Light small-particle seed screening machine

Abstract

The invention discloses a light small-particle seed screening machine, and relates to the technical field of seed screening equipment. The present invention comprises: a housing; the first-stage vibrating screen is installed at the feeding port, and the aperture of screen holes of the first-stage vibrating screen is larger than the diameter of the seeds; the second-stage vibration conveying screen is installed on the inner wall of the machine shell corresponding to the lower portion of the first-stage vibration screen, the feeding end of the second-stage vibration conveying screen corresponds to the discharging end of the first-stage vibration screen, the discharging end of the second-stage vibration conveying screen inclines downwards and is communicated with the discharging port, and the hole diameter of screen holes of the second-stage vibration conveying screen is smaller than the diameter of the seeds; and the electrostatic dust collector is arranged corresponding to the upper part of the secondary vibration conveying screen and is mounted on the inner wall of the other side end of the machine shell. By means of multi-stage screening and the electrostatic dust collector, various impurities such as large bran, small bran and fine soil mixed in the seeds can be more sufficiently screened out, screening is thorough, and cleaner small-particle seeds are obtained.

Description

Technical Field

[0001] The invention relates to the technical field of seed screening equipment, and more particularly to a light small-particle seed screening machine. Background Art

[0002] The seeds of most herbs and medicinal plants are small. For example, the seeds of Rhodiola rosea are banana-shaped, 1.12-1.86mm long, 0.16-0.48mm wide, with light brown or dark brown seed coats, multiple longitudinal strip-like protrusions on the surface, and thicker edges on both sides of the seeds. Usually, after the seeds are harvested, they are mixed with a lot of seed coats, dried petals, pedicels and other impurities, so they need to be separated by screening.

[0003] At present, most seed separation technologies are suitable for large seeds or seeds of a certain weight, and there is a gap in the separation of small seeds. Small seeds with small particles and light weight are difficult to distinguish among numerous impurities, and cannot be separated by traditional winnowing and existing screening equipment. It is impossible to select seeds with higher purity, which restricts the next step of determining the germination rate, thousand-grain weight, etc., and it is impossible to grasp the exact number of seeds and calculate the sowing amount, which brings trouble to the commercial trading of small seeds.

[0004] Therefore, there is an urgent need for a device that can separate small-particle seeds quickly from impurities. Summary of the invention

[0005] In view of this, the present invention aims to provide a light-weight small-particle seed screening machine to at least to some extent solve the technical problem in the prior art that light-weight small-particle seeds are difficult to separate and cannot be accurately screened.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A light small particle seed screening machine, comprising:

[0008] A casing, wherein the casing has two oppositely arranged ends, a material inlet is provided at the top of one end, and a material outlet is provided on the lower side wall;

[0009] A primary vibration screen, the primary vibration screen is installed at the feed inlet, and the screen hole diameter of the primary vibration screen is larger than the diameter of the seeds;

[0010] A secondary vibrating conveying screen, the secondary vibrating conveying screen is installed on the inner wall of the casing below the primary vibrating screen, the feeding end of the secondary vibrating conveying screen corresponds to the discharging end of the primary vibrating screen, the discharging end is inclined downward and connected to the discharging port, and the sieve hole diameter of the secondary vibrating conveying screen is smaller than the diameter of the seeds;

[0011] A dust collecting pan, wherein a dust collecting pan installation opening is provided at the lower portion of the housing, and the dust collecting pan passes through the dust collecting pan installation opening and extends to below the secondary vibrating conveying screen;

[0012] An electrostatic dust collector is arranged above the secondary vibrating conveying screen and installed on the inner wall of the other side end of the casing.

[0013] The beneficial effects that can be achieved by the present invention are as follows: larger impurities are screened out through the first-level vibration screen, small-particle seeds and smaller impurities fall on the second-level vibration conveying screen, the second-level vibration conveying screen screens out small impurities such as dust and drops them into the dust collecting tray, and when the small-particle seeds and a few impurities such as seed coats that are equivalent in size to the small-particle seeds are transported to the bottom of the electrostatic dust collector with the second-level vibration conveying screen, the lighter impurities such as seed coats are adsorbed by the electrostatic dust collector, and the small-particle seeds are transported to the discharge port with the second-level vibration conveying screen, thereby completing the fine screening of small seeds and obtaining cleaner seeds.

[0014] Preferably, the electrostatic dust collector includes a fixed frame and an electrostatic dust rod, the fixed frame is installed on the inner wall of the other side end of the casing, the electrostatic dust rod is arranged parallel to the secondary vibrating conveying screen and is installed at the bottom of the fixed frame corresponding to the secondary vibrating conveying screen, the electrostatic dust rod has a first end and a second end arranged opposite to each other, the first end is arranged corresponding to the feed port, the second end is arranged corresponding to the discharge port and the first end is higher than the second end.

[0015] Preferably, a dust removal mechanism with a dust suction rod is also provided, which includes an annular electric slide rail, a slider, a bracket and a wiping strip, the annular electric slide rail is installed on the top inner wall of the casing corresponding to the electrostatic dust suction rod, the slider is slidably connected to the annular electric slide rail from the first end to the second end, the bracket is fixed on the slider and its bottom end extends to below the electrostatic dust suction rod, the wiping strip is installed at the lower end of the bracket and the wiping surface at the top corresponds to the adsorption surface at the bottom of the electrostatic dust suction rod.

[0016] Preferably, the bracket includes an elastic telescopic support rod and a wiping strip mounting bracket, the top of the elastic telescopic support rod is connected to the bottom of the slider, the wiping strip mounting bracket is connected to the bottom of the elastic telescopic support rod, and is provided with a dust collection rod through-hole passing through the axial direction of the electrostatic dust collection rod, and the wiping strip is mounted on the inner bottom wall of the dust collection rod through-hole.

[0017] Preferably, the elastic telescopic support rod includes a fixed rod, a spring and a sliding rod, the top of the fixed rod is fixed on the sliding block, and the bottom is provided with a slot arranged along its axial direction, the spring is placed in the slot, the upper end of the sliding rod is slidably connected in the slot and its top surface abuts against the bottom end of the spring, and the wiping strip mounting bracket is fixed to the lower end of the sliding rod.

[0018] Preferably, it also includes a wiping strip fastening assembly, which includes a locking bolt and a pressure block, and symmetrically arranged wiping strip through-holes connected to the vacuum rod through-hole are provided on both side walls of the wiping strip mounting frame, and the two ends of the wiping strip are respectively inserted into the two wiping strip through-holes; the pressure block is rotatably mounted on the locking bolt and its bottom end can be pressed on the top surface of the wiping strip and locked by the locking bolt.

[0019] Preferably, a dust collecting groove is further provided, and the dust collecting groove is installed at the bottom of the wiping strip mounting frame.

[0020] Preferably, the wiping strip humidifying assembly includes a nozzle mounting bracket and an atomizing nozzle. An avoidance hole is opened on the side wall of the wiping strip mounting bracket. One end of the nozzle mounting bracket is fixed to the inner wall of the casing, and the other end extends to the extension direction of the first end of the electrostatic dust suction rod and can pass through the avoidance hole corresponding to the top of the wiping strip. The atomizing nozzle is installed at the other end of the nozzle mounting bracket, and its spray port corresponds to the wiping surface at the top of the wiping strip.

[0021] Preferably, the wiping strip cleaning assembly includes a brush mounting bracket and a brush, one end of the brush mounting bracket is fixed to the inner wall of the casing, and the other end extends to the extension direction of the second end of the electrostatic dust suction rod and can pass through the avoidance hole corresponding to the top of the wiping strip, and the brush is installed at the other end of the brush mounting bracket, and the cleaning surface at its bottom can rub against the wiping surface at the top of the wiping strip.

[0022] Preferably, a drying device is installed on the inner wall of the casing.

[0023] It can be seen from the above technical scheme that compared with the prior art, the present invention discloses a lightweight small-particle seed screening machine, which can more fully screen out various impurities such as large bran, small bran and fine soil mixed in the seeds through multi-stage screening and electrostatic dust collector, and screen thoroughly to obtain cleaner small-particle seeds; the dust removal mechanism of the dust rod can clean the surface of the dust rod, ensure the adsorption capacity of the electrostatic dust rod, and ensure the screening efficiency and seed quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the three-dimensional structure of a lightweight small-particle seed screening machine provided by the present invention.

[0026] Figure 2 The present invention provides a schematic cross-sectional structure diagram of a lightweight small-particle seed screening machine.

[0027] Figure 3 for Figure 2 Schematic diagram of the AA cross-section structure.

[0028] Figure 4 The present invention provides a schematic diagram of a side cross-sectional structure of a lightweight small-particle seed screening machine.

[0029] Figure 5 This is a schematic diagram of the side structure of the bracket provided by the present invention.

[0030] Figure 6 This is a schematic diagram of the front cross-sectional structure of the bracket provided by the present invention.

[0031] In the figure: 1, casing, 11, feed port, 12, discharge port, 2, primary vibrating screen, 3, secondary vibrating conveying screen, 4, dust collecting tray, 41, handle, 5, electrostatic dust collector, 51, fixed frame, 52, electrostatic dust collecting rod, 6, dust collecting rod dust removal mechanism, 61, annular electric slide rail, 62, slider, 63, bracket, 631, elastic telescopic support rod, 6311, fixed rod, 6312, spring, 6313, sliding rod, 63 2. Wiping strip mounting bracket, 6321. Vacuum rod insertion opening, 6322. Wiping strip perforation, 6323. Avoidance opening, 64. Wiping strip, 65. Wiping strip fastening assembly, 651. Locking bolt, 652. Press block, 66. Dust collecting trough, 7. Wiping strip humidifying assembly, 71. Nozzle mounting bracket, 72. Atomizing nozzle, 8. Wiping strip cleaning assembly, 81. Brush mounting bracket, 82 Brush, 9. Drying device, 10. Seed collecting trough. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] See also Figure 1-Figure 6 The embodiment of the present invention discloses a light small particle seed screening machine, comprising:

[0036] The casing 1 has two oppositely arranged ends, a material inlet 11 is provided at the top of one end, and a material outlet 12 is provided on the lower side wall;

[0037] A primary vibration screen 2, the primary vibration screen 2 is installed at the feed inlet 11, and the aperture of the screen of the primary vibration screen 2 is larger than the diameter of the seeds;

[0038] The secondary vibration conveying screen 3 is installed on the inner wall of the casing 1 below the corresponding primary vibration screen 2, and its feeding end corresponds to the discharging end of the primary vibration screen 2, and the discharging end is inclined downward and connected to the discharging port 12, and the sieve hole diameter of the secondary vibration conveying screen 3 is smaller than the diameter of the seeds;

[0039] A dust collecting tray 4 is provided at the lower part of the housing 1 with a dust collecting tray installation opening, and the dust collecting tray 4 passes through the dust collecting tray installation opening and extends to below the secondary vibrating conveying screen 3;

[0040] The electrostatic dust collector 5 is arranged above the secondary vibrating conveying screen 3 and is installed on the inner wall of the other side end of the casing 1 .

[0041] When used for screening Rhodiola rosea seeds, the first-level vibration screen 2 uses a screen with a mesh of 0.3-0.5mm aperture to screen out large bran skins, leaving seeds, small bran skins and fine surface soil, and the second-level vibration screening uses a screen with a mesh of 0.15-0.2mm aperture to screen out seeds and small bran skins, and the fine surface soil and small bran skins fall into the dust collecting tray 4. The seeds and the small bran skins are trapped on the second-level vibration conveying screen 3 and then transported to the electrostatic dust collector 5. The lighter impurities such as small bran skins are adsorbed by the electrostatic dust collector 5, and the seeds continue to be transported to the discharge port 12 with the second-level vibration conveying screen 3, completing the fine screening of small-particle seeds, and obtaining cleaner seeds. In some other embodiments, according to the different sizes of the seed particles to be screened, a screen suitable for the mesh can be selected.

[0042] In a specific embodiment, the first-stage vibrating screen 2 includes a first vibration motor, a first screen and a plurality of first elastic buffers. The first screen is installed at the feed port of the casing 1 through a plurality of first elastic buffers arranged at circumferential intervals on the outer peripheral side of the feed port 11, and the first vibration motor is installed on the side wall of the first screen.

[0043] In a specific embodiment, a first lower hopper is further provided, which is fixed at the bottom of the first screen, and a discharge end thereof is connected to a feed end of the secondary vibrating conveying screen 3 .

[0044] In a specific embodiment, the secondary vibrating conveying screen 3 includes a second vibration motor, a second screen and a plurality of second elastic buffers. The second screen is installed on the inner wall of the casing 1 corresponding to the lower part of the first lower hopper through a plurality of second elastic buffers, and its feed end corresponds to the discharge end of the first lower hopper. The second vibration motor is installed on the side wall of the second screen.

[0045] In a specific embodiment, a second lower hopper (not shown in the figure) is further provided, which is fixed to the bottom of the second screen and whose discharge end is connected to the dust collecting tray 4.

[0046] In a specific embodiment, the shape of the second screen can be customized according to the size of the installation site. For example, the screen surface of the second screen can be straight or U-shaped. When the screen surface is straight, the discharge port 12 is opened on the side of the casing 1 away from the first-stage vibrating screen 2; when it is U-shaped, the discharge port 12 is set on the side of the casing 1 close to the first-stage vibrating screen 2.

[0047] In a specific embodiment, the electrostatic dust collector 5 includes a fixed frame 51 and an electrostatic dust rod 52. The fixed frame 51 is installed on the inner wall of the other side end of the casing 1. The electrostatic dust rod 52 is arranged parallel to the screen surface of the second screen and is installed at the bottom of the fixed frame 51 above the corresponding second screen. The electrostatic dust rod 52 has a first end and a second end arranged relatively, the first end is arranged corresponding to the feed port 11, and the second end is arranged corresponding to the discharge port 12, and the first end is higher than the second end.

[0048] In a specific embodiment, the electrostatic dust suction rod 52 is adapted to the screen surface of the second screen, and can be straight or U-shaped, and is arranged in parallel with the screen surface of the corresponding second screen, so that the distance between its adsorption surface and the screen surface of the corresponding second screen is the same. In order to ensure that the volume of the housing 1 is adapted to the site, the screen surface length of the secondary vibrating conveying screen 3 is extended, and the length of the electrostatic dust suction rod 52 is extended to fully screen out fine soil and adsorb small bran, so as to obtain clean small-grain seeds.

[0049] In a specific embodiment, the installation distance between the electrostatic dust suction rod 52 and the second screen surface is in the range of 3-10 cm, and the static voltage of the electrostatic dust suction rod 52 is in the range of 500 volts to 50,000 volts.

[0050] The electrostatic dust collector 52 can adopt an intermittent electrostatic generator or a continuous electrostatic generator, which is connected to a power line and a ground line. The power line is connected to the power supply to generate static electricity, and the static electricity is discharged through the ground line to prevent excessive accumulation of static electricity on the shell or leakage of the equipment, which may cause safety accidents.

[0051] In a specific embodiment, a dust collecting rod dust removal mechanism 6 is also provided, and the dust collecting rod dust removal mechanism 6 includes an annular electric slide rail 61, a slider 62, a bracket 63 and a wiping strip 64. The annular electric slide rail 61 is installed on the top inner wall of the housing 1 above the corresponding electrostatic dust collecting rod 52, the slider 62 is slidably connected to the annular electric slide rail 61, the bracket 63 is fixed on the slider 62 and its bottom end extends to the bottom of the electrostatic dust collecting rod 52, and the wiping strip 64 is installed at the bottom of the bracket 63 and its top wiping surface corresponds to the adsorption surface at the bottom of the electrostatic dust collecting rod. The wiping strip 64 can move under the drive of the annular electric slide rail 61 to wipe the impurities adsorbed at the bottom of the electrostatic dust collecting rod.

[0052] In a specific embodiment, the bracket 63 includes an elastic telescopic support rod 631 and a wiping strip mounting bracket 632. The top of the elastic telescopic support rod is connected to the bottom of the slider 62, and the wiping strip mounting bracket 632 is connected to the bottom of the elastic telescopic support rod 631. A dust collection rod through-hole 6321 is provided at the corresponding electrostatic dust collection rod 52 along the axial direction of the electrostatic dust collection rod 52, and the wiping strip 64 is installed on the inner bottom wall of the dust collection rod through-hole 6321.

[0053] In a specific embodiment, the elastic telescopic support rod 631 includes a fixed rod 6311, a spring 6312 and a sliding rod 6313. The top of the fixed rod 6311 is fixed on the slider 62, and a slot arranged along its axial direction is provided at the bottom. The spring 6312 is placed in the slot. The upper end of the sliding rod 6313 is slidably connected in the slot and its top surface abuts against the bottom end of the spring 6312. The wiping strip mounting frame 632 is fixed to the lower end of the sliding rod 6313. When the spring 6312 is in a natural state, the wiping strip 64 can abut against the bottom surface of the electrostatic dust suction rod 52 at the higher end. As the slider 62 slides, under the pressure of the electrostatic dust suction rod 52, the spring 6312 gradually stretches and ensures close contact with the bottom surface of the electrostatic dust suction rod 52 for wiping.

[0054] In a specific embodiment, a wiping strip fastening assembly 65 is also included. The wiping strip fastening assembly 65 includes a locking bolt 651 and a pressing block 652. The two side walls of the wiping strip mounting frame 632 are symmetrically provided with wiping strip through holes 6322 connected to the dust suction rod through hole 6321, and a mounting groove connected to the wiping strip through hole 6322 is provided above the corresponding wiping strip through hole 6322. The two ends of the wiping strip 64 are respectively provided in the two wiping strip through holes 6322. The pressing block 652 is fixed in the mounting groove by the locking bolt 651, and its bottom end can be pressed on the top surface of the wiping strip 64 to fix the wiping strip 64. The pressing surface of the pressing block 652 is an arc surface to avoid damaging the wiping strip 64. The pressing block 652 is provided with a long strip adjustment hole arranged along the height direction of the wiping strip mounting frame 632. The locking bolt 651 passes through the long strip adjustment hole and is threadedly connected in the mounting groove, which can be suitable for wiping strips 64 of different thicknesses. The wiping strip fastening assembly 65 may be provided in multiple groups so that the wiping strip 64 can be laid flat on the wiping strip mounting frame 632 .

[0055] In a specific embodiment, a dust collecting groove 66 is further provided. The dust collecting groove 66 is installed below the wiping strip mounting bracket 632. Limit pins 67 are symmetrically installed on the lower part of the two side walls of the wiping strip mounting bracket 632. U-shaped holes are symmetrically opened on the two side walls of the dust collecting groove 66, and one end of the U-shaped hole passes through the top wall to form an opening. The limit pin 67 can slide from the opening end of the U-shaped hole to the other end and be clamped therewith. The dust collecting groove 66 is used to collect impurities dropped by the electrostatic dust suction rod 52 during cleaning to prevent the impurities from falling back onto the second screen.

[0056] In a specific embodiment, the wiping strip 64 is made of disposable wet wipes, which can be directly replaced with new wet wipes after being dirty. In some other embodiments, the wiping strip 64 is made of reusable cotton cloth, suede or high-density sponge, etc., which can be washed and then used again, which is more environmentally friendly.

[0057] In a specific embodiment, a wiping strip humidifying assembly 7 is further provided, and the humidifying assembly includes a nozzle mounting frame 71 and an atomizing nozzle 72. A sidewall of the wiping strip mounting frame 632 is provided with an escape hole 6323. One end of the nozzle mounting frame 71 is fixed to the inner wall of the housing 1, and the other end extends to the extension direction of the first end of the electrostatic dust collecting rod 52 and can pass through the escape hole 6323 corresponding to the top of the wiping strip 64. The atomizing nozzle 72 is installed at the other end of the nozzle mounting frame 71, and its spray port corresponds to the wiping surface at the top of the wiping strip 64. The atomizing nozzle 72 is connected to an external water supply device through a water pipe.

[0058] The wiping strip 64 may be soaked in advance before installation to prevent water from evaporating too quickly. When the wiping strip is not wet enough during use, the fine water mist sprayed by the humidifying component can be used to ensure the wetness of the surface of the wiping strip 64.

[0059] In a specific embodiment, a wiping strip cleaning assembly 8 is also provided, and the wiping strip cleaning assembly 8 includes a brush mounting frame 81 and a brush 82. One end of the brush mounting frame 81 is fixed to the inner wall of the casing 1, and the other end extends to the extension direction of the second end of the electrostatic dust suction rod 52 and can pass through the avoidance hole 6323 corresponding to the top of the wiping strip 64. The brush 82 is installed at the other end of the brush mounting frame 81, and the cleaning surface at its bottom can rub against the wiping surface at the top of the wiping strip 64, so as to clean the small chaff adhering to the surface of the wiping strip 64.

[0060] The brush mounting bracket 81 and the nozzle mounting bracket 71 have the same height, and both can pass through the avoidance hole 6323 under the natural length of the spring 6312, and there is a sliding gap between the brush mounting bracket 81 and the inner wall of the avoidance hole 6323. When the brush 82 is sweeping the small bran on the wiping strip 64, the wiping strip mounting bracket 632 will not move vertically, preventing the brush 82 from failing to sweep the wiping surface of the wiping strip 64.

[0061] In a specific embodiment, a drying device 9 is installed on the inner wall of the housing 1, and the drying device is used to bake, dry the wiping strip 64 and the electrostatic adsorption environment in the housing, and maintain the electrostatic adsorption effect. The drying device can be an incandescent lamp, an ultraviolet lamp, or a bathroom lamp. Preferably, an ultraviolet lamp can be used. The ultraviolet lamp 9 can be used for disinfection, sterilization, and drying before and after using the machine. The ultraviolet lamp 9 should be turned on for at least 20 minutes for disinfection and sterilization.

[0062] In a specific embodiment, a handle is installed on the dust collecting tray 4 to facilitate pulling out the dust collecting tray 4 for cleaning.

[0063] In a specific embodiment, a seed collecting groove 10 is installed on the outer wall of the casing 1 corresponding to the discharge port 12 for collecting the small-particle seeds screened out.

[0064] The use method of the small particle seed screening machine provided by the present invention is as follows:

[0065] The seeds to be screened are poured onto the first sieve. After screening, large chaff and other impurities are retained on the first sieve, and the seeds, small impurities, fine soil, etc. fall into the second sieve. After screening by the second sieve, fine impurities such as fine soil fall into the dust collecting tray 4, and the seeds and small chaff and other impurities are retained on the second sieve and transported to the discharge port 12 under the action of gravity. During the transportation process, when passing under the electrostatic dust collector 5, the lighter small chaff and the like are adsorbed by the electrostatic dust collector 5, and the seeds are discharged from the discharge port 12 to obtain clean small-particle seeds.

[0066] The electrostatic vacuum cleaner 5 adsorbs a lot of impurities. When cleaning is required, the electric slide rail is started and the wet wiping strip 64 is used to clean the impurities adsorbed on the bottom of the electrostatic vacuum cleaner 5. During the cleaning process, some impurities remain on the wiping strip 64, and some are pushed into the dust collecting tank 66; the electrostatic vacuum cleaner 5 after wiping is dried by the drying device 9, and the wiping strip 64 continues to rotate to the wiping strip cleaning component 8, and is brushed by the brush 82 to sweep the impurities on the surface into the dust collecting tank 66. After cleaning, an appropriate amount of water mist is sprayed on the surface of the wiping strip 64 through the atomizing nozzle 72 to ensure the wetness of the wiping strip 64 for the next cleaning.

[0067] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0068] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A light small particle seed screening machine, characterized in that: include: A casing (1), the casing (1) having two oppositely arranged ends, a material inlet (11) being provided at the top of one end, and a material outlet (12) being provided on the lower side wall; A primary vibration screen (2), the primary vibration screen (2) being installed at the feed inlet (11), and the aperture of the screen holes of the primary vibration screen (2) being larger than the diameter of the seeds; A secondary vibrating conveying screen (3), the secondary vibrating conveying screen (3) being mounted on the inner wall of the casing (1) below the primary vibrating screen (2), the feeding end of the secondary vibrating conveying screen (3) corresponding to the discharging end of the primary vibrating screen (2), the discharging end of the secondary vibrating conveying screen (3) being inclined downward and connected to the discharging port (12), the sieve hole diameter of the secondary vibrating conveying screen (3) being smaller than the diameter of the seeds; A dust collecting pan (4), wherein a dust collecting pan installation opening is provided at the lower part of the housing (1), and the dust collecting pan (4) passes through the dust collecting pan installation opening and extends to below the secondary vibrating conveying screen (3); An electrostatic dust collector (5), the electrostatic dust collector (5) is arranged above the secondary vibrating conveying screen (3) and is installed on the inner wall of the other side end of the casing (1).

2. A light small particle seed screening machine according to claim 1, characterized in that: The electrostatic dust collector (5) comprises a fixing frame (51) and an electrostatic dust collecting rod (52); the fixing frame (51) is mounted on the inner wall of the other side end of the housing (1); the electrostatic dust collecting rod (52) is arranged in parallel with the secondary vibrating conveying screen (3) and is mounted on the bottom of the fixing frame (51) above the secondary vibrating conveying screen (3); the electrostatic dust collecting rod (52) has a first end and a second end which are arranged opposite to each other; the first end is arranged corresponding to the material inlet (11), and the second end is arranged corresponding to the material outlet (12), and the first end is higher than the second end.

3. A light small particle seed screening machine according to claim 2, characterized in that: A dust collecting rod dust removing mechanism (6) is also provided, and the dust collecting rod dust removing mechanism (6) comprises an annular electric slide rail (61), a slider (62), a bracket (63) and a wiping strip (64), wherein the annular electric slide rail (61) is mounted on the top inner wall of the housing (1) corresponding to the top of the electrostatic dust collecting rod (52), the slider (62) is slidably connected to the annular electric slide rail (61), the bracket (63) is fixed on the slider (62) and its bottom end extends to the bottom of the electrostatic dust collecting rod (52), and the wiping strip (64) is mounted on the lower end of the bracket (63) and its top wiping surface corresponds to the adsorption surface at the bottom of the electrostatic dust collecting rod (52).

4. A light small particle seed screening machine according to claim 3, characterized in that: The bracket (63) comprises an elastic telescopic support rod (631) and a wiping strip mounting frame (632); the top of the elastic telescopic support rod is connected to the bottom of the slider (62); the wiping strip mounting frame (632) is connected to the bottom of the elastic telescopic support rod (631); and a dust collection rod through-hole (6321) penetrating along the axial direction of the electrostatic dust collection rod (52) is provided at a position corresponding to the electrostatic dust collection rod (52); the wiping strip (64) is mounted on the inner bottom wall of the dust collection rod through-hole (6321).

5. A light small particle seed screening machine according to claim 4, characterized in that: The elastic telescopic support rod (631) includes a fixed rod (6311), a spring (6312) and a sliding rod (6313); the top of the fixed rod (6311) is fixed on the sliding block (62); the bottom is provided with a slot arranged along its axial direction; the spring (6312) is placed in the slot; the upper end of the sliding rod (6313) is slidably connected in the slot and its top surface abuts against the bottom end of the spring (6312); the wiping strip mounting frame (632) is fixed to the lower end of the sliding rod (6313).

6. A light small particle seed screening machine according to claim 5, characterized in that: It also includes a wiping strip fastening assembly (65), the wiping strip fastening assembly (65) includes a locking bolt (651) and a pressure block (652), and the two side walls of the wiping strip mounting frame (632) are symmetrically provided with wiping strip through holes (6322) connected to the suction rod through hole (6321), and the two ends of the wiping strip (64) are respectively inserted into the two wiping strip through holes (6322); the pressure block (652) is fixed to the outer wall of the wiping strip mounting frame (632) by the locking bolt (651), and its bottom end can be pressed onto the top surface of the wiping strip (64).

7. A light small particle seed screening machine according to claim 4, characterized in that: A dust collecting groove (66) is also provided, and the dust collecting groove (66) is installed at the bottom of the wiping strip mounting frame (632).

8. A light small particle seed screening machine according to claim 4, characterized in that: A wiping strip humidifying assembly (7) is also provided, the wiping strip humidifying assembly (7) comprising a nozzle mounting frame (71) and an atomizing nozzle (72), a side wall of the wiping strip mounting frame (632) is provided with an avoidance hole (6323), one end of the nozzle mounting frame (71) is fixed to the inner wall of the housing (1), and the other end extends to the extension direction of the first end of the electrostatic dust suction rod (52) and can pass through the avoidance hole (6323) corresponding to the top of the wiping strip (64), the atomizing nozzle (72) is installed at the other end of the nozzle mounting frame (71), and its spray port corresponds to the wiping surface at the top of the wiping strip (64).

9. A light small particle seed screening machine according to claim 8, characterized in that: A wiping strip cleaning component (8) is also provided, the wiping strip cleaning component (8) comprising a brush mounting frame (81) and a brush (82), one end of the brush mounting frame (81) is fixed to the inner wall of the housing (1), and the other end extends to the extension direction of the second end of the electrostatic dust suction rod (52) and can pass through the avoidance hole (6323) corresponding to the top of the wiping strip (64), the brush (82) is mounted on the other end of the brush mounting frame (81), and the cleaning surface at the bottom thereof can rub against the wiping surface at the top of the wiping strip (64).

10. A light small particle seed screening machine according to any one of claims 1 to 9, characterized in that: A drying device (9) is installed on the inner wall of the casing (1).

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