Rape seed sowing device

Abstract

The utility model belongs to the technical field of seed metering, and discloses a rape seed metering device which comprises a seed metering assembly and a seed screening mechanism, and the seed metering assembly comprises a seed metering device main body for rape seed metering and a seed storage hopper fixed above the seed metering device main body; the seed screening mechanism comprises a seed screening box, a large-hole screen plate and a small-hole screen plate are arranged in the seed screening box, the large-hole screen plate and the small-hole screen plate are used for screening seeds and arranged in the vertical direction, and compared with the prior art, the oilseed rape seed screening device has the advantages that by designing the seed screening mechanism, oilseed rape seeds enter the seed screening box and fall on the large-hole screen plate. The vibration motor drives the large-hole screen plate and the small-hole screen plate to vibrate through the vibration transmission rod, and seeds roll on the inclined face of the large-hole screen plate. Seeds smaller than large-hole meshes fall onto a small-hole mesh plate, and abnormally-expanded seeds roll into a first material receiving box to be separated. On the small-hole screen plate, wizened seeds smaller than meshes of the small-hole screen plate fall to a bottom material sliding plate and slide into a second material receiving box. Normal seeds roll into the guide-in opening along the small-hole net plate and enter the seed storage hopper, and therefore rapid seed selection is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of seed metering technology, and specifically relates to a rapeseed seed metering device. Background Technology

[0002] Rapeseed, as an important oilseed crop in my country, has a profound impact on the agricultural economy due to the efficiency and scientific nature of its cultivation. In current rapeseed cultivation, the sowing process typically involves pouring bagged rapeseed seeds directly into a seed storage hopper, followed by seed metering using a rapeseed seed metering device. This method is simple to operate, quickly completes sowing preparation, and meets the basic requirements for sowing speed in large-scale planting.

[0003] However, rapeseed seeds vary in size and shape. Some abnormal seeds, such as shriveled seeds, lack sufficient nutrients to provide adequate nourishment for seedling growth after sowing. Even if they germinate, they are prone to dying in the early stages of growth due to lack of energy. Enlarged seeds, on the other hand, may be due to developmental abnormalities or pest / disease infestation. These seeds also struggle to maintain normal growth and fail to develop into robust rapeseed plants. Lacking an effective screening mechanism, these abnormal seeds are difficult to remove when poured into the seed storage container and thus enter the sowing process. This not only results in abnormal seeds occupying sowing positions, limiting the growth space for normal seeds and affecting sowing density and uniformity, but also leads to a waste of planting resources.

[0004] In view of this, this application proposes a rapeseed seed metering device to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a rapeseed seed metering device. By designing the seed metering components, it can quickly sift out swollen and shriveled seeds mixed with normal rapeseed seeds, thereby achieving seed selection and making full preparations for subsequent seed metering operations through the main body of the seed metering device, ensuring sowing quality, and solving the problems mentioned in the background technology.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution:

[0007] A rapeseed seed metering device includes: a seed metering mechanism, comprising a seed metering component and a seed storage component. The seed metering component includes a seed metering body for rapeseed seed metering and a seed storage hopper fixed above the seed metering body. The seed storage component includes a seed pre-storage cavity, in which a guide screw for feeding seeds is provided. A seed screening mechanism includes a seed screening box, in which a large-hole mesh plate and a small-hole mesh plate are provided for screening seeds arranged in a vertical direction. The large-hole mesh plate is inclined downward from left to right, and the small-hole mesh plate is inclined from right to left. A vibration rod connects the large-hole mesh plate and the small-hole mesh plate, and a vibration motor is installed on the lower surface of the small-hole mesh plate.

[0008] In a preferred embodiment, both the large-hole mesh plate and the small-hole mesh plate have several sets of mesh holes on their surfaces, and the diameter of the mesh holes in the large-hole mesh plate is larger than the diameter of the mesh holes in the small-hole mesh plate.

[0009] In a preferred embodiment, a bottom sliding plate is installed at an angle below the inside of the seed screening box. Both the bottom sliding plate and the large-hole mesh plate extend out of the seed screening box at one end, and the bottom sliding plate and the large-hole mesh plate have the same inclination angle.

[0010] In a preferred embodiment, a No. 1 receiving box is provided below one end of the large-hole mesh plate, and a No. 2 receiving box is provided below one end of the bottom sliding plate. Both the No. 1 and No. 2 receiving boxes are fixedly connected to the seed screening box.

[0011] In a preferred embodiment, an inlet is provided at the bottom of the inside of the seed screening box. The inlet is located below the lowest end of the perforated mesh plate and is connected to the seed storage hopper.

[0012] In a preferred embodiment, the lower end of the vibration rod is fixedly connected to the vibration motor, and a set of springs is installed around the lower surface of the large-hole mesh plate and the small-hole mesh plate respectively. A first support plate is installed on the upper side of one side of the inside of the seed screening box, and a second support plate is installed on the lower side of the other side of the inside of the seed screening box. The springs under the large-hole mesh plate are fixedly connected to the first support plate and the small-hole mesh plate respectively, and the springs under the small-hole mesh plate are fixedly connected to the second support plate and the bottom sliding plate respectively.

[0013] In a preferred embodiment, the seed pre-storage chamber is located above the seed screening box, and a feeding chamber is provided on one side of the seed pre-storage chamber. The feeding chamber and the seed pre-storage chamber are separated by a partition, and the partition is fixedly connected to the seed screening box.

[0014] In a preferred embodiment, a central shaft is installed at the center of the guiding screw, and one end of the central shaft and one end of the guiding screw both extend through the partition into the feeding chamber. A feeding motor is installed above one side of the seed screening box, and the output shaft of the feeding motor is fixedly connected to the central shaft. The feeding chamber is in communication with the inside of the seed screening box.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are:

[0016] 1. By designing a seed storage component, a dedicated seed pre-storage chamber is provided. Before actual operation, a large number of rapeseed seeds can be properly stored in this pre-storage chamber, avoiding the chaos and loss caused by random seed placement. When entering the seed selection stage, as the guide screw rotates, it generates a spiral propulsion force. This force allows the rapeseed seeds in the seed pre-storage chamber to enter the feeding chamber in an orderly manner along the spiral trajectory, and then enter the seed screening box from the feeding chamber.

[0017] 2. Through the design of the seed screening mechanism, rapeseed seeds enter the seed screening box and fall onto the large-hole screen plate. A vibrating motor drives the large-hole and small-hole screen plates to vibrate via a vibration rod, causing the seeds to roll on the inclined surface of the large-hole screen plate. Seeds smaller than the large-hole mesh fall onto the small-hole screen plate, while abnormally swollen seeds roll into the first receiving box and are separated. On the small-hole screen plate, shriveled seeds smaller than their mesh size fall to the bottom sliding plate and slide into the second receiving box. Normal seeds roll along the small-hole screen plate into the inlet and into the seed storage hopper, where they are fed by the seed metering device for seed selection. This process ensures adequate preparation for subsequent seed metering operations through the main body of the seed metering device, guaranteeing sowing quality. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of a rapeseed seed metering device according to the present invention.

[0020] Figure 2 This is a structural schematic diagram of a rapeseed seed metering device according to this utility model from another perspective.

[0021] Figure 3 This is a top-view structural diagram of a rapeseed seed metering device according to this utility model.

[0022] Figure 4 This is a schematic diagram of the internal structure of the seed screening box in a rapeseed seed metering device according to this utility model.

[0023] Figure 5 This is a front view of the internal structure of the seed screening box in a rapeseed seed metering device according to this utility model.

[0024] In the diagram, 1. Seed metering device body; 2. Seed storage hopper; 3. Seed sieving mechanism; 31. Seed sieving box; 32. Large-hole mesh plate; 33. Small-hole mesh plate; 34. Spring; 35. Bottom sliding plate; 36. No. 1 receiving box; 37. No. 2 receiving box; 38. First support plate; 39. Second support plate; 310. Inlet; 311. Vibration motor; 312. Vibration transmission rod; 4. Seed storage assembly; 41. Seed pre-storage chamber; 42. Feeding motor; 43. Central shaft; 44. Guide screw; 45. Partition plate; 46. Feeding chamber. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1 to 5 A rapeseed seed metering device includes: a seed metering mechanism, comprising a seed metering component and a seed storage component 4. The seed metering component includes a seed metering body 1 for rapeseed seed metering and a seed storage hopper 2 fixed above the seed metering body 1. The seed storage component 4 includes a seed pre-storage cavity 41, in which a guide screw 44 for feeding seeds is provided; and a seed screening mechanism 3, comprising a seed screening box 31, in which a large-hole mesh plate 32 and a small-hole mesh plate 33 are provided for screening seeds arranged in the vertical direction. The large-hole mesh plate 32 is inclined from left to right downwards, and the small-hole mesh plate 33 is inclined from right to left. A vibration rod 312 is provided between the large-hole mesh plate 32 and the small-hole mesh plate 33, and a vibration motor 311 is installed on the lower surface of the small-hole mesh plate 33.

[0027] Both the large-hole mesh plate 32 and the small-hole mesh plate 33 have several sets of mesh holes on their surfaces, and the diameter of the mesh holes in the large-hole mesh plate 32 is larger than the diameter of the mesh holes in the small-hole mesh plate 33.

[0028] A bottom sliding plate 35 is installed at an angle inside the seed screening box 31. Both the bottom sliding plate 35 and the large-hole mesh plate 32 extend out of the seed screening box 31, and the bottom sliding plate 35 and the large-hole mesh plate 32 have the same tilt angle.

[0029] A first receiving box 36 is provided below one end of the large-hole mesh plate 32, and a second receiving box 37 is provided below one end of the bottom sliding plate 35. Both the first receiving box 36 and the second receiving box 37 are fixedly connected to the seed screening box 31.

[0030] The rapeseed seeds that fall on the bottom sliding plate 35 can slide down the bottom sliding plate 35 into the second receiving box 37.

[0031] The seed screening box 31 has an inlet 310 at the bottom inside. The inlet 310 is located below the lowest end of the perforated mesh plate 33 and is connected to the seed storage hopper 2.

[0032] The lower end of the vibration rod 312 is fixedly connected to the vibration motor 311. A set of springs 34 are installed around the lower surface of the large-hole mesh plate 32 and the small-hole mesh plate 33 respectively. A first support plate 38 is installed on the upper side of one side of the inside of the seed screening box 31, and a second support plate 39 is installed on the lower side of the other side of the inside of the seed screening box 31. The springs 34 below the large-hole mesh plate 32 are fixedly connected to the first support plate 38 and the small-hole mesh plate 33 respectively. The springs 34 below the small-hole mesh plate 33 are fixedly connected to the second support plate 39 and the bottom sliding plate 35 respectively.

[0033] The first support plate 38 and the second support plate 39 can support the spring 34.

[0034] The seed pre-storage chamber 41 is located above the seed screening box 31. A feeding chamber 46 is provided on one side of the seed pre-storage chamber 41. The feeding chamber 46 and the seed pre-storage chamber 41 are separated by a partition 45, which is fixedly connected to the seed screening box 31.

[0035] A central shaft 43 is installed at the center of the guiding screw 44. One end of the central shaft 43 and one end of the guiding screw 44 both pass through the partition 45 and extend into the feeding chamber 46. A feeding motor 42 is installed above one side of the seed screening box 31. The output shaft of the feeding motor 42 is fixedly connected to the central shaft 43. The feeding chamber 46 is connected to the inside of the seed screening box 31.

[0036] In practical use, the working principle of this utility model is as follows:

[0037] Before sowing rapeseed, bagged rapeseed seeds are poured into the seed pre-storage chamber 41. Before starting the seed dispensing operation, the feeding motor 42 is started, driving the central shaft 43 to rotate, which in turn drives the guide screw 44 to rotate synchronously. Under the push of the guide screw 44, the rapeseed seeds in the seed pre-storage chamber 41 are guided into the feeding chamber 46, and then fall onto the surface of the large-hole screen plate through the feeding chamber 46. At this time, the vibration motor 311 starts to work, transmitting the steady vibration force to the large-hole screen plate 32 and the small-hole screen plate 33 through the vibration rod 312, causing both to vibrate. Under the action of vibration, the seeds generate dynamic displacement on the large-hole screen plate 32, continuously rolling along the inclined surface of the large-hole screen plate 32, and the initial screening begins. Seeds smaller than the mesh size of the large-hole mesh 32 pass through the large-hole mesh 32 under the combined action of vibration and gravity, falling onto the small-hole mesh 33 below. Abnormally swollen seeds, being larger than the mesh size of the large-hole mesh 32, cannot pass through and instead roll along the inclined surface of the large-hole mesh 32, eventually falling into the first receiving box 36, achieving effective separation. Seeds falling onto the small-hole mesh 33 continue to roll along its inclined surface for secondary screening. Shriveled seeds smaller than the mesh size of the small-hole mesh 33, due to size differences, pass through the mesh size of the small-hole mesh 33 and fall onto the bottom sliding plate 35 below, sliding down to the second receiving box 37. After two rounds of screening, normal-sized, plump, and healthy seeds roll along the inclined surface of the small-hole mesh 33 to the inlet 310, and then enter the seed storage hopper 2, preparing for subsequent seed dispensing operations in the seed metering device body 1.

[0038] When the large-hole screen plate 32 and the small-hole screen plate 33 vibrate, the vibration force is transmitted to the spring 34 connected to them. The spring 34 has good elastic deformation capability, which can not only effectively buffer the vibration and reduce the impact of the vibration on the overall structure of the seed screening box 31, but also enhance the vibration effect of the large-hole screen plate 32 and the small-hole screen plate 33 through its own elastic energy storage and release, thereby improving the screening efficiency.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rapeseed seed metering device, characterized in that, include: The seed metering mechanism includes a seed metering component and a seed storage component (4). The seed metering component includes a seed metering device body (1) for rapeseed seed metering and a seed storage hopper (2) fixed above the seed metering device body (1). The seed storage component (4) includes a seed pre-storage cavity (41) and a guide screw (44) for seed feeding is provided in the seed pre-storage cavity (41). The seed screening mechanism (3) includes a seed screening box (31). The seed screening box (31) is provided with a large-hole mesh plate (32) and a small-hole mesh plate (33) for screening seeds in the vertical direction. The large-hole mesh plate (32) is inclined from left to right and the small-hole mesh plate (33) is inclined from right to left. The large-hole mesh plate (32) and the small-hole mesh plate (33) are connected by a vibration rod (312), and a vibration motor (311) is installed on the lower surface of the small-hole mesh plate (33).

2. The rapeseed seed metering device as described in claim 1, characterized in that: Both the large-hole mesh plate (32) and the small-hole mesh plate (33) have several sets of mesh holes on their surfaces, and the diameter of the mesh holes in the large-hole mesh plate (32) is larger than the diameter of the mesh holes in the small-hole mesh plate (33).

3. The rapeseed seed metering device as described in claim 2, characterized in that: The bottom sliding plate (35) is installed at an angle inside the seed screening box (31). One end of the bottom sliding plate (35) and the large-hole mesh plate (32) both extend out of the seed screening box (31), and the bottom sliding plate (35) and the large-hole mesh plate (32) have the same tilt angle.

4. The rapeseed seed metering device as described in claim 3, characterized in that: The large-hole mesh plate (32) has a first receiving box (36) below one end, and the bottom sliding plate (35) has a second receiving box (37) below one end. Both the first receiving box (36) and the second receiving box (37) are fixedly connected to the seed screening box (31).

5. A rapeseed seed metering device as described in claim 4, characterized in that: The seed screening box (31) has an inlet (310) at the bottom inside. The inlet (310) is located below the lowest end of the perforated mesh plate (33) and is connected to the seed storage hopper (2).

6. A rapeseed seed metering device as described in claim 1, characterized in that: The lower end of the vibration rod (312) is fixedly connected to the vibration motor (311). A set of springs (34) are installed around the lower surface of the large-hole mesh plate (32) and the small-hole mesh plate (33). A first support plate (38) is installed on the upper side of one side of the inside of the seed sieve box (31), and a second support plate (39) is installed on the lower side of the other side of the inside of the seed sieve box (31). The springs (34) below the large-hole mesh plate (32) are fixedly connected to the first support plate (38) and the small-hole mesh plate (33) respectively. The springs (34) below the small-hole mesh plate (33) are fixedly connected to the second support plate (39) and the bottom sliding plate (35) respectively.

7. A rapeseed seed metering device as described in claim 6, characterized in that: The seed pre-storage chamber (41) is located above the seed screening box (31). A feeding chamber (46) is provided on one side of the seed pre-storage chamber (41). The feeding chamber (46) and the seed pre-storage chamber (41) are separated by a partition (45). The partition (45) is fixedly connected to the seed screening box (31).

8. A rapeseed seed metering device as described in claim 7, characterized in that: A central shaft (43) is installed at the center of the guiding spiral (44). One end of the central shaft (43) and one end of the guiding spiral (44) both extend through the partition (45) into the feeding chamber (46). A feeding motor (42) is installed above one side of the seed sieve box (31). The output shaft of the feeding motor (42) is fixedly connected to the central shaft (43). The feeding chamber (46) is connected to the inside of the seed sieve box (31).

Images