Gravity sorting device for cultivating leymus chinensis seeds

Abstract

The invention discloses a gravity sorting device for leymus chinensis seed cultivation, and relates to the technical field of seed sorting, the gravity sorting device comprises a base and a bearing frame with one end hinged to the base, the bearing frame is connected with a gravity screening bin through a deformation assembly, and the bearing frame is provided with an eccentric driving mechanism for driving the gravity screening bin to do longitudinal reciprocating motion; a telescopic rod is hinged between the bearing frame and the base; wherein the bottom of the gravity screening bin is connected with the air pump, and the top is connected with the suction machine; the side part of the gravity screening bin is connected with plasma gas supply equipment; a non-contact electrostatic field intensity meter is arranged in the gravity screening bin, the longitudinal reciprocating motion frequency of the gravity screening bin and starting and stopping of plasma gas supply equipment are adjusted according to the detection result of the non-contact electrostatic field intensity meter, and therefore the seed agglomeration situation can be flexibly coped with.

Description

Technical Field

[0001] This invention relates to the field of seed sorting technology, and specifically to a gravity sorting device for the cultivation of sheepgrass seeds. Background Technology

[0002] As a key species for grassland ecological restoration and forage production in northern my country, the seed quality of Leymus chinensis directly affects the success of planting and yield potential. Currently, gravity sorting equipment is commonly used to treat Leymus chinensis seeds to improve sowing quality.

[0003] However, research has revealed some shortcomings in existing gravity sorting equipment for sheepgrass seeds: poor airflow control leads to unstable sorting accuracy and efficiency; static electricity issues lack real-time and effective monitoring and elimination methods, which can easily cause seed adhesion and damage to layering; and the equipment has a low level of intelligence and cannot automatically adjust parameters according to working conditions.

[0004] Therefore, it is necessary to provide a gravity sorting device for sheepgrass seed cultivation to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides the following technical solution: a gravity sorting device for Leymus chinensis seed cultivation, comprising a base and a support frame hinged to the base at one end. A gravity screening chamber is connected to the support frame via a deformation component. An eccentric drive mechanism is provided on the support frame to drive the gravity screening chamber in longitudinal reciprocating motion. A telescopic rod is hinged between the support frame and the base. An air pump is connected to the bottom of the gravity screening chamber, and a suction machine is connected to the top. A plasma gas supply device is connected to the side of the gravity screening chamber. A non-contact electrostatic field strength meter is installed inside the gravity screening chamber, and the longitudinal reciprocating motion frequency of the gravity screening chamber and the start / stop of the plasma gas supply device are adjusted according to the meter's detection results.

[0006] Preferably, the longitudinal reciprocating motion frequency of the gravity screening chamber increases with the increase of the field strength detected by the non-contact electrostatic field strength meter; when the field strength is greater than the first threshold, the plasma gas supply equipment is activated.

[0007] Preferably, the gravity screening chamber includes: a chamber body; a filter screen, which is detachably installed in the chamber body; an air equalization chamber, which is fixedly installed in the chamber body and located above the filter screen; a screen plate assembly, which is connected to the chamber body and located above the air equalization chamber; the bottom of the air equalization chamber has a slotted structure, the top is sealed, and the top is supplied with air to the screen plate assembly through multiple air pipes; an air equalization plate is provided inside the air equalization chamber.

[0008] Preferably, the sieve plate assembly includes: multiple sieve plate grooves spaced apart, adjacent sieve plate grooves are connected by elastic elements; an air jet micro-hole seat is provided at the top opening of the sieve plate groove, and the bottom is connected to an air equalization chamber through an air pipe.

[0009] Preferably, a miniature vibrator is installed at the bottom of each sieve plate groove; when the non-contact electrostatic field meter detects that the field strength is greater than the second threshold, the miniature vibrator is activated.

[0010] Preferably, the tops of multiple jet micro-orifice seats are connected to a leveling mesh plate; the top of the leveling mesh plate is connected to a support plate.

[0011] Preferably, the bearing plate is integrally formed with multiple protrusions; the space below the protrusions is supported by support rollers.

[0012] Preferably, a first discharge port and a second discharge port are provided on both sides of the silo body; a feed port is provided on the top of the silo body; and an air inlet connected to an air pump is provided at the bottom of the silo body.

[0013] Preferably, the deformation assembly includes: a connecting plate with a plurality of spaced deformation plates connected to its bottom, the ends of the deformation plates away from the connecting plate being connected to a support frame; a spring connected to the top of the connecting plate; and a connecting seat connected to the top of the spring and connected to the gravity screening chamber.

[0014] Preferably, the support rod assembly includes: a first support rod with one end hinged to the base; a second support rod with one end hinged to the first support rod and the other end hinged to the bearing frame, wherein the end of the second support rod near the first support rod integrally forms a limiting groove; and a screw rod with one end hinged to the first support rod and the other end limited to the limiting groove by two sets of bolts.

[0015] Compared with the prior art, the present invention provides a gravity sorting device for seed cultivation of Leymus chinensis, which has the following beneficial effects:

[0016] This invention utilizes a stable, vertically rising airflow created by a bottom air pump and a top suction machine, causing sheepgrass seeds to stratify within the airflow based on density differences. Simultaneously, the longitudinal reciprocating motion of the inclined filter and the sieving chamber works together to achieve physical separation of the seeds.

[0017] The design of the equalization chamber and sieve plate assembly in this invention ensures uniform and stable airflow, while the microjet generated by the jet micro-orifice seat promotes seed tumbling and prevents adhesion. The filter screen, as the base layer, directly intercepts impurities in the air. In addition, low-frequency mechanical waves are introduced for resonant frequency targeted excitation, actively promoting the movement and differentiation of heavy seeds and light seeds or light impurities by utilizing the inherent frequency difference between them, significantly improving sorting efficiency and accuracy.

[0018] In this invention, a non-contact electrostatic field strength meter continuously monitors the electrostatic field strength generated by seed friction, which is a sensitive indicator of reduced seed flowability or impurity accumulation and electrostatic adsorption. When the field strength increases, the longitudinal reciprocating motion frequency of the screening chamber is automatically increased to enhance the vibration screening effect and counteract the decreased flowability and initial agglomeration caused by static electricity. When the field strength exceeds a first threshold, the system automatically activates the plasma gas supply equipment to inject ionized gas into the chamber to neutralize static electricity, fundamentally preventing seeds from clogging due to electrostatic agglomeration. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of a gravity sorting device for seed cultivation of Leymus chinensis;

[0020] Figure 2 This is a three-dimensional structural diagram of the gravity screening chamber in this invention;

[0021] Figure 3 This is a three-dimensional structural diagram of the support rod assembly in this invention;

[0022] Figure 4 This is a three-dimensional structural diagram of the deformation component in this invention;

[0023] Figure 5 This is a cross-sectional view of the gravity screening chamber in this invention.

[0024] Figure 6 This is a schematic diagram of the sieve plate assembly in this invention;

[0025] In the diagram: 1. Bearing frame; 2. Base; 3. Telescopic rod; 4. Support rod assembly; 5. Air pump; 6. Suction machine; 7. Gravity screening chamber; 8. Deformation assembly; 9. Plasma gas supply equipment; 41. First support rod; 42. Second support rod; 43. Screw; 44. Limiting slot; 71. Chamber body; 72. Feed inlet; 73. First discharge outlet; 74. Second discharge outlet; 75. Air inlet; 76. Filter screen; 77. Gas equalization chamber; 78. Air pipe; 79. Screen plate assembly; 791. Screen plate groove; 792. Air jet micro-hole seat; 793. Leveling screen plate; 794. Bearing plate; 7941. Protrusion; 7942. Support roller; 795. Micro vibrator; 81. Deformation plate; 82. Connecting plate; 83. Spring; 84. Connecting seat. Detailed Implementation

[0026] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms are interchangeable where appropriate; this is merely a way of distinguishing objects with the same attributes in the embodiments of this application. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, so that a process, method, system, product, or apparatus that comprises a series of elements is not necessarily limited to those elements, but may include other elements not explicitly listed or inherent to those processes, methods, products, or apparatuses.

[0027] Example: In this embodiment of the invention, please refer to... Figures 1-6 A gravity sorting device for seed cultivation of Leymus chinensis is provided, including a base 2 and a support frame 1 with one end hinged to the base 2. A gravity screening chamber 7 is connected to the support frame 1 through a deformation component 8. An eccentric drive mechanism is provided on the support frame 1 to drive the gravity screening chamber 7 to perform longitudinal reciprocating motion. The eccentric drive mechanism is an existing mechanism and will not be described in detail here.

[0028] A telescopic rod 3 is hinged between the support frame 1 and the base 2; the bottom of the gravity screening chamber 7 is connected to an air pump 5, and the top is connected to a suction machine 6. The suction machine 6 generates a stable negative pressure by evacuating air from the top, driving the airflow from bottom to top through the gravity screening chamber 7. The air pump 5 supplies air from the bottom, and the suction machine 6 evacuates air from the top, forming a vertical airflow field that promotes the stratification of sheepgrass seeds according to density; the side of the gravity screening chamber 7 is connected to a plasma gas supply device 9; a non-contact electrostatic field strength meter is installed inside the gravity screening chamber 7, and the longitudinal reciprocating motion frequency of the gravity screening chamber 7 and the start and stop of the plasma gas supply device 9 are adjusted according to the detection results.

[0029] The gravity screening chamber 7 includes a chamber body 71 and a screen plate assembly 79, which is detachably installed inside the chamber body 71. The screen plate assembly 79 is inclined, both longitudinally and laterally.

[0030] Lateral tilt angle of sieve plate assembly 79: The sieve plate assembly 79 is tilted laterally (X direction) from low end to high end, so that light seeds (or light impurities) slide to the low end under the action of gravity and finally fall into the light material outlet.

[0031] Longitudinal inclination angle of sieve plate assembly 79: The longitudinal (Y direction) inclination of sieve plate assembly 79 is from the feeding end to the discharge end, which pushes the heavy seeds to move to the upper end under the vibration of the sieve and enter the heavy material outlet.

[0032] Therefore, its working principle is as follows: Air pump 5 supplies air from the bottom of gravity screening chamber 7, and suction machine 6 draws air from the top, forming a stable vertical airflow from bottom to top. Due to density differences, the sheepgrass seeds in the airflow exhibit different trajectories. The seeds with the highest specific gravity are located at the bottom layer, directly contacting the screen plate assembly 79, and are thus longitudinally pushed upwards by the vibration of the screen plate assembly 79; the seeds with lower specific gravity are located at the top layer, not directly affected by the vibration of the screen plate assembly 79, and thus slide downwards under their own weight; all seeds simultaneously slide laterally downwards along the screen surface, falling into their respective discharge ports.

[0033] In addition, when the field strength increases (indicating reduced seed mobility or impurity accumulation), the longitudinal reciprocating motion frequency of the gravity screening chamber 7 is automatically increased to enhance the vibration screening effect; when the field strength exceeds the first threshold (indicating severe electrostatic adsorption), the plasma gas supply equipment 9 is activated to inject ionized gas into the chamber to neutralize static electricity and prevent seed agglomeration and blockage.

[0034] Among them, the telescopic rod 3 is the core component for adjusting the longitudinal tilt angle of the bearing frame 1. Its specific implementation can be as follows: hydraulic telescopic cylinder: the piston rod is pushed to extend and retract by hydraulic oil, with large output force and precise stroke control; pneumatic cylinder: driven by compressed air, with fast response speed and simple maintenance; electric push rod: motor-driven screw structure, with high precision and programmable control.

[0035] In this embodiment, the longitudinal reciprocating motion frequency of the gravity screening chamber 7 increases with the increase of the field strength detected by the non-contact electrostatic field strength meter; when the field strength is greater than the first threshold, the plasma gas supply device 9 is activated.

[0036] The range of the first threshold is 10kV / m-15kV / m.

[0037] In this embodiment, the gravity screening chamber 7 includes: a chamber body 71; a filter screen 76, which is detachably installed inside the chamber body 71; an air equalization chamber 77, which is fixedly installed inside the chamber body 71 and located above the filter screen 76; and a sieve plate assembly 79, which is connected inside the chamber body 71 and located above the air equalization chamber 77. The bottom of the air equalization chamber 77 has a slotted structure, and the top is sealed. The top is supplied with air to the sieve plate assembly 79 through multiple air pipes 78. An air equalization plate is provided inside the air equalization chamber 77.

[0038] Among them, filter 76, as the base layer of chamber 71, undertakes the task of preliminary screening and impurity interception, and can separate impurities in the air.

[0039] The air equalization chamber 77's internal air equalization plate divides the airflow into multiple steady streams, eliminating eddies and ensuring consistent upward airflow velocity. The pressurized airflow from the equalization chamber 77 is received through the air pipe 78, and combined with vibration, the seeds are stratified according to their specific gravity.

[0040] In this embodiment, the sieve plate assembly 79 includes: a plurality of spaced-apart sieve plate grooves 791, adjacent sieve plate grooves 791 being connected by elastic members; an air jet micro-orifice seat 792 is provided at the top opening of the sieve plate groove 791, and the bottom is connected to an air equalization chamber 77 via an air pipe 78. In addition, a micro vibrator 795 is provided at the bottom of each sieve plate groove 791; when a non-contact electrostatic field meter detects that the field strength is greater than a second threshold, the micro vibrator 795 is activated.

[0041] In implementation, a piezoelectric ceramic sheet (micro-vibrator 795) can be placed below the sieve plate assembly 79 to emit low-frequency mechanical waves (matching the inherent frequency of heavy seeds of Leymus chinensis), causing differentiated amplitudes between heavy seeds and light seeds or light impurities, thereby breaking the electrostatic adsorption bonds between particles through shear force. The second threshold is 20 kV / m.

[0042] In this embodiment, the tops of multiple jet micro-hole seats 792 are connected to a leveling mesh plate 793; the tops of the leveling mesh plate 793 are connected to a support plate 794.

[0043] In addition, the support plate 794 is integrally formed with multiple protrusions 7941; the space below the protrusions 7941 is supported by support rollers 7942.

[0044] The leveling plate 793 is used to further integrate the multiple jet micro-orifice seats 792 into a whole, ensuring the stability of its longitudinal movement.

[0045] In this embodiment, a first discharge port 73 and a second discharge port 74 are respectively provided on both sides of the silo body 71; a feed port 72 is provided on the top of the silo body 71; and an air inlet 75 connected to the air pump 5 is provided at the bottom of the silo body 71.

[0046] In this embodiment, the deformation component 8 includes: a connecting plate 82, the bottom of which is connected to a plurality of spaced deformation plates 81, the end of the deformation plate 81 away from the connecting plate 82 being connected to the bearing frame 1; a spring 83, which is connected to the top of the connecting plate 82; and a connecting seat 84, which is connected to the top of the spring 83 and connected to the gravity screening chamber 7.

[0047] When the eccentric drive mechanism drives the gravity screening chamber 7 to reciprocate longitudinally, the deformation plate 81 absorbs part of the impact force through elastic bending, while transferring the vibration energy to the gravity screening chamber 7 to ensure the required range of motion for sorting. The multiple deformation plates 81 are spaced apart, which avoids stress concentration, reduces the risk of single-point fatigue fracture, and extends the service life of the deformation plates 81.

[0048] The connecting plate 82 serves as the central connection point for the deformation plate 81, and is connected to the connecting seat 84 above by a spring 83. The spring 83 further absorbs the reaction force generated during the movement of the gravity screening chamber 7, reducing the deformation amplitude of the deformation plate 81 and preventing overload. The stiffness (elastic coefficient) of the spring 83 can affect the vibration frequency of the gravity screening chamber 7. When a change in field strength is detected by a non-contact electrostatic field strength meter, the screening efficiency can be indirectly adjusted by adjusting the preload of the spring 83 (e.g., by replacing it with a spring of different stiffness).

[0049] In this embodiment, the support rod assembly 4 includes: a first support rod 41 with one end hinged to the base 2; a second support rod 42 with one end hinged to the first support rod 41 and the other end hinged to the bearing frame 1, wherein the end of the second support rod 42 near the first support rod 41 is integrally formed with a limiting groove 44; and a screw 43 with one end hinged to the first support rod 41 and the other end limited in the limiting groove 44 by two sets of bolts.

[0050] The installation process includes the following steps:

[0051] Step 1: Loosen the two sets of bolts at the limiting slot 44 to release the screw 43 from fixation.

[0052] Step 2: Push or pull the screw 43 to make it slide within the limiting slot 44, thereby changing the angle between the first support rod 41 and the second support rod 42.

[0053] Step 3: When the load-bearing frame 1 reaches the target tilt angle, tighten the bolts and lock the position using the bolts and the slot.

[0054] By adjusting the length of the support rod assembly 4, the inclination of the bearing frame 1 is changed, thereby adjusting the vibration direction and seed flow speed of the gravity screening chamber 7. For example, increasing the inclination angle can accelerate seed flow, but the sorting accuracy and throughput must be balanced. Of course, this adjustment needs to be coordinated with the telescopic rod 3.

[0055] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A gravity sorting device for seed cultivation of Leymus chinensis, comprising a base (2) and a support frame (1) hinged at one end to the base (2), wherein a gravity screening chamber (7) is connected to the support frame (1) via a deformation component (8), and an eccentric drive mechanism is provided on the support frame (1) to drive the gravity screening chamber (7) to perform longitudinal reciprocating motion, and a telescopic rod (3) is hinged between the support frame (1) and the base (2); characterized in that, The bottom of the gravity screening chamber (7) is connected to an air pump (5), and the top is connected to a suction machine (6); the side of the gravity screening chamber (7) is connected to a plasma gas supply device (9); a non-contact electrostatic field strength meter is installed inside the gravity screening chamber (7), and the longitudinal reciprocating motion frequency of the gravity screening chamber (7) and the start and stop of the plasma gas supply device (9) are adjusted according to its detection results.

2. The apparatus according to claim 1, characterized in that, The frequency of longitudinal reciprocating motion of the gravity screening chamber (7) increases with the increase of the field strength detected by the non-contact electrostatic field strength meter; When the on-site strength exceeds the first threshold, the plasma gas supply equipment (9) is activated.

3. The apparatus according to claim 1, characterized in that, The gravity screening chamber (7) includes: a chamber body (71); A filter screen (76) is detachably installed inside the chamber (71); The equalization chamber (77) is fixedly installed inside the chamber body (71) and located above the filter screen (76); A sieve plate assembly (79) is connected inside the chamber (71) and located above the equalization chamber (77); The bottom of the equalization chamber (77) is a slotted structure, the top is sealed, and the top is supplied with air to the sieve plate assembly (79) through multiple air pipes (78). The equalization chamber (77) is equipped with an equalization plate inside.

4. The apparatus according to claim 3, characterized in that, The sieve plate assembly (79) includes: a plurality of sieve plate grooves (791) spaced apart, with adjacent sieve plate grooves (791) connected by elastic elements; A jet micro-hole seat (792) is provided at the top opening of the sieve plate groove (791), and the bottom is connected to the gas equalization chamber (77) through an air pipe (78).

5. The apparatus according to claim 4, characterized in that, A miniature vibrator (795) is installed at the bottom of each sieve plate groove (791); When the non-contact electrostatic field meter detects an electric field strength greater than the second threshold, the micro vibrator (795) is activated.

6. The apparatus according to claim 4, characterized in that, Multiple jet micro-hole seats (792) are connected together at the top to a leveling mesh plate (793); The top of the leveling mesh plate (793) is connected to the bearing plate (794).

7. The apparatus according to claim 6, characterized in that, The support plate (794) is integrally formed with multiple protrusions (7941). The space below the protrusion (7941) is supported by the support roller (7942).

8. The apparatus according to claim 1, characterized in that, The first discharge port (73) and the second discharge port (74) are respectively provided on both sides of the silo body (71); The top of the silo body (71) is provided with a feed inlet (72); An air inlet (75) for connecting an air pump (5) is provided at the bottom of the chamber (71).

9. The apparatus according to claim 1, characterized in that, The deformation assembly (8) includes: a connecting plate (82) with a plurality of spaced deformation plates (81) connected to its bottom, and the end of the deformation plate (81) away from the connecting plate (82) is connected to the support frame (1); Spring (83), which is connected to the top of connecting plate (82); The connecting seat (84) is connected above the spring (83) and connected to the gravity screening chamber (7).

10. The apparatus according to claim 1, characterized in that, The support rod assembly (4) includes: a first support rod (41) with one end hinged to the base (2); A second support rod (42) is hinged at one end to the first support rod (41) and at the other end to the bearing frame (1). The end of the second support rod (42) close to the first support rod (41) is integrally formed into a limiting groove (44). A screw (43) with one end hinged to the first support rod (41) and the other end limited to the limiting slot (44) by two sets of bolts.

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