Abstract:
A seed dispenser and conveyor system applied in agricultural tools with a circular structural base ( 20 ) equipped with lid ( 22 ), and an angled vertical base ( 21 ) equipped with lid ( 23 ), on the upper part of the base ( 20 ) presenting a seed box ( 30 ), a vacuum turbine ( 40 ) and a cutting disk ( 50 ), with the system actuated by a bar ( 223 ) and gear ( 222 ) rotating the selector disk (VI) in a clockwise movement, transmitting the movement to the hollowed gears (B 1 , C 1 , D 1 , and E 1 ) equipped with spacing that conveys the seed ( 60 ) to the releasing ramp ( 211 ), producing synchronized movements in opposed directions, uniformly conveying the seeds and not being subject to trepidation in the seeding line or any type of lateral, frontal and rear inclination, besides keeping the correct distance up to the seeding groove, and reducing the seed variation coefficient in the seeding line.

Description:
FIELD OF THE INVENTION 
     The present invention describes a seed dispenser and conveyor system for agricultural tools. 
     More specifically, it comprises a system of hollowed gears with curved, square, oblique or rectangular positioners between its spacing openings, which house the seeds from the selector system to the seeding grooves, producing synchronized movements in opposite directions uniformly conveying the seeds, not being subject to trepidation in the seeding line as well any type of lateral, frontal or rear inclination, besides keeping the correct distance until the seeding grooves, reducing the seed variation coefficient in the seeding line. 
     BACKGROUND OF THE INVENTION 
     In the seeds cultivation, it is well known that seed quality and distribution in the soil are essential for a good performance. 
     It is estimated that, for each failure percentage in the planting (dig with no seed), or for each percentage of “double” seeding (two seeds per dig) there is a 3.3% loss in productivity. 
     Furthermore, there is a greater loss due to irregular distancing of the seeds, i.e., the variation coefficient (VC) of the distancing between grains, providing a productivity loss from 1.5 to 3 bags per hectare for each 10% variation of the variation coefficient (VC). 
     Nowadays, seeders for planting comprise a seed conveyor tube from the selector system to the seeding groove. 
     The seed is transported from the conveyor tube to the internal part of the system, free falling from an average height of seven hundred millimeters until the seeding groove, this system, besides generating uneven distribution and high variation coefficient due to the disorderly fall of seeds, it does not have any regulation device to control seeds deposition, and may also have sensors in the center of the conveyor tube that prevent the seed from sliding straightforwardly in the seeding grooves, resulting in an uneven deposition. 
     These systems operate with a variation of the variation coefficient (VC) from 30% to 80%, having a productivity loss from 4.5 to 25 bags per hectare. 
     Therefore, the object of the present invention is a seed dispenser and conveyor system applied in agricultural tools developed with a set of hollowed gears and curved, square, oblique or rectangular positioners between its spacing openings which, through synchronized counter-clockwise and clockwise movements, regulate the seeds fall in the seeding line, reducing the variation coefficient to almost zero, since it positions the seeds into the correct spaces minimizing the uneven distribution, eliminating bounce and contributing to the productivity per hectare improvement. 
     Furthermore, hollow gears do not allow clogging for being grooved or hollowed and cleaned by the scrapers or ejectors, being able to stand any ascending, descending or lateral movement of the seeder without affecting the system accuracy. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  shows the perspective frontal view of the seed dispenser and conveyor system applied in agricultural tools. 
         FIG. 2  shows the posterior view of the seed dispenser and conveyor system, showing disks and gears system. 
         FIG. 3  shows the enlarged perspective posterior view of the system gears. 
         FIG. 4  shows in detail the circular structural base ( 20 ) and the angled vertical base ( 21 ) equipped with lid ( 22 ) and ( 23 ). 
         FIG. 5  shows in detail the selector disk (V 1 ) and the set of hollowed disks (B 1 , C 1 , D 1 , and E 1 ). 
         FIG. 6  shows in detail the selector disk (V 1 ) with the hollowed disk (B 1 ), and the  FIG. 6A  details the hollowed disk (E 1 ) and releasing ramp ( 211 ). 
         FIG. 7  shows the enlarged posterior view of the structural base ( 20 ) and lid ( 22 ), and  FIG. 7A  shows the vacuum sealing system. 
         FIG. 8  shows the frontal view of the system with details of the coil ( 73 ) and ejection gears ( 70 ). 
         FIG. 9  shows in detail the ejection gears ( 70 ) and the dispenser system for agricultural tools. 
         FIG. 10  shows the enlarged posterior view of the system, highlighting double seeds eliminators ( 205  and  206 ). 
         FIG. 11  shows a frontal view of the selector disk (V 1 ) with wavy edges (V 4 ) and the hollowed disk (B 1 ) with wavy edges (B 5 ). 
         FIG. 12  shows a posterior view of the circular structural base ( 20 ) with the seed conveyor tube ( 80 ), and  FIG. 12A  presents a frontal view of the circular structural base ( 20 ) with the seed conveyor tube ( 80 ). 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The seed dispenser and conveyor system for agricultural tools, object of the present invention, comprises a chassis ( 10 ) supporting the circular structural base ( 20 ) equipped with lid ( 22 ) and an angled vertical base ( 21 ) equipped with protection lid ( 23 ); said circular structural base ( 20 ) with lid ( 22 ) presents on its upper part a seed box ( 30 ), a vacuum turbine ( 40 ) that feeds and generates suction in the seed dispenser system through a pipe ( 41 ) connected with the circular base ( 20 ) and a cutting disk ( 50 ), uniformly distributing the seeds ( 60 ) in the soil. 
     The circular structural base ( 20 ) has internally a selector disk (V 1 ) with spaces (V 2 ) that receive the seeds ( 60 ) from the seed box ( 30 ) and teeth (V 3 ), which transmit the movement to the hollowed gears (B 1 ). 
     The selector disk (V 1 ) presents the wavy external edge (V 4 ) fitting the wavy edge (B 5 ) of the gear (B 1 ), allowing the selector disk (V 1 ) to fit into the correct spot of the gear (B 1 ), ensuring the seeds ( 60 ) to be conveyed from the selector disk (V 1 ) to the spacing (B 2 ) along the gear (B 1 ), maintaining the operation synchronism of the seed dispenser and conveyor system. 
     The angled vertical base ( 21 ) has internally a set of interconnected hollowed gears (B 1 , C 1 , D 1 , and E 1 ) which direct the seeds ( 60 ) from the selector disk (V 1 ) to the seeding groove together with the soil. 
     The hollowed gear (B 1 ) presents a spacing (B 2 ) to receive the seeds from the selector disk (V 1 ), a movement gear (B 3 ) interconnected to the teeth (V 3 ) arranged in the selector disk (V 1 ), which enable the hollowed disk (B 1 ) and the gear (B 4 ) to move, transmitting the movement to the disk (C 1 ). 
     The hollowed gear (B 1 ) presents a wavy external edge (B 5 ) fitting the wavy edge (V 4 ) of the selector disk (V 1 ), maintaining the operation synchronism of the seed dispenser and conveyor system. 
     The hollowed gear (C 1 ) presents a spacing (C 2 ) to receive the seeds from the hollowed gear (B 1 ), a movement gear (C 3 ) interconnected to the teeth (B 4 ) arranged in the hollowed gear (B 1 ), which enable the movement of the hollowed disk (C 1 ) and the movement gear (C 4 ), which transmits the movement to the gear (D 1 ). 
     The hollowed gear (D 1 ) presents a spacing (D 2 ) to receive the seeds from the hollowed gear (C 1 ), a movement gear (D 3 ) interconnected to the teeth (C 4 ) arranged in the hollowed gear (C 1 ), which enable the movement of the hollowed gear (D 1 ) and the movement gear (D 4 ), which transmits the movement to the gear (E 1 ). 
     The hollowed gear (E 1 ) presents a spacing (E 2 ) to receive the seeds from the hollowed gear (D 1 ), a movement gear (E 3 ) interconnected to the teeth (D 4 ) arranged in the hollowed gear (D 1 ), which enable the movement of the hollowed gear (E 1 ), directing the seeds ( 60 ) to the seeding groove. 
     The circular structural base ( 20 ) presents, in its internal structure, a pair of rubbers ( 201 ) equipped with a variable fitting system ( 202 ) that allows changing the seeds point of release for 6 hours. 
     Furthermore, it describes the protrusion ( 203 ) that fits the lid ( 22 ) allowing an easy fit, and on the front portion it presents a drill ( 204 ) of pipe fit ( 41 ) from the vacuum turbine ( 40 ). 
     The lid ( 22 ) is fitted into the circular structural base ( 20 ) through couplings ( 221 ), which are connected to the protrusions ( 203 ) of the base ( 20 ), on the posterior portion there is a traction gear ( 222 ) equipped with an activation bar ( 223 ) transmitting the movement to the selector disk (V 1 ), providing movement and actuation of the entire system. 
     The seed dispenser and conveyor system is activated through the traction gear ( 222 ), which transmits the movement to the selector disk (V 1 ) through an actuation bar ( 223 ) performing the clockwise movement of the disk (V 1 ). 
     In the posterior portion of the circular structural base ( 20 ), the pipe ( 41 ) is coupled from the vacuum turbine ( 40 ), which generates vacuum suction inside the circular base ( 20 ) when coupled to the lid ( 22 ), being the vacuum generated between the pair of rubbers ( 201 ). 
     When the selector disk (V 1 ) moves, it passes with its spacing (V 2 ) between the pair of rubbers ( 201 ), positioning with the vacuum the seeds ( 60 ) from the seed box ( 30 ) in the spacing (V 2 ) of the selector disk (V 1 ), being the suction generated by the vacuum turbine ( 40 ) fixed to the seed ( 60 ) in the spacing (V 2 ) of the selector disk (V 1 ). 
     The system presents double seeds eliminators ( 205 ) and ( 206 ), arranged inside the base ( 2 ) releasing the seeds one by one in the spacing (B 2 ) of the hollowed gear (B 1 ), presenting the release position of 6 hours, as set through the variable fitting system ( 202 ). 
     The hollowed gear (B 1 ), with a counter-clockwise movement receives the seeds ( 60 ) in its spacing (B 2 ) and directs them to the hollowed gear (C 1 ). 
     The disks (V 1 ) and the gear (B 1 ) present wavy edges (V 4 ) and (B 5 ), which allow the operation synchronism of the seed dispenser and conveyor system. 
     The hollowed gear (C 1 ) moving in a clockwise direction, receives the seeds ( 60 ) in its spacing (C 2 ) and directs them to the hollowed gear (D 1 ). 
     The hollowed gear (D 1 ) moving in a counter-clockwise direction, receives the seeds ( 60 ) in its spacing (D 2 ) and directs them to the hollowed gear (E 1 ). 
     The hollowed gear (E 1 ) moving in a clockwise direction, receives the seeds ( 60 ) in its spacing (E 2 ) and directs them to the releasing ramp ( 211 ), with approximately 50 mm of the seeding groove in the soil with uniform distancing and distribution. 
     The releasing ramp ( 211 ) presents a spring mechanism ( 212 ) to position the seeds, enabling the uniform release with the correct seeding space in the planting. 
     The hollowed gears (B 1 , C 1 , D 1 , and E 1 ) present ejection gears ( 70 ) in the internal part of each disk, being the ejection gears ( 70 ) fitted into the spacing (B 2 , C 2 , D 2 , and E 2 ) of the gears (B 1 , C 1 , D 1 , and E 1 ), preventing the seeds from remaining stuck and not being conveyed to the releasing ramp ( 211 ) with a spring ( 212 ). 
     The seed guide ( 71 ) is coupled to the ejection gears ( 70 ), which remains connected to the gear ( 70 ) by the linking arm ( 72 ), both gear ( 70 ) and conveyor ( 71 ) are pressed to remain in their positions by the spring ( 73 ) and the ejection gear support ( 74 ), making all seeds being transferred from the hollowed gears (B 1 , C 1 , D 1 , and E 1 ) to the releasing ramp ( 211 ). 
     Alternatively, the number of hollowed gears (B 1 , C 1 , D 1 , and E 1 ) may be varied according to the need and space of the seeding machinery, and some gears may be added or removed, but they must be synchronized with the selector disk (V 1 ). 
     Alternatively, the seed dispenser and conveyor system allows the angled vertical base ( 21 ) equipped with hollowed gears (B 1 , C 1 , D 1 , and E 1 ) to be replaced for a seed conveyor tube ( 80 ), coupled to the circular structural base ( 20 ) equipped with a selector disk (V 1 ). 
     For this system operation, it is used a seed conveyor with self-adjustable pressure ( 81 ), allowing the seeds to be released in the very center of the conveyor tube ( 80 ). 
     In order to use this system, it is necessary to adjust the variable fitting system ( 202 ) arranged near the rubbers ( 201 ) of the circular base ( 20 ), adjusting the vacuum cut within 5 hours, reducing the freefall height of the seeds in approximately 150 mm to the soil, with less rebound and a better seed distribution, according to the descriptions of  FIGS. 12 and 12A .