Hydrilla varticillata seed screening device

Abstract

The utility model relates to seed screening, in particular to a hydrilla varticillata seed screening device which comprises a movable frame and a mesh screen basket arranged above the movable frame, a plurality of spring supporting pieces used for supporting the mesh screen basket in a floating mode are arranged at the upper end of the movable frame, a lower limiting plate is arranged at the lower end of the movable frame, and the lower limiting plate is connected with the movable frame in a sliding mode. Limiting wheels are arranged at the upper end of the mesh screen basket, an upper limiting plate is arranged above the mesh screen basket, the lower end face of the upper limiting plate is in sliding connection with the limiting wheels, and at least one arc-shaped protrusion is arranged on the lower end face of the upper limiting plate. The reciprocating transmission mechanism can push the movable frame and control the movable frame to horizontally move left and right at the upper end of the lower limiting plate, limiting wheels on the upper end face of the mesh screen basket can slide close to the lower end face of the upper limiting plate, and when the limiting wheels make contact with arc-shaped protrusions on the lower end face of the upper limiting plate, the arc-shaped protrusions press the mesh screen basket to fall down. In the screening process, the mesh screen basket can accelerate screening of the hydrilla varticillata seeds in a left-right shaking and up-down shaking combined movement mode.

Description

Technical Field

[0001] The utility model relates to seed screening, in particular to a Hydrilla verticillata seed screening device. Background Art

[0002] Hydrilla verticillata, also known as Myriophyllum verticillatum, is a common aquatic plant widely used in water purification and aquaculture, especially as feed and habitat for aquatic animals such as fish, shrimps, and crabs. Before collecting Hydrilla verticillata seeds for planting, a certain degree of screening is required to ensure the quality of the seeds and subsequent germination rate.

[0003] The specific size standards of Hydrilla verticillata seeds vary depending on the variety and specific circumstances. Tools such as mesh sieves can be used to screen according to the average size of the seeds (about 0.4 - 0.5 cm in diameter), removing seeds that are too small or too large and do not conform to the normal size range. Common mesh sieve devices mainly include a movable sieve. A support is provided below the movable sieve, and a mechanical vibration mechanism is arranged between the support and the movable sieve. The vibration mechanism controls the up-and-down shaking of the movable sieve to achieve seed screening. The common mesh sieve device only has this one screening mode of up-and-down vibration. Therefore, in actual use, the up-and-down vibration mode may not be sufficient to make all seeds fully contact the sieve surface. Especially when the humidity of seed treatment is high, it is easy to cause mesh blockage and reduce the screening efficiency. Summary of the Utility Model

[0004] In view of the above problems, the utility model provides a Hydrilla verticillata seed screening device to solve the defect that in actual use of the existing screening device, the up-and-down vibration mode may not be sufficient to make all seeds fully contact the sieve surface, especially when the humidity of seed treatment is high, it is easy to cause mesh blockage and reduce the screening efficiency.

[0005] To achieve the purpose of the utility model, the utility model is realized through the following technical solutions: A Hydrilla verticillata seed screening device includes a movable frame and a mesh sieve basket arranged above the movable frame. A plurality of spring support members for floating support of the mesh sieve basket are arranged at the upper end of the movable frame;

[0006] A lower limit plate is arranged at the lower end of the movable frame, and the lower limit plate is slidably connected with the movable frame. A limit wheel is arranged at the upper end of the mesh sieve basket, and an upper limit plate is arranged above the mesh sieve basket. The lower end surface of the upper limit plate is slidably connected with the limit wheel, and at least one arc-shaped protrusion is arranged on the lower end surface of the upper limit plate;

[0007] Both ends of the lower limit plate are fixedly connected with both ends of the upper limit plate through connecting plates. A reciprocating transmission mechanism for pushing the movable frame and the mesh sieve basket to slide horizontally back and forth on the upper end of the lower limit plate is arranged on the lower limit plate.

[0008] A further improvement lies in that: the reciprocating transmission mechanism includes a mounting seat and a deflection wheel seat. The mounting seat is fixedly connected to one side of the lower limit plate. The deflection wheel seat is slidably connected to the upper end of the mounting seat. An adapter rod is provided on the side of the deflection wheel seat facing the movable frame. The two ends of the adapter rod are respectively fixedly connected to the movable frame and the deflection wheel seat. A deflection wheel is provided in the wheel groove of the deflection wheel seat. The deflection wheel is movably matched with the deflection wheel seat. A motor for controlling the rotation of the deflection wheel is provided at the lower end of the mounting seat.

[0009] A further improvement lies in that: a limit sleeve is provided at the upper end of the mounting seat. The limit sleeve is fixedly connected to the mounting seat. The limit sleeve is sleeved outside the adapter rod and is slidably connected to the adapter rod.

[0010] A further improvement lies in that: the spring support member includes a fixed cylinder and a movable column. The fixed cylinder is fixedly connected to the upper end of the movable frame. The movable column is fixedly connected to the lower end of the screen basket. The lower end of the movable column is inserted into the upper port of the fixed cylinder. The movable column is slidably connected to the fixed cylinder. A spring is provided in the fixed cylinder. The upper end and the lower end of the spring are respectively fixedly connected to the movable column and the fixed cylinder.

[0011] A further improvement lies in that: a first sliding groove is formed on the upper end surface of the lower limit plate. A slider is provided at the lower end of the movable frame. The slider is fixedly connected to the movable frame. The lower end of the slider is inserted into the first sliding groove and is slidably connected to the first sliding groove.

[0012] A further improvement lies in that: a second sliding groove is formed on the lower end surfaces of the upper limit plate and the arc-shaped protrusion. The top of the limit wheel is inserted into the second sliding groove and is slidably connected to the second sliding groove.

[0013] The beneficial effects of the present utility model are as follows:

[0014] During the screening process, the screen basket can combine the left-right shaking and up-down shaking movement modes to accelerate the screening of Hydrilla verticillata seeds. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a structural diagram of the movable frame in the present utility model.

[0017] Figure 2 It is a structural diagram of the deflection wheel seat in the present utility model.

[0018] Figure 3 It is a structural diagram of the screen basket in the present utility model.

[0019] Figure 4 It is the structural diagram of the upper limit plate in the present utility model.

[0020] Figure 5 It is the structural diagram inside the fixed cylinder in the present utility model.

[0021] Wherein: 1. Lower limit plate; 101. Connecting plate; 102. First sliding groove; 2. Movable frame; 201. Slide block; 3. Spring support; 301. Fixed cylinder; 302. Movable column; 303. Spring; 4. Mesh sieve basket; 5. Limiting wheel; 6. Upper limit plate; 601. Arc-shaped protrusion; 602. Second sliding groove; 7. Reciprocating transmission mechanism; 701. Mounting seat; 702. Biased wheel seat; 703. Motor; 704. Biased wheel; 705. Connecting rod. Specific embodiments

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0023] According to Figure 1 、 2 As shown in Figures 2, 3, 4, a Hydrilla verticillata seed screening device is proposed in this embodiment, which includes a movable frame 2 and a mesh sieve basket 4 arranged above the movable frame 2. A plurality of spring supports 3 for floating support of the mesh sieve basket 4 are arranged at the upper end of the movable frame 2; the Hydrilla verticillata seeds to be screened are put into the mesh sieve basket 4, and the movable frame 2 floats and supports the mesh sieve basket 4 through the spring supports 3.

[0024] A lower limit plate 1 is arranged at the lower end of the movable frame 2. The lower limit plate 1 is slidably connected to the movable frame 2. A limiting wheel 5 is arranged at the upper end of the mesh sieve basket 4. An upper limit plate 6 is arranged above the mesh sieve basket 4. The lower end surface of the upper limit plate 6 is slidably connected to the limiting wheel 5. At least one arc-shaped protrusion 601 is arranged on the lower end surface of the upper limit plate 6;

[0025] Both ends of the lower limit plate 1 are fixedly connected to both ends of the upper limit plate 6 through connecting plates 101. A reciprocating transmission mechanism 7 for pushing the movable frame 2 and the mesh sieve basket 4 to slide horizontally back and forth on the upper end of the lower limit plate 1 is arranged on the lower limit plate 1.

[0026] The reciprocating transmission mechanism 7 can push the movable frame 2 to control the horizontal movement of the movable frame 2 to the left and right on the upper end of the lower limit plate 1. The screen basket 4 is installed on the upper end of the movable frame 2 through a spring support 3. When the movable frame 2 moves, the screen basket 4 will also move accordingly. The limit wheel 5 on the upper end surface of the screen basket 4 will slide along the lower end surface of the upper limit plate 6. When it touches the arc-shaped protrusion 601 on the lower end surface of the upper limit plate 6, the arc-shaped protrusion 601 will press the screen basket 4 down, and the spring support 3 supports the screen basket 4 to reset. During screening, the screen basket 4 can accelerate the screening of Hydrilla verticillata seeds through a combination of left-right shaking and up-down shaking movements.

[0027] For the specific structure of the reciprocating transmission mechanism 7, please refer to the following description.

[0028] The reciprocating transmission mechanism 7 includes a mounting seat 701 and a deflection wheel seat 702. The mounting seat 701 is fixedly connected to one side of the lower limit plate 1. The deflection wheel seat 702 is slidably connected to the upper end of the mounting seat 701. An adapter rod 705 is provided on the side of the deflection wheel seat 702 facing the movable frame 2. Both ends of the adapter rod 705 are fixedly connected to the movable frame 2 and the deflection wheel seat 702 respectively. A deflection wheel 704 is provided in the wheel groove of the deflection wheel seat 702. The deflection wheel 704 is movably engaged with the deflection wheel seat 702. A motor 703 for controlling the rotation of the deflection wheel 704 is provided at the lower end of the mounting seat 701.

[0029] Comprehensively Figure 1 and Figure 2 , the working steps of the reciprocating transmission mechanism 7 are as follows:

[0030] The characteristic of the deflection wheel 704 is that its wheel center is not at the geometric center of the wheel, but is offset from the center by a certain distance, forming an eccentricity. When the motor 703 drives the deflection wheel 704 to rotate, the outer edge of the deflection wheel 704 will describe a circular trajectory. The deflection wheel seat 702 that cooperates with the outer edge of the deflection wheel 704 will perform a reciprocating linear motion as the deflection wheel 704 rotates. Since the deflection wheel seat 702 is fixed to the movable frame 2 through the adapter rod 705, the movable frame 2 will also perform a reciprocating linear motion following the seat.

[0031] It is further worth noting that a limit sleeve is provided at the upper end of the mounting seat 701. The limit sleeve is fixedly connected to the mounting seat 701 and sleeved on the outside of the adapter rod 705 and is slidably connected to the adapter rod 705. When the deflection wheel seat 702 pushes the movable frame 2 through the adapter rod 705, the limit sleeve sleeved on the outside of the adapter rod 705 will limit both the adapter rod 705 and the deflection wheel seat 702 at the same time.

[0032] Please refer to Figure 3 and Figure 5The spring support member 3 includes a fixed cylinder 301 and a movable column 302. The fixed cylinder 301 is fixedly connected to the upper end of the movable frame 2, and the movable column 302 is fixedly connected to the lower end of the mesh basket 4. The lower end of the movable column 302 is inserted into the upper port of the fixed cylinder 301. The movable column 302 is slidably connected to the fixed cylinder 301. A spring 303 is provided in the fixed cylinder 301. The upper end and the lower end of the spring 303 are fixedly connected to the movable column 302 and the fixed cylinder 301 respectively.

[0033] The movable column 302 is fixed to the mesh basket 4, and the fixed cylinder 301 is fixed to the movable frame 2. Under the support of the spring 303, the limiting wheel 5 at the upper end of the mesh basket 4 will always be in a close contact with the lower end surface of the upper limit plate 6. When the limiting wheel 5 at the upper end of the mesh basket 4 slides to the arc-shaped protrusion 601, the arc-shaped protrusion 601 will exert a downward force on the mesh basket 4. At this time, the mesh basket 4 falls, and the movable column 302 also falls, and the spring 303 in the fixed cylinder 301 contracts. When the limiting wheel 5 is offset from the arc-shaped protrusion 601, the movable column 302 and the mesh basket 4 will be reset under the push of the spring 303, thereby realizing the up and down vibration screening of the mesh basket 4.

[0034] For the sliding connection method between the lower limit plate 1 and the movable frame 2, please refer to the following description.

[0035] A first slide groove 102 is formed on the upper end surface of the lower limit plate 1 , a slider 201 is formed at the lower end of the movable frame 2 , the slider 201 is fixedly connected to the movable frame 2 , and the lower end of the slider 201 is inserted into the first slide groove 102 and slidably connected to the first slide groove 102 .

[0036] When the movable frame 2 moves on the upper end of the lower limit plate 1, the slider 201 at the lower end of the movable frame 2 will slide along the first slide groove 102 at the upper end of the lower limit plate 1. The first slide groove 102 cooperates with the slider 201 to limit the movable frame 2 from the lower end of the movable frame 2, thereby improving the stability of the movable frame 2 when moving left and right.

[0037] The sliding connection between the upper limit plate 6 and the limit wheel 5 is described below.

[0038] The lower end surfaces of the upper limit plate 6 and the arc-shaped protrusion 601 are provided with a second slide groove 602 , and the top of the limiting wheel 5 is inserted into the second slide groove 602 and slidably connected with the second slide groove 602 .

[0039] The advantage of providing the second slide groove 602 on the lower end surface of the upper limit plate 6 and the arc-shaped protrusion 601 is that when the mesh basket 4 moves, the limiting wheel 5 at the upper end of the mesh basket 4 will slide along the second slide groove 602, and the second slide groove 602 will limit the limiting wheel 5, so that the limiting wheel 5 and the upper limit plate 6 always maintain a coordinated state, thereby improving the stability of the mesh basket 4 when moving left and right.

[0040] How this application works:

[0041] The Hydrilla verticillata seeds to be screened are put into the mesh sieve basket 4, and the movable frame 2 is floatingly supported on the mesh sieve basket 4 through the spring support 3. The reciprocating transmission mechanism 7 pushes the movable frame 2 to control the left and right horizontal movement of the movable frame 2 on the upper end of the lower limit plate 1. The mesh sieve basket 4 is installed on the upper end of the movable frame 2 through the spring support 3. When the movable frame 2 moves, the mesh sieve basket 4 will also move accordingly. The limit wheel 5 on the upper end surface of the mesh sieve basket 4 will slide along the lower end surface of the upper limit plate 6. When it contacts the arc-shaped protrusion 601 on the lower end surface of the upper limit plate 6, the arc-shaped protrusion 601 will press the mesh sieve basket 4 to drop, and the spring support 3 supports the mesh sieve basket 4 to reset. During screening, the mesh sieve basket 4 can combine left and right shaking with up and down shaking to accelerate the screening of Hydrilla verticillata seeds.

[0042] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application 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, and therefore should not be construed as a limitation of the present application. Unless otherwise clearly specified and defined, the terms "installed", "connected" and "connected" 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 a mechanical connection or an electrical 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 application can be understood according to specific circumstances.

[0043] The above are only the specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A device for screening Hydrilla verticillata seeds, comprising a movable frame (2) and a mesh basket (4) arranged above the movable frame (2), wherein the upper end of the movable frame (2) is provided with a plurality of spring support members (3) for floatingly supporting the mesh basket (4), characterized in that: A lower limit plate (1) is provided at the lower end of the movable frame (2), and the lower limit plate (1) is slidably connected to the movable frame (2); a limit wheel (5) is provided at the upper end of the mesh basket (4); an upper limit plate (6) is provided above the mesh basket (4), and the lower end surface of the upper limit plate (6) is slidably connected to the limit wheel (5); and the lower end surface of the upper limit plate (6) is provided with at least one arc-shaped protrusion (601); The two ends of the lower limit plate (1) are fixedly connected to the two ends of the upper limit plate (6) via a connecting plate (101), and the lower limit plate (1) is provided with a reciprocating transmission mechanism (7) for driving the movable frame (2) and the mesh basket (4) to slide horizontally back and forth on the upper end of the lower limit plate (1).

2. The device for screening Hydrilla verticillata seeds according to claim 1, characterized in that: The reciprocating transmission mechanism (7) comprises a mounting seat (701) and a deflection wheel seat (702); the mounting seat (701) is fixedly connected to one side of the lower limit plate (1); the deflection wheel seat (702) is slidably connected to the upper end of the mounting seat (701); a connecting rod (705) is provided on the side of the deflection wheel seat (702) facing the movable frame (2); two ends of the connecting rod (705) are respectively fixedly connected to the movable frame (2) and the deflection wheel seat (702); a deflection wheel (704) is provided in a wheel groove of the deflection wheel seat (702); the deflection wheel (704) is movably matched with the deflection wheel seat (702); and a motor (703) for controlling the rotation of the deflection wheel (704) is provided at the lower end of the mounting seat (701).

3. The device for screening Hydrilla verticillata seeds according to claim 2, characterized in that: A limiting sleeve is provided at the upper end of the mounting seat (701), the limiting sleeve is fixedly connected to the mounting seat (701), and the limiting sleeve is sleeved on the outside of the connecting rod (705) and is slidably connected to the connecting rod (705).

4. The device for screening Hydrilla verticillata seeds according to claim 1, characterized in that: The spring support member (3) comprises a fixed cylinder (301) and a movable column (302); the fixed cylinder (301) is fixedly connected to the upper end of the movable frame (2); the movable column (302) is fixedly connected to the lower end of the mesh basket (4); the lower end of the movable column (302) is inserted into the upper end of the fixed cylinder (301); the movable column (302) is slidably connected to the fixed cylinder (301); a spring (303) is provided in the fixed cylinder (301); the upper end and the lower end of the spring (303) are fixedly connected to the movable column (302) and the fixed cylinder (301) respectively.

5. The device for screening Hydrilla verticillata seeds according to claim 1, characterized in that: The upper end surface of the lower limit plate (1) is provided with a first slide groove (102), the lower end of the movable frame (2) is provided with a slider (201), the slider (201) is fixedly connected to the movable frame (2), and the lower end of the slider (201) is inserted into the first slide groove (102) and is slidably connected to the first slide groove (102).

6. The device for screening Hydrilla verticillata seeds according to claim 1, characterized in that: The upper limit plate (6) and the lower end surface of the arc-shaped protrusion (601) are provided with a second slide groove (602), and the top of the limiting wheel (5) is inserted into the second slide groove (602) and is slidably connected to the second slide groove (602).

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