A crop seed sorting and specific gravity screening device
By designing a filtration and sieving structure and using a drive motor and servo motor to rotate gears and eccentric discs, the problem of low screening accuracy in existing devices has been solved, achieving efficient and accurate seed sorting and environmental improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 克什克腾旗农牧局
- Filing Date
- 2025-07-19
- Publication Date
- 2026-06-26
AI Technical Summary
Existing crop seed sorting and gravity screening devices have low screening accuracy and are difficult to effectively separate seeds with different specific gravities, resulting in a large number of impurities or unqualified seeds mixed in after screening.
A specific gravity sorting device for crop seeds was designed. By setting up a filtration structure and a sieving structure, the drive motor and servo motor drive the gears and eccentric disk to rotate, thereby realizing the stirring and sieving of seeds. Combined with a fan to collect dust, the screening accuracy and efficiency are improved.
It improves seed screening accuracy, reduces the mixing of impurities and substandard seeds, improves the working environment, and enhances the stability and efficiency of seed sorting.
Smart Images
Figure CN224405341U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crop seed processing equipment, and in particular to a crop seed sorting and gravity screening device. Background Technology
[0002] Crop seeds refer to the reproductive bodies of crops, including various plant seeds used in agricultural production, such as grain crop seeds (wheat, corn, rice, soybeans, etc.), cash crop seeds (cotton, rapeseed, peanuts, etc.), vegetable seeds (cabbage, radish, tomato, etc.), fruit seeds (watermelon, apple, pear, etc.), and forage seeds. They can germinate and grow into new plants under suitable environmental conditions and are the basic materials for crop propagation and agricultural production. In the process of crop cultivation, the quality of seeds directly affects the growth and yield of crops. Therefore, sorting and screening crop seeds to remove impurities and unqualified seeds is an important step in ensuring seed quality.
[0003] Currently, there are many types of existing crop seed sorting and screening devices, among which gravity sorting devices are commonly used. However, existing gravity sorting devices have some shortcomings in use. Some devices have low screening accuracy and are difficult to effectively separate seeds with different specific gravities, resulting in a lot of impurities or unqualified seeds still mixed in the sorted seeds. Therefore, a crop seed sorting gravity sorting device is developed to solve the above problems. Utility Model Content
[0004] To address the shortcomings of existing technologies, this invention provides a crop seed sorting and gravity screening device, which solves the problems mentioned in the background section.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a crop seed sorting and gravity screening device, including a screening box, a PLC controller is fixedly installed on the front side of the outer wall of the screening box, and a feed inlet is opened at the upper end of the screening box;
[0006] The screening box is equipped with a filtration structure, which includes a screening filter cylinder fixedly installed inside the screening box. The inner wall of the screening filter cylinder is fitted with four actuating plates, and the outer walls of the four actuating plates are fixedly installed on the mounting plate. A stirring rod is fixedly installed in the middle of the mounting plate, and a guide plate is fixedly installed at the bottom of the screening box.
[0007] The guide plate is located at one end in front of the screening box and has a screening structure. The screening structure includes a screening box, which is located in front of the screening box. The screening box has a screening bed inside and two sets of guide pulleys are symmetrically connected to the outer wall of the screening bed. An eccentric plate is located on the outside of the screening box and a limit plate is located above the eccentric plate. One end of the limit plate is located on the screening bed.
[0008] As a further technical solution of this utility model, a support plate is fixedly provided on the outer wall of the screening box and a drive motor is fixedly installed below the support plate. The output end of the drive motor is fixedly connected to a drive gear, and a side gear is meshed with the outer wall of the drive gear.
[0009] As a further technical solution of this utility model, the driving gear and the side gear are rotatably installed inside the limiting box, the limiting box is installed on the support plate, one end of the stirring rod is rotatably installed on the inner wall of the screening box, and the extended end is fixedly connected to the side gear. Two guide plates are fixedly provided on the upper end of the screening filter cylinder, and the position of the guide plates is adapted to the feed inlet.
[0010] As a further technical solution of this utility model, a maintenance cabinet is rotatably installed on one side of the outer wall of the screening box, and a collection box is slidably connected to the bottom of the screening box below the guide plate, with the collection box being adapted to the position of the guide plate.
[0011] As a further technical solution of this utility model, positioning buckles are fixedly installed on both sides of the bottom outer wall of the screening box, and an exhaust fan is fixedly installed on the outer wall of the positioning buckle. The output end of the exhaust fan is fixedly connected to a duct. One end of each of the two ducts passes through the inside of the screening box, and the extended end is fixedly connected to a dust suction nozzle. The two sets of dust suction nozzles are positioned relative to the guide plate.
[0012] As a further technical solution of this utility model, a mounting frame is fixedly installed on the outer wall of the screening box and a servo motor is fixedly installed inside the mounting frame. One end of the servo motor is fixedly connected to the bottom of the eccentric disk. A positioning shaft is fixedly connected to the upper end of the eccentric disk away from the center point, and a limit plate is rotatably connected to the outer wall of the positioning shaft. The other end of the limit plate is rotatably installed on one end of the screening bed.
[0013] As a further technical solution of this utility model, the two sets of guide pulleys are positioned relative to the guide groove, and a receiving box is provided inside the screening box. Guide sliders are fixedly installed on both sides of the outer wall of the receiving box and the guide sliders are slidably connected inside the screening box.
[0014] This utility model provides a specific gravity screening device for sorting crop seeds, which has the following advantages compared with the prior art:
[0015] 1. This design discloses a specific gravity screening device for crop seeds. By setting up a filter structure, a drive motor drives the active gear to mesh with the side gear, causing the side gear to drive the mounting plate on the stirring rod to rotate stably. The mounting plate drives four agitator plates to rotate along the screening and filtering cylinder, agitating and turning the seeds. Suitable seeds fall through the filter holes to the bottom, while other impurities and stone particles mixed in with the seeds are intercepted. This provides preliminary screening and filtration of the seeds, thereby improving the subsequent seed screening accuracy and avoiding problems such as increased sorting difficulty caused by other impurities and unqualified seeds, thus improving the stability of seed sorting.
[0016] 2. This design provides a crop seed sorting and gravity screening device. The guide plate facilitates preliminary gravity sorting of seeds. The screening structure, driven by a servo motor on the mounting frame, rotates an eccentric disc, causing the eccentric disc to rotate a limiting plate on the positioning shaft. This, in turn, causes the screening bed at one end of the limiting plate to reciprocate within the screening box. The screening bed utilizes two sets of guide pulleys for reciprocating screening, thus achieving thorough gravity sorting of the seeds and improving the efficiency of seed sorting.
[0017] 3. The crop seed sorting and gravity screening device designed in this paper, by setting up an exhaust fan, forms a relatively closed working space in the box. With the help of the duct and dust suction nozzle, it can effectively collect dust and light impurities, reduce dust emission, and improve the working environment. Attached Figure Description
[0018] Figure 1 A schematic diagram of the overall structure of a crop seed sorting and gravity screening device;
[0019] Figure 2 A schematic diagram of a partial cross-sectional structure of the rear side of a crop seed sorting and gravity screening device;
[0020] Figure 3 A schematic diagram of the internal disassembly structure of a crop seed sorting gravity screening device;
[0021] Figure 4 for Figure 2 A partial enlarged diagram of the split structure;
[0022] Figure 5 for Figure 4 A magnified diagram of the partially disassembled structure.
[0023] In the diagram: 1. Screening box; 2. PLC controller; 3. Feed inlet; 4. Filtering structure; 41. Drive motor; 42. Drive gear; 43. Side gear; 44. Limit box; 45. Stirring rod; 46. Mounting plate; 47. Actuating plate; 48. Screening filter cylinder; 49. Guide plate; 5. Material guide plate; 6. Exhaust fan; 61. Positioning buckle; 62. Dust suction nozzle; 7. Screening structure; 71. Screening box; 72. Collection box; 73. Guide slider; 74. Screening bed; 741. Guide pulley; 742. Guide groove; 75. Mounting frame; 76. Servo motor; 77. Eccentric plate; 78. Positioning shaft; 79. Limit plate; 8. Inspection cabinet; 9. Collection box. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1-5 This utility model provides a technical solution for a crop seed sorting and gravity screening device: including a screening box 1, a PLC controller 2 fixedly installed on the front side of the outer wall of the screening box 1, and a feed inlet 3 opened at the upper end of the screening box 1;
[0026] The screening box 1 is equipped with a filter structure 4. The filter structure 4 includes a screening filter cylinder 48 fixedly installed inside the screening box 1. The inner wall of the screening filter cylinder 48 is rotatably fitted with four actuating plates 47, and the outer walls of the four actuating plates 47 are all fixedly installed on the mounting plate 46. A stirring rod 45 is fixedly installed in the middle of the mounting plate 46. A guide plate 5 is fixedly installed at the bottom of the screening box 1.
[0027] A screening structure 7 is provided at one end of the guide plate 5 on the front side of the screening box 1. The screening structure 7 includes a screening box 71, which is located on the front side of the screening box 1. A screening bed 74 is provided inside the screening box 71, and two sets of guide pulleys 741 are symmetrically connected to the outer wall of the screening bed 74. An eccentric disc 77 is provided on the outside of the screening box 71, and a limit plate 79 is provided above the eccentric disc 77. One end of the limit plate 79 is located on the screening bed 74.
[0028] like Figures 1 to 3As shown, a support plate is fixedly installed on the outer wall of the screening box 1, and a drive motor 41 is fixedly installed below the support plate. The output end of the drive motor 41 is fixedly connected to a drive gear 42, and a side gear 43 is meshed with the outer wall of the drive gear 42. Both the drive gear 42 and the side gear 43 are rotatably mounted inside a limiting box 44, which is mounted on the support plate. By setting the limiting box 44, the drive gear 42 and the side gear 43 can be effectively limited, thereby stably driving the actuating plate 47 on the stirring rod 45 to rotate stably and stir. One end of the rod 45 is rotatably mounted on the inner wall of the screening box 1, and the extended end is fixedly connected to the side gear 43. Two guide plates 49 are fixedly installed on the upper end of the screening filter cylinder 48, and the position of the guide plates 49 is adapted to the feed inlet 3. The setting of the guide plates 49 facilitates the effective guidance of the seeds poured in from the feed inlet 3, and avoids the seeds falling to other positions and making them difficult to screen. A maintenance cabinet 8 is rotatably mounted on one side of the outer wall of the screening box 1. A collection box 9 is slidably connected to the bottom of the screening box 1 below the guide plate 5. The position of the collection box 9 is adapted to the guide plate 5.
[0029] like Figure 3 As shown, positioning buckles 61 are fixedly installed on both sides of the bottom outer wall of the screening box 1, and an exhaust fan 6 is fixedly installed on the outer wall of the positioning buckles 61. The output end of the exhaust fan 6 is fixedly connected to a duct. One end of each duct passes through the interior of the screening box 1, and the extended end is fixedly connected to a dust suction nozzle 62. The two sets of dust suction nozzles 62 are positioned opposite to the guide plate 5. The screening box 1 forms a relatively closed working space. With the dust removal exhaust fan 6, dust and light impurities can be effectively collected, dust emissions can be reduced, and the working environment can be improved. The exhaust fan 6, drive motor 41 and servo motor 76 are all electrically connected to the PLC controller 2. The existing technology is mature and widely used.
[0030] like Figures 4 to 5 As shown, a mounting bracket 75 is fixedly installed on the outer wall of the screening box 71, and a servo motor 76 is fixedly installed inside the mounting bracket 75. One end of the servo motor 76 is fixedly connected to the bottom of the eccentric disk 77. A positioning shaft 78 is fixedly connected to the upper end of the eccentric disk 77 away from the center point, and a limit plate 79 is rotatably connected to the outer wall of the positioning shaft 78, so that when the positioning shaft 78 on the eccentric disk 77 drives the limit plate 79 to rotate, it rotates around the eccentric disk 77 as the center. The other end of the limit plate 79 is rotatably installed on the screening bed 74. At the end, two sets of guide pulleys 741 are positioned relative to the guide groove 742, so that when the limiting plate 79 drives the screening bed 74 to move back and forth, the guide pulleys 741 can rotate relative to each other in the guide groove 742, thereby improving the stability of the reciprocating movement of the screening bed 74. The screening box 71 is equipped with a receiving box 72 inside, and guide sliders 73 are fixedly installed on both sides of the outer wall of the receiving box 72 and are slidably connected inside the screening box 71, which facilitates the further collection and packaging of the sieved seeds.
[0031] The working principle of this utility model is as follows: The crop seeds to be screened are poured into the feed inlet 3 and fall into the screening and filtering cylinder 48. At this time, the external power supply is turned on, and the drive motor 41 drives the active gear 42 to mesh with the side gear 43 to rotate. This causes the side gear 43 to drive the mounting plate 46 on the stirring rod 45 to rotate stably. The mounting plate 46 drives the four actuating plates 47 to rotate along the screening and filtering cylinder 48, agitating and turning the seeds. Suitable seeds fall through the filter holes to the bottom, while other impurities and stone particles mixed in with the seeds are intercepted, thus performing preliminary screening and filtering. Finally, the impurities are cleaned through the inspection cabinet 8. The seeds falling to the bottom first pass through the guide plate 5, and at the same time, the PLC controller 2 starts two exhaust fans 6. The exhaust fans 6 use ducts to draw dust from multiple suction nozzles 6. 2. Dust and fine impurities mixed in with the seeds that fall onto the guide plate 5 are adsorbed. Under the action of the airflow from the fan, the heavier seeds that match the diameter of the filter holes in the guide plate 5 fall into the collection box 9 below for further screening. Then, the smaller and lighter seeds are conveyed along the guide plate 5 into the screening bed 74. At this time, the servo motor 76 on the drive mounting frame 75 drives the eccentric disk 77 to rotate, causing the eccentric disk 77 to drive the limiting plate 79 on the positioning shaft 78 to rotate in a circle. This causes the screening bed 74 at one end of the limiting plate 79 to move back and forth in the screening box 71. The screening bed 74 uses two sets of guide pulleys 741 to move back and forth for screening. The screened seeds are further screened by specific gravity and collected by the collection box 72 at the bottom. Finally, they are packaged together to facilitate the full screening of specific gravity of the seeds.
[0032] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.
Claims
1. A specific gravity sorting device for crop seeds, characterized in that, Includes a screening box (1), a PLC controller (2) is fixedly installed on the front side of the outer wall of the screening box (1), and a feed inlet (3) is opened at the upper end of the screening box (1); The screening box (1) is provided with a filter structure (4) inside. The filter structure (4) includes a screening filter cylinder (48) fixedly installed inside the screening box (1). The inner wall of the screening filter cylinder (48) is rotatably fitted with four actuating plates (47), and the outer walls of the four actuating plates (47) are fixedly installed on the mounting plate (46). A stirring rod (45) is fixedly installed in the middle of the mounting plate (46). A guide plate (5) is fixedly installed at the bottom of the screening box (1). The guide plate (5) is located at one end in front of the screening box (1) and is provided with a screening structure (7). The screening structure (7) includes a screening box (71). The screening box (71) is located in front of the screening box (1). The screening box (71) is provided with a screening bed (74) inside and two sets of guide pulleys (741) are symmetrically connected to the outer wall of the screening bed (74). An eccentric disk (77) is provided on the outside of the screening box (71) and a limiting plate (79) is provided above the eccentric disk (77). One end of the limiting plate (79) is located on the screening bed (74).
2. The crop seed sorting and gravity screening device according to claim 1, characterized in that, The outer wall of the screening box (1) is fixedly provided with a support plate and a drive motor (41) is fixedly installed below the support plate. The output end of the drive motor (41) is fixedly connected to a drive gear (42), and a side gear (43) is meshed with the outer wall of the drive gear (42).
3. The crop seed sorting and gravity screening device according to claim 2, characterized in that, The drive gear (42) and the side gear (43) are both rotatably mounted inside the limiting box (44), which is mounted on the support plate. One end of the stirring rod (45) is rotatably mounted on the inner wall of the screening box (1), and its extension end is fixedly connected to the side gear (43). Two guide plates (49) are fixedly provided on the upper end of the screening filter cylinder (48), and the position of the guide plates (49) is adapted to the feed inlet (3).
4. The crop seed sorting and gravity screening device according to claim 3, characterized in that, A maintenance cabinet (8) is rotatably installed on one side of the outer wall of the screening box (1). A collection box (9) is slidably connected to the bottom of the screening box (1) below the guide plate (5). The collection box (9) is adapted to the position of the guide plate (5).
5. The crop seed sorting and gravity screening device according to claim 1, characterized in that, The bottom outer wall of the screening box (1) is fixedly provided with positioning buckles (61) on both sides, and the outer wall of the positioning buckles (61) is fixedly provided with a fan (6). The output end of the fan (6) is fixedly connected with a duct. One end of the two ducts passes through the inside of the screening box (1) and the extended end is fixedly connected with a dust suction nozzle (62). The two sets of dust suction nozzles (62) are positioned opposite to the guide plate (5).
6. The crop seed sorting and gravity screening device according to claim 1, characterized in that, The outer wall of the screening box (71) is fixedly installed with a mounting frame (75) and a servo motor (76) is fixedly installed inside the mounting frame (75). One end of the servo motor (76) is fixedly connected to the bottom of the eccentric disk (77). The upper end of the eccentric disk (77) is fixedly connected to a positioning shaft (78) away from the center point, and a limit plate (79) is rotatably connected to the outer wall of the positioning shaft (78). The other end of the limit plate (79) is rotatably installed on one end of the screening bed (74).
7. The crop seed sorting and gravity screening device according to claim 6, characterized in that, The two sets of guide pulleys (741) and guide grooves (742) are positioned opposite each other. A receiving box (72) is provided inside the screening box (71). Guide sliders (73) are fixedly installed on both sides of the outer wall of the receiving box (72) and the guide sliders (73) are slidably connected inside the screening box (71).