CN214865259U - Agricultural seed sieving mechanism - Google Patents

Abstract

The utility model discloses an agricultural seed screening device, which comprises an air screen box, wherein the upper surface penetrating through the outer part of the air screen box is provided with a feed inlet, one side wall penetrating through the air screen box is provided with an opening, the inside of the opening is provided with an air grid, a first shell is buckled on one side wall outside the air screen box, the blower is arranged in the first shell and is positioned at one side of the air grid, the electromagnetic valve is arranged to control whether the water source in the dedusting water pool is discharged or not by the drainage pipeline, the setting of air exhauster can be convenient for make inside impurity of pipeline and dust, along with the inside of pipeline of discharging together of the inside air of pipeline for the discharge rate of impurity and dust, reinforcing means's result of use, the utility model discloses simple structure, convenient operation, the practicality is strong, and is with low costs, can use widely.

Description

Agricultural seed sieving mechanism

Technical Field

The utility model relates to a sieving mechanism technical field, concrete field is an agricultural seed sieving mechanism.

Background

In the processing process of seeds, the seeds are classified into seeds with different sizes and different particle sizes through screening and impurity removal, the seeds are screened mainly through a flotation method and a wind selection method in the prior art, the flotation method is to utilize buoyancy of water to carry out layered screening on the seeds with different densities, the method is to immerse the seeds into water, steps such as drying and the like are often needed after screening is completed, the processing time is prolonged, the operation is inconvenient, the wind selection method is to blow the seeds by utilizing wind, lighter scraps in the seeds are blown away by utilizing wind power, heavier seeds are reserved to realize screening, but the existing seed winnowing equipment is poor in capability of removing fine impurities and scraps, particularly when impurities adsorbed on the surfaces of the seeds are more, the effect is worse, and the qualified level can be achieved by repeatedly winnowing, therefore, an agricultural seed screening device is provided, to solve the problems posed in the above-mentioned technology.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an agricultural seed sieving mechanism to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an agricultural seed screening device comprises an air screen box, wherein a feed inlet is formed in the upper surface of the outer portion of the air screen box in a penetrating mode, an opening is formed in one side wall of the air screen box in a penetrating mode, an air grid is arranged in the opening, a first shell is arranged on the side wall of the outer portion of the air screen box in a buckling mode, a blower is arranged in the first shell, the blower is located on one side of the air grid, an air pipeline is arranged on the other side wall of the outer portion of the air screen box in a round platform shape, the large-size end of the air pipeline is communicated with the inside of the air screen box, a conveying pipeline is arranged at the small-size end of the air pipeline, the conveying pipeline is in an inverted L shape, a filter screen is arranged on one end face of the conveying pipeline and the inside of the small-size end connecting portion of the air pipeline, the first shell, the blower, the air grid and the air pipeline are located in the same horizontal direction, the lower surface of the wind screen box is provided with a vibrating screen box, the bottom surface in the vibrating screen box is symmetrically provided with mounting seats, two mounting seats are respectively provided with an elastic element, one end of each elastic element is provided with a bottom plate, a material guide plate is obliquely arranged above the bottom plate, a first screen plate is obliquely arranged above the material guide plate, a second screen plate is obliquely arranged above the first screen plate, the first screen plate and the second screen plate are respectively provided with a plurality of screen holes, the size of each screen hole of the first screen plate is smaller than that of the second screen hole, the front surface and the rear surface of the second screen plate, the first screen plate and the material guide plate are at least connected with two connecting rods, one end of each connecting rod is respectively connected with the upper surface of the bottom plate, a first discharge hole is formed in one side wall penetrating through the vibrating screen box, the first discharge hole is positioned below the second screen plate, and a second discharge hole is formed in one side wall penetrating through the vibrating screen box, and the second discharge port is positioned below the first sieve plate, a third discharge port is formed in one side wall penetrating through the vibrating sieve box, the third discharge port is positioned below the material guide plate, a vibrating motor is arranged on the bottom surface inside the vibrating sieve box, a cam is arranged at the output end of the vibrating motor, and the cam is attached to the lower surface of the bottom plate.

Preferably, a plurality of ribbons are arranged on the other side wall of the air grid, and the ribbons are uniformly distributed on the other side wall of the air grid.

Preferably, the width of the air screen box is smaller than the width of the vibrating screen box.

Preferably, the lower surface outside the vibrating screen box is uniformly provided with four first supporting rods, one ends of the four first supporting rods are respectively provided with a first supporting seat, and the front surface outside the wind screen box is provided with a first observation window.

Preferably, the opposite side that shakes the sieve case outside is equipped with the dust removal pond, the outside front surface in dust removal pond is equipped with observation window two, the inside packing in dust removal pond has the water source, pipeline's another terminal surface is located the inside in dust removal pond, just pipeline's another terminal surface is located the top at water source, the inside of pipeline another terminal surface is equipped with the air exhauster, runs through the inside bottom surface in dust removal pond is equipped with drainage pipe, is located the dust removal pond is outside be equipped with the solenoid valve on the drainage pipe, the outside lower surface in dust removal pond evenly is equipped with four bracing pieces two, four the one end of bracing piece two is equipped with supporting seat two respectively.

Preferably, a guide plate matched with the drainage pipeline is arranged on the bottom surface inside the dust removal water tank.

Preferably, the blower, the vibration motor, the exhaust fan and the electromagnetic valve are respectively electrically connected with a power supply.

Compared with the prior art, the beneficial effects of the utility model are that: an agricultural seed screening device is provided, wherein a blower is arranged at one side of a wind grating and can blow falling material seeds, the impurity removal effect of the material seeds is improved, the blower can be protected, the seeds are prevented from falling into the blower and the blower is prevented from being damaged, a blower can be conveniently installed by arranging a first shell, the wind grating is convenient for the blower to blow the falling material seeds in a wind grating box for impurity removal, and is convenient for a silk ribbon to be installed for enhancing the impurity removal effect of the material seeds, the blower drives the silk ribbon to float, the silk ribbon beats the material seeds, a phenomenon that part of the material seeds are brought into an air pipeline can occur in the beating process, therefore, the filter screen can filter the seeds under the matching use of the filter screen and a circular truncated cone-shaped air pipeline, the utility model discloses a seed screening device, which avoids the seed to leave the inside of the air duct, dust and impurity are discharged from the air duct to the inside of the conveying duct through the filter screen, because the air duct is round platform-shaped, the seed detained in the air duct can slide back to the inside of the air screen box along the side wall of the air duct again, and the seed can still drop to the upper surface of the second screen plate through the air screen box, avoids the loss of material seed, enhances the use effect of the device, the setting of the mounting seat can facilitate the installation of the elastic element, the elastic element is a spring, the utility model uses the spring, but not only is limited to the spring, because the effect of the spring used by the utility model is better, the utility model uses the spring, the first screen plate, the second screen plate and the guide plate are arranged in an inclined way, the second screen plate can screen and discharge the material seed, and the second screen and the first discharge port can screen and discharge the soil or stone mixed in the material seed, the first sieve plate is matched with the second discharge port to sieve and discharge seeds with larger sizes in the material seeds, the third guide plate is matched with the third discharge port to discharge seeds with smaller sizes in the material seeds, when the vibrating motor rotates, the vibrating motor drives the cam to rotate, the cam rotates and enables the bottom plate to move up and down, the spring has elastic potential energy, so the vibrating motor can drive the bottom plate to move, the bottom plate drives the connecting rod to move, the connecting rod drives the first sieve plate, the second sieve plate and the guide plate to move, the first sieve plate, the second sieve plate and the guide plate have a vibrating function, the sieving effect of the first sieve plate and the second sieve plate can be enhanced through the vibrating function, the discharging effect of the first sieve plate, the second sieve plate and the guide plate can be enhanced, the impurity removing effect of the device on the seeds can be improved through the arrangement of a plurality of the silk ribbons, and when the hair drier works, the silk ribbons are blown by the hair drier to move along with the wind, continuously beating the seeds falling from the feed inlet to the inside of the air screen box, so that the impurities adhered to the seeds are quickly beaten, the impurity removal effect is greatly improved, the dust removal water tank is convenient to remove dust, the conveying pipeline discharges the impurities and the dust to the inside of the dust removal water tank, the dust and the impurities fall into a water source inside the dust removal water tank and are removed by washing, the conveying pipeline and the exhaust fan are matched for use, so that the dust and the impurities can be conveniently conveyed to the inside of the dust removal water tank, the four supporting rods II and the four supporting seats II are matched for use, so that the dust removal water tank can be conveniently supported and fixed, the placing of the dust removal water tank is convenient, the electromagnetic valve can be convenient for controlling whether the drainage pipeline discharges the water source inside the dust removal water tank, and the exhaust fan can be convenient for discharging the impurities and the dust inside the conveying pipeline, along with the inside of pipeline of discharging together of pipeline inside air for the discharge rate of impurity and dust, reinforcing means's result of use, the utility model discloses simple structure, convenient operation, the practicality is strong, and is with low costs, can use widely.

Drawings

Fig. 1 is a schematic front structural view of the present invention;

FIG. 2 is a schematic sectional view of the front structure of the present invention;

fig. 3 is a schematic view of a plane of depression structure of the first sieve plate of the present invention;

fig. 4 is a schematic view of a plane of depression structure of the first sieve plate of the present invention.

In the figure: 1-air screen box, 2-feeding hole, 3-opening, 4-air grille, 5-shell I, 6-blower, 7-air pipeline, 8-conveying pipeline, 9-filter screen, 10-elastic element, 11-bottom plate, 12-guide plate, 13-sieve plate I, 14-sieve plate II, 15-guide plate, 16-connecting rod, 17-discharge hole I, 18-discharge hole II, 19-discharge hole III, 20-vibrating motor, 21-cam, 22-vibrating screen box, 23-ribbon, 24-supporting rod I, 25-supporting seat I, 26-observation window I, 27-dedusting water pool, 28-observation window II, 29-water source, 30-exhaust fan, 31-drainage pipeline, 32-electromagnetic valve, 33-a second support rod, 34-a second support seat and 35-an installation seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an agricultural seed screening device comprises an air screen box 1, wherein a feed inlet 2 is formed in the upper surface penetrating through the outer portion of the air screen box 1, material seeds can be conveniently added into the air screen box 1 through the feed inlet 2, an opening 3 is formed in one side wall penetrating through the air screen box 1, an air grid 4 is arranged inside the opening 3, a shell I5 is buckled on one side wall of the outer portion of the air screen box 1, a blower 6 is arranged inside the shell I5, the blower 6 is located on one side of the air grid 4, the blower 6 can blow falling material seeds, the impurity removal effect on the material seeds is improved, the blower 6 can be protected, the seeds are prevented from falling into the blower 6, the blower 6 is prevented from being damaged, the blower 6 can be conveniently installed through the shell I5, the air grid 4 is convenient to blow the falling material seeds in the air screen box 1 to remove impurities through the blower 6, secondly, be convenient for install the silk ribbon 23, the reinforcing is to the edulcoration effect of material seed, another lateral wall of wind sieve case 1 outside is equipped with wind pipeline 7, just wind pipeline 7 is round platform shape, the jumbo size end of wind pipeline 7 with the inside of wind sieve case 1 is linked together, the small-size end of wind pipeline 7 is equipped with pipeline 8, pipeline 8 is the shape of falling L, pipeline 8's a terminal surface with the inside of the small-size end junction of wind pipeline 7 is equipped with filter screen 9, shell one 5 the hair-dryer 6, the air grid 4 with wind pipeline 7 is located same horizontal direction, hair-dryer 6 drives silk ribbon 23 and flutters, and silk ribbon 23 beats the material seed, probably appears bringing partial material seed into the phenomenon of wind pipeline 7 in the process of patting, consequently, under the cooperation of filter screen 9 and round platform shape wind pipeline 7 is used, the seed can be filtered by the filter screen 9, the seed is prevented from being left in the air pipeline 7, dust and impurities can be discharged from the air pipeline 7 to the inside of the conveying pipeline 8 through the filter screen 9, the air pipeline 7 is in a round table shape, the seeds retained in the air pipeline 7 can slide back to the inside of the air screen box 1 along the side wall of the air pipeline 7, the seeds can still fall onto the upper surface of the second sieve plate 14 through the air screen box 1, the loss of the material seeds is avoided, the using effect of the device is enhanced, the lower surface of the air screen box 1 is provided with the vibrating screen box 22, the front surface outside the vibrating screen box 22 is provided with the control panel, the bottom surface inside the vibrating screen box 22 is symmetrically provided with the mounting seats 35, the two mounting seats 35 are respectively provided with the elastic elements 10, one ends of the two elastic elements 10 are provided with the bottom plate 11, the guide plate 12 is obliquely arranged above the bottom plate 11, the first sieve plate 13 is obliquely arranged above the guide plate 12, the top of the first sieve plate 13 is obliquely provided with a second sieve plate 14, the first sieve plate 13 and the second sieve plate 14 are respectively provided with a plurality of sieve holes, the sieve hole size of the first sieve plate 13 is smaller than that of the second sieve plate 14, the arrangement is convenient for sieving material seeds, the front and back surfaces of the second sieve plate 14, the first sieve plate 13 and the guide plate 12 are at least connected with two connecting rods 16, one ends of the connecting rods 16 are respectively connected with the upper surface of the bottom plate 11, a first discharge hole 17 is arranged on one side wall penetrating through the sieve box 22, the first discharge hole 17 is positioned below the second sieve plate 14, a second discharge hole 18 is arranged on one side wall penetrating through the sieve box 22, the second discharge hole 18 is positioned below the first sieve plate 13, a third discharge hole 19 is arranged on one side wall penetrating through the sieve box 22, and the third discharge hole 19 is positioned below the guide plate 12, the arrangement of the mounting seat 35 can facilitate the installation of the elastic element 10, the elastic element 10 is a spring, the spring is used in the utility model, but not limited to the spring, the spring has better effect because the utility model uses the spring, the first sieve plate 13, the second sieve plate 14 and the guide plate 12 are arranged in an inclined way to facilitate the sieving and discharging of the material seeds, the second sieve plate 14 can sieve and discharge the soil or stones mixed in the material seeds by matching with the first discharge port 17, the first sieve plate 13 can sieve and discharge the seeds with larger size in the material seeds by matching with the second discharge port 18, the guide plate 12 can discharge the seeds with smaller size in the material seeds by matching with the third discharge port 19, the bottom surface in the vibrating sieve box 22 is provided with the vibrating motor 20, the output end of the vibrating motor 20 is provided with the cam 21, cam 21 with the lower surface of bottom plate 11 is laminated mutually, when vibrating motor 20 rotates, vibrating motor 20 drives cam 21 and rotates, make bottom plate 11 be the up-and-down motion when cam 21 pivoted, have elastic potential energy because of the spring, so vibrating motor 20 can drive bottom plate 11 motion, bottom plate 11 drives connecting rod 16 motion, connecting rod 16 drives sieve one 13, two 14 and stock guide 12 motions of sieve, make sieve one 13, two 14 and stock guide 12 have the function of vibration, firstly strengthen the sieve material effect of sieve one 13 and two 14 sieve through the vibration function, secondly can strengthen the ejection of compact effect of sieve one 13, two 14 sieve and stock guide 12, the utility model discloses simple structure, convenient operation, the practicality is strong, and is with low costs, can use widely.

Particularly, be equipped with a plurality of ribbons 23 on another lateral wall of air grid 4, and a plurality of ribbon 23 evenly distributed is in on another lateral wall of air grid 4, it is a plurality of the edulcoration effect of device to the seed can be improved in setting up of ribbon 23, and when hair-dryer 6 during operation, hair-dryer 6 blows ribbon 23 and flutters along with the wind, constantly hits and drops to the inside seed of wind sieve case 1 from feed inlet 2 to with the quick bat of the impurity of adhesion on the seed, consequently very big improvement the effect of cleaing away of impurity.

Particularly, the width of wind sieve case 1 is less than the width of sieve case 22 that shakes, this setting can make the seed after the edulcoration directly drop to the upper surface of two 14 sieve plates, and the sieve case 22 inside sieve plate 14, sieve 13 and stock guide 12 of shaking of being convenient for carry out the secondary screening to the seed, and the seed after avoiding once the edulcoration drops to the inside of sieve case 22 that shakes, leads to the unable inside of discharging sieve case 22 that shakes of seed.

Particularly, the outside lower surface of sieve case 22 that shakes evenly is equipped with four bracing pieces 24, four the one end of bracing piece 24 is equipped with supporting seat 25 respectively, the outside front surface of wind sieve case 1 is equipped with observation window 26, four bracing piece 24 and four the cooperation of supporting seat 25 is used and can be convenient for support and fix wind sieve case 1 and sieve case 22 that shakes, is convenient for lay of wind sieve case 1 and sieve case 22 that shakes, the setting up of observation window 26 can be convenient for follow the outside and observe wind sieve case 1's inside.

Particularly, the outside opposite side of sieve case 22 that shakes is equipped with dust removal pond 27, the outside front surface in dust removal pond 27 is equipped with observation window two 28, the inside packing in dust removal pond 27 has water source 29, another terminal surface of pipeline 8 is located the inside in dust removal pond 27, and another terminal surface of pipeline is located the top in water source 29, the inside of another terminal surface of pipeline 8 is equipped with air exhauster 30, runs through the inside bottom surface in dust removal pond 27 is equipped with drainage pipe 31, is located the outside in dust removal pond 27 be equipped with solenoid valve 32 on the drainage pipe 31, the outside lower surface in dust removal pond 27 evenly is equipped with four bracing pieces two 33, four the one end of bracing piece two 33 is equipped with two 34 of supporting seat respectively, the setting in dust removal pond 27 can be convenient for remove dust, and pipeline 8 discharges impurity and dust to the inside in dust removal pond 27, dust and impurity drop to the inside water source 29 in dust removal pond 27, get rid of through the washing, pipeline 8 with the cooperation of air exhauster 30 is used, can be convenient for carry dust and impurity to the inside in dust removal pond 27, four bracing piece two 33 and four the cooperation of two 34 supporting seats is used and can be convenient for support and fix dust removal pond 27, and the laying of the pond 27 that removes dust of being convenient for, whether the setting of solenoid valve 32 can be convenient for control drainage pipe 31 discharges the inside water source 29 in dust removal pond 27, the setting of air exhauster 30 can be convenient for make inside impurity and the dust of pipeline 8, along with the inside air of pipeline 8 inside discharge pipeline 8 together for the discharge rate of impurity and dust, reinforcing means's result of use.

Particularly, the inside bottom surface in dust removal pond 27 is equipped with the matching guide plate 15 that drainage pipe 31 used, the effect of water conservancy diversion can be played in the setting of guide plate 15, is convenient for with the inside water source 29 in dust removal pond 27 through the water conservancy diversion of guide plate 15, through the inside in the whole discharge dust removal pond 27 of drainage pipe 31, avoids the inside bottom surface in dust removal pond 27 to appear remaining hydrops.

Particularly, the hair-dryer 6 the vibrating motor 20 the air exhauster 30 with the solenoid valve 32 respectively with control panel electric connection, control panel and power electric connection, this setting can be convenient for carry out centralized control to the device, the convenience of operation when reinforcing the device uses.

The working principle is as follows: when the utility model is used, the blower 6, the vibrating motor 20 and the exhaust fan 30 are operated by the control panel to work, the material seeds to be screened are poured from the feed inlet 2, when the blower 6 works, the blower 6 blows the ribbon 23 to wave with the wind, and the seeds falling from the feed inlet 2 to the interior of the wind screen box 1 are continuously hit, so that the impurities adhered on the seeds are quickly beaten down, heavier seeds, gravels and the like are less influenced by the ribbon 23 and directly fall onto the second sieve plate 14, and a phenomenon that part of the material seeds are brought into the wind pipeline 7 can occur in the beating process, therefore, under the matching use of the filter screen 9 and the circular table-shaped wind pipeline 7, the filter screen 9 can filter the seeds, the seeds are prevented from leaving the interior of the wind pipeline 7, dust and impurities are discharged from the wind pipeline 7 to the interior of the conveying pipeline 8 through the filter screen 9, because the wind pipeline 7 is circular table-shaped, seeds detained in the air pipeline 7 can slide back to the inside of the air sieve box 1 along the side wall of the air pipeline 7, the seeds can still fall onto the upper surface of the second sieve plate 14 through the air sieve box 1, the loss of material seeds is avoided, the arrangement of the exhaust fan 30 can facilitate the impurities and dust in the conveying pipeline 8 to be discharged out of the conveying pipeline 8 along with the air in the conveying pipeline 8, the discharge speed of the impurities and the dust is accelerated, the use effect of the device is enhanced, the dust and the impurities fall into a water source 29 in the dust removal water tank 27 under the action of the conveying pipeline 8 and the exhaust fan 30, the impurities and the dust are removed through washing, the material seeds fall onto the second sieve plate 14 after being subjected to impurity removal, the material seeds are sieved under the action of the vibration motor 20, when the vibration motor 20 rotates, the vibration motor 20 drives the cam 21 to rotate, the cam 21 rotates and simultaneously enables the bottom plate 11 to move up and down, because the spring has elastic potential energy, the vibrating motor 20 can drive the bottom plate 11 to move, the bottom plate 11 drives the connecting rod 16 to move, the connecting rod 16 drives the first sieve plate 13, the second sieve plate 14 and the material guide plate 12 to move, so that the first sieve plate 13, the second sieve plate 14 and the material guide plate 12 have a vibrating function, the material sieving effect of the first sieve plate 13 and the second sieve plate 14 is enhanced through the vibrating function, the material discharging effect of the first sieve plate 13, the second sieve plate 14 and the material guide plate 12 is enhanced, the second sieve plate 14 can sieve and discharge soil or stones mixed in the material seeds by matching with the first discharge port 17, the first sieve plate 13 can sieve and discharge seeds with larger sizes in the material seeds by matching with the second discharge port 18, the material guide plate 12 can discharge seeds with smaller sizes in the material seeds by matching with the third discharge port 19, after the device removes impurities and sieves the material seeds, the electromagnetic valve 32 is controlled, the water source 29 inside the dust removal water tank 27 is discharged through the drainage pipeline 31, the utility model discloses simple structure, convenient operation, the practicality is strong, and is with low costs, can use widely.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides an agricultural seed sieving mechanism, includes wind sieve case (1), its characterized in that: the upper surface penetrating through the outside of the air screen box (1) is provided with a feed inlet (2), one side wall penetrating through the air screen box (1) is provided with an opening (3), the inside of the opening (3) is provided with an air grille (4), one side wall outside the air screen box (1) is provided with a first shell (5) in a buckling manner, the inside of the first shell (5) is provided with a blower (6), the blower (6) is positioned on one side of the air grille (4), the other side wall outside the air screen box (1) is provided with an air pipeline (7), the air pipeline (7) is in a circular truncated cone shape, a large-size end of the air pipeline (7) is communicated with the inside of the air screen box (1), a small-size end of the air pipeline (7) is provided with a conveying pipeline (8), the conveying pipeline (8) is in an inverted L shape, a filter screen (9) is arranged at one end surface of the conveying pipeline (8) and the inside of the small-size end connection position of the air pipeline (7), the shell I (5), the blower (6), the air grid (4) and the air pipeline (7) are located in the same horizontal direction, a vibration screen box (22) is arranged on the lower surface of the air screen box (1), mounting seats (35) are symmetrically arranged on the bottom surface inside the vibration screen box (22), elastic elements (10) are arranged on the two mounting seats (35), a bottom plate (11) is arranged at one end of each elastic element (10), a guide plate (12) is obliquely arranged above the bottom plate (11), a screen plate I (13) is obliquely arranged above the guide plate (12), a screen plate II (14) is obliquely arranged above the screen plate I (13), a plurality of screen holes are formed in the screen plate I (13) and the screen plate II (14), and the screen hole size of the screen plate I (13) is smaller than that of the screen hole size of the screen plate II (14), the front and back surfaces of the second sieve plate (14), the first sieve plate (13) and the guide plate (12) are at least connected with two connecting rods (16), one end of each connecting rod (16) is equally divided into two parts respectively connected with the upper surface of the bottom plate (11), one side wall penetrating through the sieve box (22) is provided with a first discharge outlet (17), the first discharge outlet (17) is positioned below the second sieve plate (14), one side wall penetrating through the sieve box (22) is provided with a second discharge outlet (18), the second discharge outlet (18) is positioned below the first sieve plate (13), one side wall penetrating through the sieve box (22) is provided with a third discharge outlet (19), the third discharge outlet (19) is positioned below the guide plate (12), the bottom surface inside the sieve box (22) is provided with a vibrating motor (20), the output end of the vibrating motor (20) is provided with a cam (21), the cam (21) is attached to the lower surface of the bottom plate (11).

2. An agricultural seed screening apparatus as claimed in claim 1, wherein: a plurality of silk ribbons (23) are arranged on the other side wall of the air grid (4), and the silk ribbons (23) are uniformly distributed on the other side wall of the air grid (4).

3. An agricultural seed screening apparatus as claimed in claim 1, wherein: the width of the air screen box (1) is smaller than that of the vibrating screen box (22).

4. An agricultural seed screening apparatus as claimed in claim 1, wherein: the lower surface of the outside of the vibrating screen box (22) is evenly provided with four first supporting rods (24), one ends of the first supporting rods (24) are respectively provided with a first supporting seat (25), and the front surface of the outside of the wind screen box (1) is provided with a first observation window (26).

5. An agricultural seed screening apparatus as claimed in claim 1, wherein: a dust removal water tank (27) is arranged on the other side of the outer part of the vibration sieve box (22), a second observation window (28) is arranged on the front surface of the outer part of the dust removal water tank (27), the interior of the dust removal water tank (27) is filled with a water source (29), the other end face of the conveying pipeline (8) is positioned in the dust removal water tank (27), and the other end surface of the conveying pipeline (8) is positioned above the water source (29), an exhaust fan (30) is arranged in the other end face of the conveying pipeline (8), a drainage pipeline (31) is arranged on the bottom surface penetrating through the inside of the dust removal water tank (27), an electromagnetic valve (32) is arranged on the drainage pipeline (31) positioned outside the dust removal water tank (27), four second support rods (33) are uniformly arranged on the lower surface of the outer portion of the dust removal water tank (27), and one ends of the four second support rods (33) are respectively provided with a second support seat (34).

6. An agricultural seed screening apparatus according to claim 5, wherein: and a guide plate (15) matched with the drainage pipeline (31) is arranged on the bottom surface inside the dust removal water tank (27).

7. An agricultural seed screening apparatus according to claim 5, wherein: the air blower (6), the vibration motor (20), the exhaust fan (30) and the electromagnetic valve (32) are respectively electrically connected with a power supply.

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