CN217165338U - A device for alfalfa seed removes impurity fast - Google Patents

Abstract

The utility model relates to a seed edulcoration field discloses a device that is used for alfalfa seed to remove impurity fast, the power distribution box comprises a box body, the equal fixedly connected with fixed plate in side, two around the box upper end fixed connection has the backup pad, backup pad upper end sliding connection has hopper down, the backup pad rear side is provided with the protective housing, the first supporting seat of protective housing inner wall upper portion fixedly connected with, first supporting seat upper end is provided with first double-head motor, the equal first pivot of fixedly connected with of drive end of first double-head motor, the equal fixedly connected with head rod of one end that first pivot leaves. The utility model discloses in, through the back-and-forth movement of control lower hopper, make its inside alfalfa seed produce vibrations, orderly fall, simultaneously through the screen box of fan cooperation upper and lower floor, get rid of totally effectively with the impurity in the alfalfa seed, guaranteed subsequent storage of seed and the rate of growing seedlings.

Description

A device for alfalfa seed removes impurity fast

Technical Field

The utility model relates to a seed edulcoration field especially relates to a device that is used for alfalfa seed to remove impurity fast.

Background

Purple alfalfa has been introduced into China as pasture for more than 2000 years, the name of purple alfalfa derives from foreign words, the Chinese generation sima recorded in Shiji records that alfalfa is introduced from the Asahua state in the western region, the purple alfalfa is used as feed initially, and is called purple alfalfa because of purple blossom, and because of the three teeth on each slender stem, the purple alfalfa is commonly called clover, the alfalfa is suitable for growing, the side of the field is visible everywhere, and the purple alfalfa is called as the grass head by south of the Yangtze river, the seeds are fine, the buds are fine and weak, the top soil is poor, the soil preparation is fine, the ground is required to be smooth, the soil blocks are fine and broken, no weed exists, the root system of purple alfalfa is developed, the soil is deeply buried, and the sowing land needs to be deeply turned over, so that the root can be fully developed.

Be applied to alfalfa seed at present and carry out impurity separation through the reciprocating sieve device of removing impurities fast, though can get rid of certain stone, silt etc. nevertheless can't be effectively with the impurity clean up similar with alfalfa seed quality, the root stem leaf seed of adulteration in the seed is not good yet cleared up to influence the follow-up storage and the growing seedlings of alfalfa seed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a device for rapidly removing impurities from alfalfa seeds.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a device for rapidly removing impurities from alfalfa seeds comprises a box body, wherein the front side and the rear side of the upper end of the box body are fixedly connected with fixing plates, the upper ends of the two fixing plates are fixedly connected with supporting plates, the upper end of the supporting plate is connected with a blanking hopper in a sliding way, the rear side of the supporting plate is provided with a protective shell, the upper part of the inner wall of the protective shell is fixedly connected with a first supporting seat, a first double-head motor is arranged at the upper end of the first supporting seat, the driving ends of the first double-head motors are fixedly connected with a first rotating shaft, a first connecting rod is fixedly connected at one end of the first rotating shaft away from the first rotating shaft, a baffle is arranged at the left side of the supporting plate, the lower end of the baffle is fixedly connected with an air supply pipe, one end of the air supply pipe is provided with a fan, the lower part of the inner wall of the protective shell is fixedly connected with a second supporting seat, and a second double-head motor is arranged at the upper end of the second supporting seat, and the driving ends of the second double-head motor are fixedly connected with first supporting columns.

As a further description of the above technical solution:

the hopper is characterized in that two chutes which are uniformly distributed are arranged at the upper end of the supporting plate, the lower end of the discharging hopper is connected with the inner wall of the chute of the supporting plate in a sliding manner, and an opening is formed in the left side of the lower end of the discharging hopper.

As a further description of the above technical solution:

protective housing front side upper portion fixed connection is in backup pad rear end, equal fixed connection all around on protective housing inner wall upper portion of first supporting seat, protective housing front side lower part fixed connection is in the box rear end, equal fixed connection all around on the second supporting seat is in protective housing inner wall lower part.

As a further description of the above technical solution:

two equal fixed connection in head rod rear side is outside at first pivot, the head rod front side rotation is connected with the second pivot, one side that the head rod was kept away from in the second pivot is rotated and is connected the rear side at the second connecting rod, the one end in the third pivot is connected in the rotation of second connecting rod front side, the left and right sides of hopper is down in the equal fixed connection of the other end of third pivot.

As a further description of the above technical solution:

the baffle is positioned at the left lower side of the opening of the blanking hopper, the lower end of the baffle is fixedly connected to the upper part of the right side of the air supply pipe, and the lower end of the right side of the air supply pipe is in contact with the upper end of the box body.

As a further description of the above technical solution:

the equal first connecting plate of fixedly connected with of one end that first support column left from, first connecting plate front portion rotates to be connected in second support column one end, the second support column other end rotates the rear side of connecting at the second connecting plate, the front side of second connecting plate rotates the one end of connecting at the third support column, the other end fixed connection of third support column is in the left and right sides of upper sieve case, sliding connection in the spout that both ends upper portion set up about the box in the outside of third support column, upper sieve incasement wall lower part is provided with evenly distributed's through-hole.

As a further description of the above technical solution:

third support column middle part fixed connection third connecting plate upper portion, third connecting plate lower part is provided with the through hole, the through hole inner wall rotates and is connected with fixing bolt, fixing bolt runs through third connecting plate and the spout threaded connection of the left and right ends lower part of box and controls both sides at the sieve case of lower floor, sieve incasement wall lower part of lower floor is provided with evenly distributed's through-hole.

As a further description of the above technical solution:

the utility model discloses a screen box, including lower floor's sieve case, lower floor's sieve case below is provided with the collecting box, the equal sliding connection in lower floor's sieve case upper and lower end left and right sides has the dog, the equal fixed connection of one end that the dog is close to the box is on the side inner wall about the box.

The utility model discloses following beneficial effect has:

in the utility model, the lower hopper, the supporting plate, the baffle, the fan and the blast pipe are arranged, so that the lower hopper for storing alfalfa seeds is driven by the first double-head motor to vibrate back and forth through the first rotating shaft, the first connecting rod and the second connecting rod drive the lower hopper for storing alfalfa seeds, further the seeds in the lower hopper are orderly fallen downwards and are removed under the action of the fan when the seeds pass through the outlet of the blast pipe, dead branches and dead leaves in the seeds and other light sundries are removed, then the lower screen box is used, the upper screen box and the collecting box are arranged, so that the alfalfa seeds with full grains are left in the lower screen box through the first supporting column, the first connecting plate, the second connecting plate and the third connecting plate drive the reciprocating vibration of the upper screen box and the lower screen box, the sundries with large mass are retained in the upper screen box, some fine but heavy impurities or seeds are screened in the collecting box, wait for the user to unify and take out the collection, improved the efficiency of getting rid of impurity greatly, guaranteed the rate of growing seedlings after the seed storage.

Drawings

FIG. 1 is a front view of the device for rapidly removing impurities from alfalfa seeds according to the present invention;

FIG. 2 is a rear sectional view of the device for rapidly removing impurities from alfalfa seeds according to the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

fig. 4 is an enlarged view at B in fig. 2.

Illustration of the drawings:

1. feeding a hopper; 2. a second connecting rod; 3. a baffle plate; 4. a first support column; 5. an air supply pipe; 6. a fan; 7. a support plate; 8. a fixing plate; 9. a box body; 10. a first connecting plate; 11. a second double-headed motor; 12. a second support seat; 13. a collection box; 14. a first connecting rod; 15. a protective shell; 16. a second rotating shaft; 17. a third rotating shaft; 18. a first double-headed motor; 19. a first support base; 20. a first rotating shaft; 21. an upper screen box; 22. a third connecting plate; 23. a third support column; 24. a second connecting plate; 25. fixing the bolt; 26. a second support column; 27. a stopper; 28. and a lower-layer screen box.

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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides an embodiment: a device for quickly removing impurities from alfalfa seeds comprises a box body 9, wherein fixing plates 8 are fixedly connected to the front side and the rear side of the upper end of the box body 9, a supporting plate 7 is fixedly connected to the upper ends of the two fixing plates 8, a blanking hopper 1 is slidably connected to the upper end of the supporting plate 7, a protective shell 15 is arranged on the rear side of the supporting plate 7, a first supporting seat 19 is fixedly connected to the upper portion of the inner wall of the protective shell 15, a first double-head motor 18 is arranged at the upper end of the first supporting seat 19, a first rotating shaft 20 is fixedly connected to the driving end of the first double-head motor 18, a first connecting rod 14 is fixedly connected to one end, away from the first rotating shaft 20, a baffle 3 is arranged on the left side of the supporting plate 7, an air supply pipe 5 is fixedly connected to the lower end of the baffle 3, a fan 6 is arranged at one end of the air supply pipe 5, a second supporting seat 12 is fixedly connected to the lower portion of the inner wall of the protective shell 15, and a second double-head motor 11 is arranged at the upper end of the second supporting seat 12, the drive end of the second double-headed motor 11 is fixedly connected with the first support column 4, to sum up: when the device is used, firstly, sufficient alfalfa seeds are added into the lower hopper 1, then the first double-head motor 18 is started, the driving end of the first double-head motor 18 drives the first rotating shaft 20 to rotate, the first rotating shaft 20 drives the first connecting rod 14 to rotate, the first connecting rod 14 drives the second connecting rod 2 to rotate when rotating, the second connecting rod 2 drives the third rotating shaft 17, the third rotating shaft 17 is fixedly connected to the left end and the right end of the lower hopper 1 and drives the lower hopper 1 to move back and forth to enable the alfalfa seeds in the lower hopper to vibrate, the alfalfa seeds fall from an opening on the left side of the lower end of the lower hopper 1 to the upper surface of the baffle 3, the baffle 3 inclines at a certain angle, the front side and the rear side of the upper end of the baffle 3 are respectively provided with baffle strips to prevent the alfalfa seeds from falling off, the two baffle strips guide the alfalfa seeds into the box 9 at a certain angle, and the alfalfa seeds pass through an air outlet of the air feed pipe 5 before being guided into the box 9, the air quantity with certain intensity generated by the fan 6 is blown outwards through the air outlet of the air supply pipe 5, when the alfalfa seeds fall from the baffle plate 3 to the box body 9 and pass through the air outlet, under the action of the fan 6, some dead branches, dead leaves and some impurities with light weight in the alfalfa seeds can be blown away, the rest impurities continuously fall into the upper layer screen box 21 in the box body 9, at the moment, the upper layer screen box 21 drives the first supporting columns 4 on two sides to rotate by starting the second double-head motor 11, the first supporting columns 4 drive the first connecting plate 10 to rotate, the first connecting plate 10 drives the second connecting plate 24 to rotate, the second connecting plate 24 drives the third supporting column 23 to move, the third supporting column 23 passes through the sliding grooves arranged on the upper parts of the two sides of the box body 9 and is fixedly connected on the two sides of the upper layer screen box 21, the lower part of the inner wall of the upper layer screen box 21 is provided with through holes, the through holes can isolate the impurities with large volume and the like outside, alfalfa seeds then fall through the through-hole inside lower screen box 28, lower floor's screen box 28 passes through third connecting plate 22 and connects upper screen box 21 synchronous oscillation, alfalfa seeds that fall upper screen box 21 and tiny but heavier debris sieve once, tiny debris and some unqualified alfalfa seeds fall in collecting box 13 below through the through-hole of lower screen box 28, the plump alfalfa seeds of granule then stays in lower screen box 28, wait for to take out unified collection, the impurity of fully having guaranteed alfalfa seeds gets rid of, make its subsequent storage and the rate of growing seedlings promote greatly.

The upper end of the supporting plate 7 is provided with two chutes which are evenly distributed, the lower end of the discharging hopper 1 is connected with the inner wall of the chute of the supporting plate 7 in a sliding way, the left side of the lower end of the discharging hopper 1 is provided with an opening, the discharging hopper 1 slides back and forth during work to drive the alfalfa seeds inside to continuously vibrate and flow downwards from the opening on the left side of the lower end, the upper part of the front side of the protective shell 15 is fixedly connected with the rear end of the supporting plate 7, the periphery of the first supporting seat 19 is fixedly connected with the upper part of the inner wall of the protective shell 15, the lower part of the front side of the protective shell 15 is fixedly connected with the rear end of the box body 9, the periphery of the second supporting seat 12 is fixedly connected with the lower part of the inner wall of the protective shell 15, the protective shell 15 is fixed at the rear ends of the supporting plate 7 and the box body 9, the periphery of the inner wall is fixedly connected with the first supporting seat 19 and the second supporting seat 12 for fixing, the first double-head motor 18 is fixed at the upper part of the first supporting seat 19, a second double-head motor 11 is fixed on the upper part of the second supporting seat 12, the rear sides of two first connecting rods 14 are fixedly connected with the outside of a first rotating shaft 20, the front side of the first connecting rod 14 is rotatably connected with a second rotating shaft 16, one side of the second rotating shaft 16 far away from the first connecting rod 14 is rotatably connected with the rear side of a second connecting rod 2, the front side of the second connecting rod 2 is rotatably connected with one end of a third rotating shaft 17, the other end of the third rotating shaft 17 is fixedly connected with the left side and the right side of the lower hopper 1, when the first double-head motor 18 is started, the driving end drives the first rotating shaft 20 to rotate, the first rotating shaft 20 drives the first connecting rod 14 to rotate, the first connecting rod 14 drives the second connecting rod 2 to rotate when rotating, the second connecting rod 2 drives the third rotating shaft 17, the third rotating shaft 17 is fixedly connected with the left end and the right end of the lower hopper 1 and drives the lower hopper 1 to move back and forth to vibrate the internal alfalfa seeds, the alfalfa seeds flow down from an opening on the left side of the lower end of a lower hopper 1, a baffle plate 3 is positioned on the left lower side of the opening of the lower hopper 1, the lower end of the baffle plate 3 is fixedly connected to the upper part of the right side of an air supply pipe 5, the lower end of the right side of the air supply pipe 5 is in contact with the upper end of a box body 9, when the alfalfa seeds leave from the lower hopper 1, the alfalfa seeds firstly fall onto the upper surface of the baffle plate 3, the baffle plate 3 inclines at a certain angle, baffle strips are arranged on the front side and the rear side of the upper end of the baffle plate 3 respectively to prevent the alfalfa seeds from falling off, the two baffle strips guide the alfalfa seeds into the box body 9 in an auxiliary mode at a certain angle, the alfalfa seeds pass through an air outlet of the air supply pipe 5 before being guided into the box body 9, certain-strength air quantity generated by a fan 6 is blown outwards through the air outlet of the air supply pipe 5, when the alfalfa seeds fall into the box body 9 from the baffle plate 3 and pass through the air outlet, under the action of the fan 6, some dead branches, dead leaves and some light impurities in the alfalfa seeds can be blown away, the separated ends of the first supporting columns 4 are fixedly connected with a first connecting plate 10, the front part of the first connecting plate 10 is rotatably connected with one end of a second supporting column 26, the other end of the second supporting column 26 is rotatably connected with the rear side of a second connecting plate 24, the front side of the second connecting plate 24 is rotatably connected with one end of a third supporting column 23, the other end of the third supporting column 23 is fixedly connected with the left side and the right side of the upper-layer screen box 21, the outer part of the third supporting column 23 is in sliding connection in sliding grooves formed in the upper parts of the left end and the right end of the box body 9, through holes which are uniformly distributed are formed in the lower part of the inner wall of the upper-layer screen box 21, when the second double-head motor 11 is started, the first supporting columns 4 on the two sides are driven to rotate, the first supporting columns 4 drive the first connecting plate 10 to rotate, the first connecting plate 10 drive the second connecting plate 24 to rotate, the second connecting plate 24 drives the third supporting column 23 to move, the third supporting column 23 passes through the sliding grooves formed in the upper parts of the two sides of the box body 9 and is fixedly connected with the two sides of the upper-layer screen box 21, the lower part of the inner wall of the upper layer screen box 21 is provided with a through hole which can isolate sundry stones with larger volume, etc. outside, alfalfa seeds fall into the lower layer screen box 28 through the through hole, the middle part of the third support column 23 is fixedly connected with the upper part of the third connecting plate 22, the lower part of the third connecting plate 22 is provided with a through hole, the inner wall of the through hole is rotatably connected with a fixing bolt 25, the fixing bolt 25 penetrates through the third connecting plate 22 and the chutes at the lower parts of the left and right ends of the box body 9 and is in threaded connection with the left and right sides of the lower layer screen box 28, the lower part of the inner wall of the lower layer screen box 28 is provided with evenly distributed through holes, the lower part of the lower layer screen box 28 is provided with a collecting box 13, the left and right sides of the upper and lower ends of the lower layer screen box 28 are in sliding connection with a baffle 27, one end of the baffle 27 close to the box body 9 is fixedly connected on the inner walls of the left and right sides of the box body 9, the middle part of the third support column 23 is fixedly connected with the third connecting plate 22, when the upper layer screen box 21 is driven by the third support column 23 to vibrate, through third connecting plate 22 synchronous drive fixing bolt 25, fixing bolt 25 runs through third connecting plate 22 downside and threaded connection in the both sides of lower floor's sieve case 28, synchronous drive lower floor's sieve case 28 shakes, when lower floor's sieve case 28 shakes, the alfalfa seed that falls down with upper sieve case 21 sieves with tiny nevertheless heavier debris once, tiny debris and some unqualified alfalfa seeds fall in collecting box 13 of below through the through-hole of lower floor's sieve case 28, the alfalfa seed that the granule is full then stays in lower floor's sieve case 28, wait for to take out unified collection, when taking out the collection, can be with collecting box 13 through opening the shutter that opens and shuts that box 9 front end set up, lower floor's sieve case 28 takes out.

The working principle is as follows: when the device is used, firstly, enough alfalfa seeds are added into the lower hopper 1, then the first double-head motor 18 is started, the driving end of the first double-head motor 18 drives the first rotating shaft 20 to rotate, the first rotating shaft 20 drives the first connecting rod 14 to rotate, the first connecting rod 14 drives the second connecting rod 2 to rotate when rotating, the second connecting rod 2 drives the third rotating shaft 17, the third rotating shaft 17 is fixedly connected with the left end and the right end of the lower hopper 1 and drives the lower hopper 1 to move back and forth so that the internal alfalfa seeds vibrate and fall from an opening at the left side of the lower end of the lower hopper 1 to the upper surface of the baffle 3, the baffle 3 inclines at a certain angle, the front side and the rear side of the upper end of the baffle 3 are provided with baffle strips to prevent the alfalfa seeds from falling off, the two baffle strips guide the alfalfa seeds into the box 9 at a certain angle, and the alfalfa seeds pass through the air outlet of the air feed pipe 5 before being guided into the box 9, the air quantity with certain intensity generated by the fan 6 is blown outwards through the air outlet of the air supply pipe 5, when the alfalfa seeds fall from the baffle plate 3 to the box body 9 and pass through the air outlet, under the action of the fan 6, some dead branches, dead leaves and some impurities with light weight in the alfalfa seeds can be blown away, the rest impurities continuously fall into the upper layer screen box 21 in the box body 9, at the moment, the upper layer screen box 21 drives the first supporting columns 4 on two sides to rotate by starting the second double-head motor 11, the first supporting columns 4 drive the first connecting plate 10 to rotate, the first connecting plate 10 drives the second connecting plate 24 to rotate, the second connecting plate 24 drives the third supporting column 23 to move, the third supporting column 23 passes through the sliding grooves arranged on the upper parts of the two sides of the box body 9 and is fixedly connected on the two sides of the upper layer screen box 21, the lower part of the inner wall of the upper layer screen box 21 is provided with through holes, the through holes can isolate the impurities with large volume and the like outside, alfalfa seeds then fall through the through-hole inside lower screen box 28, lower floor's screen box 28 passes through third connecting plate 22 and connects upper screen box 21 synchronous oscillation, sifts the alfalfa seeds that upper screen box 21 fell and tiny but heavier debris once, and tiny debris and some unqualified alfalfa seeds fall through the through-hole of lower screen box 28 in the collecting box 13 that falls downwards, and the alfalfa seeds that the granule is full then stays in lower screen box 28, waits to take out unified collection.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (8)

1. The utility model provides a device that is used for alfalfa seed to remove impurity fast, includes box (9), its characterized in that: the front side and the rear side of the upper end of the box body (9) are fixedly connected with fixing plates (8), the upper ends of the two fixing plates (8) are fixedly connected with supporting plates (7), the upper end of each supporting plate (7) is connected with a blanking hopper (1) in a sliding manner, the rear side of each supporting plate (7) is provided with a protective shell (15), the upper portion of the inner wall of each protective shell (15) is fixedly connected with a first supporting seat (19), the upper end of each first supporting seat (19) is provided with a first double-head motor (18), the driving end of each first double-head motor (18) is fixedly connected with a first rotating shaft (20), one end of each first rotating shaft (20) away from each other is fixedly connected with a first connecting rod (14), the left side of each supporting plate (7) is provided with a baffle (3), the lower end of each baffle (3) is fixedly connected with an air supply pipe (5), one end of each air supply pipe (5) is provided with a fan (6), the inner wall lower part of the protective shell (15) is fixedly connected with a second supporting seat (12), a second double-head motor (11) is arranged at the upper end of the second supporting seat (12), and a first supporting column (4) is fixedly connected to the driving end of the second double-head motor (11).

2. The device for rapidly removing impurities from alfalfa seeds as claimed in claim 1, wherein: two chutes which are uniformly distributed are arranged at the upper end of the supporting plate (7), the lower end of the discharging hopper (1) is connected with the inner wall of the chute of the supporting plate (7) in a sliding manner, and an opening is formed in the left side of the lower end of the discharging hopper (1).

3. The device for rapidly removing impurities from alfalfa seeds as claimed in claim 1, wherein: protective housing (15) front side upper portion fixed connection is in backup pad (7) rear end, equal fixed connection is on protective housing (15) inner wall upper portion all around in first supporting seat (19), protective housing (15) front side lower part fixed connection is in box (9) rear end, equal fixed connection is in protective housing (15) inner wall lower part all around in second supporting seat (12).

4. The device for rapidly removing impurities from alfalfa seeds as claimed in claim 1, wherein: two the equal fixed connection in first pivot (20) of head rod (14) rear side is outside, head rod (14) front side rotation is connected with second pivot (16), one side rotation of keeping away from head rod (14) in second pivot (16) is connected in the rear side of second connecting rod (2), the one end in third pivot (17) is connected in the rotation of second connecting rod (2) front side, the left and right sides of the equal fixed connection of the other end of third pivot (17) hopper (1) down.

5. The device for rapidly removing impurities from alfalfa seeds as claimed in claim 1, wherein: the baffle (3) is positioned at the left lower side of the opening of the lower hopper (1), the lower end of the baffle (3) is fixedly connected to the upper part of the right side of the air supply pipe (5), and the lower end of the right side of the air supply pipe (5) is in contact with the upper end of the box body (9).

6. The device for rapidly removing impurities from alfalfa seeds as claimed in claim 1, wherein: the equal first connecting plate of fixedly connected with of one end that first support column (4) were kept away from mutually (10), first connecting plate (10) front portion is rotated and is connected in second support column (26) one end, second support column (26) other end is rotated and is connected the rear side at second connecting plate (24), the front side of second connecting plate (24) is rotated and is connected the one end at third support column (23), the other end fixed connection of third support column (23) is in the left and right sides of upper screen box (21), sliding connection in the spout that both ends upper portion set up about box (9) is controlled to the outside of third support column (23), upper screen box (21) inner wall lower part is provided with evenly distributed's through-hole.

7. The device of claim 6, wherein the device for rapidly removing impurities from alfalfa seeds comprises: third support column (23) middle part fixed connection third connecting plate (22) upper portion, third connecting plate (22) lower part is provided with the through hole, the through hole inner wall rotates and is connected with fixing bolt (25), fixing bolt (25) run through third connecting plate (22) and box (9) about spout threaded connection of end lower part sieve case (28) left and right sides in lower floor, sieve case (28) inner wall lower part in lower floor is provided with evenly distributed's through-hole.

8. The device of claim 7, wherein the device for rapidly removing impurities from alfalfa seeds comprises: the lower-layer sieve box (28) is provided with a collecting box (13) below, the left side and the right side of the upper end and the lower end of the lower-layer sieve box (28) are respectively connected with a check block (27) in a sliding mode, and one end, close to the box body (9), of the check block (27) is fixedly connected to the inner wall of the left side and the right side of the box body (9).

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