An apparatus 100 is described for precision volumetric metering and distribution of solid inputs used in agriculture, the apparatus being coupled to sowing devices and comprising a frame 1 with a through-hole 12 through which an axle 3 radially locked to a turbine 4 extends, the axle 3 driving the metering turbine 4; an opening 21 in the floor of the frame leads the agricultural input 31 to the output nozzle 13. The geometry of the turbine 4 comprises cutouts of various shapes which form chambers 5 for distributing the agricultural input 31 uniformly. A labyrinth 25 is formed by the frame 1, the inner grater 6 and the turbine 4. The structural geometry of the turbine 4 only allows metering of the input 31 while the turbine is rotating, while the agricultural input 31 is retained inside and on the turbine 4 when the turbine does not rotate.

A profile insert for a meter roller of an agricultural metering system includes a flute and a recess positioned adjacent to one another along a circumferential axis of the profile insert. The flute and the recess are configured to meter flowable particulate material from a storage tank to a material distribution system via rotation of the profile insert. The profile insert also includes at least one locking element configured to substantially block circumferential rotation of the profile insert relative to a spindle. In addition, the profile insert is configured to extend about only a portion of a circumference of the spindle.

The present document discloses a meter housing for feeding granular or powdered material. The meter housing comprises a meter space with a material inlet and a material outlet, and a wall portion extending between the material inlet and the material outlet. The wall portion has substantially the form of a cylinder sector. The wall portion has a scraper part, which extends substantially parallel to a central axis of the cylinder sector.

A seed metering system, for use on a row crop planter, selects individual seeds from a seed reservoir and dispenses the seeds singularly at a controlled rate. A direct drive seed metering system includes a seed disc having a plurality of suction apertures with a recessed pocket adjacent to an aperture. The recessed pockets act to agitate seeds in the seed reservoir and to direct seed flow towards the apertures. A seed path relief system provides for allowing the placement of the seeds such that they are released from an outer edge of the seed disc. An adjustable seed singulator is mounted adjacent to the face of the seed disc where inner and outer blades are adjusted radially to compensate for the singulation of various seed sizes and shapes. The seed disc is driven via engagement of an internal gear with the external gear of an independent drive motor.

A meter roller for an agricultural metering system includes a spindle having a driven shaft, a first ring, and a second ring. The first ring and the second ring are rigidly coupled to the driven shaft, and the driven shaft is configured to engage a drive shaft to facilitate rotation of the spindle. The meter roller also includes a sealing ring longitudinally disposed between the first ring and the second ring. An outer diameter of the sealing ring is less than or equal to an outer diameter of the first ring and an outer diameter of the second ring, and the sealing ring is formed from a material having sufficient resilience to enable the sealing ring to stretch to facilitate disposition of the sealing ring between the first ring and the second ring.

A seed metering system, for use on a row crop planter, selects individual seeds from a seed reservoir and dispenses the seeds singularly at a controlled rate. A direct drive seed metering system includes a seed disc having a plurality of suction apertures with a recessed pocket adjacent to an aperture. The recessed pockets act to agitate seeds in the seed reservoir and to direct seed flow towards the apertures. A seed path relief system provides for allowing the placement of the seeds such that they are released from an outer edge of the seed disc. An adjustable seed singulator is mounted adjacent to the face of the seed disc where inner and outer blades are adjusted radially to compensate for the singulation of various seed sizes and shapes. The seed disc is driven via engagement of an internal gear with the external gear of an independent drive motor.

The invention relates to a metering device (5) for granular material, in particular seeds and/or fertilizer, where the metering device (5) comprises a metering housing (9) having at least one inlet (8) and at least one outlet (11) for the granular material and two side walls (10) that are arranged spaced from one another, where a metering wheel (13) with end faces (13a) each pointing toward the side walls (10) is arranged between, firstly, the inlet (8) and, secondly, the outlet (11), and between the side walls (10), that are arranged spaced from one another, on a shaft and is connectable in a force-fit manner to the latter and can be driven to rotate by the shaft in a metering direction (D), where the metering wheel (13) is associated with blocking means (14) which are configured to block the metering wheel (13) against the transport of granular material in a direction opposite to the metering direction (D) from the inlet (8) to the outlet (11) and/or in the metering direction (D) from the outlet (11) to the inlet (8), and a plain wheel (15) is arranged at each end face (13a) of the metering wheel (13) and extends between the end face (13a) and the side wall (10) in an unfastened manner on the shaft, where a sealing element (16) is arranged on both sides between the respective end face (13a) of the metering wheel (13) and a side surface (15a) of the respective plain wheel (15) pointing toward this end face (13a).

A flow control insert for an agricultural metering system includes a body configured to couple the flow control insert to a housing of the agricultural metering system. The flow control insert also includes a shoulder extending from the body. The shoulder is configured to engage a channel in a meter roller to control flow of particulate material within the channel along a rotational direction of the meter roller.

A flow control insert for an agricultural metering system includes a head configured to couple the flow control insert to a housing of the agricultural metering system. The flow control insert also includes a tongue extending from the head. The tongue is configured to engage a channel in a meter roller of the agricultural metering system to substantially block flow of particulate material through the channel in a circumferential direction opposite a rotational direction of the meter roller.

A meter roller for an agricultural metering system includes multiple flutes and recesses. The flutes and recesses are arranged on one or more segments in one or more respective alternating patterns along a circumferential axis of the meter roller, and the flutes and recesses are configured to meter flowable particulate material from a storage tank to a material distribution system via rotation of the meter roller. In addition, each segment includes at least 12 flutes, each segment includes at least 12 recesses, and an aggregate volume of the recesses is between about 80,000 mm.sup.3 and about 84,000 mm.sup.3.