CN111165130A - Centrifugal high-speed seed sowing device - Google Patents
Centrifugal high-speed seed sowing device Download PDFInfo
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- CN111165130A CN111165130A CN202010132572.0A CN202010132572A CN111165130A CN 111165130 A CN111165130 A CN 111165130A CN 202010132572 A CN202010132572 A CN 202010132572A CN 111165130 A CN111165130 A CN 111165130A
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- seed
- sowing
- wheel
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/20—Parts of seeders for conducting and depositing seed
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Abstract
The invention particularly relates to a centrifugal high-speed seed sowing device, which solves the problems of poor sowing quality and low efficiency of the existing sowing type seed sowing device. A seed sowing wheel is arranged between the left support frame and the right support frame, and a seed limiting box and a seed sowing hole are arranged in the seed sowing wheel; the seed blocking sleeve is sleeved on the seed discharging wheel, a seed protecting hole is formed in the seed blocking sleeve, a seed discharging shell is sleeved on the seed blocking sleeve, and a seed outlet hole is formed in the lower end of the seed discharging shell; the right end of the seed blocking sleeve is provided with an adjusting disc, a seed conveying pipe is arranged between the seed box and the seed limiting box, the center of the left end of the seed discharging wheel is provided with a seed discharging shaft, and the left end part of the seed discharging shaft is provided with a seed discharging chain wheel. The invention greatly improves the seeding quality and the seeding efficiency.
Description
Technical Field
The invention relates to the field of agricultural machinery, in particular to a seed sowing device for a seeder, and specifically relates to a centrifugal high-speed seed sowing device.
Background
The root system of medium and small kernel crops (such as buckwheat) is shallow, and the growing period is short, so the traditional planting mode of the medium and small kernel crops is broadcast sowing. The seeds spread are disordered and have certain advantages in the aspect of lodging prevention, but the mechanical harvesting is not facilitated, and the management is labor-consuming and time-consuming.
The most important part of the seeding machine is a seed metering device which can be divided into a broadcast sowing type, a drill sowing type and a dibbling type according to a planting mode. The broadcast sowing type seeder affects various coefficients of seeds to a great extent, and has low sowing efficiency.
Disclosure of Invention
The invention provides a centrifugal high-speed seed sowing device, aiming at solving the problems of poor sowing quality and low efficiency of the existing sowing type seed sowing device.
The invention is realized by adopting the following technical scheme: a centrifugal high-speed seed sowing device comprises a seed box, a left supporting frame and a right supporting frame which are distributed left and right, a seed sowing wheel is arranged between the left supporting frame and the right supporting frame, the shape of the side wall of a cavity in the seed sowing wheel is two conical surfaces which are distributed left and right, a seed limiting box which is in clearance fit with the lower side wall of the seed sowing wheel and is provided with an opening at the lower end is arranged in the seed sowing wheel, and seed sowing holes which are uniformly distributed and correspond to the left and right directions are arranged at the; the seed discharging wheel is sleeved with a seed blocking sleeve which is in clearance fit with the seed discharging wheel, the seed blocking sleeve is provided with a seed protecting hole corresponding to the position of the seed discharging hole, the seed blocking sleeve is sleeved with a seed discharging shell which is in clearance fit with the seed blocking sleeve and has an open structure at the right end face, the left side wall of the seed discharging shell is connected with a left supporting frame through a bolt, and the lower end of the seed discharging shell is provided with a seed outlet hole corresponding to the left position and the right position of the seed protecting hole; the right end of the seed blocking sleeve is provided with an adjusting disc which is clamped with the seed blocking sleeve and is connected with the seed discharging wheel through a bolt, a seed conveying pipe which is communicated with the seed box and the seed limiting box is arranged between the seed box and the seed limiting box, the center of the left end of the seed discharging wheel is provided with a seed discharging shaft which is connected with the seed discharging wheel, and the left end part of the seed discharging shaft is provided with a seed discharging chain wheel.
When the seed metering operation is carried out, the driving mechanism drives the seed metering chain wheel to rotate, so as to drive the seed metering shaft and the seed metering wheel to rotate in sequence, meanwhile, seeds enter the seed limiting box from the seed box through the seed conveying pipe, then fall into a space formed by the seed limiting box and the seed metering wheel to rotate, and in the rotating process, the seeds under the action of centrifugal force are pressed into the seed metering holes and rotate along with the seed metering wheel to complete seed flushing; the seeds are pressed into the seed protection holes to protect the seeds under the action of centrifugal force; when the seeds rotate to the positions of the seed outlets, the seeds pass through the seed outlets under the action of centrifugal force due to the absence of the supporting function of the seeding shell to complete the seeding process; during the rotation of the seed wheel, the excessive seeds near the seed hole are scraped by the seed limiting box, so when the centrifugal force is large enough, the quantity of the discharged seeds is the seeds in the seed hole. The problem of current broadcast sowing formula seed metering ware seeding have seeding quality poor and inefficiency is overcome.
The seed feeding wheel has right end with central seed feeding shaft, sealing bearing adhered to the regulating disc and set between the seed feeding shaft and the regulating disc, spring ring adhered to the sealing bearing outer ring and connected to the seed feeding shaft, and shaft sleeve in clearance fit with the sealing bearing outer ring and adhered to the sealing bearing inner ring and connected to the right support frame via screw bolt.
The structural design ensures that seeds enter the rotary seed sowing wheel through the adjusting disc and the seed sowing pipe keeps still.
The number of the seed protection holes in the circumferential direction of the seed blocking sleeve is three, six or twelve, a plurality of clamping grooves are uniformly distributed on the right side wall of the seed blocking sleeve, and clamping blocks matched with the clamping grooves are arranged on the adjusting disc.
The seed blocking sleeve is provided with different numbers of seed protecting holes, and the number of discharged seeds can be changed by rotating the seed blocking sleeve, so that the seed blocking sleeve is matched with different advancing speeds of tractors and plays a role in adjusting the discharge capacity; the adjustment disc and the seed blocking sleeve are matched to form a whole body to realize synchronous rotation, and the disassembly is convenient.
A circular hole is formed in the right end face of the seed sowing wheel, a columnar sleeve which is integrated with the seed sowing wheel and extends inwards is arranged in the middle of the left end face of the seed sowing wheel, and a transmission sleeve matched with the seed sowing shaft is fixed at the inner end of the columnar sleeve; the middle part of the left end face of the seed metering shell is provided with a cylindrical sleeve I which is integrated with the seed metering shell and extends inwards, the cylindrical sleeve I is positioned at the inner side of the cylindrical sleeve, a bearing sleeved on the seed metering shaft is arranged in the cylindrical sleeve I, and the cylindrical sleeve I is provided with a limiting snap ring which is tightly attached to the left side wall and the right side wall of the bearing.
The length of the seed outlet is 39mm, the central angle corresponding to the seed outlet is 30 degrees, and the position angle corresponding to the seed outlet is 20 degrees.
The condition that the seeds do not touch the other side of the seed outlet after being thrown out is as follows:
in the formula:
t-time of movement(s) when seeds are discharged;
r-radius of the seed wheel (mm);
h-seed-resistant sleeve thickness (mm);
l-seed length (mm);
omega-the rotational speed of the seed (rad/s);
theta-the central angle (°) corresponding to the seed outlet;
h-shell thickness (mm);
the length of the seed outlet hole is required to meet the following conditions:
in the formula: delta theta is the position angle corresponding to the seed outlet;
by calculating: l is 39mm, θ is 30 °, Δ θ is 20 °.
The invention has reasonable and reliable structural design, uniformly broadcasts the seeds to the field by utilizing centrifugal force, greatly improves the sowing quality, realizes high-speed sowing of the seeds, reduces the labor cost, improves the sowing efficiency, meets the consistent variation coefficient of each row discharge capacity of the seeds, the consistent variation coefficient of the total discharge capacity and the crushing rate, and meets the performance index requirements.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the seed wheel shown in FIG. 1;
FIG. 3 is a schematic structural view of the seed-stopping sleeve of FIG. 1;
FIG. 4 is a schematic structural view of the adjustment plate of FIG. 1;
FIG. 5 is a schematic view of the seed metering housing of FIG. 1.
In the figure: 1-seed box, 2-left support frame, 3-right support frame, 4-seed sowing wheel, 5-seed limiting box, 6-seed sowing hole, 7-seed blocking sleeve, 8-seed protecting hole, 9-seed sowing shell, 10-seed outlet hole, 11-adjusting disc, 12-seed conveying pipe, 13-seed sowing shaft, 14-seed sowing chain wheel, 15-seed conveying shaft, 16-sealing bearing, 17-spring retainer ring, 18-shaft sleeve, 19-clamping groove, 20-clamping block, 21-round hole, 22-columnar sleeve, 23-transmission sleeve, 24-columnar sleeve I, 25-bearing and 26-limiting clamping ring.
Detailed Description
A centrifugal high-speed seed sowing device comprises a seed box 1, a left supporting frame 2 and a right supporting frame 3 which are distributed left and right, a seed sowing wheel 4 is arranged between the left supporting frame 2 and the right supporting frame 3, the shape of the side wall of a cavity inside the seed sowing wheel 4 is two conical surfaces which are distributed left and right, a seed limiting box 5 which is in clearance fit with the lower side wall of the seed sowing wheel 4 and is provided with an opening at the lower end is arranged in the seed sowing wheel 4, and seed sowing holes 6 which are uniformly distributed and correspond to the left and right directions are arranged at the;
the seed discharging wheel 4 is sleeved with a seed blocking sleeve 7 which is in clearance fit with the seed discharging wheel, a seed protecting hole 8 which corresponds to the position of the seed discharging hole 6 is arranged on the seed blocking sleeve 7, the seed discharging shell 9 which is in clearance fit with the seed blocking sleeve 7 and has an open structure at the right end face is sleeved on the seed blocking sleeve 7, the left side wall of the seed discharging shell 9 is connected with the left supporting frame 2 through a bolt, and the lower end of the seed discharging shell 9 is provided with a seed outlet 10 which corresponds to the left and right positions of the seed protecting hole 8;
the right end of the seed blocking sleeve 7 is provided with an adjusting disc 11 which is clamped with the seed blocking sleeve and is connected with the seed sowing wheel 4 through a bolt, a seed conveying pipe 12 which is communicated with the seed box 1 and the seed limiting box 5 is arranged between the seed box 1 and the seed limiting box 5, the center of the left end of the seed sowing wheel 4 is provided with a seed sowing shaft 13 which is connected with the seed sowing shaft, and the left end part of the seed sowing shaft 13 is provided with a seed sowing chain wheel 14.
The right end center of the seed sowing wheel 4 is provided with a seed conveying shaft 15, a sealing bearing 16 which is tightly attached to the adjusting disc 11 is arranged between the seed conveying shaft 15 and the adjusting disc 11, the left end face of the outer ring of the sealing bearing 16 is provided with a spring retainer ring 17 which is tightly attached to the sealing bearing and clamped on the seed conveying shaft 15, the seed conveying shaft 15 is sleeved with a shaft sleeve 18 which is in clearance fit with the seed conveying shaft and tightly attached to the inner ring of the sealing bearing 16, and the shaft sleeve 18 is connected with the right support frame 3 through.
The number of the seed protection holes in the circumferential direction of the seed blocking sleeve 7 is three, six or twelve, a plurality of clamping grooves 19 are uniformly distributed on the right side wall of the seed blocking sleeve 7, and clamping blocks 20 matched with the clamping grooves 19 are arranged on the adjusting disc 11.
A circular hole 21 is formed in the right end face of the seed sowing wheel 4, a columnar sleeve 22 which is integrated with the seed sowing wheel 4 and extends inwards is arranged in the middle of the left end face of the seed sowing wheel 4, and a transmission sleeve 23 matched with the seed sowing shaft 13 is fixed at the inner end of the columnar sleeve 22; a columnar sleeve I24 which is integrated with the seed-metering shell 9 and extends inwards is arranged in the middle of the left end face of the seed-metering shell 9, a columnar sleeve I24 is positioned at the inner side of the columnar sleeve 22, a bearing 25 which is sleeved on the seed-metering shaft 13 is arranged in the columnar sleeve I24, and a limiting snap ring 26 which is tightly attached to the left side wall and the right side wall of the bearing 25 is arranged on the columnar sleeve I24.
The length of the seed outlet 10 is 39mm, the central angle corresponding to the seed outlet 10 is 30 degrees, and the position angle corresponding to the seed outlet 10 is 20 degrees.
In the specific implementation process, the centrifugal force applied to the seeds in the seed sowing wheel 4 is as follows:
Fseparation device＝mω2r＝m(2πn)2r；
In the formula:
m-mass of seeds (g);
n-the rotational speed (r/min) of the seeding shaft;
the ratio of centrifugal force to gravity is:
when Y is less than or equal to 1, the centrifugal force is less than or equal to the gravity, and the seeds in the seeding holes 6 fall into the seeding wheel 4 when the seeding holes rotate to the upper part, so that the seeds cannot be discharged; when Y is larger than 1, the centrifugal force is larger than the gravity, the seeds in the seed discharging holes 6 can pass through the highest point of the seed discharging wheel 4 theoretically, but in the test, when the centrifugal force is slightly larger than the gravity, the seed discharging effect is not good, particularly, the variation coefficient of the consistency of the discharge capacity of each row does not meet the requirement, when the rotating speed is 150 r/min-190 r/min, the centrifugal force can completely press the seeds, and the variation coefficient of the consistency of the discharge capacity of each row meets the requirement.
Claims (5)
1. A centrifugal high-speed seed sowing device is characterized in that: the seed sowing device comprises a seed box (1), a left support frame (2) and a right support frame (3) which are distributed left and right, wherein a seed sowing wheel (4) is arranged between the left support frame (2) and the right support frame (3), the side wall of a cavity inside the seed sowing wheel (4) is shaped into two conical surfaces which are distributed left and right, a seed limiting box (5) which is in clearance fit with the lower side wall of the seed sowing wheel and is provided with an opening at the lower end is arranged in the seed sowing wheel (4), and seed sowing holes (6) which are uniformly distributed and correspond to the left and right directions are;
the seed discharging wheel (4) is sleeved with a seed blocking sleeve (7) in clearance fit with the seed discharging wheel, a seed protecting hole (8) corresponding to the position of the seed discharging hole (6) is formed in the seed blocking sleeve (7), a seed discharging shell (9) in clearance fit with the seed blocking sleeve (7) and of which the right end face is of an open structure is sleeved on the seed blocking sleeve (7), the left side wall of the seed discharging shell (9) is connected with the left support frame (2) through a bolt, and the lower end of the seed discharging shell (9) is provided with a seed discharging hole (10) corresponding to the left position and the right position of the seed protecting hole (8);
the right end of the seed blocking sleeve (7) is provided with an adjusting disc (11) which is clamped with the seed blocking sleeve and is connected with the seed sowing wheel (4) through a bolt, a seed conveying pipe (12) which is communicated with the seed box (1) and the seed limiting box (5) is arranged between the seed box and the seed limiting box, the center of the left end of the seed sowing wheel (4) is provided with a seed sowing shaft (13) which is connected with the seed sowing shaft, and the left end part of the seed sowing shaft (13) is provided with a seed sowing chain wheel (.
2. A centrifugal high speed seed meter according to claim 1 wherein: the seed sowing wheel (4) is characterized in that a seed conveying shaft (15) is arranged at the center of the right end of the seed sowing wheel (4), a sealing bearing (16) tightly attached to the adjusting disc (11) is arranged between the seed conveying shaft (15) and the adjusting disc (11), a spring retainer ring (17) tightly attached to the sealing bearing (16) and clamped on the seed conveying shaft (15) is arranged on the left end face of the outer ring of the sealing bearing (16), a shaft sleeve (18) which is in clearance fit with the seed conveying shaft and tightly attached to the inner ring of the sealing bearing (16) is sleeved on the seed conveying shaft (15), and the shaft sleeve (18.
3. A centrifugal high speed seed meter according to claim 1 wherein: the number of the seed protection holes in the circumferential direction of the seed blocking sleeve (7) is three, six or twelve, a plurality of clamping grooves (19) are uniformly distributed on the right side wall of the seed blocking sleeve (7), and clamping blocks (20) matched with the clamping grooves (19) are arranged on the adjusting disc (11).
4. A centrifugal high speed seed meter according to claim 1 wherein: a circular hole (21) is formed in the right end face of the seed sowing wheel (4), a columnar sleeve (22) which is integrated with the seed sowing wheel (4) and extends inwards is arranged in the middle of the left end face of the seed sowing wheel (4), and a transmission sleeve (23) matched with the seed sowing shaft (13) is fixed at the inner end of the columnar sleeve (22); a columnar sleeve I (24) which is integrated with the seed discharging shell (9) and extends inwards is arranged in the middle of the left end face of the seed discharging shell, the columnar sleeve I (24) is positioned on the inner side of the columnar sleeve (22), a bearing (25) sleeved on the seed discharging shaft (13) is arranged in the columnar sleeve I (24), and a limiting snap ring (26) tightly attached to the left side wall and the right side wall of the bearing (25) is arranged on the columnar sleeve I (24).
5. A centrifugal high speed seed meter according to claim 1 wherein: the length of the seed outlet (10) is 39mm, the central angle corresponding to the seed outlet (10) is 30 degrees, and the position angle corresponding to the seed outlet (10) is 20 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010132572.0A CN111165130A (en) | 2020-02-29 | 2020-02-29 | Centrifugal high-speed seed sowing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010132572.0A CN111165130A (en) | 2020-02-29 | 2020-02-29 | Centrifugal high-speed seed sowing device |
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| Publication Number | Publication Date |
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| CN111165130A true CN111165130A (en) | 2020-05-19 |
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| CN202010132572.0A Pending CN111165130A (en) | 2020-02-29 | 2020-02-29 | Centrifugal high-speed seed sowing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111742661A (en) * | 2020-07-10 | 2020-10-09 | 中国农业大学 | Mechanical self-suction mechanical seed-shooting and seeding device |
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2020
- 2020-02-29 CN CN202010132572.0A patent/CN111165130A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111742661A (en) * | 2020-07-10 | 2020-10-09 | 中国农业大学 | Mechanical self-suction mechanical seed-shooting and seeding device |
| CN111742661B (en) * | 2020-07-10 | 2021-07-27 | 中国农业大学 | Mechanical self-suction mechanical seed-shooting and seeding device |
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