Bean planting screening equipment

Abstract

A bean planting screening device belongs to the technical field of seed screening devices, including a controller, a workbench, a screening tray, a weighing sensor, a first negative pressure screening mechanism, a second negative pressure screening mechanism, a feeding box, and a shrunken bean seed screening mechanism. The feeding box is connected to the screening tray through the shrunken bean seed screening mechanism. A first negative pressure screening mechanism and a second negative pressure screening mechanism are provided above the screening tray. The first negative pressure screening mechanism and the second negative pressure screening mechanism move back and forth along the upper end of the screening tray through a driving mechanism. The first negative pressure screening mechanism is used to screen incomplete bean seeds or residues with a particle size smaller than a preset standard or small and incompletely developed seeds. The second negative pressure screening mechanism is used to screen hollow seeds. The controller is provided with a storage unit. The storage unit pre-stores the weight data of seeds of a single grain with a set standard size. The screening tray is provided with a weighing sensor. During the screening process, the weight of the seeds is used to determine whether they are qualified and high-quality bean seeds.

Description

Technical Field

[0001] The invention belongs to the technical field of seed screening devices, and in particular relates to bean planting screening equipment. Background Art

[0002] Legumes generally refer to all legumes that produce pods. They are diverse, nutritious, and cultivated worldwide. In recent years, legumes have become increasingly popular due to their high nutritional value and pleasant taste. However, legume cultivation typically requires screening to select the good beans for planting. This screening process is typically done manually, by pouring the beans into a basin of water and using the water's buoyancy to separate the necrotic seeds. This manual screening process requires repeated salvaging of the necrotic seeds, resulting in low efficiency.

[0003] Despite this, the above screening method can only screen out necrotic or hollow bean seeds. As for the defective bean seeds and the wrinkled and shrunken ones, many of them will sink to the bottom of the water and cannot be screened out in this way. Therefore, subsequent processes are still needed to obtain truly high-quality bean seeds.

[0004] Based on the above reasons, it is necessary to develop a device that can comprehensively screen bean seeds, so as to obtain truly excellent bean seeds while liberating labor. Summary of the Invention

[0005] The invention discloses a bean planting screening device, which aims to comprehensively screen bean seeds, thereby freeing up labor and obtaining truly high-quality bean seeds.

[0006] To achieve the above object, the technical solution of the present invention is:

[0007] A bean planting screening device includes a controller, a workbench, a screening tray, a weighing sensor, a first negative pressure screening mechanism, a second negative pressure screening mechanism, a feeding box, and a shrunken bean seed screening mechanism. The rear end of the upper surface of the workbench is provided with a feeding box, and the front end is provided with a screening tray. The feeding box is connected to the screening tray through the shrunken bean seed screening mechanism. The first negative pressure screening mechanism and the second negative pressure screening mechanism are provided above the screening tray. The first negative pressure screening mechanism and the second negative pressure screening mechanism are fixedly connected and move back and forth along the upper end of the screening tray through a driving mechanism. The first negative pressure screening mechanism is used to screen out incomplete bean seeds or residues with a particle size smaller than a preset standard or small and incompletely developed seeds. The second negative pressure screening mechanism is used to screen out seeds that meet the preset standard but are hollow. The controller is provided with a storage unit, and the storage unit pre-stores the weight data of seeds of a set standard size for a single seed. The screening tray is provided with a weighing sensor. During the screening process, the weight of the seeds is used to determine whether they are qualified and high-quality bean seeds.

[0008] Preferably, the feed box is fixedly connected to the top of the workbench through a support frame, and a discharge port for only allowing a single layer of bean seeds to pass through is opened on the outer wall of the feed box facing the screening plate. The discharge port is provided with a sliding door, and both ends of the sliding door are slidingly connected to the side wall of the feed box through a linear slide groove. A first cylinder is also provided on the side wall of the feed box, and the fixed end of the first cylinder is fixedly connected to the side wall of the feed box, and the telescopic end is connected to the upper end of the sliding door. The opening and closing of the discharge port is controlled by the telescopic movement of the first cylinder, and a feeding port is provided at the top of the feed box.

[0009] Preferably, the shrunken bean seed screening mechanism includes a discharge chute connected to the discharge port, the lower end of the discharge chute extends to one side of the screening plate, and is used to feed the screening plate, the upper part of the outer surface of the discharge chute is a rough section, and the lower part is a smooth section, the rough section is provided with anti-slip grooves, the rough section is used to intercept the shrunken bean seeds and allow the bean seeds with smooth and plump surfaces to slide down, during the feeding process, the controller controls the first cylinder to act intermittently, each time it acts, the sliding door is opened and an appropriate amount of seeds are released, the shrunken seeds are left in the rough section due to the large friction between the anti-slip grooves, and the smooth and plump seeds slide into the screening plate.

[0010] Preferably, the bottom end of the screening plate is fixedly connected to a base, the base is slidably connected to the upper surface of the workbench, and the screening plate is connected to the upper surface of the workbench through a rocking mechanism.

[0011] Preferably, the lower end of the base is slidably connected to the linear slide rail on the upper surface of the workbench, and a second cylinder is fixedly provided on the upper surface of the workbench. The fixed end of the second cylinder is fixedly connected to the upper surface of the workbench, and the telescopic end is fixedly connected to the end of the base. When the second cylinder repeatedly telescopes, the screening plate is shaken, and the bean seeds entering the screening plate are flattened.

[0012] Preferably, a plurality of grooves are evenly distributed on the bottom of the screening plate, a weighing sensor is embedded in the bottom of the groove, and a weighing tray is also provided in the groove. The outer wall of the weighing tray fits in the gap with the side wall of the groove, and the top of the weighing tray is flush with the upper surface of the bottom of the screening plate. The weighing sensors are respectively connected to the controller signal through wires.

[0013] Preferably, mounting plates are provided on the left and right ends of the upper surface of the workbench respectively, and guide rods and lead screws are connected side by side between the tops of the two mounting plates. Both ends of the lead screw are rotatably connected to the corresponding mounting plates, and one end thereof passes through the outer surface of the mounting plate and is fixedly connected to the output shaft of the stepper motor preset on the outer surface of the mounting plate. The stepper motor constitutes the driving mechanism of the first negative pressure screening mechanism and the second negative pressure screening mechanism, and both ends of the guide rod are fixedly connected to the corresponding mounting plates.

[0014] Preferably, two movable plates are screwed side by side on the lead screw, the guide rod passes through the two movable plates and is slidably connected to the two movable plates, and a support plate is fixedly connected to the bottom ends of the two movable plates. The first negative pressure screening mechanism includes a first recovery box fixedly arranged on the left end of the upper surface of the support plate, a first negative pressure suction mechanism arranged on the inner surface of the left movable plate, and a first negative pressure groove arranged on the left side of the lower surface of the support plate. The notch of the first negative pressure groove is provided with a first screen, the mesh size of the first screen is smaller than the size of the preset standard high-quality bean seeds, the top of the first negative pressure groove is closed and connected to the first negative pressure suction mechanism through a pipe. The input end is connected, the output end of the first negative pressure suction mechanism is connected to the first recovery box, the second negative pressure screening mechanism includes a second recovery box arranged on the right end of the upper surface of the pallet, a second negative pressure groove arranged on the right side of the lower surface of the pallet, and a second negative pressure suction mechanism arranged on the inner surface of the right movable plate. The output end of the second negative pressure suction mechanism is connected to the second recovery box, the input end of the second negative pressure suction mechanism is connected to the top of the second negative pressure groove, and the bottom open end of the second negative pressure groove is provided with a second screen. The mesh size of the second screen is consistent with the size of the preset standard high-quality bean seeds, and is used to pass through the hollow bean seeds.

[0015] Preferably, the first negative pressure suction mechanism is connected to the first negative pressure tank through a first connecting tube, and the second negative pressure suction mechanism is connected to the second negative pressure tank through a second connecting tube. Gas pressure sensors are respectively provided in the first connecting tube and the second connecting tube. The gas pressure sensors are connected to the controller signal through a wire. The controller collects incomplete seeds or residues of beans with a particle size smaller than a preset standard or small and incompletely developed seeds and hollow bean seeds by controlling the power of the first negative pressure suction mechanism and the second negative pressure suction mechanism.

[0016] Preferably, a first visual sensor is provided at the left end of the lower surface of the support plate, and a second visual sensor is provided at the right end of the lower surface of the support plate. The first visual sensor and the second visual sensor are respectively connected to the controller signal through wires, and the controller counts the number of beans in each weighing tray based on the image information of the first visual sensor and the second visual sensor.

[0017] A method for using a bean planting screening device comprises the following steps:

[0018] (1) Feeding: The controller controls the first cylinder to operate intermittently. Each time the cylinder operates, the sliding door is opened and an appropriate amount of seeds are released. The shrunken seeds are left behind by the rough section due to the large friction between the anti-slip grooves, while the smooth and plump seeds slide into the screening plate. The remaining seeds are removed manually using tools.

[0019] (2) Flattening: The second cylinder repeatedly stretches and shakes the screening plate, flattening the seeds in the screening plate and shaking them into the weighing tray;

[0020] (3) Collection of defective products: The stepper motor controls the support plate to move from one end of the screening plate to the other end. During the movement, the first negative pressure suction mechanism uses the negative pressure attraction to suck the incomplete beans seeds or residues or small, underdeveloped seeds with a particle size smaller than the preset standard in each weighing tray into the first recycling box. Then the second negative pressure suction mechanism sucks the hollow seeds in each weighing tray into the second recycling box. During this process, the first visual sensor takes a picture of the seeds in each weighing tray before recycling, and the controller calculates the number A of beans in the weighing tray according to the set program. The second visual sensor takes a picture of the seeds in each weighing tray after recycling, and the controller calculates the number B of beans in the weighing tray according to the set program.

[0021] (4) Confirmation and recovery of high-quality bean seeds: When the total weight of the seeds in a weighing tray divided by the number of beans matches the weight data of the seeds of the standard size set for a single seed in the storage unit, the bean seeds in the weighing tray are determined to be high-quality bean seeds; after the first negative pressure screening mechanism and the second negative pressure screening mechanism repeatedly move left and right for the set recovery times, the weighing tray that meets the high-quality bean seed standards is taken out, and the high-quality bean seeds are collected into the set container A, and the remaining seeds are collected into the container B. The seeds in the container B are used as the next level of bean seeds.

[0022] Preferably, the controller compares the number A of beans in the weighing tray detected by the first visual sensor with the number B of beans on the same weighing tray that have been fully recovered and have high-quality bean varieties left, calculates the proportion of the weight of high-quality bean varieties in the raw material to the total weight, calculates the sum of the proportions of several weighing trays and takes the average, and uses this average as the content ratio A of high-quality bean varieties in the raw material bean varieties; by comparing the content ratios A of different raw material bean varieties, the raw material bean variety with a higher content ratio A is determined to be a better bean variety.

[0023] The beneficial effects of the bean planting screening equipment of the present invention are as follows: the present invention can comprehensively screen bean seeds for atrophy, incomplete development, residue, hollowness, etc., and obtain high-quality bean seeds and second-level bean seeds after screening. The weight of a single seed is calculated by weighing, and the quality of the high-quality bean seeds is accurately controlled, which not only saves manual labor but also improves the screening effect.

[0024] Figures in the specification

[0025] Figure 1 , a schematic diagram of the top view structure of the present invention.

[0026] Figure 2 , a schematic diagram of the top view of the screening plate of the present invention.

[0027] Figure 3 , a schematic diagram of the front structure of the present invention.

[0028] 1-workbench, 2-feeding port, 3-discharging chute, 3-1-rough section, 3-2-smooth section, 4-base, 5-groove, 6-weighing tray, 7-screening plate, 8-second cylinder, 9-support plate, 10-moving plate, 11-guide rod, 12-screw, 13-mounting plate, 14-stepping motor, 15-first negative pressure suction mechanism, 16-second negative pressure suction mechanism, 17-first recovery box, 18-second recovery box, 19-feeding box, 20-sliding door, 21-first cylinder, 22-discharging port, 23-first negative pressure trough, 24-first visual sensor, 25-second visual sensor. DETAILED DESCRIPTION

[0029] The following description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0030] Example 1

[0031] A bean planting screening device, such as Figure 1-3 As shown, it includes a controller, a workbench 1, a screening tray 7, a weighing sensor, a first negative pressure screening mechanism, a second negative pressure screening mechanism, a feeding box 19, and a shrunken bean seed screening mechanism. The rear end of the upper surface of the workbench 1 is provided with a feeding box 19, and the front end is provided with a screening tray 7. The feeding box 19 is connected to the screening tray 7 through the shrunken bean seed screening mechanism. The first negative pressure screening mechanism and the second negative pressure screening mechanism are provided above the screening tray 7. The first negative pressure screening mechanism and the second negative pressure screening mechanism are fixedly connected and move back and forth along the upper end of the screening tray 7 through a driving mechanism. The first negative pressure screening mechanism is used to screen out incomplete beans or residues with a particle size smaller than a preset standard or small and incompletely developed seeds. The second negative pressure screening mechanism is used to screen out seeds that meet the preset standard but are hollow. The controller is provided with a storage unit, and the storage unit pre-stores the weight data of seeds of a set standard size for a single seed. The screening tray 7 is provided with a weighing sensor. During the screening process, the weight of the seeds is used to determine whether they are qualified and high-quality bean seeds.

[0032] Example 2

[0033] Based on Example 1, this embodiment discloses:

[0034] like Figure 1 、 3As shown, the feed box 19 is fixedly connected to the top of the workbench 1 through a support frame (not shown in the figure), and the outer wall of the feed box 19 facing the screening plate 7 is provided with a discharge port 22 for only a single layer of bean seeds to pass through, and the discharge port 22 is provided with a sliding door 20, and both ends of the sliding door 20 are slidingly connected to the side wall of the feed box 19 through a linear slide groove (not marked in the figure), and a first cylinder 21 is also provided on the side wall of the feed box 19, and the fixed end of the first cylinder 21 is fixedly connected to the side wall of the feed box 19, and the telescopic end is connected to the upper end of the sliding door 20, and the opening and closing of the discharge port 22 is controlled by the telescopic movement of the first cylinder 21, and a feeding port 2 is provided at the top of the feed box 19.

[0035] Example 3

[0036] Based on Example 2, this embodiment discloses:

[0037] like Figure 1 、 3 As shown, the shrunken bean seed screening mechanism includes a discharge chute 3 connected to the discharge port 22, the lower end of the discharge chute 3 extends to one side of the screening plate 7, and is used to feed the screening plate 7, the upper part of the outer surface of the discharge chute 3 is a rough section 3-1, and the lower part is a smooth section 3-2, the rough section 3-1 is provided with anti-slip grooves, the rough section is used to intercept the shrunken bean seeds and allow the bean seeds with smooth and plump surfaces to slide down, during the feeding process, the controller controls the first cylinder 21 to act intermittently, each time it acts, the sliding door 20 is opened and an appropriate amount of seeds are released, the shrunken seeds are left in the rough section due to the large friction between the anti-slip grooves, and the smooth and plump seeds slide into the screening plate.

[0038] In this embodiment, the specific arrangement of the anti-slip grooves, the lengths of the rough and smooth sections, and the inclination angle of the discharge chute can be optimized through experimental verification and are not specifically limited in this invention. The goal is to retain shrunken seeds while allowing smooth, plump seeds to flow out. Shrunken bean seeds, due to their numerous wrinkles, experience greater friction with the anti-slip grooves, trapping them. However, smooth, plump seeds are not affected by this.

[0039] Example 4

[0040] Based on Example 3, this embodiment discloses:

[0041] like Figure 1-3 As shown, the bottom end of the screening plate 7 is fixedly connected to the base 4, the base 4 is slidably connected to the upper surface of the workbench 1, and the screening plate 7 is connected to the upper surface of the workbench through a rocking mechanism.

[0042] In this embodiment, the function of the shaking mechanism is to spread the bean seeds flat in the screening tray to facilitate the next step of screening. The shaking method can be unidirectional along the horizontal plane or in multiple directions along the horizontal plane.

[0043] Example 5

[0044] Based on Example 4, this embodiment discloses:

[0045] like Figure 1-3 As shown, the lower end of the base 4 is slidably connected to a linear slide rail (not marked in the figure) on the upper surface of the workbench 1, and a second cylinder 8 is fixedly provided on the upper surface of the workbench 1. The fixed end of the second cylinder 8 is fixedly connected to the upper surface of the workbench 1, and the telescopic end is fixedly connected to the end of the base 4. When the second cylinder 8 repeatedly telescopes and extends, the screening plate 7 is shaken, and the bean seeds entering the screening plate 7 are flattened.

[0046] Example 6

[0047] Based on Example 5, this embodiment discloses:

[0048] like Figure 1-3 As shown, the bottom of the screening tray 7 is evenly distributed with a number of grooves 5. Load cells (not shown) are embedded in the bottom of the grooves 5. A weighing tray 6 is also located within the grooves 5. The outer wall of the weighing tray 6 fits neatly within the sidewalls of the grooves 5. The top of the weighing tray 6 is flush with the upper surface of the bottom of the screening tray 5 to prevent bean seeds from entering the weighing tray. The load cells are connected to the controller signal via wires. The load cells are used to weigh the seeds in the weighing tray.

[0049] Example 7

[0050] Based on Example 6, this embodiment discloses:

[0051] like Figure 1-3 As shown, mounting plates 13 are respectively provided at the left and right ends of the upper surface of the workbench 1, and a guide rod 11 and a lead screw 12 are connected side by side between the tops of the two mounting plates 13. Both ends of the lead screw 12 are rotatably connected to the corresponding mounting plates 13, and one end thereof passes through the outer surface of the mounting plate 13 and is fixedly connected to the output shaft of the stepper motor 14 preset on the outer surface of the mounting plate 13. The stepper motor constitutes the driving mechanism of the first negative pressure screening mechanism and the second negative pressure screening mechanism, and both ends of the guide rod are fixedly connected to the corresponding mounting plates.

[0052] like Figure 1 、 3As shown, two movable plates 10 are screwed side by side on the lead screw 12, the guide rod 11 passes through the two movable plates 10 and is slidably connected to the two movable plates 10, and a support plate 9 is fixedly connected to the bottom ends of the two movable plates 10. The first negative pressure screening mechanism includes a first recovery box 17 fixedly arranged on the left end of the upper surface of the support plate 9, a first negative pressure suction mechanism 15 arranged on the inner surface of the left movable plate, and a first negative pressure groove 23 arranged on the left side of the lower surface of the support plate 9. The notch of the first negative pressure groove 23 is provided with a first screen (not shown in the figure), the mesh size of the first screen is smaller than the size of the preset standard high-quality bean seeds, the top of the first negative pressure groove 23 is closed and connected to the first negative pressure suction mechanism 1 through a pipe. 5, the output end of the first negative pressure suction mechanism 15 is connected to the first recovery box 17, the second negative pressure screening mechanism includes a second recovery box 18 provided at the right end of the upper surface of the support plate 9, a second negative pressure groove (not marked in the figure) provided on the right side of the lower surface of the support plate 9, and a second negative pressure suction mechanism 16 provided on the inner surface of the right movable plate, the output end of the second negative pressure suction mechanism 16 is connected to the second recovery box 18, the input end of the second negative pressure suction mechanism 16 is connected to the top of the second negative pressure groove, and the bottom open end of the second negative pressure groove is provided with a second screen (not shown in the figure), the mesh size of the second screen is consistent with the size of the preset standard high-quality bean seeds, and is used to pass the hollow bean seeds.

[0053] In this embodiment, the negative pressure tank is preferably a cubic structure with an open lower end, and its width is consistent with the width of the screening plate. It is used to absorb and collect beans with small particle size or residue or hollow beans. The first negative pressure tank and the second negative pressure tank are moved back and forth by the driving mechanism to screen the bean seeds in the screening plate.

[0054] Example 8

[0055] Based on Example 7, this embodiment discloses:

[0056] like Figure 1 、 3 As shown, the first negative pressure suction mechanism 15 is connected to the first negative pressure tank 23 through a first connecting tube (not marked in the figure), and the second negative pressure suction mechanism 16 is connected to the second negative pressure tank through a second connecting tube (not marked in the figure). Gas pressure sensors (not shown in the figure) are respectively provided in the first connecting tube and the second connecting tube. The gas pressure sensors are connected to the controller signal through a wire. The controller collects the incomplete beans seeds or residues with a particle size smaller than the preset standard or the small and incompletely developed seeds and the hollow bean seeds by controlling the power of the first negative pressure suction mechanism and the second negative pressure suction mechanism.

[0057] In this embodiment, bean seeds with a particle size smaller than a preset standard, such as incomplete or residue seeds or small, underdeveloped seeds, can pass through the first sieve, while high-quality bean seeds, which are large, cannot pass through the first sieve. On the other hand, hollow bean seeds can be sucked up by the second negative pressure suction mechanism and pass through the second sieve, while normal, high-quality bean seeds are not sucked up due to their own weight. This principle allows for the selection of bean seeds.

[0058] Example 9

[0059] Based on Example 8, this embodiment discloses:

[0060] like Figure 3 As shown, a first visual sensor 24 is provided at the left end of the lower surface of the support plate 9, and a second visual sensor 25 is provided at the right end of the lower surface of the support plate 9. The first visual sensor 24 and the second visual sensor 25 are respectively connected to the controller signal through wires. The controller counts the number of beans in each weighing tray 6 based on the image information of the first visual sensor 24 and the second visual sensor 25.

[0061] Example 9

[0062] Based on Example 8, this embodiment discloses:

[0063] A method for using a bean planting screening device, such as Figure 1-3 As shown, the following steps are included:

[0064] (1) Feeding: The controller controls the first cylinder to operate intermittently. Each time the cylinder operates, the sliding door is opened and an appropriate amount of seeds are released. The shrunken seeds are left behind by the rough section due to the large friction between the anti-slip grooves, and the smooth and plump seeds slide into the screening plate. The remaining seeds are removed manually using tools. The specific amount of the appropriate amount of seeds is determined so that the smooth and plump seeds do not interfere with the movement of the rough seeds along the discharge chute, or as little as possible, to prevent the shrunken seeds from sliding into the screening plate under the push of the smooth and plump seeds. In addition, tools used manually include cleaning tools, suction tools, etc.

[0065] (2) Flattening: The second cylinder repeatedly stretches and shakes the screening plate, flattening the seeds in the screening plate and shaking them into the weighing tray. Since the inside of the weighing tray is lower than the bottom of the screening plate, it is difficult for the bean seeds to be shaken out after entering the weighing tray.

[0066] (3) Collection of unqualified products: The stepper motor controls the support plate to move from one end of the screening plate to the other end. During the movement, the first negative pressure suction mechanism uses the negative pressure attraction to suck the incomplete beans seeds or residues or small and incomplete seeds with a particle size smaller than the preset standard in each weighing tray into the first recycling box. Then the second negative pressure suction mechanism sucks the hollow seeds in each weighing tray into the second recycling box. During this process, the first visual sensor takes a picture of the seeds in each weighing tray before recycling, and the controller calculates the number A of beans in the weighing tray according to the set program. The second visual sensor takes a picture of the seeds in each weighing tray after recycling, and the controller calculates the number B of beans in the weighing tray according to the set program. The final number B of beans is the number of high-quality bean seeds in the weighing tray.

[0067] (4) Confirmation and recovery of high-quality bean seeds: When the total weight of the seeds in a certain weighing tray divided by the number of beans matches the weight data of the seeds of the standard size set for a single seed in the storage unit (the meaning of matching here is equal to, greater than, or less than the weight of the seeds of the standard size set for a single seed within a certain range), the bean seeds in the weighing tray are determined to be high-quality bean seeds; after the first negative pressure screening mechanism and the second negative pressure screening mechanism repeatedly move left and right for the set number of recovery times, the weighing tray that meets the high-quality bean seed standards is taken out, and the high-quality bean seeds are collected into the set container A, and the remaining seeds are collected into the container B. The seeds in the container B are used as the next level of bean seeds.

[0068] Example 10

[0069] Based on Example 9, this embodiment discloses:

[0070] like Figure 1-3 As shown, the controller compares the number A of beans in the weighing tray detected by the first visual sensor with the number B of beans on the same weighing tray that have been fully recovered and have high-quality bean varieties left, calculates the proportion of the weight of the high-quality bean varieties in the raw material to the total weight, calculates the sum of the proportions of several weighing trays and takes the average, and uses this average as the content ratio A of the high-quality bean varieties in the raw material bean varieties; by comparing the content ratios A of different raw material bean varieties, the raw material bean variety with a higher content ratio A is determined to be a better bean variety.

[0071] In this embodiment, better bean seed raw materials are screened out from the perspective of bean seed raw materials, thereby providing growers with a better purchasing reference.

Claims

1. A bean planting screening device, characterized by: The invention comprises a controller, a workbench, a screening tray, a weighing sensor, a first negative pressure screening mechanism, a second negative pressure screening mechanism, a feeding box, and a shrunken bean seed screening mechanism. The rear end of the upper surface of the workbench is provided with a feeding box, and the front end is provided with a screening tray. The feeding box is connected to the screening tray through the shrunken bean seed screening mechanism. The first negative pressure screening mechanism and the second negative pressure screening mechanism are provided above the screening tray. The first negative pressure screening mechanism and the second negative pressure screening mechanism are fixedly connected and move back and forth along the upper end of the screening tray through a driving mechanism. The first negative pressure screening mechanism is used to screen out incomplete beans or residues with a particle size smaller than a preset standard or small and incompletely developed seeds. The second negative pressure screening mechanism is used to screen out seeds that meet the preset standard but are hollow. The controller is provided with a storage unit. The storage unit pre-stores the weight data of seeds of a set standard size of a single seed. The screening tray is provided with a weighing sensor. During the screening process, the weight of the seeds is used to determine whether they are qualified and high-quality bean seeds. The left and right ends of the upper surface of the workbench are respectively provided with mounting plates, and a guide rod and a lead screw are connected side by side between the tops of the two mounting plates. The two ends of the lead screw are rotatably connected to the corresponding mounting plates, one end of which passes through the outer surface of the mounting plate and is fixedly connected to the output shaft of the stepper motor preset on the outer surface of the mounting plate. The stepper motor constitutes the driving mechanism of the first negative pressure screening mechanism and the second negative pressure screening mechanism, and the two ends of the guide rod are fixedly connected to the corresponding mounting plates; Two movable plates are screwed side by side on the lead screw, the guide rod passes through the two movable plates and is slidably connected to the two movable plates, and a supporting plate is fixedly connected to the bottom ends of the two movable plates; A first visual sensor is provided at the left end of the lower surface of the support plate, and a second visual sensor is provided at the right end of the lower surface of the support plate. The first visual sensor and the second visual sensor are respectively connected to the controller signal through wires. The controller counts the number of beans in each weighing tray based on the image information of the first visual sensor and the second visual sensor.

2. The bean planting screening device according to claim 1, characterized in that: The feeding box is fixedly connected to the top of the workbench through a support frame, and an outer wall of the feeding box facing the screening plate is provided with a discharge port for only passing through a single layer of bean seeds, and the discharge port is provided with a sliding door, and both ends of the sliding door are slidably connected to the side wall of the feeding box through a linear slide groove, and a first cylinder is further provided on the side wall of the feeding box, and the fixed end of the first cylinder is fixedly connected to the side wall of the feeding box, and the telescopic end is connected to the upper end of the sliding door, and the opening and closing of the discharge port is controlled by the telescopic movement of the first cylinder, and a feeding port is provided at the top of the feeding box; The shrunken bean seed screening mechanism includes a discharge chute connected to the discharge port, the lower end of the discharge chute extends to one side of the screening plate and is used to feed the screening plate. The upper part of the outer surface of the discharge chute is a rough section and the lower part is a smooth section. The rough section is provided with anti-slip grooves. The rough section is used to intercept shrunken bean seeds and allow the bean seeds with smooth and plump surfaces to slide down. During the feeding process, the controller controls the first cylinder to act intermittently. Each time it acts, the sliding door is opened and an appropriate amount of seeds are released. The shrunken seeds are left in the rough section due to the large friction between them and the anti-slip grooves, and the smooth and plump seeds slide into the screening plate.

3. The bean planting screening device according to claim 2, characterized in that: The bottom end of the screening plate is fixedly connected with a base, the base is slidably connected to the upper surface of the workbench, and the screening plate is connected to the upper surface of the workbench through a shaking mechanism.

4. The bean planting screening device according to claim 3, characterized in that: The lower end of the base is slidably connected to the linear slide rail on the upper surface of the workbench, and a second cylinder is fixedly provided on the upper surface of the workbench. The fixed end of the second cylinder is fixedly connected to the upper surface of the workbench, and the telescopic end is fixedly connected to the end of the base. When the second cylinder repeatedly telescopes, the screening plate is shaken, and the bean seeds entering the screening plate are flattened.

5. The bean planting screening device according to claim 4, characterized in that: There are several grooves evenly distributed on the bottom of the screening plate, and weighing sensors are embedded in the bottom of the grooves. A weighing tray is also provided in the grooves. The outer wall of the weighing tray fits the gap with the side wall of the groove, and the top of the weighing tray is flush with the upper surface of the bottom of the screening plate. The weighing sensors are connected to the controller signal through wires.

6. The bean planting screening device according to claim 5, characterized in that: The first negative pressure screening mechanism includes a first recovery box fixedly arranged at the left end of the upper surface of the support plate, a first negative pressure suction mechanism arranged on the inner surface of the left movable plate, and a first negative pressure groove arranged on the left side of the lower surface of the support plate, the notch of the first negative pressure groove is provided with a first screen, the mesh size of the first screen is smaller than the size of the preset standard high-quality bean seeds, the top end of the first negative pressure groove is closed and is connected to the input end of the first negative pressure suction mechanism through a pipeline, the output end of the first negative pressure suction mechanism is connected to the first recovery box, the second negative pressure screening mechanism includes a second recovery box arranged at the right end of the upper surface of the support plate, a second negative pressure groove arranged on the right side of the lower surface of the support plate, and a second negative pressure suction mechanism arranged on the inner surface of the right movable plate, the output end of the second negative pressure suction mechanism is connected to the second recovery box, the input end of the second negative pressure suction mechanism is connected to the top end of the second negative pressure groove, the bottom open end of the second negative pressure groove is provided with a second screen, the mesh size of the second screen is consistent with the size of the preset standard high-quality bean seeds, and is used to pass through the hollow bean seeds; The first negative pressure suction mechanism is connected to the first negative pressure tank through a first connecting tube, and the second negative pressure suction mechanism is connected to the second negative pressure tank through a second connecting tube. Gas pressure sensors are respectively provided in the first connecting tube and the second connecting tube. The gas pressure sensors are connected to the controller signal through a wire. The controller controls the power of the first negative pressure suction mechanism and the second negative pressure suction mechanism to collect incomplete beans or residues with a particle size smaller than a preset standard, or small and incomplete seeds, and hollow bean seeds.

7. The method for using the bean planting screening device according to claim 6, characterized in that it comprises the following steps: (1) Feeding: The controller controls the intermittent action of the first cylinder. Each time it moves, the sliding door opens and releases an appropriate amount of seeds. The shrunken seeds are left behind by the rough section due to the large friction between them and the anti-slip grooves, while the smooth and plump seeds slide into the screening plate. The remaining seeds are removed manually using tools. (2) Flattening: The second cylinder repeatedly extends and contracts to shake the screening plate, flattening the seeds in the screening plate and shaking them into the weighing tray; (3) Collection of defective products: The stepper motor controls the support plate to move from one end of the screening plate to the other end. During the movement, the first negative pressure suction mechanism uses the negative pressure attraction to suck the incomplete beans or residues or small, underdeveloped seeds in each weighing tray with a particle size smaller than the preset standard into the first recycling box. Then the second negative pressure suction mechanism sucks the hollow seeds in each weighing tray into the second recycling box. During this process, the first visual sensor takes a picture of the seeds in each weighing tray before recycling, and the controller calculates the number A of beans in the weighing tray according to the set program. The second visual sensor takes a picture of the seeds in each weighing tray after recycling, and the controller calculates the number B of beans in the weighing tray according to the set program. (4) Confirmation and recovery of high-quality bean seeds: When the total weight of the seeds in a weighing tray divided by the number of beans matches the weight data of the seeds of the standard size set for a single seed in the storage unit, the bean seeds in the weighing tray are determined to be high-quality bean seeds; after the first negative pressure screening mechanism and the second negative pressure screening mechanism repeatedly move left and right for the set number of recovery times, the weighing tray that meets the high-quality bean seed standards is taken out, and the high-quality bean seeds are collected into the set container A, and the remaining seeds are collected into the container B. The seeds in the container B are used as the next level of bean seeds.

8. The method for using the bean planting screening device according to claim 7, characterized in that: The controller compares the number A of beans in the weighing tray detected by the first visual sensor with the number B of beans on the same weighing tray that have been fully recovered and have high-quality bean varieties left, calculates the proportion of the weight of the high-quality bean varieties in the raw material to the total weight, calculates the sum of the proportions of several weighing trays and takes the average, and uses this average as the content ratio A of the high-quality bean varieties in the raw material bean varieties; by comparing the content ratios A of different raw material bean varieties, the raw material bean variety with a higher content ratio A is determined to be a better bean variety.

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