Screening device for rice breeding

Abstract

The utility model relates to the field of breeding, in particular to a screening device for rice breeding, and aims to solve the technical problem that the flotation effect is very poor due to the fact that rice seeds are wrapped with a large amount of gas to form bubbles and drive the seeds to float after entering the water, the bottom of a flotation tank is communicated with a feeding pipe, and the upper end of the feeding pipe is communicated with a hopper; a conveying shaft is concentrically and rotationally connected into the feeding pipe and connected with spiral blades, the spiral blades make contact with the inner wall of the feeding pipe, the spiral blades are higher than the overflow opening, a sliding rail is connected to the inner wall of the middle of the flotation tank, a vibration grid is slidably connected into the sliding rail and slides on the sliding rail in a reciprocating mode through a vibration mechanism, and the bottom of the flotation tank communicates with a conveying mechanism. The conveying mechanism can convey and discharge the precipitated seeds out of the flotation tank, the seeds are conveyed to the bottom of the flotation tank through spiral blades, under the action of buoyancy, the wizened seeds float upwards with the seeds adhering to the bubbles, the seeds make contact with the vibrating grating to enable the bubbles to be separated, the full seeds fall down, and the wizened seeds rise to complete flotation.

Description

Technical Field

[0001] The utility model relates to the breeding field, in particular to a screening device for rice breeding. Background Art

[0002] Rice seed screening is an important agricultural technology process, which involves removing impurities from seeds, such as sand and gravel, barnyard grass seeds, etc., to ensure the purity of sowing and improve sowing efficiency. In recent years, with the development of science and technology, automated and mechanized seed screening equipment has begun to be widely used. These devices can effectively improve the speed and accuracy of seed screening, reduce labor costs, and also reduce the risk of seed damage.

[0003] The prior art uses flotation to screen rice seeds. However, after the rice seeds are put into water, they entrain a large amount of gas to form bubbles, which drive the seeds to float, resulting in a very poor flotation effect. The utility model solves the above problem. Utility Model Content

[0004] The utility model aims to solve the technical problem that the prior art uses flotation to screen rice seeds, but after the rice seeds are put into water, a large amount of gas is entrained to form bubbles, which drives the seeds to float, resulting in a very poor flotation effect, and further provides a screening device for rice breeding.

[0005] A screening device for rice breeding comprises: a flotation tank, an overflow port is provided on the upper side wall of the flotation tank, a feed pipe is connected to the bottom of the flotation tank, a hopper is connected to the upper end of the feed pipe, a conveying shaft is connected to the feed pipe for coaxial rotation, the conveying shaft is connected to a spiral blade, the spiral blade contacts the inner wall of the feed pipe, the spiral blade is higher than the overflow port, a slide rail is connected to the inner wall of the middle part of the flotation tank, a vibration grille is slidably connected to the slide rail, the vibration grille reciprocates on the slide rail through a vibration mechanism, and a conveying mechanism is connected to the bottom of the flotation tank, and the conveying mechanism can convey the precipitated seeds out of the flotation tank.

[0006] Furthermore, the vibration mechanism includes a bearing seat, a rotating shaft is rotatably connected inside the bearing seat, a turntable is connected to the lower end of the rotating shaft, a shift rod is eccentrically connected to the lower surface of the turntable, and the shift rod is inserted into the gap of the vibration grid.

[0007] Furthermore, the conveying mechanism includes a conveying shell, which is connected to the lower part of the flotation tank. The conveying shell is L-shaped. A discharge port is provided at the top of the vertical section of the conveying shell, and the discharge port is higher than the overflow port. A conveying roller is rotatably connected in the conveying shell, and the conveying roller cooperates with the conveying belt for transmission. Shaping grooves are provided on both sides of the conveying belt, and a shaping sheet is inserted into the bending part of the conveying belt in the shaping groove. The shaping sheet is connected to the inner wall of the conveying shell. The conveying roller cooperates with the shaping sheet to make the shape of the conveying belt consistent with the conveying shell. A conveying plate is connected to the outside of the conveying belt, and the conveying plate is in contact with the inner wall of the conveying shell. A hole is provided on the conveying plate, and the hole diameter is smaller than the minimum diameter of the rice seeds. The side wall of the conveying shell at the discharge port is rotatably connected to the shaft end of a brush roller, and bristles are connected to the brush roller. The bristles are located on one side of the upper end of the conveying belt and in contact with the conveying belt.

[0008] Beneficial effects of the utility model:

[0009] 1. The seeds are transported to the bottom of the flotation tank through the spiral blades. Under the action of buoyancy, the shriveled seeds and the seeds with bubbles adhered to them float up. The seeds come into contact with the vibrating grid to separate the bubbles. The plump seeds fall down and the shriveled seeds rise up to complete the flotation.

[0010] 2. Since the spiral blade is higher than the overflow port, the upper seeds are pressed into the water and drive the lower seeds into the flotation tank, and the buoyancy will not affect the feed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0012] Figure 2 This is a schematic diagram of the structure section of the utility model Figure 1 ;

[0013] Figure 3 This is a schematic diagram of the structure section of the utility model Figure 2 ;

[0014] Figure 4 It is an exploded schematic diagram of the utility model structure.

[0015] In the figure: flotation tank 1; overflow port 2; feed pipe 3; hopper 4; conveying shaft 5; spiral blade 6; slide rail 7; vibration grid 8; vibration mechanism 9; bearing seat 91; rotating shaft 92; turntable 93; lever 94; conveying mechanism 10; conveying shell 101; discharge port 102; conveying roller 103; conveying belt 104; shaping groove 105; conveying plate 106; shaping sheet 107; brush roller 108; bristles 109. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] The rotational connection described in this device refers to the process of baking the bearing on the shaft, providing a spring retaining ring groove on the shaft or the shaft hole, and clamping the elastic retaining ring in the retaining ring groove to achieve axial fixation of the bearing and realize rotation; the articulation refers to a connection method that is active on connecting parts such as hinges, pins and short shafts.

[0018] The utility model will be described in detail below with reference to the accompanying drawings.

[0019] Embodiment 1:

[0020] The following is combined with Figure 1-4 The present embodiment describes a screening device for rice breeding, comprising: a flotation tank 1, an overflow port 2 is provided on the upper side wall of the flotation tank 1, a feed pipe 3 is connected to the bottom of the flotation tank 1, a hopper 4 is connected to the upper end of the feed pipe 3, a conveying shaft 5 is connected to the feed pipe 3 for coaxial rotation, the conveying shaft 5 is connected to a spiral blade 6, the spiral blade 6 is in contact with the inner wall of the feed pipe 3, the spiral blade 6 is higher than the overflow port 2, a slide rail 7 is connected to the inner wall of the middle of the flotation tank 1, a vibration grille 8 is slidably connected to the slide rail 7, the vibration grille 8 reciprocates on the slide rail 7 through a vibration mechanism 9, and a conveying mechanism 10 is connected to the bottom of the flotation tank 1, and the conveying mechanism 10 can convey the precipitated seeds out of the flotation tank 1;

[0021] Water is continuously injected into the flotation tank 1, and the rice seeds are injected into the hopper 4. The seeds enter the feed pipe 3 through the hopper 4, and the conveying shaft 5 drives the spiral blade 6 to rotate. Since the spiral blade 6 is higher than the overflow port 2, the upper seeds are pressed into the water in the feed pipe 3 to drive the lower seeds into the flotation tank 1. The buoyancy will not affect the feeding. After the seeds enter the flotation tank 1, the full seeds sink, and the adhered bubbles and the shriveled seeds float. The floating seeds contact the vibration grid 8, and the vibration mechanism 9 drives the vibration grid 8 to slide back and forth on the slide rail 7. The vibrating vibration grid 8 collides with the seeds adhered to the bubbles to separate the bubbles from the seeds, and the full seeds fall and the shriveled seeds rise to complete the flotation. The sunken full seeds are transported by the conveying mechanism 10 and discharged from the flotation tank 1.

[0022] The vibration mechanism 9 includes a bearing seat 91, a rotating shaft 92 is rotatably connected in the bearing seat 91, a rotating disk 93 is connected to the lower end of the rotating shaft 92, a lever 94 is eccentrically connected to the lower surface of the rotating disk 93, and the lever 94 is inserted into the gap of the vibration grid 8;

[0023] The power of the rotating shaft 92 is turned on, and the rotating shaft 92 drives the rotating disk 93 to rotate. The rotating disk 93 drives the lever 94 to insert into the gap of the vibration grille 8 to drive the vibration grille 8 to slide along the slide rail 7 to achieve vibration.

[0024] The conveying mechanism 10 includes a conveying shell 101, which is connected to the lower part of the flotation tank 1. The conveying shell 101 is L-shaped. A discharge port 102 is provided at the top of the vertical section of the conveying shell 101. The discharge port 102 is higher than the overflow port 2. A conveying roller 103 is rotatably connected in the conveying shell 101. The conveying roller 103 cooperates with a conveying belt 104 for transmission. Shaping grooves 105 are provided on both sides of the conveying belt 104. Shaping sheets 107 are inserted into the bending part of the conveying belt 104 in the shaping grooves 105. The shaping sheets 107 are connected to the conveying shell 101. 01 is connected to the inner wall, the conveying roller 103 cooperates with the shaping sheet 107 to make the shape of the conveying belt 104 consistent with the conveying shell 101, the conveying belt 104 is connected to the outside with a conveying plate 106, the conveying plate 106 is in contact with the inner wall of the conveying shell 101, and a hole is provided on the conveying plate 106, the hole diameter is smaller than the minimum diameter of the rice seeds, and the side wall at the discharge port 102 of the conveying shell 101 is rotatably connected with the shaft end of the brush roller 108, and the brush roller 108 is connected with bristles 109, which are located on one side of the upper end of the conveying belt 104 and in contact with the conveying belt 104;

[0025] The sunken full seeds fall on the upper belt of the conveyor belt 104, and are driven by the conveyor plate 106 to be transported to the lower part of the lower belt of the conveyor belt 104, and then rise along the vertical section of the conveyor shell 101 and be discharged through the discharge port 102. The rotation of the brush roller 108 drives the bristles 109 to rotate, brushing the seeds on the conveyor plate 106 off and preventing the holes of the conveyor plate 106 from being blocked. Since the holes of the conveyor plate 106 are smaller than the minimum diameter of the rice seeds, water can flow down through the gap between the conveyor belt 104 and the conveyor shell 101 and the holes of the conveyor plate 106, and will not be carried out by the conveyor plate 106.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screening device for rice breeding, comprising: A flotation tank (1), wherein an overflow port (2) is provided on the upper side wall of the flotation tank (1). The invention is characterized in that: the bottom of the flotation tank (1) is connected with a feed pipe (3), the upper end of the feed pipe (3) is connected with a hopper (4), a conveying shaft (5) is coaxially connected in rotation in the feed pipe (3), the conveying shaft (5) is connected with a spiral blade (6), the spiral blade (6) is in contact with the inner wall of the feed pipe (3), the spiral blade (6) is higher than the overflow port (2), a slide rail (7) is connected to the inner wall of the middle of the flotation tank (1), a vibration grille (8) is slidably connected in the slide rail (7), the vibration grille (8) reciprocates and slides on the slide rail (7) through a vibration mechanism (9), and the bottom of the flotation tank (1) is connected with a conveying mechanism (10), and the conveying mechanism (10) can convey the precipitated seeds out of the flotation tank (1).

2. A rice breeding screening device according to claim 1, characterized in that: The vibration mechanism (9) comprises a bearing seat (91), a rotating shaft (92) is rotatably connected inside the bearing seat (91), a rotating disk (93) is connected to the lower end of the rotating shaft (92), a shifting rod (94) is eccentrically connected to the lower surface of the rotating disk (93), and the shifting rod (94) is inserted into the gap of the vibration grid (8).

3. A rice breeding screening device according to claim 1, characterized in that: The conveying mechanism (10) comprises a conveying shell (101), the conveying shell (101) is connected to the lower part of the flotation tank (1), the conveying shell (101) is L-shaped, a discharge port (102) is provided at the top of the vertical section of the conveying shell (101), the discharge port (102) is higher than the overflow port (2), a conveying roller (103) is rotatably connected inside the conveying shell (101), the conveying roller (103) cooperates with a conveying belt (104) for transmission, shaping grooves (105) are provided on both sides of the conveying belt (104), shaping sheets (107) are inserted into the shaping grooves (105) at the bending part of the conveying belt (104), and the shaping sheets (107) are connected to the conveying shell (101). The conveyor belt (104) is connected to the inner wall of the shell (101), the conveying roller (103) cooperates with the shaping sheet (107) to make the shape of the conveying belt (104) consistent with the conveying shell (101), the conveying belt (104) is connected to the outside with a conveying plate (106), the conveying plate (106) is in contact with the inner wall of the conveying shell (101), a hole is provided on the conveying plate (106), the hole diameter is smaller than the minimum diameter of the rice seeds, the side wall at the discharge port (102) of the conveying shell (101) is rotatably connected with the shaft end of the brush roller (108), the brush roller (108) is connected with bristles (109), the bristles (109) are located on one side of the upper end of the conveying belt (104) and are in contact with the conveying belt (104).

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