Alfalfa seed impurity removing and screening device

Abstract

The utility model relates to the technical field of alfalfa seed impurity removing and screening, and discloses an alfalfa seed impurity removing and screening device which comprises a first screening mechanism, and the bottom of the first screening mechanism is fixedly connected with a second screening mechanism. The first screening mechanism comprises a first screening box, a funnel is arranged at the top of the first screening box, blowing equipment is installed on the left side of the first screening box, a ventilation opening is formed in the right side of the first screening box, and a ventilation net frame is fixedly connected to the right side of the first screening box. According to the alfalfa seed impurity removing and screening device, alfalfa seeds evenly fall down, light impurities in the alfalfa seeds are blown to the right side through the blowing equipment, blown into the ventilation screen frame through the ventilation openings and fall down from the bottom of the ventilation screen frame, and then the situation that the pouring amount cannot be controlled, for example, too many alfalfa seeds are poured at a time; therefore, the problem that the alfalfa seeds with the weight lower than that in an ideal state cannot be effectively blown out by the air blowing equipment is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to alfalfa seed impurity removal and screening technical field, concretely is a kind of alfalfa seed impurity removal and screening device. BACKGROUND

[0002] Alfalfa is a perennial leguminous forage, and it is the largest leguminous forage in the world. Its crude protein content accounts for about 20% of dry matter, and it is rich in carbohydrates, mineral elements and microorganisms, and it is known as the "king of forage". A large amount of alfalfa is suitable for planting in the north. Once sowing, multiple benefits. This leguminous forage can fix nitrogen during its growth, thereby maintaining soil and water. The cultivated land planted with alfalfa retains a large amount of root stubble in the soil, which can be used as organic fertilizer for soil during cultivation, thereby changing the physical and chemical properties of the cultivated land and improving the quality of the cultivated land, so that the yield and quality of the subsequent crops planted in the cultivated land are improved.

[0003] Chinese patent authorization announcement No. CN221694337U discloses a screening box, an impurity collecting box is arranged on the lower side of the screening box, an adding hopper is arranged above the screening box, and the adding hopper is installed on the top plate of the screening box; an opening is arranged at the top of the screening box, and a blowing device is arranged on one side of the screening box; a conveying hopper is installed in the impurity collecting box, and the lower end of the conveying hopper penetrates the bottom plate of the impurity collecting box. The present application supplies air to the screening box, and uses the weight difference between normal alfalfa seeds and impurities to remove and screen impurities. Compared with the prior art, even if the volume of impurities is close to that of ideal alfalfa seeds, the impurities can also be screened out, thereby effectively improving the screening effect of alfalfa seeds.

[0004] However, the above-mentioned prior art needs to be poured into the hopper at a uniform speed, and the amount of pouring cannot be controlled. If too many alfalfa seeds are poured at one time, the blowing device cannot effectively blow out the alfalfa seeds with a weight lower than the ideal state, and therefore an alfalfa seed impurity removal and screening device is urgently needed. UTILITY MODEL CONTENT

[0005] The utility model aims at providing an alfalfa seed impurity removal and screening device to solve the problems in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical scheme: an alfalfa seed impurity removal and screening device, comprising a first screening mechanism, a second screening mechanism is fixedly connected to the bottom of the first screening mechanism;

[0007] The first screening mechanism includes a first screening box, a hopper is arranged at the top of the first screening box, a blowing device is installed at the left side of the first screening box, a ventilation opening is formed at the right side of the first screening box, and a ventilation net frame is fixedly connected to the right side of the first screening box.

[0008] The bottom of the hopper is hingedly connected with a material blocking plate, the left sides of the front and rear ends of the material blocking plate are respectively fixedly connected with adjusting rods, the ends of the adjusting rods away from the material blocking plate are respectively fixedly connected with adjusting plates, the ends of the adjusting plates close to the first screening box are respectively provided with first movable grooves, the interiors of the first movable grooves are respectively provided with pull rods, the surfaces of the pull rods are respectively sleeved with springs, the surfaces of the pull rods are respectively fixedly connected with limiting blocks, and the sides of the adjusting plates away from the first screening box are respectively provided with pull holes.

[0009] The front and rear ends of the first screening box are respectively provided with arc-shaped sliding grooves, the adjusting rods are slidingly arranged in the arc-shaped sliding grooves, and a plurality of insertion holes are formed in the front and rear ends of the first screening box.

[0010] Preferably, the pull rods are respectively matched with the insertion holes, and the limiting blocks are slidingly arranged in the first movable grooves.

[0011] Preferably, the ends of the pull rods away from each other are respectively fixedly connected with pull blocks, and the ends of the springs away from the limiting blocks are respectively fixedly connected with the first movable grooves.

[0012] Preferably, the second screening mechanism includes a second screening box, the interior of the second screening box is provided with an inclined plate, the top of the inclined plate is fixedly connected with four second springs, the top of the four second springs is fixedly connected with a same sieve plate, the back of the second screening box is fixedly connected with a motor, the interior of the second screening box is rotatably provided with a rotating shaft, and the surface of the rotating shaft is fixedly connected with two knocking cams.

[0013] Preferably, the back of the rotating shaft is fixedly connected with the motor, and the left side of the second screening box is provided with a discharging opening.

[0014] Preferably, the front of the second screening box is hingedly connected with a double-door, and the left and right inner walls of the second screening box are respectively provided with vertical grooves.

[0015] Preferably, the two ends of the sieve plate are respectively provided with sliding blocks, and the sliding blocks are slidingly arranged in the vertical grooves.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] First, the utility model discloses, two people pull the pull block simultaneously, drive the pull rod to move, make the limiting block extrude the spring, make the pull rod pull out from the jack, and the jack is provided with multiple, is arranged with the arc shape and is concentric with the arc groove, and the arc groove is concentric with the hinged axle of one end of the material baffle, and then the opening angle of the material baffle can be adjusted according to the requirement, and then the speed of alfalfa seed unloading is controlled, so that the alfalfa seed can fall at a uniform speed, and manual seed uniformity is not needed, and the uniform falling of the seed alfalfa seed is blown to the right side through the blowing equipment, and the light impurities are blown to the right side, fall from the bottom of the ventilation net frame through the ventilation opening, and then the problem that the blowing equipment cannot effectively blow the alfalfa seed below the ideal state is avoided.

[0018] Second, the utility model discloses, after the light impurities in alfalfa seed are removed, fall on the screen plate in the second screening box, then rotate through the motor drive shaft, drive the knock cam to knock the screen plate, make the second spring contract, make the sliding block slide up and down in the vertical groove, and then the alfalfa seed is screened, and the large particle impurities are left on the screen plate, and the alfalfa seed falls on the inclined plate through the left discharge port, and then realizes secondary screening, and the screening effect is good, and after screening is completed, the double doors can be opened, and the large impurities on the screen plate are cleaned. DRAWINGS

[0019] Figure 1 It is the whole three-dimensional structure schematic diagram of the utility model;

[0020] Figure 2 It is the top cut structure schematic diagram of the utility model first screening mechanism place;

[0021] Figure 3 It is the enlarged structure schematic diagram of the utility model A place;

[0022] Figure 4 It is the front cut structure schematic diagram of the utility model first screening mechanism place;

[0023] Figure 5 It is the front cut structure schematic diagram of the utility model second screening mechanism place;

[0024] Figure 6 It is the right cut structure schematic diagram of the utility model second screening mechanism place.

[0025] Wherein: 1, first screening mechanism; 2, second screening mechanism; 3, blowing equipment; 4, second spring; 11, first screening box; 12, hopper; 13, ventilation net frame; 14, material blocking plate; 15, adjusting rod; 16, adjusting plate; 17, pull rod; 18, spring; 19, limiting block; 20, pull block; 21, second screening box; 22, inclined plate; 23, screen plate; 24, motor; 25, rotating shaft; 26, knocking cam; 27, double door; 28, sliding block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] The utility model provides the following technical scheme:

[0028] Embodiment one

[0029] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 And Figure 5 , a alfalfa seed impurity removing and screening device, including first screening mechanism 1, the bottom of first screening mechanism 1 is fixedly connected with second screening mechanism 2;

[0030] First screening mechanism 1 includes first screening box 11, the top of first screening box 11 is provided with hopper 12, the left side of first screening box 11 is installed with blowing equipment 3, the right side of first screening box 11 is provided with ventilation opening, and the right side of first screening box 11 is fixedly connected with ventilation net frame 13;

[0031] The bottom of hopper 12 is hingedly connected with material blocking plate 14, the left side of the front and rear ends of material blocking plate 14 is fixedly connected with adjusting rod 15 respectively, the end away from material blocking plate 14 of adjusting rod 15 is fixedly connected with adjusting plate 16 respectively, the end close to first screening box 11 of adjusting plate 16 is provided with first movable slot respectively, and the inside of first movable slot is provided with pull rod 17 respectively, the surface of pull rod 17 is respectively sleeved with spring 18, the surface of pull rod 17 is fixedly connected with limiting block 19 respectively, the side away from first screening box 11 of adjusting plate 16 is provided with pull hole respectively, and the side away from each other of pull rod 17 respectively passes through pull hole and extends to the outside of adjusting plate 16;

[0032] The front and rear ends of first screening box 11 are respectively provided with arc-shaped sliding grooves, adjusting rod 15 is slidably arranged in the arc-shaped sliding grooves respectively, and the front and rear ends of first screening box 11 are respectively provided with a plurality of insertion holes.

[0033] The pull rods 17 are respectively matched with the insertion holes, and the limiting blocks 19 are respectively and slidingly arranged in the first movable grooves.

[0034] The pull rods 17 are respectively and fixedly connected with the pull blocks 20 at the ends away from each other, and the ends of the springs 18 away from the limiting blocks 19 are respectively and fixedly connected with the first movable grooves.

[0035] Through the above technical scheme, the first screening box 11 is used for preliminary screening of seeds, the funnel 12 is used for guiding the seeds into the first screening box 11, the blowing equipment 3 is installed on the left side of the first screening box 11, and the blowing equipment 3 removes light impurities through blowing, cooperates with the ventilation opening and the air-permeable net frame 13 to ensure air circulation, and helps the blowing equipment 3 to work effectively. The material blocking plate 14 is hinged at the bottom of the funnel 12, two people pull the pull blocks 20 at the same time, drive the pull rods 17 to move, make the limiting blocks 19 press the springs 18, and make the pull rods 17 pull out of the insertion holes. The insertion holes are provided with a plurality of arc-shaped insertion holes and are arranged concentrically with the arc-shaped grooves. The arc-shaped grooves are concentric with the hinge shafts at one end of the material blocking plate 14. Thus, the opening and closing angles of the material blocking plate 14 can be adjusted according to the needs, and the speed of the alfalfa seeds can be controlled. The alfalfa seeds can fall at a uniform speed, and manual uniform seed pouring is not needed. The seeds fall uniformly, the light impurities are blown to the right side by the blowing equipment 3, fall into the air-permeable net frame 13 through the ventilation opening, and fall from the bottom of the air-permeable net frame 13. Thus, the problem that the blowing equipment 3 cannot effectively blow out the alfalfa seeds with a weight lower than the ideal state due to too much alfalfa seeds poured at one time is avoided.

[0036] Embodiment Two

[0037] Please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 , and on the basis of Embodiment One, it is further obtained that the second screening mechanism 2 comprises a second screening box 21, and the inside of the second screening box 21 is provided with an inclined plate 22. Four corners of the top of the inclined plate 22 are respectively and fixedly connected with second springs 4. The top of the four second springs 4 is fixedly connected with the same sieve plate 23. The back of the second screening box 21 is fixedly connected with a motor 24. The inside of the second screening box 21 is rotatably provided with a rotating shaft 25. The surface of the rotating shaft 25 is fixedly connected with two knocking cams 26.

[0038] The back of the rotating shaft 25 is fixedly connected with the motor 24. The left side of the second screening box 21 is provided with a discharge port.

[0039] The front of the second screening box 21 is hinged with a double-door 27. The left and right inner walls of the second screening box 21 are respectively provided with vertical grooves.

[0040] Two ends of the screen plate 23 are respectively provided with sliding blocks 28, and the sliding blocks 28 are respectively slidably arranged in vertical grooves.

[0041] Through the technical scheme, the light impurities in the alfalfa seeds are removed and then fall on the screen plate 23 in the second screening box 21, then the motor 24 drives the rotating shaft 25 to rotate and drives the knocking cam 26 to knock the screen plate 23, so that the second spring 4 is contracted, the sliding block 28 is slid up and down in the vertical groove, and then the alfalfa seeds are screened, the large-particle impurities are left on the screen plate 23, the alfalfa seeds fall on the inclined plate 22, are discharged through the left discharge port, and then the secondary screening is realized, the screening effect is good, and after the screening is completed, the double doors 27 can be opened to clean the large impurities on the screen plate 23.

[0042] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that the embodiments can be changed, modified, replaced and varied in various ranges without departing from the principles and spirits, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A device for the removal of impurities from alfalfa seeds, comprising a first screening mechanism (1), characterized in that: The bottom of the first screening mechanism (1) is fixedly connected with a second screening mechanism (2); The first screening mechanism (1) comprises a first screening box (11), the top of the first screening box (11) is provided with a hopper (12), the left side of the first screening box (11) is provided with a blowing device (3), the right side of the first screening box (11) is provided with a ventilation opening, and the right side of the first screening box (11) is fixedly connected with a ventilation net frame (13); The bottom of the hopper (12) is hingedly connected with a material blocking plate (14), the left sides of the front and rear ends of the material blocking plate (14) are fixedly connected with adjusting rods (15), respectively, one end of each adjusting rod (15) away from the material blocking plate (14) is fixedly connected with an adjusting plate (16), respectively, one end of each adjusting plate (16) close to the first screening box (11) is provided with a first movable slot, respectively, the inner part of each first movable slot is provided with a pull rod (17), respectively, the surface of each pull rod (17) is sleeved with a spring (18), respectively, the surface of each pull rod (17) is fixedly connected with a limiting block (19), respectively, one side of each adjusting plate (16) away from the first screening box (11) is provided with a pull hole, respectively, one side of each pull rod (17) away from each other penetrates through the pull hole and extends to the outside of the adjusting plate (16). The front and rear ends of the first screening box (11) are provided with arc-shaped sliding grooves, respectively, the adjusting rods (15) are slidingly arranged in the arc-shaped sliding grooves, respectively, and the front and rear ends of the first screening box (11) are provided with a plurality of insertion holes, respectively.

2. The alfalfa seed impurity removal and sizing device of claim 1, wherein: The pull rods (17) are matched with the insertion holes, respectively, and the limiting blocks (19) are slidingly arranged in the first movable slots, respectively.

3. The alfalfa seed impurity removal and sizing device of claim 1, wherein: One end of each pull rod (17) away from each other is fixedly connected with a pull block (20), respectively, one end of each spring (18) away from the limiting block (19) is fixedly connected with the first movable slot.

4. The alfalfa seed impurity removal and sizing device of claim 1, wherein: The second screening mechanism (2) comprises a second screening box (21), the inside of the second screening box (21) is provided with an inclined plate (22), the four corners of the top of the inclined plate (22) are fixedly connected with second springs (4), respectively, the top of each of the four second springs (4) is fixedly connected with a same screen plate (23), the back of the second screening box (21) is fixedly connected with a motor (24), the inside of the second screening box (21) is rotatably provided with a rotating shaft (25), and the surface of the rotating shaft (25) is fixedly connected with two knocking cams (26).

5. A device for removing impurities and screening alfalfa seeds according to claim 4, characterized in that: The back of the rotating shaft (25) is fixedly connected with the motor (24), and the left side of the second screening box (21) is provided with a discharging opening.

6. A device for removing and sizing alfalfa seeds according to claim 4, characterized in that: The front of the second screening box (21) is hingedly connected with a double-door (27), and the left and right inner walls of the second screening box (21) are provided with vertical grooves, respectively.

7. A device for removing and sizing alfalfa seeds according to claim 4, characterized in that: The two ends of the screen plate (23) are provided with sliding blocks (28), respectively, and the sliding blocks (28) are slidingly arranged in the vertical grooves, respectively.

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