Fertilizer Metering Mechanism With Helical Conic Cylindrical Thread for Family Agriculture

Galvão, Cezário Benedito; Albiero, Daniel; García, Ángel Pontín; Monteiro, Leonardo de Almeida

doi:10.1590/1809-4430-eng.agric.v38n6p934-940/2018

Cited by 5 publications

(8 citation statements)

References 13 publications

(11 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This mechanism is found in the seed planter market in three models: helical screw feeders by gravity, overflow longitudinally or lateral. The parameter that best qualifies the work of the helical feeders is the coefficient of variation [5,6,7,8,4,9] which indicates the percentage of irregularity of a certain variable observed, so the lower the value, the better the performance of the mechanism.…”

Section: Introductionmentioning

confidence: 99%

Methodology to Evaluate the Fertilizer Distribution by Helical Doser from Seed Planter

Rosa

Pagnussat

Alves

et al. 2019

JEAI

View full text Add to dashboard Cite

This article aims to develop a precision methodology, to evaluate the work of a helical doser from a seed planter. The experiment was carried out in two conditions, a bench in laboratory, and, in a seed planter in the field, comparing the proposed evaluation methodology in the laboratory, linear methodology (LM), against the ISO 5690/2 (1984) method. In the laboratory's test, it was tested: 0°, +11° and -11° slope of doser. In LM, it was used a metal gutter with 125 polyethylene collectors, both placed next to the other. In the field, it was used only LM, and for such two doses were tested, 250 and 440kg ha -1 . The variation coefficient (VC) in the LM, the 0º condition performed with the best dosage, varying from 10.15% to 13.76%, against 13.95% to 17.84% in the + 11° slope and 11.86% to 13.79% in the -11º. The VC compared in ISO 5690/2 method shows a very different Rosa et al.; JEAI, 31(5): 1-7, 2019; Article no.JEAI.46242 2 result, indicating variations from 0.7 to 2.3%, which is 88% smaller than LM. In field, the VC increased to 25.70% to 40.96%. Comparing the VC of ISO 5690/2 with the field test, the differences are even bigger, 2.3% compared to 40.96%. The LM presents concise data to clearly observe variations in the working conditions of the fertilizer helical doser. Method Article

show abstract

Section: Introductionmentioning

confidence: 99%

Methodology to Evaluate the Fertilizer Distribution by Helical Doser from Seed Planter

Rosa

Pagnussat

Alves

et al. 2019

JEAI

View full text Add to dashboard Cite

show abstract

“…Thus, the problem of the other metering mechanisms is related to the spaces (gaps) between the thread and the body of mechanisms, as well as the spaces in the center of the thread hollow helicoid, where fertilizer drips when seedcum-fertilizer drills are under operation on inclinations, corroborating with Reynaldo & Gamero (2015). In addition, the better performance of the metering mechanism M4 occurred because it works with a fuller helicoid than to the others, corroborating with Garcia et al (2012) and Galvão et al (2018), who pointed out that constructive characteristics aiming at the reduction of empty spaces and hence the gravity action allow an increase in the efficiency of fertilizer-metering mechanisms. Each metering mechanism has speed ranges in which the helicoid assists more efficiently the fertilizer flow, providing better distribution (Camacho-Tamayo et al, 2009;Bonotto et al, 2013).…”

Section: Methodsmentioning

confidence: 61%

“…There is, therefore, a gap in the market of fertilizermetering mechanisms due to the growing use of fertilizers with different low-dose formulations, which should receive higher attention from manufacturers and research institutions. An alternative would be modifications in the design, perhaps with the use of a tapered thread, as proposed by Galvão et al (2018), or the use of smaller helicoid pitches.…”

Section: Methodsmentioning

confidence: 99%

“…These metering mechanisms have dose variations that can reach 70% (Reynaldo & Gamero, 2015;Garcia et al, 2017;Rosa et al, 2019). In addition to the constructive characteristics (Garcia et al, 2012;Galvão et al, 2018), working inclination and fertilizer moisture and particle size (Reynaldo & Gamero, 2015;Spagnolo et al, 2018) are the main factors that influence this dose variation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Performance of Helical Metering Mechanisms in the Application of Microgranular Fertilizer

et al. 2020

View full text Add to dashboard Cite

The use of microgranular fertilizers is currently increasing, with low application rates as an obstacle in the mechanization. This study aimed to verify the performance of helical metering mechanisms using microgranular fertilizer. Four different fertilizer-metering mechanisms were tested at two pre-established dose rates (35 and 50 kg ha −1) and seven longitudinal angles (−15°, −10°, −5°, 0°, +5°, +10°, and +15°). The experiment was carried out according to Brazilian standards. The results showed that the longitudinal inclination affects the actual fertilizer dose in all tested metering systems. Metering mechanisms with a helicoid with longitudinal and lateral overflow presented a similar dose, according to the variation of the longitudinal inclination. The metering mechanism with two helicoids showed the highest dose variation, while the metering mechanism with a helical thread and longitudinal overflow, filled between the shaft and the helicoid, had the best performance.

show abstract

“…Helical fertilizer meterings have dosage variations that can reach 70% (Reynaldo & Gamero, 2015;Garcia et al, 2017;Rosa et al, 2019). Size, profile, and rotation of the helicoid (Garcia et al, 2012;Galvão et al, 2018); the inclination of work, and fertilizer humidity and granulometry (Franck et al, 2015;Reynaldo & Gamero, 2015) are the main factors that influence the dosage variation.…”

Section: Introductionmentioning

confidence: 99%

Models for predicting the performance of fertilizer metering in seed cum fertilizer drill

Spagnolo

Rosa

Pinho

et al. 2021

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

This study aimed to establish mathematical models that predict the performance of helical fertilizer metering according to the longitudinal and transverse inclinations, angular speed, and helical pitch. Laboratory tests were carried out with helical meterings with lateral and longitudinal discharge through overflow and with two helicoids, working at an angular speed of 16 and 46 rpm at the following longitudinal inclination angles: -20, -15, -10, -5, 0, +5, +10, +15, and +20° and on the transverse axis: -15, -10, -5, 0, +5, +10, and +15°. It was found that the variation of the transverse inclination has little effect on the dosage. When using fertilizer metering with a helicoid, the higher the longitudinal inclination, the greater the dosage in a linear manner, while the meterings with two helicoids provided less oscillation of the dosages according to the inclinations.

show abstract

Fertilizer Metering Mechanism With Helical Conic Cylindrical Thread for Family Agriculture

Cited by 5 publications

References 13 publications

Methodology to Evaluate the Fertilizer Distribution by Helical Doser from Seed Planter

Methodology to Evaluate the Fertilizer Distribution by Helical Doser from Seed Planter

Performance of Helical Metering Mechanisms in the Application of Microgranular Fertilizer

Models for predicting the performance of fertilizer metering in seed cum fertilizer drill

Contact Info

Product

Resources

About