CN112840810A - Negative pressure cavity synchronous rotation type high-speed precision seeding monomer - Google Patents
Negative pressure cavity synchronous rotation type high-speed precision seeding monomer Download PDFInfo
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- CN112840810A CN112840810A CN202110126289.1A CN202110126289A CN112840810A CN 112840810 A CN112840810 A CN 112840810A CN 202110126289 A CN202110126289 A CN 202110126289A CN 112840810 A CN112840810 A CN 112840810A
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- metering device
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/18—Machines for depositing quantities of seed at intervals
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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
- A01C5/06—Machines for making or covering drills or furrows for sowing or planting
- A01C5/062—Devices for making drills or furrows
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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
- A01C5/06—Machines for making or covering drills or furrows for sowing or planting
- A01C5/066—Devices for covering drills or furrows
- A01C5/068—Furrow packing devices, e.g. press wheels
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/08—Broadcast seeders; Seeders depositing seeds in rows
- A01C7/081—Seeders depositing seeds in rows using pneumatic means
- A01C7/082—Ducts, distribution pipes or details thereof for pneumatic seeders
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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
Abstract
The invention relates to a negative pressure cavity synchronous rotation type high-speed precision seeding single body which comprises a seed box, a seed box front support, a negative pressure cavity synchronous rotation seed metering device, a cross beam, a single body connecting plate, parallel connecting rods, a furrow opener connecting square tube, a furrow opener, an airflow high-speed seed conveying device, a seed pressing wheel, a soil covering device, a press wheel mounting support, a soil covering device mounting support, a press wheel pre-tightening device, a single body side plate, a seed metering device mounting plate, a connecting tube and a seed box rear support. The invention can realize single floating sowing. A negative pressure cavity synchronous rotary air suction seed sowing device is designed, so that the air tightness of the seed sowing device is improved while single-seed precision sowing is realized; the high-speed air flow seed conveying technology is adopted to reduce the bouncing and collision probability of the seeds in the seed conveying process, so that the seeds are stably conveyed, and the seed pressing wheel pressing technology is integrated to realize the accurate positioning of the seeds in the seed furrow; 4 rows of seeds are discharged by the seed sowing device and are conveyed at intervals to form a wide seedling belt, and finally high-speed precision sowing is realized.
Description
Technical Field
The invention relates to a high-speed precision seeding monomer, in particular to a negative pressure cavity synchronous rotation type high-speed precision seeding monomer which can realize seeding depth profiling, ditching, air suction precision seeding, high-speed airflow seed conveying, seed pressing, soil covering and pressing operations, and belongs to the field of agricultural machinery.
Background
The realization of high-speed precision seeding of grain crops, particularly grains, is the key to improve the grain production efficiency, reduce the production cost and realize high and stable yield. Most of the traditional grain sowing is drill sowing or broadcast sowing, the sowing uniformity is poor, and the grain yield is severely restricted. In recent years, with the realization of precision seeding of crops such as corn, soybean and the like, precision seeding technology has been gradually applied to seeding of crops such as wheat, rice, sorghum and the like.
(1) The grain precision seeding technology is to implant seeds into soil according to certain seeding depth, planting distance or uniformity, cover soil uniformly and apply appropriate compaction force.
(2) The transmission grain seeder is mostly in an integral floating type, single floating cannot be realized, each seeding row cannot adapt to surface fluctuation, so that the seeding depth is inconsistent, the seedling emergence uniformity is influenced, and the yield is finally influenced;
(3) the conventional grain seed sowing device is mainly provided with a grooved wheel seed sowing device and is assisted by mechanical seed sowing devices such as a cell type seed sowing device and a hole type seed sowing device, and the mechanical seed sowing devices have the characteristics of poor seed sowing precision and high seed crushing rate, so that precise precision sowing is difficult to realize, the seeds are poor in field distribution uniformity, a good population environment cannot be constructed, and the grain yield is reduced;
(4) the seed conveying process of the traditional seeder depends on the gravity of the seeds to fall, the seeds are easy to bounce and collide in the conveying process, the ordered seed flow discharged by the seed sowing device is seriously damaged, and the seed sowing uniformity is reduced.
Disclosure of Invention
In order to solve the problems, the invention provides a negative pressure cavity synchronous rotation type high-speed precision seeding monomer, which can realize monomer floating seeding.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
the utility model provides a high-speed smart volume seeding monomer of synchronous rotary type in negative pressure chamber, including seed case 1, seed case fore-stock 2, the seed metering ware 3 is rotated in the negative pressure chamber is synchronous, crossbeam 4, monomer connecting plate 5, parallel connecting rod 6, furrow opener connecting side pipe 7, furrow opener 8, the high-speed seed conveying device of air current 9, seed wheel 10, soil covering device 11, press wheel 12, press wheel installing support 13, soil covering device installing support 14, seed wheel installing support 15, seed wheel preloading device 16, monomer curb plate 17, seed metering ware installing plate 18, connecting pipe 19 and seed case after-poppet 20.
The seeding monomer passes through monomer connecting plate 5 to be installed on the seeder girder, parallel connecting rod 6 is all articulated with monomer connecting plate 5, crossbeam 4, can realize the unsteady profile modeling of seeding monomer. The trencher connecting square tube 7 is a hollow square tube and is welded in front of the cross beam 4; the furrow opener 8 is inserted into the furrow opener connecting square pipe 7, and the upper position and the lower position of the furrow opener can be fixed through bolts and the like; the bottom of the seed box front support 2 is welded on the upper part of the cross beam 4, the seed box 1 is supported above the negative pressure cavity synchronous rotation seed sowing device 3 through the seed box front support 2, and seeds in the seed box can enter the negative pressure cavity synchronous rotation seed sowing device 3 through the connecting pipe 19. The air flow high-speed seed conveying device 9 is arranged below the negative pressure cavity synchronous rotation seed sowing device 3 and is used for receiving seeds falling from the seed sowing device, accelerating the seeds and then conveying the seeds. The lower end of the seed box rear bracket 20 is connected with the single side plate 17.
The number of the single side plates 17 is 2, the front ends of the 2 single side plates 17 are symmetrically welded at the left end and the right end of the cross beam 4 respectively, the seed metering device mounting plates 18 are welded at the upper parts of the single side plates, and three hinge points are distributed at the lower parts of the single side plates and are respectively used for hinging the press wheel mounting bracket 13, the soil covering device mounting bracket 14, the press wheel mounting bracket 15 and the press wheel pre-tightening device 16; the press wheel mounting bracket 13 and the coverer mounting bracket 14 are coaxially mounted; the seed metering device mounting plate 18 is used for fixedly mounting the negative pressure cavity to synchronously rotate the seed metering device 3;
the seed pressing wheel 10 is positioned behind the airflow high-speed seed conveying device 9 and is used for pressing seeds falling at a high speed into soil, so that the seeds are prevented from bouncing, and the consistency of the seeding plant spacing can be improved; the pressure wheel mounting bracket 15 is hinged with a pressure wheel pre-tightening device 16, and a spring is arranged in the pressure wheel pre-tightening device 16 and can enable the pressure wheel to be tightly attached to the ground surface; the soil covering device 11 is positioned behind the seed pressing wheel 10 and is used for backfilling soil on two sides of the seed ditch and covering seeds. And the press wheel 12 is positioned behind the soil coverer 11 and is used for compacting the soil covered above the seeds.
The negative pressure cavity synchronous rotation seed metering device 3 is fixedly arranged above the seed metering device mounting plate 18 through bolts and is positioned below the seed box 1, and the negative pressure cavity synchronous rotation seed metering device 3 comprises a seed metering device shell 301, a seed metering device negative pressure cavity disc 302, a seed metering device base 303, a seed metering device end cover 304, a right side rotation bearing seat 305, a driven gear 306, a negative pressure pipe shaft 307, two outer side bearings 308, an inner side bearing 309, a motor bracket 310, a speed reducing motor 311, a driving gear 312, a seed discharging and inoculating device 313, a seed storage box 314, a seed cleaning tooth 315, a seed disturbing mechanism 318 and a left side rotation bearing seat 320;
the negative pressure cavity disc 302 of the seed sowing device is formed by butting a left part and a right part, the inside of the negative pressure cavity disc is of a hollow structure, and the left part and the right part are fixedly connected through a butting mounting hole 319 and a bolt; the left part and the right part of the negative pressure cavity disc 302 of the seed sowing device are respectively and uniformly distributed with 2 rows of seed adsorption holes 317 and a seed disturbing mechanism 318 along the circumference; the aperture of the seed adsorption hole 317 is smaller than the minimum diameter of the seed, and the disturbance mechanism 318 is used for disturbing the population, so that the seed is easier to be adsorbed by the seed adsorption hole. The left part and the right part of the seed sowing device negative pressure cavity disc 302 are respectively connected with a left rotating bearing seat 320 and a right rotating bearing seat 305 through bolts, the right rotating bearing seat 305 is provided with an inner side bearing 309, a negative pressure pipe shaft 307 is arranged in the inner side bearing 309, and the seed sowing device negative pressure cavity disc 302 can rotate relative to the negative pressure pipe shaft 307. The left rotary bearing seat 320 is arranged in the seed metering device shell 301 through an outer side bearing 308, the right rotary bearing seat 305 is fixed on a seed metering device end cover 304 through another outer side bearing 308, and the outer end of the right rotary bearing seat 305 is provided with a driven gear 306; the driving gear 312 is engaged with the driven gear 306; the upper part of the seed metering device base 303 is connected with the seed metering device shell 301, and the lower part is fixedly arranged on the seed metering device mounting plate 18.
The seed meter end cap 304 and the seed meter housing 301 form a closed space, and a fixed amount of seeds can be contained in the closed space. The seeding unit end cover 304 is fixedly connected with the motor support 310 through bolts, the speed reducing motor 311 is fixedly connected with the motor support 310 through bolts, and a driving gear 312 is arranged on a shaft of the speed reducing motor. The seed metering device shell 301 is provided with a seed storage box 314, a seed cleaning tooth 315 and a seed discharging and inoculating device 313; an air inlet 316 is arranged at the upper part of the seed metering device shell 301.
The air flow high-speed seed conveying device 9 is arranged below the negative pressure cavity synchronous rotation seed metering device 3 and is provided with 4 rows, one in each row; the upper part of the airflow high-speed seed conveying device 9 is connected with a seed unloading and inoculating device 313, and the connection part is sealed; the gas flow high-speed seed conveying device 9 comprises a seed inlet pipe 901, a gas-solid mixing accelerating device 902, a throat pipe 903, a seed conveying pipe 904, a connecting block 905, a seed injection pipe 906, an air inlet pipe 907, a bolt 908 and a set screw 909. The seed inlet pipe 901 is arranged below the seed unloading and inoculating device 313; a gas-solid mixing accelerating device 902 is inserted below the gas inlet pipe 901, the gas-solid mixing accelerating device 902 is of a three-way structure, and is respectively provided with a gas conveying pipe 904 and a gas inlet pipe 907 which are respectively fixed through two set screws 909; the gas-solid mixing accelerating device 902 is formed by connecting a left part and a right part through bolts 908; a throat pipe 903 is arranged in the gas-solid mixing accelerating device 902; the lower part of the seed conveying pipe 904 is provided with a connecting block 905, and the lower part of the connecting block 905 is connected with a seed feeding pipe 906.
The invention has the beneficial effects that: the invention can realize single floating sowing. A negative pressure cavity synchronous rotary type air suction seed sowing device is designed, so that the air tightness of the seed sowing device is improved while single-seed precision sowing is realized; the high-speed air flow seed conveying technology is adopted to reduce the probability of bounce and collision of seeds in the seed conveying process, so that the seeds are stably conveyed, and the seed pressing technology is integrated to realize the accurate positioning of the seeds in a seed ditch; the seed metering device discharges 4 rows of seeds and conveys the seeds at intervals to form a wide seedling zone, and finally high-speed precise seeding is realized.
Drawings
The invention has the following drawings:
FIG. 1 is a schematic view of the structure of a seeding unit.
Fig. 2 is a perspective view of the sowing unit.
FIG. 3a is a schematic view of the structure of a negative pressure chamber synchronous rotation seed metering device;
figure 3b is a cross-sectional view a-a of figure 3 a.
FIG. 4 is a perspective view of a negative pressure chamber synchronous rotation seed metering device.
FIG. 5a is a first schematic view of the structure of the negative pressure chamber disk of the seed sowing device;
FIG. 5b is a second schematic view of the structure of the negative pressure chamber disk of the seed sowing device.
FIG. 6 is a sectional view of the gas flow high velocity seed feeder.
FIG. 7 is a schematic structural diagram of the gas flow high-speed seed feeder.
Fig. 8 is a top view of a seeding cell.
FIG. 9 is a schematic view of the construction of a seed-discharging inoculating device.
FIG. 10 is a schematic view of a gas-solid mixing accelerator.
The seed sowing device comprises a seed box 1, a seed box front support 2, a negative pressure cavity synchronous rotation seed sowing device 3, a cross beam 4, a single connecting plate 5, a parallel connecting rod 6, a furrow opener connecting square tube 7, a furrow opener 8, an airflow high-speed seed conveying device 9, a seed pressing wheel 10, a soil covering device 11, a pressing wheel 12, a pressing wheel mounting support 13, a soil covering device mounting support 14, a seed pressing wheel mounting support 15, a seed pressing wheel pre-tightening device 16, a single side plate 17, a seed sowing device mounting plate 18, a connecting tube 19 and a seed box rear support 20; the seed metering device comprises a seed metering device shell 301, a seed metering device negative pressure cavity disc 302, a seed metering device base 303, a seed metering device end cover 304, a right side rotating bearing seat 305, a driven gear 306, a negative pressure pipe shaft 307, an outer side bearing 308, an inner side bearing 309, a motor support 310, a speed reducing motor 311, a driving gear 312, a seed discharging and inoculating device 313, a seed storage box 314, a seed cleaning tooth 315, an air inlet 316, a seed adsorption hole 317, a seed disturbing mechanism 318, a butt joint mounting hole 319 and a left side rotating bearing seat 320; a pipe 901 for feeding in, a gas-solid mixing accelerating device 902, a throat pipe 903, a pipe 904 for delivering in, a connecting block 905, a pipe 906 for injecting in, an air inlet pipe 907, a bolt 908 and a set screw 909.
Detailed Description
The present invention is described in further detail below with reference to figures 1-10.
1) Negative pressure cavity synchronous rotation type high speed precision seeding monomer (hereinafter referred to as seeding monomer)
As shown in fig. 1, a negative pressure cavity synchronous rotation type high-speed precision seeding single body comprises a seed box 1, a seed box front support 2, a negative pressure cavity synchronous rotation seed sowing device 3, a cross beam 4, a single connecting plate 5, a parallel connecting rod 6, a furrow opener connecting square tube 7, a furrow opener 8, an airflow high-speed seed conveying device 9, a seed pressing wheel 10, a soil covering device 11, a pressing wheel 12, a pressing wheel mounting support 13, a soil covering device mounting support 14, a seed pressing wheel mounting support 15, a seed pressing wheel pre-tightening device 16, a single side plate 17, a seed sowing device mounting plate 18, a connecting pipe 19 and a seed box rear support 20.
The seeding monomer passes through monomer connecting plate 5 to be installed on the seeder girder, parallel connecting rod 6 all articulates with monomer connecting plate 5, crossbeam 4, can realize the unsteady profile modeling of seeding monomer. The furrow opener connecting square tube 7 is a hollow square tube and is welded in front of the cross beam 4; the furrow opener 8 is inserted into the furrow opener connecting square pipe 7, and the upper position and the lower position of the furrow opener can be fixed through bolts and the like; the bottom of the seed box front support 2 is welded on the upper part of the cross beam 4, the seed box 1 is supported above the seed sowing device 3 synchronously rotating in the negative pressure cavity through the seed box front support 2, and seeds in the seed box can enter the negative pressure cavity through the connecting pipe 19 and synchronously rotate the seed sowing device 3. The air flow high-speed seed conveying device 9 is arranged below the negative pressure cavity synchronous rotation seed metering device 3 and is used for receiving seeds falling from the seed metering device and accelerating and conveying the seeds. The lower end of the seed box rear bracket 20 is connected with the single side plate 17.
The number of the single side plates 17 is 2, the front ends of the 2 single side plates 17 are symmetrically welded at the left end and the right end of the cross beam 4 respectively, the seed metering device mounting plates 18 are welded at the upper parts of the single side plates, and three hinge points are distributed at the lower parts of the single side plates and are respectively used for hinging the press wheel mounting bracket 13, the soil covering device mounting bracket 14, the press wheel mounting bracket 15 and the press wheel pre-tightening device 16; the press wheel mounting bracket 13 and the coverer mounting bracket 14 are coaxially mounted; the seed metering device mounting plate 18 is used for fixedly mounting the negative pressure cavity to synchronously rotate the seed metering device 3;
2) negative pressure cavity synchronous rotation seed sowing device
The negative pressure cavity synchronous rotation seed metering device 3 is fixedly arranged above the seed metering device mounting plate 18 through bolts and is positioned below the seed box 1, and the negative pressure cavity synchronous rotation seed metering device 3 comprises a seed metering device shell 301, a seed metering device negative pressure cavity disc 302, a seed metering device base 303, a seed metering device end cover 304, a right side rotation bearing seat 305, a driven gear 306, a negative pressure pipe shaft 307, two outer side bearings 308, an inner side bearing 309, a motor bracket 310, a speed reducing motor 311, a driving gear 312, a seed discharging and inoculating device 313, a seed storage box 314, a seed cleaning tooth 315, a seed disturbing mechanism 318 and a left side rotation bearing seat 320.
The negative pressure cavity disc 302 of the seed sowing device is formed by butting a left part and a right part, the inside of the negative pressure cavity disc is of a hollow structure, and the left part and the right part are fixedly connected through a butting mounting hole 319 and a bolt; the left part and the right part of the negative pressure cavity disc 302 of the seed sowing device are respectively and uniformly distributed with 2 rows of seed adsorption holes 317 and a seed disturbing mechanism 318 along the circumference; the aperture of the seed adsorption hole 317 is smaller than the minimum diameter of the seed, and the disturbance mechanism 318 is used for disturbing the population, so that the seed is easier to be adsorbed by the seed adsorption hole. The left part and the right part of the seed sowing device negative pressure cavity disc 302 are respectively connected with a left rotating bearing seat 320 and a right rotating bearing seat 305 through bolts, the right rotating bearing seat 305 is provided with an inner side bearing 309, a negative pressure pipe shaft 307 is arranged in the inner side bearing 309, and the seed sowing device negative pressure cavity disc 302 can rotate relative to the negative pressure pipe shaft 307. The left rotary bearing seat 320 is arranged in the seed metering device shell 301 through an outer side bearing 308, the right rotary bearing seat 305 is fixed on a seed metering device end cover 304 through another outer side bearing 308, and the outer end of the right rotary bearing seat 305 is provided with a driven gear 306; the upper part of the seed sowing device base 303 is connected with the seed sowing device shell 301, and the lower part is fixedly arranged on the seed sowing device mounting plate 18.
The seed meter end cap 304 and the seed meter housing 301 form a closed space, and a fixed amount of seeds can be contained in the closed space. The seeding unit end cover 304 is fixedly connected with the motor support 310 through bolts, the speed reducing motor 311 is fixedly connected with the motor support 310 through bolts, and a driving gear 312 is arranged on a shaft of the speed reducing motor. The seed box 314, the seed cleaning teeth 315 and the seed discharging and inoculating device 313 are arranged on the seed metering device shell 301.
The working principle of the negative pressure cavity synchronous rotation seed sowing device is as follows: the speed reduction motor 311 drives the driving gear 312 to rotate, the driving gear 312 is meshed with the driven gear 306, the driven gear 306 further transmits power to the right-side rotating bearing seat 305, the right-side rotating bearing seat 305 drives the seed metering device negative pressure cavity disc 302 to rotate, and the negative pressure pipe shaft 307 does not rotate along with the seed metering device negative pressure cavity disc 302 because an inner side bearing 309 is arranged between the negative pressure pipe shaft 307 and the seed metering device negative pressure cavity disc 302; negative pressure enters from a negative pressure pipe shaft 307, so that the negative pressure cavity disc 302 of the seed sowing device is in a negative pressure state, and external air can only enter through the seed adsorption hole 317 due to the sealing effect of the inner side bearing 309; the inside of the seed metering device consists of a seed charging area, a seed cleaning area, a seed carrying area and a seed discharging area 4 functional areas, seeds are adsorbed by the seed adsorption holes 317 in the seed charging area and are rotated to the seed cleaning area, and the seed cleaning teeth 315 clean redundant seeds, so that each seed adsorption hole 317 only adsorbs single seeds to enter the seed carrying area; then the seeds enter the seed unloading area, and the seeds are forcibly unloaded by the seed unloading and inoculating device 313 to finish the seed unloading. The seed-discharging and inoculating device 313 is internally divided into 4 channels which can convey 4 rows of seeds discharged by the seed metering device at intervals.
To prevent air flow from the seed discharge and inoculation device 313 into the negative pressure chamber, the upper portion of the seed meter housing 301 is provided with an air inlet 316. Because the air flow high-speed seed conveying device 9 is connected below the seed unloading and inoculating device 313 (the connection part of the two devices needs to be sealed); when the device works, positive pressure air flow is introduced into the air flow high-speed seed conveying device 9, and the direction of the positive pressure air flow is opposite to the direction of the air flow entering the negative pressure cavity, so that resistance is generated; a plurality of air inlets 316 are provided in the upper portion of the seed meter housing 301, where the resistance to air flow into the sub-atmospheric chamber is very low, so that air flow does not enter the sub-atmospheric chamber from the seed discharge inoculations 313.
The seed metering device has the advantages that: in order to achieve a good seeding effect, the traditional air-suction seeding apparatus ensures the sealing property of a negative pressure chamber by increasing the contact force between a seeding disc and a sealing gasket, so that the friction between the seeding disc and the sealing gasket is increased, the sealing gasket is easily abraded, and the problems of increased air pressure requirement, reduced operation precision and the like of the seeding apparatus are caused; the negative pressure cavity synchronously rotates the seed sowing device to combine the negative pressure cavity with the hole plate to obtain a seed sowing device negative pressure cavity plate 302, so that a closed negative pressure space is formed, the relative movement of the negative pressure cavity and the hole plate is avoided, the reliability of the seed sowing device is improved, meanwhile, the sealing effect is improved, and the air pressure loss is reduced; meanwhile, the seed sowing device can discharge 4 rows of seeds simultaneously, and seeding in a seedling belt is realized.
3) Air flow high speed seed conveyer
The air flow high-speed seed conveying device 9 is arranged below the negative pressure cavity synchronous rotation seed metering device 3 and is provided with 4 rows, one in each row; the upper part of the airflow high-speed seed conveying device 9 is connected with a seed unloading and inoculating device 313, and the connection part is sealed; the gas flow high-speed seed conveying device 9 comprises a seed inlet pipe 901, a gas-solid mixing accelerating device 902, a throat pipe 903, a seed conveying pipe 904, a connecting block 905, a seed injection pipe 906, an air inlet pipe 907, a bolt 908 and a set screw 909. The seed inlet pipe 901 is arranged below the seed unloading and inoculating device 313; a gas-solid mixing accelerating device 902 is inserted below the gas inlet pipe 901, the gas-solid mixing accelerating device 902 is of a three-way structure, and is respectively provided with a gas conveying pipe 904 and a gas inlet pipe 907 which are respectively fixed through two set screws 909; the gas-solid mixing accelerating device 902 is formed by connecting a left part and a right part through bolts 908; a throat pipe 903 is arranged in the gas-solid mixing accelerating device 902; the lower part of the seed conveying pipe 904 is provided with a connecting block 905, and the lower part of the connecting block 905 is connected with a seed feeding pipe 906;
the working principle is as follows: the gas flow enters the gas-solid mixing accelerating device 902 from the gas inlet pipe 907, the gas passes through a gap formed by the gas-solid mixing accelerating device 902 and the throat pipe 903, and the gas flow speed is accelerated because the gap area is smaller than the pipe diameter of the gas inlet pipe 907; the seeds enter from the seed inlet pipe 901, further fall through the throat 903 and are mixed with air, the seeds are accelerated by the action of high-speed air flow passing through the gap, and the accelerated seeds quickly fall through the seed conveying pipe 904 and enter the seed input pipe 906 to finish seed input. The device can accelerate the seed whereabouts, shortens the dwell time of seed at defeated kind of pipe, avoids seed and defeated kind of pipe to bump, improves the seeding homogeneity.
4) Seed pressing and compacting
The seed pressing wheel 10 is positioned behind the airflow high-speed seed conveying device 9 and is used for pressing seeds falling at a high speed into soil, so that the seeds are prevented from bouncing, and the consistency of the seeding plant spacing can be improved; the pressure wheel mounting bracket 15 is hinged with a pressure wheel pre-tightening device 16, and a spring is arranged in the pressure wheel pre-tightening device 16 and can enable the pressure wheel to be tightly attached to the ground surface; the soil covering device 11 is positioned behind the seed pressing wheel 10 and is used for backfilling soil on two sides of the seed ditch and covering seeds. And the press wheel 12 is positioned behind the soil coverer 11 and is used for compacting the soil covered above the seeds.
The above embodiments are merely illustrative, and not restrictive, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the invention, and therefore all equivalent technical solutions also belong to the scope of the invention.
Those not described in detail in this specification are within the skill of the art.
Claims (8)
1. The utility model provides a high-speed precision seeding monomer of negative pressure chamber synchronous rotation type which characterized in that includes: the seed sowing device comprises a seed box (1), a seed box front support (2), a negative pressure cavity synchronous rotating seed sowing device (3), a cross beam (4), a monomer connecting plate (5), a parallel connecting rod (6), a furrow opener connecting square tube (7), a furrow opener (8), an air flow high-speed seed conveying device (9), a seed pressing wheel (10), a soil covering device (11), a pressing wheel (12), a pressing wheel mounting support (13), a soil covering device mounting support (14), a seed pressing wheel mounting support (15), a seed pressing wheel pre-tightening device (16), monomer side plates (17), a seed sowing device mounting plate (18), a connecting pipe (19) and a seed box rear support (20);
the seeding single body is arranged on a main beam of the seeding machine through a single body connecting plate (5), and the parallel connecting rods (6) are hinged with the single body connecting plate (5) and the cross beam (4) so as to realize floating profile modeling of the seeding single body; the furrow opener connecting square tube (7) is a hollow square tube and is welded in front of the cross beam (4); the furrow opener (8) is inserted into the furrow opener connecting square pipe (7) and can be fixed at the upper and lower positions through bolts; the bottom of a seed box front support (2) is welded on the upper part of the cross beam (4), a seed box (1) is supported above the negative pressure cavity synchronous rotating seed metering device (3) through the seed box front support (2), and seeds in the seed box can enter the negative pressure cavity through a connecting pipe (19) to synchronously rotate the seed metering device (3); the air flow high-speed seed conveying device (9) is arranged below the negative pressure cavity synchronous rotation seed metering device (3) and is used for receiving seeds falling from the seed metering device, accelerating the seeds and then conveying the seeds; the lower end of the rear bracket (20) of the seed box is connected with a single side plate (17);
the single side plates (17) are 2, the front ends of the 2 single side plates (17) are symmetrically welded at the left end and the right end of the cross beam (4) respectively, a seed sowing device mounting plate (18) is welded at the upper part of the single side plates, three hinge points are distributed at the lower part of the single side plates and are respectively used for hinging a press wheel mounting bracket (13), a soil covering device mounting bracket (14), a press wheel mounting bracket (15) and a press wheel pre-tightening device (16); the press wheel mounting bracket (13) and the coverer mounting bracket (14) are coaxially mounted; the seed metering device mounting plate (18) is used for fixedly mounting a negative pressure cavity to synchronously rotate the seed metering device (3);
the seed pressing wheel (10) is positioned behind the airflow high-speed seed conveying device (9) and is used for pressing seeds falling at a high speed into soil, so that the seeds are prevented from bouncing, and the consistency of the seeding plant spacing can be improved; the pressure wheel mounting bracket (15) is hinged with the pressure wheel pre-tightening device (16), and a spring is arranged in the pressure wheel pre-tightening device (16) and can enable the pressure wheel to be tightly attached to the ground surface; the soil covering device (11) is positioned behind the seed pressing wheel (10) and is used for backfilling soil on two sides of the seed ditch and covering seeds; and the press wheel (12) is positioned behind the soil covering device (11) and is used for compacting the soil covered above the seeds.
2. The negative-pressure-cavity synchronous-rotation-type high-speed precision seeding unit according to claim 1, characterized in that: the negative pressure cavity synchronous rotation seed metering device (3) is fixedly arranged above a seed metering device mounting plate (18) through bolts, the negative pressure cavity synchronous rotation seed metering device (3) comprises a seed metering device shell (301), a seed metering device negative pressure cavity disc (302), a seed metering device base (303), a seed metering device end cover (304), a right side rotation bearing seat (305), a driven gear (306), a negative pressure pipe shaft (307), two outer side bearings (308), an inner side bearing (309), a motor support (310), a speed reducing motor (311), a driving gear (312), a seed discharging and inoculating device (313), a seed storage box (314), seed cleaning teeth (315), a seed disturbing mechanism (318) and a left side rotation bearing seat (320);
the negative pressure cavity disc (302) of the seed sowing device is formed by butting a left part and a right part, the inside of the negative pressure cavity disc is of a hollow structure, and the left part and the right part are fixedly connected through a butting mounting hole (319) and a bolt; the left part and the right part of the negative pressure cavity disc (302) of the seed metering device are respectively and uniformly distributed with 2 rows of seed adsorption holes (317) and seed disturbing mechanisms (318) along the circumference; the aperture of the seed adsorption hole (317) is smaller than the minimum diameter of the seed, and the seed disturbing mechanism (318) is used for disturbing the population, so that the seed is easier to be adsorbed by the seed adsorption hole; the left part and the right part of the negative pressure cavity disc (302) of the seed sowing device are respectively connected with a left rotating bearing seat (320) and a right rotating bearing seat (305) through bolts, an inner side bearing (309) is installed on the right rotating bearing seat (305), a negative pressure pipe shaft (307) is installed in the inner side bearing (309), and the negative pressure cavity disc (302) of the seed sowing device can rotate relative to the negative pressure pipe shaft (307); the left rotary bearing seat (320) is arranged in the shell (301) of the seed metering device through an outer side bearing (308), the right rotary bearing seat (305) is fixed on an end cover (304) of the seed metering device through another outer side bearing (308), and the outer end of the right rotary bearing seat (305) is provided with a driven gear (306); the seed metering device end cover (304) and the seed metering device shell (301) form a closed space, and a certain amount of seeds can be contained in the closed space.
3. The negative-pressure-cavity synchronous-rotation-type high-speed precision seeding unit according to claim 2, characterized in that: the seeding unit end cover (304) is fixedly connected with the motor support (310) through bolts, the speed reducing motor (311) is fixedly connected with the motor support (310) through bolts, a driving gear (312) is installed on a speed reducing motor shaft, and the driving gear (312) is meshed with the driven gear (306).
4. The negative-pressure-cavity synchronous-rotation-type high-speed precision seeding unit according to claim 2, characterized in that: the seed metering device shell (301) is provided with a seed storage box (314), a seed cleaning tooth (315) and a seed discharging and inoculating device (313).
5. The negative-pressure-cavity synchronous-rotation-type high-speed precision seeding unit according to claim 2, characterized in that: an air inlet (316) is arranged at the upper part of the seed metering device shell (301).
6. The negative-pressure-cavity synchronous-rotation-type high-speed precision seeding unit according to claim 2, characterized in that: the upper part of the seed metering device base (303) is connected with the seed metering device shell (301), and the lower part is fixedly arranged on the seed metering device mounting plate (18).
7. The negative-pressure-cavity synchronous-rotation-type high-speed precision seeding unit according to claim 2, characterized in that: the air flow high-speed seed conveying device (9) is arranged below the negative pressure cavity synchronous rotating seed metering device (3), and 4 rows are arranged, one in each row; the upper part of the air flow high-speed seed conveying device (9) is connected with a seed unloading and inoculating device (313), and the connection part is sealed; the gas flow high-speed seed conveying device (9) comprises a seed inlet pipe (901), a gas-solid mixing accelerating device (902), a throat pipe (903), a seed conveying pipe (904), a connecting block (905), a seed feeding pipe (906), a gas inlet pipe (907), a bolt (908) and a set screw (909); the seed inlet pipe (901) is arranged below the seed unloading and inoculating device (313); a gas-solid mixing accelerating device (902) is inserted below the gas inlet pipe (901), the gas-solid mixing accelerating device (902) is internally of a three-way structure, a gas conveying pipe (904) and a gas inlet pipe (907) are respectively installed on the gas-solid mixing accelerating device and are respectively fixed through two set screws (909); a throat pipe (903) is arranged in the gas-solid mixing accelerating device (902); the lower part of the seed conveying pipe (904) is provided with a connecting block (905), and the lower part of the connecting block (905) is connected with a seed feeding pipe (906).
8. The negative-pressure-cavity synchronous rotation type high-speed precision seeding unit according to claim 7, characterized in that: the gas-solid mixing accelerating device (902) is formed by connecting a left part and a right part through bolts (908).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110126289.1A CN112840810A (en) | 2021-01-29 | 2021-01-29 | Negative pressure cavity synchronous rotation type high-speed precision seeding monomer |
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|---|---|---|---|
| CN202110126289.1A CN112840810A (en) | 2021-01-29 | 2021-01-29 | Negative pressure cavity synchronous rotation type high-speed precision seeding monomer |
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| CN112840810A true CN112840810A (en) | 2021-05-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115104408A (en) * | 2022-05-25 | 2022-09-27 | 吉林省农业机械研究院 | Cavity type wheel pressing injection mechanism |
| CN116326290A (en) * | 2023-03-08 | 2023-06-27 | 青岛理工大学 | Annular gap injection seed airflow guide device and method for high-speed precision seeding operation |
-
2021
- 2021-01-29 CN CN202110126289.1A patent/CN112840810A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115104408A (en) * | 2022-05-25 | 2022-09-27 | 吉林省农业机械研究院 | Cavity type wheel pressing injection mechanism |
| CN115104408B (en) * | 2022-05-25 | 2023-10-24 | 吉林省农业机械研究院 | Seed mechanism is penetrated to cavity type seed pressing wheel |
| CN116326290A (en) * | 2023-03-08 | 2023-06-27 | 青岛理工大学 | Annular gap injection seed airflow guide device and method for high-speed precision seeding operation |
| CN116326290B (en) * | 2023-03-08 | 2024-03-19 | 青岛理工大学 | Annular gap injection seed airflow guide device and method for high-speed precision seeding operation |
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