CN109937646B

CN109937646B - Directly-discharging adjustable air suction precision dibbler

Info

Publication number: CN109937646B
Application number: CN201811607033.7A
Authority: CN
Inventors: 康清华; 廖应良
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-27
Filing date: 2018-12-27
Publication date: 2022-03-29
Anticipated expiration: 2038-12-27
Also published as: CN109937646A

Abstract

The invention belongs to the technical field of hole sowing precision seeding machinery, and particularly relates to a straight-row adjustable air suction precision hole sowing device which comprises a fixed disc assembly, a pressure disc assembly, a sucker adjusting disc, an air cavity assembly, a movable disc assembly and a plurality of duckbilled and separator assemblies which are orderly arranged, wherein the fixed disc assembly, the pressure disc assembly, the sucker adjusting disc, the air cavity assembly, the movable disc assembly and the plurality of duckbilled and separator assemblies are combined together according to a rule to form a rotating whole rotating around the fixed disc assembly; this dibbler advances along with the continuous roll of dibbler, and the seed in the duckbilled assembly of every equipartition will be incessant throw kind to the fashioned kind of a cave in, has guaranteed the continuity of throwing kind promptly, has ensured the even and accurate of sowing again, owing to be the synchronous correspondence and get kind, has solved current dibbler hole, has scurried the drawback of kind, has realized the adjustable dark interchangeable characteristics of planting of plant spacing again completely, and this dibbler adapts to the dibbling operation of multiple crop seed, is the important breakthrough of mechanical work universalization.

Description

Directly-discharging adjustable air suction precision dibbler

Technical Field

The invention belongs to the technical field of hole sowing precision seeding machinery, and particularly relates to a direct-discharging adjustable air suction precision hole sowing machine.

Background

The agricultural seeding modes adopted in China at present are divided into three modes according to the types of machinery: 1. broadcast sowing, 2. drill sowing, 3. hole sowing. With the improvement of the precision requirement of agricultural planting, most crops depend on the seeding mode of hole sowing more and more, because the seeding mode is characterized by being superior to the first two seeding modes, 1, the seeding quantity of each mu can be effectively and accurately controlled; 2. the row spacing of the sowed plants can be strictly controlled according to different crops; 3. the seeding amount can be accurately controlled, and 4, the planting mode of water and fertilizer integration can be more effectively realized. However, the current dibbler, which is a core component of the dibbling machine, also has the following problems: 1. the universality of seeding crops is poor, namely each dibbler can only be used for one crop, and 2. the row spacing required by each crop cannot be universal, namely the row spacing cannot be changed as required. At present, the hill planter is divided into two types according to the structure: mechanical and air-suction type. The air suction type seed taking mode is superior to a mechanical type in universality. The structure of the air-suction type dibbler used in the current market is limited by a plurality of defects which can not be overcome: 1. the labyrinth type seed feeding to the duckbill is adopted, the conveying distance is too long, the seeds are easy to be blocked in a labyrinth passage in the conveying process, and the seeds are taken but cannot be fed, so that a cavity is formed; 2. the taken seeds are easy to jump off when falling into the labyrinth mouth, so that the seeds are jumped, and a cavity is also formed as a result; 3. the plant spacing and the sowing depth cannot be changed, and consequently, the universal performance of the plant is limited.

Disclosure of Invention

The invention aims to provide a direct-discharging adjustable air suction precision dibbler, which solves the problems that the air suction dibbler in the background technology has high cavity, seeds are fleeed, and the change of plant spacing and sowing depth cannot be realized.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a smart volume dibbler is inhaled to adjustable gas of straight row, includes fixed disk assembly, pressure disk assembly, sucking disc adjustment dish, air cavity assembly, driving disk assembly and a plurality of duckbilled and separator assembly of arranging in order, combines together according to the law and rotatory whole around fixed disk assembly is rotatory.

Preferably, be provided with the price fixing, advance kind of a mouth, negative pressure air pipe joint, price fixing and air cavity body fixing bolt, seed clearing ware regulating plate, dibbler peg and seed clearing ware on the price fixing assembly, space and the sucking disc assembly in the price fixing assembly enclose into a big cavity, and the lower half of cavity is the seed room, set up on the price fixing assembly and to advance kind of a mouth to the continuous supplementary seed of seed room, the first half of cavity forms the fortune kind working chamber of getting kind, clear kind, sucking disc adjusting plate is installed in the sucking disc assembly outside, set up interior keyway and adjustment slot hole on the sucking disc adjusting plate.

Preferably, the divider assembly may be any one of a 15-well assembly, a 6-well assembly, or a 4-well assembly.

Preferably, the sucker assembly is formed by fixing a sucker and a sucker transmission disc into a whole through a sucker fixing bolt, and the sucker is provided with seed taking holes which are concentrically and uniformly distributed and correspond to the duckbill and separator assemblies in number.

Preferably, the air cavity assembly consists of an air cavity main body, a movable disc chain wheel shaft, a chain wheel cavity rear cover plate, a bearing, a chain, a sucker chain wheel shaft, a sucker sealing rubber ring, a seed cleaning brush, a chain wheel and a sucker sealing rubber ring lock pad fixed on the air cavity assembly through a lock pad fixing bolt, wherein the air cavity main body is provided with a chain wheel cavity, a negative pressure channel and a negative pressure cavity outlet; the chain wheel is arranged on the sucker chain wheel shaft, bearings are arranged at two ends of the chain wheel, and the long end of the sucker chain wheel shaft faces to the side provided with the negative pressure channel and is arranged in the chain wheel cavity; the chain wheel is arranged on the chain wheel shaft, the chain wheels are arranged at two ends of each chain wheel, the long ends of the chain wheel shaft face the rear end of the air cavity main body, the chain wheel cavity rear cover plate is buckled at the outer end of the chain wheel cavity and fastened by bolts to form an airtight chain wheel transmission box, the two positioned chain wheels freely rotate around the bearings on the same plane respectively, a chain is arranged on each chain wheel, the two chain wheels have the same diameter, the sucker chain wheel shaft and the chain wheel shaft perform synchronous and same-direction rotating motion, and an outer key groove corresponding to the inner key groove is formed in one end of the sucker chain wheel shaft.

Preferably, the duckbilled and separator assembly is fixed into a variable unit capable of increasing and decreasing the number of cavities by the separator and the duckbilled assembly through bolts, the separator is provided with a wear-resistant sealing strip, a separator cavity is formed in the separator, the fixed duckbilled and the movable duckbilled are installed at an outlet of the duckbilled assembly, and the fixed duckbilled and the movable duckbilled are closed to form a triangular area.

Preferably, the pressing plate is provided with a plurality of equally-divided holes and a positioning ring which can be buckled with positioning grooves formed in the duckbill and separator assemblies, the duckbill and separator assemblies are locked by fixing bolts in an equal and orderly manner according to needs, and the duckbill and separator assemblies are assembled into combinations with different hole numbers and different sowing depths according to the agricultural requirements to form the pressing plate assembly.

Preferably, the movable disc assembly is a rotating body formed by fixedly connecting a movable disc and a movable disc flange through a movable disc fixing bolt, a positioning ring is arranged on the movable disc, and a movable disc shaft is arranged on the movable disc flange; the movable disc shaft is sleeved into the long end of the movable disc chain wheel shaft and fixed into a rotating whole by bolts, the movable disc is used as a driving disc to drive the movable disc chain wheel shaft, and the sucking disc chain wheel shaft and the movable disc assembly rotate synchronously and in the same direction through the transmission of a chain and a chain wheel; in the other end constant head tank lock that is equipped with on pressing disk assembly through duckbilled and separator assembly was to the position circle that sets up on the driving disk, reuse bolt is a rotatory whole pressing disk assembly and driving disk assembly, and the duckbilled assembly rolls on ground at this rotatory whole that operation ground inground drive pressing disk assembly and driving disk assembly pressfitting and gos forward, through the effect that forms a inclosed sprocket feed case in the air cavity assembly, drives the sucking disc and makes syntropy, synchronous revolution forward.

Preferably, the sucker assembly is dynamically attached to the air cavity assembly; the negative pressure channel, the sucker sealing rubber ring and the sucker on the air cavity main body form a closed negative pressure chamber.

Compared with the prior art, the invention has the beneficial effects that: this dibbler advances along with the continuous roll of dibbler, and the seed in the duckbilled assembly of every equipartition will be incessant throw kind to the fashioned kind of a cave in, has guaranteed the continuity of throwing kind promptly, has ensured the even and accurate of sowing again, owing to be the synchronous correspondence and get kind, has solved current dibbler hole, has scurried the drawback of kind, has realized the adjustable dark interchangeable characteristics of planting of plant spacing again completely, and this dibbler adapts to the dibbling operation of multiple crop seed, is the important breakthrough of mechanical work universalization.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a rear view of the present invention;

FIG. 3 is a schematic cross-sectional view of the present invention;

FIG. 4 is a schematic diagram of the seed selection of the present invention;

FIG. 5 is an enlarged schematic view of the adjustment plate of the suction cup according to the present invention;

FIG. 6 is a schematic diagram of the structure of an air cavity assembly of the present invention;

FIG. 7 is a schematic cross-sectional view of an air cavity assembly of the present invention;

FIG. 8 is a schematic view of the structure of the suction cup of the present invention;

FIG. 9 is a schematic structural view of a fixed disk assembly of the present invention;

FIG. 10 is a side view of the surface plate assembly of the present invention;

FIG. 11 is a schematic view of the structure of the chuck assembly of the present invention;

FIG. 12 is a side view of the chuck assembly of the present invention;

FIG. 13 is a schematic view of the construction of the cam assembly of the present invention;

FIG. 14 is a side view of the cam assembly of the present invention;

figure 15 is a schematic structural view of a duckbill assembly in accordance with the present invention;

figure 16 is a side elevational view of a duckbill assembly according to the present invention;

figure 17 is a schematic cross-sectional view of a duckbill assembly in accordance with the present invention;

figure 18 is a schematic structural view of a 15-well duckbill and divider assembly of the present invention;

figure 19 is a schematic structural view of a 6-well duckbill and divider assembly of the present invention;

figure 20 is a schematic structural view of a 4-well duckbill and divider assembly of the present invention;

in the figure: 1. a fixed disc assembly; 2. a platen assembly; 3. a movable plate assembly; 4. fixing a disc; 5. seed inlet; 6. a negative pressure air pipe joint; 7. the fixed plate and the air cavity are fixed by bolts; 8. seed cleaner regulating plate; 9. a hanging shaft of the dibbler; 10. seed cleaning; 11. a suction cup assembly; 12. a suction cup; 13. a sucker transmission disc; 14. a sucker fixing bolt; 15. positioning rings; 16. a movable disc shaft; 17. a movable plate; 18. a movable disc flange; 19. a movable disc fixing bolt; 20. a duckbill and divider assembly; 21. a separator; 22. fixing a duckbill; 23. a wear-resistant sealing strip; 24. positioning a groove; 25. a movable duckbill; 26. an air cavity assembly; 27. a movable disc sprocket shaft; 28. a sprocket cavity rear cover plate; 29. a bearing; 30. a chain; 31. a sucker sprocket shaft; 32. the sucker seals the rubber ring; 33. cleaning the seeds with a brush; 34. a negative pressure cavity outlet; 35. a sprocket; 36. the sucking disc seals the rubber ring lock pad; 37. a lock pad fixing bolt; 38. a negative pressure channel; 39. 15 points; 40. 6, an assembly of acupuncture points; 41. 4, an assembly of acupuncture points; 42. an air cavity body; 43. taking a hole; 44. a sprocket cavity; 45. a negative pressure chamber; 46. a seed conveying working cavity; 47. a divider cavity; 48. a triangular area; 49. a platen; 50. a sucker adjusting disc; 51. a duckbill assembly; 52. fixing the bolt; 53. an outer keyway; 54. an inner keyway; 55. adjusting the long hole; 56. a seed chamber.

Detailed Description

The present invention will be further described with reference to the following examples.

The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple modifications of the method of the present invention based on the concept of the present invention are within the scope of the claimed invention.

A direct-discharge adjustable air suction precision dibbler is shown in figures 1-20 and comprises a fixed disc assembly 1, a pressure disc assembly 2, a suction disc assembly 11, a suction disc adjusting disc 50, an air cavity assembly 26, a movable disc assembly 3 and a plurality of duckbilled and separator assemblies 20 which are orderly arranged, wherein the duckbilled and separator assemblies are regularly combined together to form a rotating whole rotating around the fixed disc assembly 1;

the fixed disc assembly 1 is provided with a fixed disc 4, a seed inlet 5, a negative pressure air pipe joint 6, a fixed disc and air cavity fixing bolt 7, a seed cleaner adjusting plate 8, a dibbler hanging shaft 9, a seed cleaner 10 and the like;

the sucker assembly 11 is formed by fixing a sucker 12 and a sucker transmission disc 13 into a whole through a sucker fixing bolt 14, and seed taking holes 43 which are concentrically and uniformly distributed and correspond to the number of the duckbill and separator assemblies are arranged on the sucker 12;

the air cavity assembly 26 comprises an air cavity main body 42, a movable disc chain wheel shaft 27, a chain wheel cavity rear cover plate 28, a bearing 29, a chain 30, a sucker chain wheel shaft 31, a sucker sealing rubber ring 32, a seed cleaning brush 33, a chain wheel 35 and a sucker sealing rubber ring locking pad 36, wherein the air cavity main body 42 is provided with a chain wheel cavity 44, a negative pressure channel 38 and a negative pressure cavity outlet 34; the chain wheel 35 is arranged on the sucker chain wheel shaft 31, the bearings 29 are arranged at the two ends of the chain wheel 35, and the long end of the sucker chain wheel shaft 31 faces to the side with the negative pressure channel 38 and is arranged in the chain wheel cavity 44; the movable disc chain wheel shaft 27 is also provided with a chain wheel 35, bearings 29 are arranged at two ends of the chain wheel 35, the long end of the movable disc chain wheel shaft 27 faces the rear end of the air cavity main body 42, a chain wheel cavity rear cover plate 28 is buckled at the outer end of a chain wheel cavity 44 and is fastened by bolts, so that a closed chain wheel transmission box is formed, the two positioned chain wheels 35 are in the same plane and freely rotate around the bearings 29 respectively, a chain 30 is arranged on the chain wheel 35, and the two chain wheels 35 are in the same diameter, so that the suction disc chain wheel shaft 31 and the movable disc chain wheel shaft 27 synchronously rotate in the same direction after being driven by the chain 30;

the duckbill and separator assembly 20 is formed by fixing a separator 21 and a duckbill assembly 51 into a whole through bolts, and is used as a change unit capable of increasing and decreasing the number of holes, so that the plant spacing change and the sowing depth change can be realized, and the separator 21 is provided with a wear-resistant sealing strip 23;

a plurality of equant holes are designed on the pressure plate 49, the positioning rings 15 are arranged on the pressure plate, after the duckbill and separator assemblies 20 are buckled through the positioning grooves 24 arranged on the duckbill and separator assemblies, the duckbill and separator assemblies 20 are locked through the fixing bolts 52 evenly and orderly according to needs, and the duckbill and separator assemblies are assembled into combinations with different hole numbers and different sowing depths according to the agricultural requirements to form the pressure plate assembly 2; the movable disc assembly 3 is fixedly connected into a rotating body by a movable disc 17 and a movable disc flange 18 through a movable disc fixing bolt 19, a positioning ring 15 is arranged on the movable disc 17, and a movable disc shaft 16 is arranged on the movable disc flange 18; the movable disc shaft 16 is sleeved into the long end of the movable disc chain wheel shaft 27 and fixed into a rotating whole by bolts, the movable disc 17 is used as a driving disc to drive the movable disc chain wheel shaft 27, and the sucking disc chain wheel shaft 31 and the movable disc assembly 3 synchronously and synchronously rotate in the same direction through the transmission of the chain 30 and the chain wheel 35, so that the synchronous and the same-direction transmission of two non-concentric shafts is realized; the pressing disc assembly 2 is buckled into a positioning ring 15 arranged on a movable disc 17 through a positioning groove 24 at the other end of the duckbill and separator assembly 20, the pressing disc assembly 2 and the movable disc assembly 3 are pressed into a rotating whole by bolts, the duckbill assembly 51 drives the rotating whole pressed by the pressing disc assembly 2 and the movable disc assembly 3 to roll and move forward on the ground in the process of working ground, and the sucking discs 12 are driven to rotate forwards in the same direction and synchronously under the action of a closed chain wheel transmission box formed in an air cavity assembly 26;

sleeving the sucker assembly 11 into the long end of the sucker chain wheel shaft 31 from the end of the air cavity assembly 26 provided with the negative pressure channel 38, arranging a transmission outer key slot 53 at the long end of the sucker chain wheel shaft 31, arranging a transmission inner key slot 54 and an adjusting long hole 55 on the sucker adjusting disc 50, sleeving the sucker assembly 11 into the long end of the sucker chain wheel shaft 31, tightly pressing the adjusting long hole 55 of the sucker adjusting disc 50 on the sucker transmission disc 13 through a preset screw hole on the sucker transmission disc 13 by using a bolt, so that the sucker assembly 11 and the sucker chain wheel shaft 31 form an angle-adjustable rotating whole, forming a dynamic sealed negative pressure chamber 45 by the inner end surface of the sucker 12 and a sucker sealing rubber ring 32 arranged in the air cavity assembly 26, and then buckling the fixed disc assembly 1 on the front end surface of the sucker assembly 11;

thus, the fixed plate assembly 1, the pressure plate assembly 2, the sucker assembly 11 and the air cavity assembly 26 form a plurality of chambers; the space in the fixed disc assembly 1 and the sucker assembly 11 enclose a large cavity, the lower half part of the cavity is a seed chamber 56, seeds are continuously supplemented to the seed chamber 56 through a seed inlet 5 arranged on the fixed disc assembly 1, and the upper half part of the cavity forms a seed conveying working cavity 46 for seed taking, seed separating and seed cleaning; the sucker assembly 11 is dynamically attached to the air cavity assembly 26; the negative pressure channel 38 on the air cavity main body 42, the sucker sealing rubber ring 32 and the sucker 12 form a closed negative pressure chamber 45; in the seed chamber 56, wind enters the negative pressure chamber 45 from the seed taking hole 43 on the suction cup 12, is extracted from the negative pressure chamber outlet 34 and the external negative pressure air pipe joint 6, the wind is continuously extracted, seeds near the seed taking hole 43 on the suction cup 12 are taken up by the wind flow flowing at high speed and are tightly attached to the seed taking hole 43, and the seeds are firmly sucked under the action of negative pressure generated by the wind; the sucked seeds are lifted upwards along with the rotation of the sucking disc 12, the seeds which are sucked up are cleaned through the seed cleaner area, the seeds fall back to the seed chamber 56, the seeds which are reserved in the seed taking hole 43 continuously move forwards by the rotation motion of the sucking disc 12, the seeds enter the separator cavity 47 of the separator 21 which rotates synchronously with the sucking disc 12 after being conveyed out of the seed conveying working cavity 46, at the moment, the seed taking hole 43 just leaves the range of the negative pressure cavity 45, the seed taking hole 43 is communicated with the atmosphere, the seeds lose the negative pressure restriction, the seed taking hole 43 is separated, the seeds freely fall into the separator cavity 47, the duckbill and separator assembly 20 continuously rotate and rapidly slide into the duckbill assembly 51, the seeds are reserved in the triangular area 48 formed when the fixed duckbill 22 and the movable duckbill 25 are closed, and a series of processes of taking, separating, conveying and guiding the seeds from the seed chamber 56 to the duckbill are completed;

as shown in fig. 4 and 5, when the dibbler is hung on a machine tool and is pulled to move forwards, the dibbler duck bill assembly 51 is pressed into the soil on the working ground to drive the pressure plate assembly 2 and the movable plate assembly 3 to rotate integrally to roll on the ground, the movable duck bill 25 which enters the soil is pushed open by the ground, seeds which previously fall into the triangular area 48 formed when the fixed duck bill 22 and the movable duck bill 25 are closed fall down, and the seeds fall into seed holes formed by punching the duck bill assembly 51 in the working ground, so that the seed throwing is completed;

as shown in fig. 18, 19 and 20, the divider assembly 20 can be any one of a 15-hole assembly 39, a 6-hole assembly 40 or a 4-hole assembly 41, and the number of holes of the divider 20 can be changed according to the needs of plants, so that the distance between the plants can be changed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a smart volume dibbler is inhaled to adjustable gas of straight line which characterized in that: the automatic duck feeding device comprises a fixed plate assembly (1), a pressure plate assembly (2), a sucker assembly (11), a sucker adjusting plate (50), an air cavity assembly (26), a movable plate assembly (3) and a plurality of duckbilled and separator assemblies (20) which are orderly arranged, and the fixed plate assembly (1), the movable plate assembly and the movable plate assembly are regularly combined together and rotate around the fixed plate assembly (1) to form a rotating whole; the seed sowing device is characterized in that a fixed disc (4), a seed inlet (5), a negative pressure air pipe joint (6), a fixed disc and air cavity fixing bolt (7), a seed cleaner adjusting plate (8), a dibbler hanging shaft (9) and a seed cleaner (10) are arranged on the fixed disc assembly (1), a large cavity is defined by the space in the fixed disc assembly (1) and the sucker assembly (11), a seed chamber (56) is arranged at the lower half part of the cavity, the fixed disc assembly (1) is provided with the seed inlet (5) capable of continuously supplementing seeds to the seed chamber (56), a seed conveying working cavity (46) for taking, separating and cleaning seeds is formed at the upper half part of the cavity, a sucker adjusting disc (50) is arranged at the outer side of the sucker assembly (11), and the sucker adjusting disc (50) is provided with an inner key groove (54) and an adjusting long hole (55); the pressing plate (49) is provided with a plurality of equant holes and a positioning ring (15) which can be buckled with a positioning groove (24) arranged on the duckbilled and separator assembly (20), the duckbilled and separator assemblies (20) are locked by fixing bolts (52) evenly and orderly according to needs, and the duckbilled and separator assemblies are assembled into combinations with different hill numbers and sowing depths according to the agricultural requirements to form the pressing plate assembly (2).

2. The adjustable air suction precision dibbler in direct line as claimed in claim 1, wherein: the separator assembly (20) is any one of 1 to 15 cavities.

3. The adjustable air suction precision dibbler in direct line as claimed in claim 2, wherein: the sucker assembly (11) is formed by fixing a sucker (12) and a sucker transmission disc (13) into a whole through a sucker fixing bolt (14), and the sucker (12) is provided with seed taking holes (43) which are concentrically and uniformly distributed and correspond to the duckbill and separator assembly (20) in number.

4. The adjustable air suction precision dibbler in direct line as claimed in claim 3, wherein: the air cavity assembly (26) consists of an air cavity main body (42), a movable disc chain wheel shaft (27), a chain wheel cavity rear cover plate (28), a bearing (29), a chain (30), a sucker chain wheel shaft (31), a sucker sealing rubber ring (32), a seed cleaning brush (33), a chain wheel (35) and a sucker sealing rubber ring locking pad (36) which is fixed on the air cavity assembly (26) through a locking pad fixing bolt (37), wherein the air cavity main body (42) is provided with a chain wheel cavity (44), a negative pressure channel (38) and a negative pressure cavity outlet (34); the chain wheel (35) is arranged on the sucker chain wheel shaft (31), bearings (29) are arranged at two ends of the chain wheel (35), and the long end of the sucker chain wheel shaft (31) faces to the side provided with the negative pressure channel (38) and is arranged in the chain wheel cavity (44); the chain wheel and chain wheel transmission box is characterized in that the movable disc and chain wheel shaft (27) is also provided with a chain wheel (35), bearings (29) are arranged at two ends of the chain wheel (35), the long end of the movable disc and chain wheel shaft (27) faces the rear end of the air cavity main body (42), a chain wheel cavity rear cover plate (28) is buckled at the outer end of the chain wheel cavity (44) and is fastened by bolts to form a closed chain wheel transmission box, the two positioned chain wheels (35) freely rotate around the bearings (29) on the same plane respectively, a chain (30) is arranged on the chain wheel (35), the two chain wheels (35) are in the same diameter, the sucking disc and chain wheel shaft (31) and the movable disc and chain wheel shaft (27) synchronously rotate in the same direction, and one end of the sucking disc and chain wheel shaft (31) is provided with an outer key groove (53) corresponding to the inner key groove (54).

5. The adjustable air suction precision dibbler in direct line as claimed in claim 4, wherein: the duckbilled and divider assembly (20) is fixed into a variable unit capable of increasing and decreasing the number of cavities by a divider (21) and a duckbilled assembly (51) through bolts, a wear-resistant sealing strip (23) is installed on the divider (21), a divider cavity (47) is arranged in the divider (21), a fixed duckbill (22) and a movable duckbill (25) are installed at an outlet of the duckbilled assembly (51), and the fixed duckbill (22) and the movable duckbill (25) are closed to form a triangular area (48).

6. The adjustable air suction precision dibbler in direct line as claimed in claim 1, wherein: the movable disc assembly (3) is fixedly connected into a rotating body through a movable disc fixing bolt (19) by a movable disc (17) and a movable disc flange (18), a positioning ring (15) is arranged on the movable disc (17), and a movable disc shaft (16) is arranged on the movable disc flange (18); the movable disc shaft (16) is sleeved into the long end of the movable disc chain wheel shaft (27) and fixed into a rotating whole by bolts, the movable disc (17) is used as a driving disc to drive the movable disc chain wheel shaft (27), and the sucking disc chain wheel shaft (31) and the movable disc assembly (3) rotate synchronously and in the same direction through the transmission of a chain (30) and a chain wheel (35); press disk assembly (2) through duckbilled and in other end constant head tank (24) lock that is equipped with on separator assembly (20) the position circle (15) that set up on driving disk (17), reuse bolt is pressing into a rotatory whole with driving disk assembly (3) pressure disk assembly (2), duckbilled assembly (51) rolls at ground of operation this rotatory whole that drives pressure disk assembly (2) and driving disk assembly (3) pressfitting and advances, form the effect of a inclosed sprocket feed case in air cavity assembly (26), drive sucking disc (12) and make syntropy forward, synchronous revolution.

7. The adjustable air suction precision dibbler in direct line as claimed in claim 6, wherein: the sucker assembly (11) is dynamically attached to the air cavity assembly (26); the negative pressure channel (38) on the air cavity main body (42), the sucker sealing rubber ring (32) and the sucker (12) form a closed negative pressure chamber (45).