Nursery stock seed screening device

Abstract

The utility model relates to the technical field of seed screening, and discloses a seedling seed screening device which comprises a support, a discharging hopper is arranged on the support, the discharging end of the discharging hopper is communicated with a screening device, the screening device is connected with the support through a connecting piece, a driving device is fixedly installed on the support, and the driving device is connected with the discharging hopper. A dust removal assembly and a reciprocating assembly are arranged at the output end of the driving device, the dust removal assembly is used for removing dust in the seeds, the reciprocating assembly is used for driving the screening device to continuously vibrate, and the screening device is provided with a double-layer screen, so that the seeds can be screened according to sizes, and meanwhile fine sand in the seeds is further removed; and a driving device is further arranged, the driving device drives the dust removal assembly and the reciprocating assembly at the same time, automatic operation of dust removal and vibration screening of the seeds is achieved, the screening efficiency is greatly improved, manual intervention is reduced, and the practicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of seed screening, in particular to a seed screening device for nursery stock seeds. Background Technique

[0002] Nursery stock generally refers to small trees that have germinated and started to grow, usually grown from seeds. Seeds are the reproductive units of trees, containing the embryo and stored nutrients required for the development of nursery stock. Once the seeds are provided with appropriate environmental conditions (such as moisture, temperature, and light), the seeds will germinate, and from this point on, they become nursery stock. Therefore, the quality of seeds directly affects the survival rate and growth health of nursery stock. Screening seeds helps to evaluate the growth potential and biological characteristics of seeds and preliminarily judge their germination rate and growth potential.

[0003] Common seed screening usually distinguishes according to the appearance, size, color, and integrity of seeds. Existing seed screening usually uses a bamboo winnowing basket to turn the seeds back and forth. Therefore, it is overly dependent on visual inspection and work experience, resulting in low efficiency. During the screening process, the lighter seeds fall from the opening of the winnowing basket, and the remaining seeds and fine sand and gravel will stay in the winnowing basket. Therefore, an additional screening step is required, and the practicability is poor. Therefore, a seed screening device for nursery stock seeds is proposed to solve the above-mentioned problems. Content of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a seed screening device for nursery stock seeds, including a bracket. A feeding hopper is arranged on the bracket. The discharging end of the feeding hopper is communicated with a screening device, and the screening device is connected to the bracket through a connecting member. A driving device is fixedly installed on the bracket. The output end of the driving device is respectively provided with a dust removal component and a reciprocating component. The dust removal component is used to remove dust in the seeds, and the reciprocating component is used to drive the screening device to vibrate continuously.

[0005] Further, the screening device includes a frame body, which is inclined and located below the feeding hopper. One side of the frame body is open, and a drainage plate is welded at the opening. A first screen is arranged in the frame body. One side of the first screen is provided with a discharge chute, and the discharge chute is at the same horizontal height as the first screen. A blanking hole is opened on the bottom surface of the frame body, and a second screen located below the first screen is arranged in the blanking hole.

[0006] Further, the mesh number of the first screen is smaller than that of the second screen.

[0007] Further, the connecting member includes a mounting seat fixedly installed on the bracket. A connecting arm is rotatably connected to the mounting seat. A fixing seat is fixedly installed on one side surface of the frame body. One end of the connecting arm away from the mounting seat is rotatably connected to the fixing seat.

[0008] Furthermore, the dust removal assembly includes a shell, which is fixedly mounted on the bracket, and an air outlet channel is opened on the side of the shell close to the screening device. The inner side of the shell is rotatably connected to a rotating shaft, and a plurality of blades equidistantly distributed in a ring shape are welded on the rotating shaft.

[0009] Furthermore, the reciprocating assembly includes a crankshaft, which is rotatably connected to the bracket through a bearing seat, a connecting rod is rotatably connected to the crankshaft, an articulated seat is fixedly installed on the frame, and one end of the connecting rod away from the crankshaft is hinged to the articulated seat.

[0010] Furthermore, the output end of the driving device is connected to the rotating shaft and the crankshaft through a pulley transmission mechanism.

[0011] The beneficial effects of the utility model are as follows: the screening device adopts a double-layer screen setting, which can screen the seeds by size and further remove the fine sand and gravel in the seeds, thereby improving the screening efficiency. A driving device is also provided, which drives the dust removal component and the reciprocating component at the same time, thereby realizing the automated operation of dust removal and vibration screening of the seeds, greatly improving the screening efficiency, reducing manual intervention, and being more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an overall schematic diagram of the utility model;

[0013] Figure 2 This is a schematic diagram of the screening device of the utility model;

[0014] Figure 3 It is a bottom view schematic diagram of the utility model.

[0015] Among them, 1. bracket; 2. lower hopper; 3. screening device; 31. frame; 32. guide plate; 33. first screen; 34. discharge chute; 35. second screen; 4. connector; 41. mounting seat; 42. connecting arm; 43. fixing seat; 5. dust removal assembly; 51. shell; 52. air outlet channel; 53. rotating shaft; 54. blades; 6. reciprocating assembly; 61. crankshaft; 62. connecting rod; 63. hinged seat; 7. pulley transmission mechanism; 8. driving device. DETAILED DESCRIPTION

[0016] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0017] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0018] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0019] In the embodiment, it is given by Figures 1-3 A seed screening device for seedlings, comprising a bracket 1, a feeding hopper 2 is arranged on the bracket 1, the discharging end of the feeding hopper 2 is communicated with a screening device 3, and the screening device 3 and the bracket 1 are connected by a connecting member 4. A driving device 8 is fixedly installed on the bracket 1, a dust removal component 5 and a reciprocating component 6 are respectively arranged at the output end of the driving device 8, and the dust removal component 5 is used for removing dust in the seeds, and the reciprocating component 6 is used for driving the screening device 3 to vibrate continuously. The seedlings seeds are first put into the feeding hopper 2. As the seeds accumulate, they naturally fall through the discharging end of the feeding hopper 2 and enter the screening device 3. When the seeds enter the screening device 3, the dust removal component starts, and by generating an air flow, the dust and light impurities in the seeds are blown away to achieve the purpose of dust removal. Subsequently, the reciprocating component 6 drives the screening device 3 to vibrate continuously, and seeds of different sizes will respectively pass through sieves with different mesh numbers to achieve hierarchical screening.

[0020] Referring to Figures 1-3 , wherein, the screening device 3 includes a frame body 31, which is inclined and located below the feeding hopper 2. One side of the frame body 31 is open, and a diversion plate 32 is welded at the opening. A first sieve 33 is arranged inside the frame body 31, a discharge chute 34 is arranged on one side of the first sieve 33 and the discharge chute 34 is at the same horizontal height as the first sieve. A blanking hole is opened on the bottom surface of the frame body 31, and a second sieve 35 located below the first sieve 33 is arranged in the blanking hole;

[0021] With the above structural arrangement, the inclined box body 31 helps the seeds to slide down naturally under the action of gravity and the inclined plane, while avoiding the accumulation of seeds in the device. When the seeds enter the box body 31, they first encounter the first sieve 33, which is used to intercept larger seeds, that is, high-quality seeds. Under the action of inclination, the high-quality seeds gradually roll down to the discharge chute 34 and are collected, while the rest fall through the meshes of the first sieve 33 to the second sieve 35. The second sieve 35 can separate defective seeds and fine sand and gravel. The defective seeds flow out from the diversion plate 32, while the fine sand and gravel pass through the second sieve 35.

[0022] Refer to Figures 1-3 , wherein, the mesh number of the first sieve 33 is smaller than that of the second sieve 35;

[0023] With the above structural arrangement, both the first sieve 33 and the second sieve 35 are detachably connected to the box body 31 through fixing bolts, and sieves with different mesh numbers achieve hierarchical screening and fine separation of seeds, ensuring the accuracy and reliability of the screening results.

[0024] Refer to Figures 1-3 , wherein, the connecting member 4 includes a mounting seat 41, the mounting seat 41 is fixedly installed on the bracket 1, a connecting arm 42 is rotatably connected to the mounting seat 41, a fixing seat 43 is fixedly installed on one side surface of the box body 31, and one end of the connecting arm 42 away from the mounting seat 41 is rotatably connected to the fixing seat 43;

[0025] With the above structural arrangement, when the box body 31 vibrates continuously, the vibration range of the box body 31 is limited by the connecting arm 42.

[0026] Refer to Figures 1-3 , wherein, the dust removal assembly 5 includes a housing 51, the housing 51 is fixedly installed on the bracket 1, and an air outlet channel 52 is opened on one side of the housing 51 close to the screening device 3. A rotating shaft 53 is rotatably connected to the inner side of the housing 51, and a plurality of blades 54 are welded on the rotating shaft 53 and are distributed at equal intervals in a ring shape;

[0027] With the above structural arrangement, when the rotating shaft 53 rotates continuously, it drives the blades 54 to generate an air flow. The air flow passes through the air outlet channel 52 and blows towards the seeds that are falling into the box body 31, so as to achieve the effect of dust stripping.

[0028] Refer to Figures 1-3 , wherein, the reciprocating assembly 6 includes a crankshaft 61, the crankshaft 61 is rotatably connected to the bracket 1 through a bearing seat, a connecting rod 62 is rotatably connected to the crankshaft 61, a hinge seat 63 is fixedly installed on the box body 31, and one end of the connecting rod 62 away from the crankshaft 61 is hinged to the hinge seat 63;

[0029] With the above structural arrangement, when the crankshaft 61 rotates, it drives the connecting rod 62 to displace. As the connecting rod 62 rotates and swings, it exerts a varying force on the hinge seat 63, and this force is transmitted to the frame 31 through the hinge seat 63. Moreover, the rotation of the connecting rod 62 and the crankshaft 61 is continuous, effectively converting the rotational motion of the external power source into the reciprocating vibration of the frame 31, thereby enhancing the screening capacity and efficiency of the screening device.

[0030] Referring to Figures 1-3 , wherein, the output end of the driving device 8 is drivingly connected to both the rotating shaft 53 and the crankshaft 61 through the pulley transmission mechanism 7;

[0031] With the above structural arrangement, the driving device 8 is a stepping motor in the prior art and is also the driving source of the entire device. It drives the rotating shaft 53 and the crankshaft 61 to rotate through the pulley transmission mechanism 7, while reducing energy consumption, which conforms to the concept of energy conservation and environmental protection.

[0032] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A seedling seed screening device, comprising a support (1), characterized in that: The support (1) is provided with a lower hopper (2), the discharge end of the lower hopper (2) is connected to a screening device (3), and the screening device (3) is connected to the support (1) via a connecting piece (4). A driving device (8) is fixedly mounted on the support (1), and a dust removal component (5) and a reciprocating component (6) are respectively provided at the output end of the driving device (8), wherein the dust removal component (5) is used to remove dust from seeds, and the reciprocating component (6) is used to drive the screening device (3) to vibrate continuously.

2. A seedling seed screening device according to claim 1, characterized in that: The screening device (3) comprises a frame (31) which is arranged at an angle and is located below the lower hopper (2); one side of the frame (31) is arranged with an opening, and a guide plate (32) is welded at the opening; a first screen (33) is arranged in the frame (31); a discharge trough (34) is arranged on one side of the first screen (33), and the discharge trough (34) and the first screen are at the same horizontal height; a discharge hole is opened on the bottom surface of the frame (31), and a second screen (35) is arranged in the discharge hole and is located below the first screen (33).

3. A seedling seed screening device according to claim 2, characterized in that: The mesh size of the first sieve (33) is smaller than that of the second sieve (35).

4. A seedling seed screening device according to claim 2, characterized in that: The connecting member (4) comprises a mounting seat (41), the mounting seat (41) is fixedly mounted on the bracket (1), a connecting arm (42) is rotatably connected to the mounting seat (41), a fixing seat (43) is fixedly mounted on a side surface of the frame (31), and one end of the connecting arm (42) away from the mounting seat (41) is rotatably connected to the fixing seat (43).

5. The seedling seed screening device according to claim 1, characterized in that: The dust removal assembly (5) comprises a shell (51), the shell (51) is fixedly mounted on the bracket (1), and an air outlet channel (52) is provided on a side of the shell (51) close to the screening device (3), a rotating shaft (53) is rotatably connected to the inner side of the shell (51), and a plurality of blades (54) equidistantly distributed in an annular shape are welded to the rotating shaft (53).

6. A seedling seed screening device according to claim 2, characterized in that: The reciprocating assembly (6) comprises a crankshaft (61), which is rotatably connected to the bracket (1) via a bearing seat, a connecting rod (62) is rotatably connected to the crankshaft (61), a hinge seat (63) is fixedly mounted on the frame (31), and one end of the connecting rod (62) away from the crankshaft (61) is hinged to the hinge seat (63).

7. A seedling seed screening device according to claim 5 or 6, characterized in that: The output end of the driving device (8) is connected to the rotating shaft (53) and the crankshaft (61) through a belt pulley transmission mechanism (7).

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