Corn seed screening device
By adopting curved through grooves and alternate sliding screen design in the corn seed screening device, the problem of low efficiency of traditional screening machines is solved, efficient screening and simplified structure are achieved, and cost is reduced.
Patent Information
- Application Number
- CN202421100428.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-20
AI Technical Summary
Traditional corn seed sieving machines are inefficient and require multi-stage screening, which increases the complexity of the device structure and the cost of use. The flat characteristics of corn seeds lead to low screening efficiency.
A corn seed screening device was designed, using two screens that abut each other and curved troughs to form a slide. The screens are controlled to alternately slide through the reciprocating drive mechanism to increase the collision between the seed and the curved trough side walls, and reduce the seeds stuck in the The probability of sieve holes and improve seed sieving efficiency through elastic reset mechanisms and diversion tanks.
It improves the efficiency and quality of corn seed sieving, extends the residence time of seeds in the slide, reduces the probability of seeds stuck in the sieve hole, simplifies the device structure, and reduces the cost of use.
Smart Images
Figure CN222325762U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of seed screening equipment, in particular to a corn seed screening device. Background Art
[0002] At present, it is often necessary to screen corn seeds during agricultural planting to leave healthy and plump seeds and avoid dry, flat and necrotic seeds that remain and affect the germination rate of seeds.
[0003] Corn seeds can be screened using screening machines, but traditional screening machines basically control the reciprocating motion of the screen to screen out unqualified corn seeds. However, corn seeds are different from seeds such as soybeans, which have smooth surfaces. Corn seeds are flat in shape, so when screening, some traditional screening machines are less efficient and generally require multiple levels of screening to meet the needs, which increases the complexity of the device structure and the cost of use.
[0004] Therefore, a corn seed screening device is proposed. Utility Model Content
[0005] The utility model aims to overcome the deficiencies of the prior art and provide a corn seed screening device.
[0006] The purpose of this utility model is achieved through the following technical solutions:
[0007] A corn seed screening device comprises a bracket, on which a bottom plate is obliquely arranged, and a receiving tray is arranged at the feeding end of the bottom plate; a curved through groove connected to the receiving tray is opened in the middle of the bottom plate, and the extension direction of the curved through groove is the same as the length direction of the bottom plate; two mutually abutting screens are slidably connected to the bottom wall of the bottom plate, and any of the above-mentioned screens is in contact with the above-mentioned bottom plate, and the sliding direction of the above-mentioned screens is the same as the length direction of the above-mentioned bottom plate; a reciprocating driving mechanism is arranged on the bottom plate, and the reciprocating driving mechanism is used to drive the two above-mentioned screens to slide alternately in their sliding directions; an elastic reset mechanism is arranged at the discharging end of the bottom plate, and any of the above-mentioned screens is connected to the elastic reset mechanism.
[0008] Furthermore, in the utility model, the reciprocating drive mechanism includes a motor connected to the base plate, a rotating shaft rotatably connected to the base plate, and at least two cams spaced apart on the rotating shaft, the rotating shaft is transmission-connected to the output shaft of the motor, and the center axis of the rotating shaft is perpendicular to the sliding direction of any of the screens; the two cams correspond to the two screens respectively, and the two screens are respectively provided with rollers matched with the two cams, and the two rollers are respectively located on both sides of the rotating shaft, and in a balanced state, the two rollers are respectively abutted against the corresponding cams.
[0009] Furthermore, in the utility model, the elastic reset mechanism comprises an L-shaped blanking plate and at least two guide shafts, the blanking plate is connected to the bottom plate, and the corn seeds rolling out of the curved through groove can fall onto the blanking plate; one end of the two guide shafts are respectively connected to the two screens, and the other ends are respectively passed through the blanking plate, and the central axis of any guide shaft is parallel to the sliding direction of the screen; a limit ring and a spring are provided on any guide shaft, one end of the spring is connected to the limit ring, and the other end is connected to the blanking plate.
[0010] Furthermore, in the utility model, a plurality of guide grooves are provided on the blanking plate, and the corn seeds rolling out of the curved through grooves can fall into the guide grooves.
[0011] Furthermore, in the present invention, the bottom plate is hinged to the bracket, a buffer is hinged to the bracket, and both the bottom plate and the bracket are hinged to the buffer.
[0012] Furthermore, in the present invention, baffles are provided on both sides of the bottom plate.
[0013] The beneficial effects of the utility model are:
[0014] The utility model provides a corn seed screening device. Two screens and a curved through groove form a slide. The curved design of the through groove can increase the resistance of the corn seeds rolling down, thereby prolonging the residence time of the corn seeds in the slide. More seeds can be screened in the same time period, thereby improving the screening quality. At the same time, the two screens slide alternately under the control of a reciprocating drive mechanism to "push and pull" the corn seeds in the slide, so that the corn seeds collide with the side wall of the curved through groove in the slide, which can reduce the probability of the corn seeds being stuck in the screen holes. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;
[0016] Figure 2 It is a structural schematic diagram of the reciprocating drive mechanism of an embodiment of the utility model;
[0017] Figure 3 It is a structural schematic diagram of the elastic reset mechanism of an embodiment of the utility model.
[0018] In the figure: 101- bracket; 201- bottom plate; 301- receiving tray; 401- curved through slot; 501- screen; 601- motor; 602- rotating shaft; 603- cam; 604- roller; 701- unloading plate; 702- guide shaft; 703- limiting ring; 704- spring; 801- guide slot; 901- buffer; 1001- baffle. DETAILED DESCRIPTION
[0019] The following will be combined with the embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0020] See also Figure 1-3 , the utility model provides a technical solution:
[0021] A corn seed screening device comprises a bracket 101, on which a bottom plate 201 is obliquely arranged, and a receiving tray 301 is arranged at the feeding end of the bottom plate 201; a curved through groove 401 connected to the receiving tray 301 is opened in the middle of the bottom plate 201, and the extension direction of the curved through groove 401 is the same as the length direction of the bottom plate 201; two mutually abutting screens 501 are slidably connected to the bottom wall of the bottom plate 201, and any screen 501 is fitted with the bottom plate 201, and the sliding direction of the screen 501 is the same as the length direction of the bottom plate 201; a reciprocating driving mechanism is arranged on the bottom plate 201, and the reciprocating driving mechanism is used to drive the two screens 501 to slide alternately in their sliding directions; an elastic reset mechanism is arranged at the discharging end of the bottom plate 201, and any screen 501 is connected to the elastic reset mechanism.
[0022] In some implementations of the present embodiment, the reciprocating drive mechanism includes a motor 601 connected to the base plate 201, a rotating shaft 602 rotatably connected to the base plate 201, and at least two cams 603 arranged at intervals on the rotating shaft 602, the rotating shaft 602 is drivingly connected to the output shaft of the motor 601, and the central axis of the rotating shaft 602 is perpendicular to the sliding direction of any screen 501; the two cams 603 correspond to two screens 501 respectively, and the two screens 501 are respectively provided with rollers 604 adapted to the two cams 603, the two rollers 604 are respectively located on both sides of the rotating shaft 602, and in a balanced state, the two rollers 604 respectively abut against the corresponding cams 603.
[0023] In some embodiments of the present embodiment, the elastic reset mechanism includes an L-shaped blanking plate 701 and at least two guide shafts 702, the blanking plate 701 is connected to the bottom plate 201, and the corn seeds rolling out of the curved through groove 401 can fall onto the blanking plate 701; one end of the two guide shafts 702 are respectively connected to the two screens 501, and the other ends are respectively passed through the blanking plate 701, and the central axis of any guide shaft 702 is parallel to the sliding direction of the screen 501; a limit ring 703 and a spring 704 are provided on any guide shaft 702, one end of the spring 704 is connected to the limit ring 703, and the other end is connected to the blanking plate 701.
[0024] In this embodiment, four cams 603 are installed on the rotating shaft 602 at intervals, and the "protruding directions" of the four cams 603 are consistent. Two cams 603 are installed on each screen 501. The cams 603 on the two screens 501 are distributed on both sides of the rotating shaft 602. The four cams 603 are fitted with four rollers 604 in a one-to-one correspondence to increase the driving stability of this structure. At the same time, in this embodiment, the number of guide rods is four, and each screen 501 is connected with two guide rods to increase the stability of the connection.
[0025] from Figure 2 From the perspective of FIG. 6 , when the motor 601 drives the rotating shaft 602 to rotate, the four cams 603 rotate synchronously. If the rotating directions of the rotating shaft 602 are different, the moving directions of the screen 501 are different. After the two cams 603 on the left are in contact with the two rollers 604 on the left, the two rollers 604 on the left are driven to rotate, so that the left screen 501 moves to the upper right, and the corresponding spring 704 is stretched in this process; after the two cams on the left are separated from the two rollers on the left, the left screen 501 moves to the lower left under the action of the spring 704; then the two cams on the right are contacted with the two rollers on the right and driven to rotate, so that the right screen 501 moves to the upper right, and after the two cams on the right are separated from the two rollers on the right, the right screen 501 moves to the lower right under the action of the corresponding spring 704; then the two cams on the left are in contact with the two rollers 604 on the left, and then the two rollers on the left are driven to rotate, so that the left screen 501 moves to the upper right again, and the rotating shaft 602 circulates to control the two screens 501 to slide alternately. Another situation is that the right screen 501 moves to the lower left first, and the two cams 603 on the right first drive the two rollers 604 on the right to rotate, so that the right screen 501 moves to the lower left, and the corresponding spring 704 is compressed in this process; when the two cams 603 on the right are separated from the two rollers 604 on the right, the right screen 501 moves to the upper right under the elastic force of the corresponding spring 704; then the two cams on the left are contacted with the two rollers on the left and drive them to rotate, so that the left screen 501 moves to the lower left, and the corresponding spring 704 is compressed in this process; when the two cams on the left are separated from the two rollers on the left, the left screen 501 moves to the upper right under the action of the corresponding spring 704; then the two cams on the right are contacted with the two rollers 604 on the right again, so that the right screen 501 moves to the lower left again, so that the rotating shaft 602 circulates to control the two screens 501 to slide alternately.
[0026] In some implementations of this embodiment, a plurality of guide grooves 801 are provided on the feed plate 701, and corn seeds rolling out of the curved through grooves 401 can fall into the guide grooves 801. When the screened corn seeds roll onto the feed plate 701 through the curved through grooves 401, they can roll into the guide grooves 801. The guide grooves 801 can reduce the occurrence of seeds rolling around, and a collection bucket can be placed under the feed plate 701 to collect the screened seeds.
[0027] In some implementations of this embodiment, the bottom plate 201 is hinged to the bracket 101, a buffer 901 is hinged to the bracket 101, and the bottom plate 201 and the bracket 101 are both hinged to the buffer 901. When a certain amount of corn seeds are poured into the receiving tray 301, due to the existence of the buffer 901, the bottom plate 201 and the receiving tray 301 will continuously vibrate under the impact of the gravity of the corn seeds during this process, and this vibration can enable the corn seeds in the receiving tray 301 to quickly enter the curved through groove 401.
[0028] When the corn seeds roll down from the curved groove 401 to the lower plate 701, if some of the corn seeds roll down to the upper surface of the bottom plate 201, the corn seeds are likely to fall from the side of the bottom plate 201, making it difficult to collect. To solve this problem, baffles 1001 are installed on both sides of the bottom plate 201, and the baffles 1001 can prevent the corn seeds from falling from both sides of the bottom plate 201.
[0029] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.
Claims
1. A corn seed screening device, comprising a bracket (101), characterized in that: A bottom plate (201) is obliquely arranged on the bracket (101), and a receiving tray (301) is arranged at the feeding end of the bottom plate (201); a curved through groove (401) connected to the receiving tray (301) is opened in the middle of the bottom plate (201), and the extending direction of the curved through groove (401) is the same as the length direction of the bottom plate (201); two mutually abutting screens (501) are slidably connected to the bottom wall of the bottom plate (201), and any of the screens (501) is in contact with the bottom plate (201), and the sliding direction of the screens (501) is the same as the length direction of the bottom plate (201); a reciprocating drive mechanism is arranged on the bottom plate (201), and the reciprocating drive mechanism is used to drive the two screens (501) to slide alternately in their sliding directions; an elastic reset mechanism is arranged at the discharging end of the bottom plate (201), and any of the screens (501) is connected to the elastic reset mechanism.
2. A corn seed screening device according to claim 1, characterized in that: The reciprocating drive mechanism comprises a motor (601) connected to the base plate (201), a rotating shaft (602) rotatably connected to the base plate (201), and at least two cams (603) arranged at intervals on the rotating shaft (602); the rotating shaft (602) is drivingly connected to an output shaft of the motor (601); a central axis of the rotating shaft (602) is perpendicular to a sliding direction of any of the sieves (501); the two cams (603) respectively correspond to the two sieves (501); rollers (604) adapted to the two cams (603) are respectively arranged on the two sieves (501); the two rollers (604) are respectively located on two sides of the rotating shaft (602); and in a balanced state, the two rollers (604) respectively abut against the corresponding cams (603).
3. A corn seed screening device according to claim 1 or 2, characterized in that: The elastic reset mechanism comprises an L-shaped blanking plate (701) and at least two guide shafts (702), wherein the blanking plate (701) is connected to the bottom plate (201), and corn seeds rolling out of the curved through groove (401) can fall onto the blanking plate (701); one end of the two guide shafts (702) is respectively connected to the two sieves (501), and the other end is respectively penetrated through the blanking plate (701), and the central axis of any guide shaft (702) is parallel to the sliding direction of the sieve (501); and a limit ring (703) and a spring (704) are provided on any guide shaft (702), and one end of the spring (704) is connected to the limit ring (703), and the other end is connected to the blanking plate (701).
4. A corn seed screening device according to claim 3, characterized in that: The blanking plate (701) is provided with a plurality of guide grooves (801), and the corn seeds rolling out of the curved through grooves (401) can fall into the guide grooves (801).
5. The corn seed screening device according to claim 3, characterized in that: The bottom plate (201) is hinged to the bracket (101), a buffer (901) is hinged to the bracket (101), and both the bottom plate (201) and the bracket (101) are hinged to the buffer (901).
6. A corn seed screening device according to claim 3, characterized in that: Baffles (1001) are provided on both sides of the bottom plate (201).