Seed screening device

Abstract

The utility model belongs to the technical field of seed screening, particularly relates to a seed screening device, and aims to solve the problems that an existing device is small in applicable screening range and not convenient to clean impurities which are not screened, the seed screening device comprises a screening frame and a screen assembly, and the screen assembly is provided with adjustable meshes. The screen mesh assembly comprises a fixed outer screen mesh and a movable inner screen mesh, the meshes are adjusted to the corresponding size, small impurities and seeds needing to be screened out can be screened respectively, screening of the seeds can be completed through one screen mesh assembly, the screening efficiency is improved, and the screening efficiency is improved. The meshes can be arranged in the corresponding size according to specific screening requirements, unscreened impurities do not need to be cleaned from the screen after screening is finished, operation and use are convenient, screening treatment of different types of seeds can be met, screening operation does not need to be conducted through replacement of screens with different meshes, and the screening efficiency is improved. And the application range of the screening device can be greatly widened.

Description

TECHNICAL FIELD

[0001] The utility model relates to a screening device, concretely to a seed screening device belongs to seed screening technical field. BACKGROUND

[0002] Seed rope is a method of using paper tape to weave rope, and seeds are evenly woven in the seed rope according to the required distance. The seed rope is buried in the soil to complete precision seeding. The seed rope seeding technology replaces the traditional seeding method, which is completed by machinery, greatly reducing the burden of seeding machinery. However, in the preparation of seed rope, in order to improve the quality of the seeds woven in the rope, the seed raw materials often need to be screened, that is, some impurities in the seed raw materials need to be removed, so that the qualified good seeds can be wrapped and woven in the seed rope, to ensure that the seeds evenly distributed in the seed rope have a high germination rate. Therefore, a special screening device is needed to screen the seed raw materials.

[0003] In the prior art, a kind of granular seed screening device is disclosed in the patent number CN111299141A, granular seed screening mechanism is arranged in device main part, granular seed screening mechanism includes granular seed screening board one, granular seed screening board two and granular seed screening board three, granular seed screening board one and granular seed screening board two are respectively uniformly distributed with screening hole one and screening hole two, further include vibration mechanism, vibration mechanism includes vibration motor, the prior art is also through the way of vibrating screening to multiple screening of seed, but in actual use, since multiple screening boards need to be set, and screening boards need to be installed at a certain distance, not only the volume of the whole screening device will be increased, but also since the fixed screening holes are set in the screening boards, when different types of seeds are used, the fixed size of the screening holes cannot meet the needs of the seeds with large size difference, so different size of the screening board needs to be replaced, that is, the application range is narrow, secondly, when screening, some impurities that cannot pass through the screening board are often left on the uppermost screening board, and the impurities need to be cleaned separately from the screening board after screening, which brings great inconvenience to actual screening work. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of seed screening device to solve the problem that the screening range of existing device is small and the impurities that do not pass through are not convenient to clean.

[0005] The utility model realizes the above-mentioned purposes by the following technical solutions: a kind of seed screening device, including screening frame and screen assembly, the screen assembly is connected at the bottom end of screening frame, one end outer wall of the screening frame is fixedly connected with vibration motor, the both sides of the screening frame are connected with elastic support seat, the screen assembly is provided with adjustable mesh;

[0006] The screen assembly comprises a fixed outer screen and a movable inner screen, the movable inner screen is tightly attached to the lower surface of the fixed outer screen, the fixed outer screen is provided with a plurality of outer screen mesh holes, the movable inner screen is provided with a plurality of inner screen mesh holes, the outer side edge of the fixed outer screen is connected with a screen limiting frame, the screen limiting frame is connected with the bottom opening part of the screening frame, and the movable inner screen is movably connected with the fixed outer screen along the diagonal direction.

[0007] As a further scheme of the present application, the upper end opening of the screening frame is connected with a feeding hopper, and the feeding hopper is in the shape of a trumpet mouth.

[0008] As a further scheme of the present application, one corner of the movable inner screen is slidably connected with a guide rod, the guide rod penetrates one corner of the screen limiting frame, the axis of the rod body of the guide rod overlaps the diagonal line of the movable inner screen, the other corner of the movable inner screen is rotatably connected with a threaded adjusting rotating rod, the threaded adjusting rotating rod penetrates the other corner of the screen limiting frame in a threaded manner, and the axis of the rod body of the threaded adjusting rotating rod overlaps the axis of the rod body of the guide rod.

[0009] As a further scheme of the present application, the other two corners of the movable inner screen are provided with limiting holes, the inner sides of the other two corners of the screen limiting frame are connected with limiting rods, the rod bodies of the limiting rods are inserted into the limiting holes, and the setting direction of the limiting holes and the connecting direction of the limiting rods are parallel to the moving path of the movable inner screen.

[0010] As a further scheme of the present application, the two perpendicular edges of one of the outer screen mesh holes of the fixed outer screen are provided with scale lines, and the scale lines are located on the upper surface of the fixed outer screen.

[0011] As a further scheme of the present application, the lower part of the screening frame is provided with a bottom plate, the lower end of the elastic supporting seat is fixedly connected with a supporting plate, and the supporting plate is vertically connected to the bottom plate.

[0012] As a further scheme of the present application, a collecting hopper is further arranged directly below the screening frame, the collecting hopper is fixedly connected with the inner side plate surface of the two side supporting plates, an storage box is movably arranged on the bottom plate and located directly below the collecting hopper.

[0013] As a further scheme of the present application, a supporting groove is formed in the side surface of the elastic supporting seat close to the screening frame, a supporting block is movably arranged in the supporting groove, and the supporting block is fixedly connected with the outer side wall of the screening frame.

[0014] As a further scheme of the utility model: vertical connecting rod is connected in the support groove, the rod body of connecting rod is through the support block, the rod body of connecting rod is also equipped with compression spring, the compression spring is located the upside and downside of support block respectively, the compression spring is in compression state.

[0015] The utility model discloses the beneficial effect is:

[0016] 1, the utility model discloses a screening frame and screen assembly are set up, screen assembly is provided with adjustable mesh, can pass through the seed is poured into screening frame, starts vibration motor and can make screening frame vibrate, can realize driving the seed in frame vibration, then under the action of screen assembly, by adjusting mesh to corresponding size, can screen the smaller impurity and the seed that needs to be screened respectively, can realize the screening of seed through one screen assembly, and can set up mesh in corresponding size according to the specific screening requirement, can satisfy the screening treatment of different types of seed, need not to change the screening operation of different mesh screen, can greatly improve the application range of the screening device.

[0017] 2, the screen assembly including fixed outer screen and movable inner screen that the utility model discloses is set up, movable inner screen is connected with fixed outer screen and moves along diagonal direction relatively, can pass through the position adjustment of movable inner screen, then can make outer screen mesh and inner screen mesh from the complete overlap state adjustment to the complete staggered state, can make the combined mesh of screen assembly have greater adjustment range, can be adjusted to small mesh state first when screening in fact, and the small particle impurity in seed is screened, then adjust to the size mesh state of seed size, and the qualified seed is screened out, finally adjust to the maximum mesh state, and all the large particle impurities that are not screened on screen can be leaked, that is, need not to clean the impurities that are not screened on screen, convenient operation uses. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is whole structure schematic diagram of the utility model;

[0019] Figure 2 It is the outer screen mesh and inner screen mesh complete staggered state structure schematic diagram of screen assembly of the utility model;

[0020] Figure 3 It is the outer screen mesh and inner screen mesh complete overlap state structure schematic diagram of screen assembly of the utility model;

[0021] Figure 4 It is fixed outer screen structure schematic diagram of screen assembly of the utility model;

[0022] Figure 5 It is movable inner screen structure schematic diagram of screen assembly of the utility model;

[0023] Figure 6 For the utility model Figure 2 Structure diagram at A in the middle;

[0024] Figure 7 For the utility model Figure 3 Structure diagram at B in the middle;

[0025] Figure 8 For the utility model Figure 5 Structure diagram at C in the middle;

[0026] Figure 9 For the utility model screen assembly outer screen mesh and inner screen mesh mesh overlapping scale line position structure schematic view;

[0027] Figure 10 For the utility model elastic support seat section structure schematic view.

[0028] In the drawing: 1, screen frame, 11, feed hopper, 12, vibration motor, 2, screen assembly, 21, fixed outer screen, 22, movable inner screen, 23, screen limiting frame, 24, outer screen mesh, 25, limiting rod, 26, inner screen mesh, 27, guide rod, 28, threaded adjusting rod, 29, limiting hole, 210, scale line, 3, elastic support seat, 31, support groove, 32, connecting rod, 33, compression spring, 34, support block, 4, collection hopper, 5, support plate, 6, bottom plate, 7, storage tank. Specific implementation

[0029] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with 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 scope of protection of the utility model. Embodiment one

[0030] As Figures 1 to 5As shown, a seed screening device includes a screening frame 1 and a screen assembly 2 connected to the bottom end of the screening frame 1, one end of the screening frame 1 is fixedly connected with a vibrating motor 12, and the two sides of the screening frame 1 are connected with elastic support seats 3. The screen assembly 2 is provided with adjustable mesh, and the seed can be poured into the screening frame 1, and the vibrating motor 12 is started to vibrate the screening frame 1, thereby driving the seed in the frame to vibrate, and then under the action of the screen assembly 2, the mesh is adjusted to the corresponding size, and the smaller impurities and the seeds that need to be screened out are screened respectively, that is, the screening of the seeds is completed by one screen assembly 2, and the mesh can be set to the corresponding size according to the specific screening requirement, which can meet the screening requirement of different types of seeds, and the screening operation of different mesh screens is not required, which can greatly improve the application range of the screening device.

[0031] The screen assembly 2 includes a fixed outer screen 21 and a movable inner screen 22, the movable inner screen 22 is tightly attached to the lower surface of the fixed outer screen 21, the fixed outer screen 21 is provided with a plurality of outer screen mesh holes 24, the movable inner screen 22 is provided with a plurality of inner screen mesh holes 26, the outer side of the fixed outer screen 21 is connected with a screen limiting frame 23, the screen limiting frame 23 is connected with the bottom opening part of the screening frame 1, and the movable inner screen 22 is movably connected with the fixed outer screen 2 along the diagonal direction. The position of the movable inner screen 22 can be adjusted, and then the outer screen mesh hole 24 and the inner screen mesh hole 26 can be adjusted from the completely overlapping state to the completely staggered state, that is, the combined mesh of the screen assembly 2 has a large adjustment range, which can be adjusted to a small mesh state to screen out small particle impurities in the seeds, then adjusted to a mesh state with the size of the seeds to screen out qualified seeds, and finally adjusted to a maximum mesh state to make all the large particle impurities on the screen leak out, that is, the unfiltered impurities on the screen do not need to be cleaned, which is convenient to operate and use. Example two

[0032] Based on the improvement of example one:

[0033] As shown in Figures 1 to 9 The upper end opening of the screening frame 1 is connected with a feeding hopper 11, the feeding hopper 11 is in the shape of a bell mouth, which can facilitate the addition of seed raw materials to be screened into the screening frame 1, and avoid spilling some raw materials when adding.

[0034] Further, one corner of the movable inner screen 22 is slidingly connected with a guide rod 27, the guide rod 27 penetrates one corner of the screen limiting frame 23, and the axis of the guide rod 27 overlaps the diagonal line of the movable inner screen 22, the other corner of the movable inner screen 22 is rotationally connected with a threaded adjusting rotating rod 28, the threaded adjusting rotating rod 28 penetrates the other corner of the screen limiting frame 23, and the axis of the threaded adjusting rotating rod 28 overlaps the axis of the guide rod 27, the threaded adjusting rotating rod 28 can be rotated to drag the movable inner screen 22 to move along the diagonal line in the screen limiting frame 23, thereby the overlapping range of the outer screen mesh 24 and the inner screen mesh 26 can be adjusted, that is, the size of the adjustable mesh hole of the screen assembly 2 can be adjusted; it should be noted that a damping rubber sleeve can be sleeved on the rod body of the threaded adjusting rotating rod 28, and a locking nut can be threadedly connected on the rod body of the threaded adjusting rotating rod 28 to fix the position of the threaded adjusting rotating rod 28 after rotation, so as to avoid the change of the size of the adjusted hole during the vibration screening process.

[0035] Further, the other two corners of the movable inner screen 22 are provided with limiting holes 29, the other two corners of the screen limiting frame 23 are connected with limiting rods 25, the rod bodies of the limiting rods 25 are inserted into the limiting holes 29, and the opening direction of the limiting holes 29 and the connection direction of the limiting rods 25 are parallel to the movement path of the movable inner screen 22, the limiting connection of the limiting holes 29 and the limiting rods 25 can make the other two corners of the movable inner screen 22 also combinedly connected with the screen limiting frame 23, thereby ensuring that the movable inner screen 22 can always keep the movement path of the diagonal line during movement.

[0036] Further, the two vertical edges of one of the outer screen meshes 24 of the fixed outer screen 21 are provided with scale lines 210, and the scale lines 210 are located on the upper surface of the fixed outer screen 21, when the overlapping range of the outer screen mesh 24 and the inner screen mesh 26 is adjusted by rotating the threaded adjusting rotating rod 28, the size of the hole can be obtained according to the position of the scale line 210 where the side edge of the inner screen mesh 26 is located, thereby the staff can accurately adjust.

[0037] As shown in Figure 1 and Figure 10 , the lower part of the screening frame 1 is provided with a bottom plate 6, the lower end of the elastic support seat 3 is fixedly connected with a support plate 5, the support plate 5 is vertically connected on the bottom plate 6, which can realize the stable support of the screening frame 1, and when the screening frame 1 is vibrated by the vibration motor 12, the elastic support seat 3 can compensate the vibration amplitude of the screening frame 1, thereby maintaining the stability of the bottom plate 6, that is, the screening device can realize the vibration screening of the seeds under the condition of stable placement.

[0038] Further, the collecting hopper 4 is arranged below the screening frame 1, and is fixedly connected with the inner side plate surface of the two side supporting plates 5; the storage box 7 is movably arranged on the bottom plate 6 and located below the collecting hopper 4, so that the impurities or qualified seeds screened out can be collected by the collecting hopper 4 and then fall into the storage box 7; and the storage box 7 can be replaced, i.e. the storage box 7 can be replaced according to whether the impurities or qualified seeds are required to be collected, so that the classified collection after screening is realized.

[0039] Further, the elastic supporting seat 3 is provided with a supporting groove 31 on one side surface close to the screening frame 1, and the supporting block 34 is movably arranged in the supporting groove 31 and fixedly connected with the outer side wall of the screening frame 1, so that the supporting block 34 can have a certain movement space in the supporting groove 31 when the screening frame 1 vibrates, i.e. the bottom plate 6 will not vibrate together with the screening frame 1.

[0040] Further, the connecting rod 32 is vertically connected in the supporting groove 31, the rod body of the connecting rod 32 penetrates through the supporting block 34, the compression spring 33 is sleeved on the rod body of the connecting rod 32, and the compression spring 33 is located on the upper side and the lower side of the supporting block 34 respectively; the compression spring 33 is in a compressed state, i.e. the supporting block 34 is connected in a suspended manner in the supporting groove 31, and when the screening frame 1 vibrates, the upper and lower compression springs 33 can be stressed respectively, so that the amplitude of the vibration of the screening frame 1 is avoided from being too large, and the vibration of the screening device is reduced.

[0041] Working principle: according to the size of the seeds required to be screened, the rotating screw adjusting rod 28 is rotated to drive the movable inner screen 22 to move along the diagonal line in the screen limiting frame 23, so that the overlapping range of the outer screen mesh 24 and the inner screen mesh 26 is adjusted, i.e. the size of the holes of the adjustable screen mesh of the screen mesh assembly 2 is adjusted; the seeds are poured into the screening frame 1, the vibration motor 12 is started, and the screening frame 1 is vibrated, so that the seeds in the frame are vibrated, and then under the action of the screen mesh assembly 2, the small particle impurities in the seeds are screened out by adjusting to the small mesh state, the qualified seeds are screened out by adjusting to the mesh state with the size of the seeds, and the large particle impurities on the screen are all leaked by adjusting to the maximum mesh state, i.e. the un-screened impurities on the screen do not need to be cleaned, which is convenient to operate and use, can meet the screening treatment of different types of seeds, does not need to replace the screen mesh with different mesh sizes for screening operation, and can greatly improve the application range of the screening device.

[0042] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0043] Furthermore, it should be understood that although the present specification is described in terms of embodiments, not every embodiment according to the present specification needs to exhibit each and every characteristic specified in the present specification. The specification can also be described in terms of a single preferred embodiment, it being understood that this single preferred embodiment can exhibit not every aspect or feature of the present specification. The specification can also be described in terms of a generic statement that the disclosure can include one, some, or all of a list of features. It is further understood that the specification is to be considered as a whole and not with reference to a single feature or design element alone.

Claims

1. A seed screening device comprising a screening frame (1) and a screen assembly (2), characterized in that: The screen assembly (2) is connected at the bottom end of the screening frame (1), one end of the screening frame (1) is fixedly connected with a vibrating motor (12), both sides of the screening frame (1) are connected with elastic support seats (3), and the screen assembly (2) is provided with an adjustable mesh; The screen assembly (2) comprises a fixed outer screen (21) and a movable inner screen (22), the movable inner screen (22) is tightly attached to the lower surface of the fixed outer screen (21), the fixed outer screen (21) is provided with a plurality of outer screen mesh holes (24), the movable inner screen (22) is provided with a plurality of inner screen mesh holes (26), and the outer side of the fixed outer screen (21) is connected with a screen limiting frame (23), the screen limiting frame (23) is connected with the bottom opening part of the screening frame (1), and the movable inner screen (22) is movably connected with the fixed outer screen (21) along the diagonal direction.

2. The seed screening device of claim 1, wherein: The upper end opening of the screening frame (1) is connected with a feeding hopper (11), and the feeding hopper (11) is in the shape of a bell mouth.

3. The seed screening device of claim 1, wherein: One corner of the movable inner screen (22) is slidably connected with a guide rod (27), the guide rod (27) penetrates one corner of the screen limiting frame (23), and the rod axis of the guide rod (27) overlaps the diagonal line of the movable inner screen (22); the other corner of the movable inner screen (22) is rotatably connected with a threaded adjusting rotating rod (28), the threaded adjusting rotating rod (28) penetrates the other corner of the screen limiting frame (23) in a threaded manner, and the rod axis of the threaded adjusting rotating rod (28) overlaps the rod axis of the guide rod (27).

4. The seed screening device of claim 3, wherein: The other two corners of the movable inner screen (22) are provided with limiting holes (29), the inner sides of the other two corners of the screen limiting frame (23) are connected with limiting rods (25), the rod bodies of the limiting rods (25) are inserted into the limiting holes (29), and the opening directions of the limiting holes (29) and the connection directions of the limiting rods (25) are parallel to the movement path of the movable inner screen (22).

5. The seed screening device of claim 4, wherein: The two perpendicular edges of one of the outer screen mesh holes (24) of the fixed outer screen (21) are provided with scale lines (210), and the scale lines (210) are located on the upper surface of the fixed outer screen (21).

6. The seed screening device of claim 1, wherein: The lower portion of the screening frame (1) is provided with a bottom plate (6), the lower end of the elastic support seat (3) is fixedly connected with a support plate (5), and the support plate (5) is vertically connected to the bottom plate (6).

7. The seed screening device of claim 6, wherein: The lower portion of the screening frame (1) is also provided with a collecting hopper (4), the collecting hopper (4) is fixedly connected with the inner side plate surfaces of the two support plates (5), and the bottom plate (6) movably accommodates a storage box (7) thereon, and the storage box (7) is located directly below the collecting hopper (4).

8. The seed screening device of claim 1, wherein: The side surface of the elastic support seat (3) close to the screening frame (1) is provided with a support groove (31), and a support block (34) is movably accommodated in the support groove (31), and the support block (34) is fixedly connected with the outer side wall of the screening frame (1).

9. The seed screening device of claim 8, wherein: A connecting rod (32) is vertically connected in the support groove (31), the rod body of the connecting rod (32) penetrates through a support block (34), a compression spring (33) is further sleeved on the rod body of the connecting rod (32), the compression spring (33) is respectively located on the upper side and the lower side of the support block (34), and the compression spring (33) is in a compressed state.

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