CN111480425A - Positive and negative air pressure combined duckbilled precision dibbler - Google Patents
Positive and negative air pressure combined duckbilled precision dibbler Download PDFInfo
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- CN111480425A CN111480425A CN202010261666.8A CN202010261666A CN111480425A CN 111480425 A CN111480425 A CN 111480425A CN 202010261666 A CN202010261666 A CN 202010261666A CN 111480425 A CN111480425 A CN 111480425A
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- duckbilled
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Classifications
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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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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C5/00—Making or covering furrows or holes for sowing, planting or manuring
- A01C5/04—Machines for making or covering holes for sowing or planting
Abstract
The invention discloses a positive and negative air pressure combined duckbilled precision dibbler, which comprises a fixed shaft, an air chamber cavity, a seed sowing wheel, a dibbling rotary disc, a seed charging chamber cavity and a seed guide groove, wherein the air chamber cavity is inserted from one end of the fixed shaft and is arranged on the fixed shaft; the invention combines the seed discharging principle of negative pressure seed suction and positive pressure seed blowing with the duckbilled hole forming principle, has simple structure and reliable operation, can realize the precise hole sowing of small-grain-size seeds, has high sowing precision, can reduce the situations of seed clamping and seed injury, has small damage to the seeds, saves the seeds, can complete the operations of punching, seed suction and seed discharging on a film at one time, has high sowing efficiency, low operation intensity, convenient operation, time saving and labor saving.
Description
Technical Field
The invention belongs to the technical field of agricultural sowing machinery, and particularly relates to a positive and negative air pressure combined duckbilled precision dibbler.
Background
The existing film covering seeder mainly comprises two modes, one mode is a hole sowing operation mode under a film of firstly sowing and then spreading the film, and the other mode is a hole sowing operation mode of firstly spreading the mulching film and punching the film for sowing after punching the seedbed on which the mulching film is spread.
Under-film hole sowing usually needs to manually break the film of the seedlings after emergence of seedlings, the process is complex, the labor capacity is large, for example, the Chinese patent with the application number of 20181120763.1 discloses a synchronous on-film punching device for under-film hole sowing operation, namely, when the film is spread after sowing, a mulching film to be laid is punctured through a punching conical nail, and due to certain error of the seed falling position of the seeds, the synchronism of punching on the seed holes and the film cannot be accurately ensured.
The hole sowing device for hole sowing operation by punching holes on the film generally adopts a mechanical seed sowing structure, mainly realizes the film mulching sowing of large and medium seeds such as corn, cotton, peanut and the like, but is not suitable for small-grain-size seeds such as rape, radish, Chinese cabbage and the like, has poor applicability and large seed throwing difficulty of the hole sowing device, because the small-grain-size seeds have small size, the conditions of seed clamping and seed injury are easy to occur in the sowing process, the seeds are easy to break, the sowing precision is low, for example, Chinese patent with application number of 201510775511.5 discloses a rape single-row precision hole sowing machine suitable for film rape sowing and film corn rape interplanting sowing operation, rape seeds in a seed box are filled in hole holes of a seed sowing wheel under the action of gravity, the seeds in the hole holes sequentially pass through a seed throwing tube and a seed guiding plate and finally enter a duck-bill-shaped hole forming device, when the hole forming device cuts the film to form hole, the hole forming device is opened under the compression of a spring, rape seeds fall into the hole to complete the seeding operation, the seeding element of the hole seeding device adopts a hole wheel type seeding device, the rape seeds are easy to damage in the operation, the seed damage rate is high, and the single seed taking precision cannot be controlled.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a positive and negative air pressure combined duckbill type dibbler for precise hole sowing of small-particle-size seeds, which has the advantages of precise hole sowing, uniform and ordered seed sowing, difficult seed crushing, and integration of punching and sowing on a mulching film; in addition, in the invention, the small-particle-size seed embodiment takes the rape as an example, so that the precise hole sowing of the small-particle-size seeds can be realized, the phenomena of seed blockage and seed damage are reduced, the seeds are saved, and the sowing operation efficiency is improved.
In order to achieve the purpose, the positive and negative air pressure combined duckbilled precision dibbler comprises a fixed shaft, an air chamber cavity, a seed sowing wheel, a dibbling rotary disc, a seed filling chamber cavity and a seed guide groove, wherein the air chamber cavity is inserted from one end of the fixed shaft and is arranged on the fixed shaft;
the air chamber cavity comprises a cavity inner cylinder, a large end cover sleeved at one end of the peripheral circular surface of the cavity inner cylinder, a small end cover sleeved at the other end of the peripheral circular surface of the cavity inner cylinder, and a positive pressure cavity air pipe and a negative pressure cavity air pipe which are uniformly arranged on the large end cover, the small end cover is inserted into the inner cavity of the second cavity of the seed sowing wheel until the inner end surface of the peripheral wall of the large end cover abuts against the end surface of the inner cavity wall of the second cavity of the seed sowing wheel, and the air chamber cavity and the seed sowing wheel enclose to form a closed air chamber; three cavity clapboards are uniformly arranged on the peripheral circular surface of the cavity inner cylinder along the circumferential direction, and each cavity clapboard is positioned between the large end cover and the small end cover to divide the closed air chamber into a positive pressure area, a negative pressure area and a non-pressure area; the negative pressure cavity air pipe on the big end cover is communicated with the negative pressure area, and the positive pressure cavity air pipe on the big end cover is communicated with the positive pressure area.
Furthermore, a circle of slot is arranged on the circumferential wall of the big end cover along the circumferential direction and is in clearance fit with the second chamber of the seed sowing wheel.
Furthermore, the hole sowing rotary disc comprises a sowing ring, an inoculation inclined plane ring arranged on the inner circumferential surface of the sowing ring and a circle of sowing duckbill arranged on the outer circumferential surface of the sowing ring, the seed sowing wheel is connected to an outer bottom surface pressure plate of the sowing ring, seed falling ports corresponding to seed suction ports of the seed sowing wheel are circumferentially arranged on the sowing ring, and the seed falling ports on the sowing ring are connected with the sowing duckbill in a one-to-one alignment mode.
Furthermore, the inoculation inclined plane ring comprises an annular ring and a plurality of groups of inclined plane combinations uniformly arranged in the inner cavity of the annular ring along the circumferential direction, an inclined plane ring opening is formed between every two adjacent groups of inclined plane combinations, and the inclined plane ring openings and the seed dropping openings are arranged in one-to-one alignment; each group of inclined plane combination comprises two inclined planes, the width of each inclined plane is equal to that of the inner cavity, one ends of the two inclined planes in the length direction are connected in an involutory mode, the other ends of the two inclined planes in the length direction are fixed on the wall of the inner cavity, and the depth from the highest point of the two inclined planes to the wall of the inner cavity is smaller than that of the inner cavity.
Furthermore, the seed charging chamber cavity is positioned at the upper part of the seed sowing wheel and comprises a first side plate, a second side plate, an inclined plate, an arc-shaped plate and a baffle plate, and the first side plate and the second side plate are arranged in parallel; the top end face and the side face of the first side plate and the second side plate are respectively connected with the lower surface of the inclined plate and the arc-shaped plate, the baffle is horizontally inserted into the first side plate, the first side plate is installed on the big end cover, and the rotary faces of the first side plate, the second side plate, the baffle and the seed sowing wheel jointly form a seed filling chamber.
Further, the end faces, facing the side wall of the second chamber of the seed sowing wheel, of the first side plate and the second side plate are arc-shaped faces, and the diameter of each arc-shaped face is 1-2 mm larger than that of the side wall of the second chamber.
Furthermore, the inclined plate is provided with a second notch which is convenient for the adsorbed seeds to smoothly pass through the cavity of the seed filling chamber.
Furthermore, the seed guide groove is positioned at the lower part of the seed sowing wheel and is connected with the large end cover of the air chamber cavity; the seed guide groove is a hollow cuboid, the upper end and the lower end of the seed guide groove are arc-shaped openings, the upper end of the seed guide groove is communicated with a seed suction hole of the seed sowing wheel, the lower end of the seed guide groove is tangent to the inoculation inclined plane ring, and the opening of the lower end of the seed guide groove is aligned to the opening of the inoculation inclined plane ring.
Furthermore, the right end of the fixing shaft is provided with threads, the air chamber cavity is fixed on the fixing shaft through the matching of the locking nut and the threads, and the outer side cover plate is clamped on the outer circumferential circular surface of the locking nut.
Compared with the prior art, the invention has the following advantages: the invention combines the seed discharging principle of negative pressure seed suction and positive pressure seed blowing with the duckbilled hole forming principle, has simple structure and reliable operation, can realize the precise hole sowing of small-grain-size seeds, has high sowing precision, can reduce the situations of seed clamping and seed injury, has small damage to the seeds, saves the seeds, can complete the operations of punching, seed suction and seed discharging on a film at one time, has high sowing efficiency, low operation intensity, convenient operation, time saving and labor saving.
Drawings
FIG. 1 is a schematic diagram of an explosion structure of a positive and negative air pressure combined duckbilled precision dibbler of the present invention;
FIG. 2 is a schematic view of the assembly of FIG. 1;
FIG. 3 is a schematic cross-sectional view of FIG. 2;
FIG. 4 is a schematic view of the seed wheel of FIG. 1;
FIG. 5 is a schematic diagram of the air chamber cavity of FIG. 1;
FIG. 6 is a schematic view of the structure of the seeding bevel ring in FIG. 1;
fig. 7 is a schematic view of the structure of the seed filling chamber in fig. 1.
In the figure, a fixed shaft 1, an air chamber cavity 2, a locking nut 3, a seed inlet pipe 4, a closed air chamber 5, a seed sowing wheel 6, a seed charging chamber cavity 7, an outer pressure ring 8, a seeding duckbill 9, a seeding ring 10, an outer bottom surface pressure plate 11, a left end cover 12, a bearing 13, an inner pressure ring 14, a shaft shoulder 15, an inner cavity 16, a seed guide groove 17, a seeding bevel ring 18, an outer side cover plate 19, a bevel 20, a seed dropping opening 21, a second notch 22, a large end cover 201, a positive pressure cavity air pipe 202, a negative pressure cavity air pipe 203, a slot 204, a small end cover 205, a circumferential wall 206, a cavity partition plate 207, a cavity inner cylinder 208, a first cavity 601, a seed suction hole 602, a second cavity 603, a first side plate 701, a first notch 702, an arc plate 703, a bevel plate 704, a second side plate 705, a baffle 706, a bevel combination 1801.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1, 2 and 3, the positive and negative air pressure combined duckbilled precision dibbler comprises a fixed shaft 1, an air chamber cavity 2 inserted from the right end of the fixed shaft 1 and mounted on the fixed shaft 1, a seed discharging wheel 6 inserted from the left end of the fixed shaft 1 and mounted on the fixed shaft 1 through a bearing 13, a left end cover 12 connected with the left end of the seed discharging wheel 6 and used for preventing the seed discharging wheel 6 from moving left, a dibbling rotary table connected with the seed discharging wheel 6, a seed charging chamber cavity 7 and a seed guide groove 17 which are circumferentially mounted on the air chamber cavity 2, a seed inlet pipe 4 is connected with the seed charging chamber cavity 7, and meanwhile, the air chamber cavity 2 and the seed discharging wheel 6 form a closed air chamber 5.
As shown in fig. 4, the seed wheel 6 comprises a first chamber 601 and a second chamber 603, and the second chamber 603 is provided with a shaft shoulder 15 which is annularly arranged; and a plurality of groups (such as twelve groups) of seed suction holes 602 are uniformly distributed on the side wall of the second chamber 603 of the seed sowing wheel 6 in the circumferential direction, and each group of seed suction holes 602 comprises two shaped holes which are arranged side by side. In the embodiment, the diameter of the molded hole is 0.6D-0.9D, wherein D is the average geometric particle size of the small-particle-size seeds; in order to ensure that 1 to 3 rape seeds exist in each hole, two rows of shaped holes are arranged, the diameter of each shaped hole is 1.2mm, and the distance between the axial shaped holes is 10 mm.
As shown in fig. 5, the air chamber cavity 2 is an integral body, and includes a cavity inner cylinder 208, a large end cap 201 sleeved on one end of the outer circumferential surface of the cavity inner cylinder 208, a small end cap 205 sleeved on the other end of the outer circumferential surface of the cavity inner cylinder 208, and a positive pressure cavity air pipe 202 and a negative pressure cavity air pipe 203 both arranged on the large end cap 201, the small end cap 205 is inserted into the inner cavity of the second cavity 603 of the seed wheel 6 until the inner end surface of the circumferential wall of the large end cap 201 abuts against the end surface of the inner cavity wall of the second cavity 603 of the seed wheel 6, so that the air chamber cavity 2 and the seed wheel 6 enclose into a closed air chamber 5; meanwhile, three cavity partition plates 207 are uniformly arranged on the peripheral circular surface of the cavity inner cylinder 208 along the circumferential direction, and each cavity partition plate 207 is positioned between the large end cover 201 and the small end cover 205, namely, one side of each cavity partition plate 207 is attached to the bottom surface of the large end cover 201, and the other side of each cavity partition plate 207 is attached to the bottom surface of the small end cover 205, so that the closed air chamber 5 is divided into a positive pressure area, a negative pressure area and a non-pressure area; the negative pressure cavity air pipe 203 on the big end cover 201 is communicated with the negative pressure region, so that negative pressure airflow generated by the fan enters the negative pressure region through the negative pressure cavity air pipe 203, and the positive pressure cavity air pipe 202 on the big end cover 201 is communicated with the positive pressure region, so that the positive pressure airflow enters the positive pressure region through the positive pressure cavity air pipe 202. As shown in fig. 3, in order to prevent the air leakage, a circle of slots 204 are formed on the circumferential wall 206 of the large end cap 201 along the circumferential direction, and the slots are in clearance fit with the second chamber 603 of the seed sowing wheel 6, so that the air leakage is effectively prevented, and the air pressure loss and the power consumption are reduced. In this embodiment, the right end of the fixing shaft 1 is provided with a thread, the air chamber cavity 2 is fixed on the fixing shaft 1 through the matching of the locking nut 3 and the thread, and the outer cover plate 19 is clamped on the outer circumferential surface of the locking nut 3.
As shown in fig. 1 again, the hole sowing rotary disc comprises a sowing ring 10, an outer pressing ring 8 positioned on the outer end surface of the sowing ring 10, an inner pressing ring 14 positioned on the inner end surface of the sowing ring 10, a seeding bevel ring 18 arranged on the inner circumferential surface of the sowing ring 10 and a circle of sowing duckbills 9 arranged on the outer circumferential surface of the sowing ring 10, and a shaft shoulder 15 of the seed sowing wheel 6 is connected on an outer bottom surface pressing disc 11 of the sowing ring 10 through a bolt. Wherein, the seeding duckbilled includes the duckbilled of deciding with seeding circle 10 rigid coupling, with decide duckbilled articulated move the duckbilled, seeding circle 10 circumference is opened has the seed dropping mouth 21 that corresponds with seed suction hole 602, seed dropping mouth 21 on the seeding circle 10 is the one-to-one with seeding duckbilled 9 and is connected, the inner circle and the inoculation bevel circle 18 of seeding circle 10 are tangent to be connected.
As shown in fig. 6, the inoculation bevel ring 18 comprises an annular ring 1803 and a plurality of groups of bevel combinations 1801 uniformly arranged in the inner cavity 16 of the annular ring 1803 along the circumferential direction, a bevel ring opening 1802 is formed between each two adjacent groups of bevel combinations 1801, and the bevel ring openings 1802 and the seed dropping ports 21 are arranged in one-to-one alignment; each group of bevel combinations 1801 comprises two bevels 20, the width of each bevel 20 is equal to the width of the inner cavity 16, one ends of the two bevels 20 in the length direction are connected in an involution manner, the other ends of the two bevels in the length direction are fixed on the wall of the inner cavity, and meanwhile, the depth from the highest point of the two bevels to the wall of the inner cavity is smaller than the depth of the inner cavity, so that seeds falling into the inoculation bevel ring 18 can completely fall into the bevel ring opening 1802 to further fall into the seeding duckbill.
As shown in fig. 7, the seed charging chamber 7 is located above the seed discharging wheel 6, the seed charging chamber 7 includes a first side plate 701, a second side plate 705, an inclined plate 704, an arc plate 703 and a baffle 706, the first side plate 701 and the second side plate 705 are arranged in parallel, top end surfaces and side surfaces of the first side plate 701 and the second side plate 705 are respectively connected with a lower surface of the inclined plate 704 and the arc plate 703, the baffle 706 is horizontally inserted into the first side plate 701, and the first side plate 701 is mounted on the large end cover 201 through a bolt, so that the first side plate 701, the second side plate 705, the baffle 706 and a rotation surface of the seed discharging wheel 6 jointly form. The middle part of the first side plate 701 is provided with a first gap 702 communicated with the seed inlet pipe 4, and seeds in the seed box enter the seed filling chamber from the seed inlet pipe 4. In addition, the end surfaces of the first side plate 701 and the second side plate 705 facing the side wall of the second chamber 603 of the seed wheel 6 are arc-shaped surfaces, and the diameter of the arc-shaped surfaces is 1-2 mm (preferably 1mm) larger than the diameter of the side wall of the second chamber 603, so that the seed can not leak through the seed filling chamber when the seed wheel 6 rotates. When the baffle 706 is pulled out, the residual seeds in the seed filling chamber cavity 7 can be quickly removed, the seeds enter the seed filling chamber cavity 7 through the first notch 702, and the inclined plate 704 is provided with the second notch 22, so that the adsorbed seeds smoothly pass through the seed filling chamber cavity 7, and the seeds are prevented from being scraped off by the inclined plate when the seed sowing wheel rotates.
The seed guide groove 17 is positioned at the lower part of the seed sowing wheel 6 and is connected with the big end cover 201 of the air chamber cavity 2 through a bolt. The seed guide groove 17 is a hollow cuboid, the upper end and the lower end of the seed guide groove are both arc-shaped openings, the upper end of the seed guide groove 17 is communicated with the seed suction hole 602 of the seed sowing wheel 6, the lower end of the seed guide groove is tangent to the inoculation inclined plane ring 18, and the opening of the lower end of the seed guide groove is aligned to the inoculation inclined plane ring opening 1802, so that the openings among the seed guide groove 17, the inoculation inclined plane ring 18 and the seeding duckbill 9 are all arranged in a one-to-one correspondence manner to form.
One side of the side wall of the second chamber 603 of the seed sowing wheel 6 is connected with the seed filling chamber 7, the other side of the side wall of the second chamber 603 of the seed sowing wheel is connected with the closed air chamber 5, under the action of negative pressure airflow, seeds in the seed filling chamber 7 are adsorbed on a seed sucking hole in the side wall of the second chamber 603, when the adsorbed seeds on the seed sowing wheel 6 rotate to a positive pressure area, the seeds fall into the seed guiding groove 17 under the action of positive pressure airflow and self gravity and fall into a sowing duckbill along an inclined ring opening, and adsorption and separation on the seed sowing wheel 6 are completed.
When the seed suction hole on the side wall passes through the seed filling chamber, the seed suction hole adsorbs seeds under the negative pressure action of the air chamber, when the seed suction hole rotates to the positive pressure region, the seeds on the seed suction hole fall into the seed guide grooves corresponding to the positive pressure region under the action of positive pressure airflow and self gravity, and fall into the seeding duckbill along the opening of the inclined plane ring.
The invention combines the seed discharging principle of negative pressure seed suction and positive pressure seed blowing with the duckbilled hole forming principle, has simple structure and reliable operation, can realize the precise hole sowing of small-grain-size seeds, has high sowing precision, can reduce the situations of seed clamping and seed injury, has small damage to the seeds, saves the seeds, can complete the operations of punching, seed suction and seed discharging on a film at one time, has high sowing efficiency, low operation intensity, convenient operation, time saving and labor saving.
Claims (9)
1. A positive and negative air pressure combined duckbilled precision dibbler comprises a fixed shaft (1), an air chamber cavity (2) inserted from one end of the fixed shaft (1) and installed on the fixed shaft (1), a seed sowing wheel (6) inserted from the other end of the fixed shaft (1) and installed on the fixed shaft (1), a dibbling rotary disc connected with the seed sowing wheel (6), and a seed charging chamber cavity (7) and a seed guide groove (17) which are all circumferentially installed on the air chamber cavity (2); the method is characterized in that:
the air chamber cavity (2) comprises a cavity inner cylinder (208), a large end cover (201) sleeved at one end of the peripheral circular surface of the cavity inner cylinder (208), a small end cover (205) sleeved at the other end of the peripheral circular surface of the cavity inner cylinder (208), a positive pressure cavity air pipe (202) and a negative pressure cavity air pipe (203) which are uniformly arranged on the large end cover (201), the small end cover (205) is inserted into the inner cavity of the second cavity (603) of the seed wheel (6) until the inner end surface of the peripheral wall of the large end cover (201) is abutted against the end surface of the inner cavity wall of the second cavity (603) of the seed wheel (6), and the air chamber cavity (2) and the seed wheel (6) enclose to form a closed air chamber (5); three cavity clapboards (207) are uniformly arranged on the peripheral circular surface of the cavity inner cylinder (208) along the circumferential direction, and each cavity clapboard (207) is positioned between the large end cover (201) and the small end cover (205) to divide the closed air chamber (5) into a positive pressure area, a negative pressure area and a non-pressure area; a negative pressure cavity air pipe (203) on the big end cover (201) is communicated with the negative pressure area, and a positive pressure cavity air pipe (202) on the big end cover (201) is communicated with the positive pressure area.
2. The positive and negative air pressure combined duckbilled precision dibbler according to claim 1, wherein: a circle of slots (204) are formed in the circumferential wall (206) of the big end cover (201) along the circumferential direction and are in clearance fit with the second chamber (603) of the seed sowing wheel (6).
3. The positive and negative air pressure combined duckbilled precision dibbler according to claim 1, wherein: the hole sowing rotary disc comprises a sowing ring (10), an inoculation inclined plane ring (18) arranged on the inner circumferential surface of the sowing ring (10) and a circle of sowing duckbills (9) arranged on the outer circumferential surface of the sowing ring (10), wherein the seed sowing wheel (6) is connected to an outer bottom surface pressure plate (11) of the sowing ring (10), seed falling ports (21) corresponding to seed suction holes (602) of the seed sowing wheel (6) are circumferentially arranged on the sowing ring (10), and the seed falling ports (21) on the sowing ring (10) are connected with the sowing duckbills (9) in a one-to-one alignment manner.
4. The positive and negative air pressure combined duckbilled precision dibbler according to claim 3, wherein: the inoculation inclined plane ring (18) comprises an annular ring (1803) and a plurality of groups of inclined plane combinations (1801) which are uniformly arranged in an inner cavity (16) of the annular ring (1803) along the circumferential direction, an inclined plane ring opening (1802) is formed between every two adjacent groups of inclined plane combinations (1801), and the inclined plane ring openings (1802) and the seed dropping openings (21) are arranged in one-to-one alignment; each group of inclined plane combination (1801) comprises two inclined planes (20), the width of each inclined plane (20) is equal to that of the inner cavity (16), one ends of the two inclined planes (20) in the length direction are connected in an involutory mode, the other ends of the two inclined planes in the length direction are fixed on the wall of the inner cavity, and the depth from the highest point of the two inclined planes to the wall of the inner cavity is smaller than the depth of the inner cavity.
5. The positive and negative air pressure combined duckbilled precision dibbler according to claim 1, wherein: the seed charging chamber cavity (7) is positioned at the upper part of the seed sowing wheel (6), the seed charging chamber cavity (7) comprises a first side plate (701), a second side plate (705), an inclined plate (704), an arc-shaped plate (703) and a baffle (706), and the first side plate (701) and the second side plate (705) are arranged in parallel; the top end face and the side face of the first side plate (701) and the second side plate (705) are respectively connected with the lower surface of the inclined plate (704) and the arc-shaped plate (703), the baffle (706) is horizontally inserted into the first side plate (701), the first side plate (701) is installed on the large end cover (201), and the first side plate (701), the second side plate (705), the baffle (706) and the revolution face of the seed sowing wheel (6) jointly form a seed filling chamber.
6. The positive and negative air pressure combined duckbilled precision dibbler according to claim 5, wherein: the end faces, facing the side wall of the second chamber (603) of the seed sowing wheel (6), of the first side plate (701) and the second side plate (705) are arc-shaped faces, and the diameter of each arc-shaped face is 1-2 mm larger than that of the side wall of the second chamber (603).
7. The positive and negative air pressure combined duckbilled precision dibbler according to claim 5, wherein: the inclined plate (704) is provided with a second notch (22) for facilitating the adsorbed seeds to smoothly pass through the seed filling chamber cavity (7).
8. The positive and negative air pressure combined duckbilled precision dibbler according to claim 4, wherein: the seed guide groove (17) is positioned at the lower part of the seed sowing wheel (6) and is connected with the large end cover (201) of the air chamber cavity (2); the seed guide groove (17) is a hollow cuboid, the upper end and the lower end of the seed guide groove are arc-shaped openings, the upper end of the seed guide groove (17) is communicated with a seed suction hole (602) of the seed sowing wheel (6), the lower end of the seed guide groove is tangent to the inoculation inclined plane ring (18), and the opening of the lower end of the seed guide groove is aligned to the inoculation inclined plane ring opening (1802).
9. The positive and negative air pressure combined duckbilled precision dibbler according to claim 1, wherein: the right end of the fixed shaft (1) is provided with threads, the air chamber cavity (2) is matched with the threads through the locking nut (3) to be fixed on the fixed shaft (1), and the outer side cover plate (19) is clamped on the peripheral circular surface of the locking nut (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010261666.8A CN111480425B (en) | 2020-04-04 | 2020-04-04 | Positive and negative air pressure combined duckbilled precision dibbler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010261666.8A CN111480425B (en) | 2020-04-04 | 2020-04-04 | Positive and negative air pressure combined duckbilled precision dibbler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111480425A true CN111480425A (en) | 2020-08-04 |
| CN111480425B CN111480425B (en) | 2021-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010261666.8A Expired - Fee Related CN111480425B (en) | 2020-04-04 | 2020-04-04 | Positive and negative air pressure combined duckbilled precision dibbler |
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| CN (1) | CN111480425B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112930785A (en) * | 2021-03-08 | 2021-06-11 | 江西农业大学 | Pneumatic auxiliary hole type seed metering wheel |
| CN113767731A (en) * | 2021-08-26 | 2021-12-10 | 金华市韦恩农机有限公司 | Air-suction type plug seeder |
| CN115024052A (en) * | 2022-07-08 | 2022-09-09 | 甘肃农业大学 | Direct-inserting dibbler |
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| CN101491177A (en) * | 2008-12-16 | 2009-07-29 | 华中农业大学 | Positive and negative air-pressure combined seed-sowing mechanism air-chamber |
| CN103749049A (en) * | 2014-01-22 | 2014-04-30 | 华中农业大学 | Internal seed filled pneumatic line type accurate seed sowing device |
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| US20190166755A1 (en) * | 2014-04-04 | 2019-06-06 | Kinze Manufacturing, Inc. | Row unit with integrated pressure source |
| CN109845459A (en) * | 2019-01-28 | 2019-06-07 | 张家口市农业科学院(河北省高寒作物研究所) | A kind of positive negative pressure combined type fine grain crop hill-drop feed run |
| CN110073774A (en) * | 2019-05-14 | 2019-08-02 | 安徽农业大学 | A kind of spherical shape seed dual-purpose type precise seeder |
| CN110214499A (en) * | 2019-07-12 | 2019-09-10 | 石河子大学 | A kind of aspirated-air type indent feed mechanism for seed |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101491177A (en) * | 2008-12-16 | 2009-07-29 | 华中农业大学 | Positive and negative air-pressure combined seed-sowing mechanism air-chamber |
| CN103749049A (en) * | 2014-01-22 | 2014-04-30 | 华中农业大学 | Internal seed filled pneumatic line type accurate seed sowing device |
| US20190166755A1 (en) * | 2014-04-04 | 2019-06-06 | Kinze Manufacturing, Inc. | Row unit with integrated pressure source |
| CN108337959A (en) * | 2018-01-10 | 2018-07-31 | 华中农业大学 | American Ginseng strength pin type essence quantity set arranges device |
| CN109845459A (en) * | 2019-01-28 | 2019-06-07 | 张家口市农业科学院(河北省高寒作物研究所) | A kind of positive negative pressure combined type fine grain crop hill-drop feed run |
| CN110073774A (en) * | 2019-05-14 | 2019-08-02 | 安徽农业大学 | A kind of spherical shape seed dual-purpose type precise seeder |
| CN110214499A (en) * | 2019-07-12 | 2019-09-10 | 石河子大学 | A kind of aspirated-air type indent feed mechanism for seed |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112930785A (en) * | 2021-03-08 | 2021-06-11 | 江西农业大学 | Pneumatic auxiliary hole type seed metering wheel |
| CN113767731A (en) * | 2021-08-26 | 2021-12-10 | 金华市韦恩农机有限公司 | Air-suction type plug seeder |
| CN115024052A (en) * | 2022-07-08 | 2022-09-09 | 甘肃农业大学 | Direct-inserting dibbler |
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| Publication number | Publication date |
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| CN111480425B (en) | 2021-12-17 |
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