Multi-layer screening device for red dates

Abstract

The utility model relates to the field of red date screening, and discloses a multi-layer screening device for red dates, which comprises a conveying mechanism, the conveying mechanism comprises two runway type conveying frames which are arranged in parallel in the horizontal direction, a plurality of supporting frames are connected to the runway type conveying frames in a sliding manner, and a driving mechanism for driving the supporting frames to circularly move along the runway type conveying frames; a through hole allowing red dates to fall off is formed in the middle of the supporting frame, sliding grooves parallel to the conveying direction are formed in the two opposite sides of the supporting frame, two sliding blocks are slidably connected to the sliding grooves, springs are fixedly installed on the sides, away from each other, of the two sliding blocks, and the sides, away from the sliding blocks, of the springs are fixedly connected with the supporting frame. A rotating shaft is rotationally connected between the two sliding blocks located on the different sides of the supporting frame, a feeding roller is fixedly installed on the rotating shaft, and a driving mechanism for driving the two sliding blocks on the same side to be away from each other is arranged on the supporting frame. The red date feeding device has the following advantages and effects that through opening and closing of the two feeding rollers, it can be ensured that red dates on each supporting frame can fall to the corresponding discharging mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of red date screening, in particular to a multi-layer screening device for red dates. Background Art

[0002] After the red dates are picked from the trees, there are large individual differences among them. In order to improve the grade and commercialization standards of the product, the red dates need to be graded to select dates with relatively consistent volume standards.

[0003] At present, visual technology is usually used for intelligent grading of red dates. After the red dates are marked with grades on the feeding rollers, they are sent to the corresponding discharge ports and pushed into the corresponding discharge channels by the discharge device to achieve grading. The commonly used discharge device is pulse airflow. Since the red dates are transported faster on the feeding rollers and the thrust of the pulse airflow is small, the red dates cannot be discharged smoothly, resulting in a large number of red dates needing to be re-screened, resulting in reduced screening efficiency. Utility Model Content

[0004] The utility model aims to provide a multi-layer screening device for red dates, which has the effects of contactless automatic discharging and improved screening efficiency.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: comprising a conveying mechanism and a red date screening machine, wherein the conveying mechanism is partially located in the red date screening machine, the conveying mechanism comprises two runway-shaped conveying racks arranged in parallel in the horizontal direction, a plurality of support frames are slidably connected to the runway-shaped conveying rack, and a driving mechanism drives the support frames to cyclically move along the runway-shaped conveying rack;

[0006] A through hole for red dates to fall into is provided in the middle of the support frame, and slide grooves parallel to the conveying direction are provided on two opposite sides of the support frame. Two sliders are slidably connected to the slide grooves, and springs are fixedly installed on the sides of the two sliders away from each other. The side of the spring away from the slider is fixedly connected to the support frame, and a rotating shaft is rotatably connected between the two sliders located on different sides of the support frame, and a feeding roller is fixedly installed on the rotating shaft. An opening and closing mechanism for driving the two sliders on the same side to move away from each other is provided on the support frame.

[0007] By adopting the above technical scheme, red dates are intermittently discharged and fall between the two feeding rollers of the support frame. The driving mechanism drives the support frame to move toward the red date screening machine. After the red dates on the support frame pass through the AI ​​intelligent image screening, they are discharged from the corresponding discharging mechanism according to different grades, and the red dates are graded. When the red dates are transported to the discharging mechanism of the corresponding grade, the opening and closing mechanism drives the two sliders away from each other to increase the gap between the two feeding rollers, and the red dates fall from between the two feeding rollers to the discharging mechanism. The transportation and discharging of the red dates are realized by the opening and closing of the two feeding rollers. Compared with using pulse airflow, it can ensure that the red dates on each support frame can fall to the corresponding discharging mechanism. Compared with using a push rod to push the red dates out, the opening and closing of the two feeding rollers can avoid damage to the red dates during the process of the push rod pushing the red dates.

[0008] The utility model is further configured as follows: the opening and closing mechanism includes a fixing plate fixedly mounted on the supporting frame, a cylinder is fixedly mounted on the fixing plate, an output shaft of the cylinder passes through the fixing plate and is fixedly connected to a driving block, and the driving block is slidably connected to the supporting frame in a vertical direction.

[0009] By adopting the above technical scheme, the signal obtained by the image analysis of the red date screening machine is transmitted to the cylinder, the cylinder output shaft is extended, the driving block is lowered, the two sliders are away from each other, the red dates fall to the discharging mechanism, the cylinder output shaft is shortened, the driving block is raised, and the springs at both ends of the two sliders drive the two sliders closer to each other, and the two feeding rollers are closer to each other. When transported to the feed end, it is convenient for the red dates to fall between the two feeding rollers.

[0010] The utility model is further configured as follows: the driving block is in an inverted trapezoidal shape, and the upper ends of the two sliding blocks located on the same side are close to each other to form a V-shaped groove for the driving block to pass through.

[0011] By adopting the above technical solution, the driving block is in an inverted trapezoidal shape, and a V-shaped groove matching the driving block is provided on one side of the upper ends of the sliders close to each other. When the driving block descends, the two sliders can be driven away from each other.

[0012] The utility model is further configured as follows: a rack is fixedly installed in the red date screening machine, a gear is fixedly installed on one side of the rotating shaft, and when the support frame moves into the red date screening machine, the rack meshes with the corresponding gear on the support frame.

[0013] By adopting the above technical solution, when the driving mechanism drives the support frame to move toward the red date screening machine, the gear on the rotating shaft engages with the rack. When the support frame moves, the rack drives the gear to move, causing the rotating shaft to move. The movement of the rotating shaft causes the red dates on the feeding roller to rotate, making it convenient for the red date screening machine to take all-round photos of the red dates, thereby achieving a better screening effect.

[0014] The utility model is further configured as follows: the runway-type conveyor frame includes a feed conveyor frame, a discharge conveyor frame and an arc-shaped conveyor frame connecting both ends of the feed conveyor frame and the discharge conveyor frame; the feed end portion of the feed conveyor frame is located outside the red date screening machine; and a plurality of discharge mechanisms are provided below the discharge conveyor frame.

[0015] The utility model is further configured as follows: the driving mechanism includes a conveyor belt rotatably connected to the outer wall of the runway-type conveyor frame, and a sprocket chain mechanism driving the conveyor belt to rotate; the conveyor belt includes two mutually parallel annular belts, the two annular belts are respectively in contact with the two outer walls of the runway-type conveyor frame, and a plurality of protrusions are evenly arranged on opposite sides of the two annular belts.

[0016] By adopting the above technical solution, two parallel runway-shaped conveyor frames are slidably connected with support frames, an annular belt is attached to the outside of the runway-shaped conveyor frame, a protrusion is provided on the inside of the belt, a sprocket chain mechanism drives the conveyor belt to rotate, and the protrusion on the conveyor belt drives the support frame to slide along the runway-shaped conveyor frame, thereby realizing the movement of the support frame.

[0017] The utility model is further configured as follows: the material discharging mechanism is a material receiving box.

[0018] The utility model is further configured as follows: the discharging mechanism is a discharging conveyor belt.

[0019] The utility model is further configured as follows: baffles are provided on both sides of the conveyor belt.

[0020] By adopting the above technical solution, the discharging mechanism has various forms, which can be a material receiving box or a conveyor belt.

[0021] The utility model is further configured as follows: the diameters of the two end portions of the feeding roller are greater than the diameter of the middle portion.

[0022] By adopting the above technical solution, the red dates are placed in the middle of the feeding rollers during the conveying process.

[0023] The beneficial effects of the utility model are:

[0024] 1. The red dates are intermittently discharged and fall between the two feeding rollers of the support frame. The convex block on the conveyor belt drives the support frame to slide along the runway-shaped conveyor frame. When it moves into the red date screening machine, the rack in the red date screening machine meshes with the gear on the rotating shaft. When the support frame moves, the rack drives the gear to move, causing the rotating shaft to move. The movement of the rotating shaft causes the red dates on the feeding roller to rotate, which is convenient for the red date screening machine to take all-round photos of the red dates, and the screening effect is better. After the red dates on the support frame pass through AI intelligent image screening, when the red dates are transported to the corresponding grade of the discharging mechanism, the signal obtained by the image analysis of the red date screening machine is transmitted to the cylinder, and the cylinder output shaft is extended to make the drive block drop, and the two sliders move away from each other, so that the gap between the two feeding rollers becomes larger, and the red dates fall from between the two feeding rollers to the corresponding discharging mechanism. The cylinder output shaft is shortened to make the drive block rise, and the springs at both ends of the two sliders drive the two sliders to move closer to each other, and the two feeding rollers move closer to each other. When transported to the feed end, it is convenient for the red dates to fall between the two feeding rollers;

[0025] 2. The transportation and discharge of red dates are achieved by opening and closing the two feeding rollers. Compared with using pulse airflow, it can ensure that the red dates on each support frame can fall to the corresponding discharge mechanism. Compared with using a push rod to push the red dates out, the opening and closing of the two feeding rollers can avoid damage to the red dates during the process of the push rod pushing the red dates. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a schematic diagram of the structure of the utility model.

[0028] Figure 2 The utility model is a schematic diagram of the cross-sectional structure of a red date screening machine.

[0029] Figure 3 yes Figure 1 Enlarged structural diagram at A in the middle.

[0030] Figure 4 It is a schematic diagram of the cross-sectional structure of adjacent support frames.

[0031] In the figure, 1. racetrack type conveyor frame; 101. feeding conveyor frame; 102. discharging conveyor frame; 103. arc conveyor frame; 2. red date screening machine; 3. driving mechanism; 31. endless belt; 32. protrusion; 4. supporting frame; 5. through hole; 6. slide groove; 7. slider; 8. spring; 9. rotating shaft; 10. feeding roller; 11. gear; 12. rack; 13. opening and closing mechanism; 131. fixing plate; 132. cylinder; 133. driving block; 14. V-shaped groove; 15. discharging mechanism; 151. discharging conveyor belt; 152. baffle; 16. partition. DETAILED DESCRIPTION

[0032] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] like Figure 1-3 As shown, a multi-layer screening device for red dates includes a conveying mechanism and a red date screening machine 2, the conveying mechanism includes two runway-type conveying frames 1 arranged in parallel in the horizontal direction, the runway-type conveying frame 1 includes a feeding conveying frame 101, a discharging conveying frame 102 and an arc-shaped conveying frame 103 connecting the two ends of the feeding conveying frame 101 and the discharging conveying frame 102, the feeding end portion of the feeding conveying frame 101 is located outside the red date screening machine 2, and a plurality of discharging mechanisms 15 are arranged below the discharging conveying frame 102, and the plurality of discharging mechanisms 15 are discharging conveyor belts 151 arranged in parallel, and baffles 152 are arranged on both sides of the conveyor belts.

[0034] A plurality of support frames 4 are slidably connected to the runway-shaped conveyor frame 1, and a driving mechanism 3 is provided on the runway-shaped conveyor frame for driving the support frames 4 to move cyclically along the runway-shaped conveyor frame. The driving mechanism 3 includes a conveyor belt rotatably connected to the outer wall of the runway-shaped conveyor frame 1, and a sprocket chain mechanism for driving the conveyor belt to rotate. The conveyor belt includes two annular belts 31 parallel to each other, and the two annular belts 31 are respectively attached to the two outer walls of the runway-shaped conveyor frame 1, and a plurality of protrusions 32 are evenly provided on opposite sides of the two annular belts 31.

[0035] like Figure 3As shown, a through hole 5 is provided in the middle of the support frame 4 for the red dates to fall, and slide grooves 6 parallel to the conveying direction are provided on the two opposite sides of the support frame 4. Two sliders 7 are slidably connected to the slide grooves 6, and the upper ends of the two sliders 7 on the same side are close to each other to form a V-shaped groove 14 for the driving block 133 to pass through. Springs 8 are fixedly installed on the sides of the two sliders 7 that are away from each other, and the side of the spring 8 away from the slider 7 is fixedly connected to the support frame 4. A rotating shaft 9 is rotatably connected between the two sliders 7 on different sides of the support frame 4, and a feeding roller 10 is fixedly installed on the rotating shaft 9. The diameter of the two end portions of the feeding roller 10 is larger than the diameter of the middle portion, so that the red dates are in the middle of the feeding roller 10 during the conveying process. A gear 11 is fixedly installed on one side of the rotating shaft 9, and an opening and closing mechanism 13 for driving the two sliders 7 on the same side to move away from each other is provided on the support frame 4.

[0036] The opening and closing mechanism 13 includes a fixed plate 131 fixedly mounted on the support frame 4, on which a cylinder 132 is fixedly mounted, and the output shaft of the cylinder 132 passes through the fixed plate 131 and is fixedly connected to a driving block 133, which is an inverted trapezoid and is slidably connected to the support frame 4 in the vertical direction.

[0037] like Figure 2 As shown, a rack 12 is fixedly installed in the red date screening machine 2. When the support frame 4 moves into the red date screening machine 2, the rack 12 meshes with the gear 11 on the corresponding support frame 4.

[0038] like Figure 4 As shown, in order to prevent the red dates from falling outside the support frame 4 when the red dates are intermittently discharged, a partition 16 is fixedly installed between adjacent support frames 4, and the partition 16 forms an inverted V-shaped structure. The partition 16 is an elastic structure so that it can be stretched when passing through the arc-shaped conveying frame 103.

[0039] Working principle of this utility model:

[0040] The red dates are discharged intermittently and fall between the two feeding rollers 10 of the support frame 4. The protrusion 32 on the conveyor belt drives the support frame 4 to slide along the runway-shaped conveyor frame. When it moves into the red date screening machine 2, the rack 12 in the red date screening machine 2 engages with the gear 11 on the rotating shaft 9. When the support frame 4 moves, the rack 12 drives the gear 11 to move, so that the rotating shaft 9 moves. The movement of the rotating shaft 9 causes the red dates on the feeding roller 10 to rotate, which makes it convenient for the red date screening machine 2 to take all-round photos of the red dates, and the screening effect is better. After the red dates on the support frame 4 pass through the AI ​​intelligent image screening, when the red dates are transported to the corresponding grade of the discharging mechanism 15, the signal obtained by the image analysis of the red date screening machine 2 is transmitted to the cylinder 132, and the output shaft of the cylinder 132 is extended to make the driving block 133 descend, and the two sliders 7 move away from each other, so that the gap between the two feeding rollers 10 becomes larger, and the red dates fall from between the two feeding rollers 10 to the corresponding discharging mechanism 15, and the output shaft of the cylinder 132 is shortened to make the driving block 133 rise, and the springs 8 at both ends of the two sliders 7 drive the two sliders 7 to approach each other, and the two feeding rollers 10 to approach each other. When transported to the feeding end, it is convenient for the red dates to fall between the two feeding rollers 10.

Claims

1. A multi-layer screening device for red dates, characterized in that: It comprises a conveying mechanism and a red date screening machine (2), wherein the conveying mechanism is partially located inside the red date screening machine (2), the conveying mechanism comprises two runway-shaped conveying frames (1) arranged in parallel in a horizontal direction, a plurality of support frames (4) are slidably connected to the runway-shaped conveying frames (1), and a driving mechanism (3) drives the support frames (4) to cyclically move along the runway-shaped conveying frames; A through hole (5) is provided in the middle of the support frame (4) for the red dates to fall into, and slide grooves (6) are provided on two opposite sides of the support frame (4) and are parallel to the conveying direction. Two sliders (7) are slidably connected to the slide grooves (6), and springs (8) are fixedly installed on the sides of the two sliders (7) that are away from each other. The side of the spring (8) that is away from the sliders (7) is fixedly connected to the support frame (4), and a rotating shaft (9) is rotatably connected between the two sliders (7) located on different sides of the support frame (4), and a feeding roller (10) is fixedly installed on the rotating shaft (9). An opening and closing mechanism (13) for driving the two sliders (7) on the same side to move away from each other is provided on the support frame (4).

2. A multi-layer screening device for red dates according to claim 1, characterized in that: The opening and closing mechanism (13) comprises a fixing plate (131) fixedly mounted on the supporting frame (4); a cylinder (132) is fixedly mounted on the fixing plate (131); an output shaft of the cylinder (132) passes through the fixing plate (131) and is fixedly connected to a driving block (133); and the driving block (133) is slidably connected to the supporting frame (4) in a vertical direction.

3. A multi-layer screening device for red dates according to claim 2, characterized in that: The driving block (133) is in the shape of an inverted trapezoid, and the upper ends of the two sliding blocks (7) located on the same side are close to each other to form a V-shaped groove (14) for the driving block (133) to pass through.

4. A multi-layer screening device for red dates according to claim 1, characterized in that: A rack (12) is fixedly installed in the red date screening machine (2), and a gear (11) is fixedly installed on one side of the rotating shaft (9). When the support frame (4) moves into the red date screening machine (2), the rack (12) meshes with the gear (11) on the corresponding support frame (4).

5. The multi-layer screening device for red dates according to claim 1, characterized in that: The runway-type conveyor frame (1) comprises a feeding conveyor frame (101), a discharging conveyor frame (102), and an arc-shaped conveyor frame (103) connecting the two ends of the feeding conveyor frame (101) and the discharging conveyor frame (102); the feeding end portion of the feeding conveyor frame (101) is located outside the red date screening machine (2); and a plurality of discharging mechanisms (15) are provided below the discharging conveyor frame (102).

6. A multi-layer screening device for red dates according to claim 5, characterized in that: The driving mechanism (3) comprises a conveyor belt rotatably connected to the outer wall of the runway-type conveyor frame (1), and a sprocket chain mechanism for driving the conveyor belt to rotate. The conveyor belt comprises two mutually parallel annular belts (31). The two annular belts (31) are respectively in contact with the two outer walls of the runway-type conveyor frame (1), and a plurality of protrusions (32) are evenly arranged on opposite sides of the two annular belts (31).

7. A multi-layer screening device for red dates according to claim 5, characterized in that: The material discharging mechanism (15) is a material receiving box.

8. The multi-layer screening device for red dates according to claim 5, characterized in that: The discharging mechanism (15) is a discharging conveyor belt (151).

9. A multi-layer screening device for red dates according to claim 8, characterized in that: Baffles (152) are provided on both sides of the conveyor belt.

10. The multi-layer screening device for red dates according to claim 1, characterized in that: The diameters of the two end portions of the feeding roller (10) are larger than the diameter of the middle portion.

Images