (2).

6. The screening device for rice processing according to claim 5, characterized in that, The screening device for rice processing further includes a hopper (101). The top end of the first inclined guide plate (2) is connected to the hopper (101) with an open bottom. At the opening of the hopper (101), a first rotating shaft (102) driven by a reduction motor is installed, and a plurality of transverse plates (103) are circumferentially and spacedly connected to the first rotating shaft (102).

7. The screening device for rice processing according to claim 6, wherein, The screening device for rice processing further includes an upper cover plate (111). The upper cover plate (111) is connected to the first inclined guide plate (2), and lower cover plates (112) are connected to both the third inclined guide plate (4) and the screening plate (8).

8. A screening device for rice processing according to claim 7, characterized in that, The screening device for rice processing further includes an adjusting mechanism. The adjusting mechanism includes a sliding frame (121). The upper cover plate (111) is provided with a sliding sliding frame (121). A screw rod (122) is rotatably connected to the upper cover plate (111). The screw rod (122) is threadedly connected to the sliding frame (121). A plurality of pairs of straight rods (123) are connected to the sliding frame (121). A row of connecting shafts (124) is rotatably connected to the upper part of the first inclined guide plate (2). Rotating plates (125) are connected to the connecting shafts (124). Moving plates (126) are rotatably connected to the lower ends of the rotating plates (125). Straight grooves (127) are formed in the moving plates (126). Each pair of straight rods (123) is located in an adjacent straight groove (127).

9. The screening device for rice processing according to claim 8, characterized in that, The screening device for rice processing further includes a second rotating shaft (131). The lower end of the first inclined guide plate (2) is rotatably connected to the second rotating shaft (131). The second rotating shaft (131) and the first rotating shaft (102) are driven by a pulley assembly (132). A row of arc-shaped blocks (133) is connected to the second rotating shaft (131).

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