scholarly journals Development and Evaluation of Solenoid-Actuated Check Valve for Electro-Mechanical Inclined Plate Metering System Under Laboratory Conditions

2021 ◽  
Vol 108 (1-3) ◽  
pp. 1-4
Author(s):  
Jany Giles A ◽  
◽  
Surendrakumar A ◽  
Keyword(s):  
Measurement System ◽  
Check Valve ◽  
Inclined Plate ◽  
Valve System ◽  
Laboratory Conditions ◽  
Maize Seeds ◽  
Furrow Opener ◽  
Electronic Measurement ◽  
Seed Placement ◽  
Type Of Delivery

The seeds in the conventional seed metering mechanism are metered and transferred through seed tube to the furrow created by the furrow opener. In this type of delivery, non-uniformity occurs due to the uncontrolled seed falling through seed tube from the metering device to the furrow. In conventional precision planters, the seed rate is controlled, whereas placement of seeds in furrow cannot be controlled. To achieve control over seed placement in the furrow, the solenoid-actuated check valves have been developed and fixed to the electro mechanical inclined metering system. The check valve system was tested with an opto electronic measurement system in laboratory conditions. For CO 6 variety of maize seeds, the quality feed index, missing index, multiple index and precision indexes found out as 86.2 – 89.6 %, 8 – 11.8 %, 1.9 – 2.9 % and 14.6 to 16.5 %, respectively. Using solenoidactuated check valve, the precision index of the developed electro mechanic metering system (14.6 – 16.5 %) increased.

Determination of cores electrification during the flow in the modified Wurster apparatus

2016 ◽  
Vol 1 (20) ◽  
pp. 5-15
Author(s):  
Wojciech Ludwig ◽  
Tadeusz Mączka
Keyword(s):  
Measurement System ◽  
Charge Accumulation ◽  
Laboratory Conditions ◽  
Pharmaceutical Materials

The purpose of this paper was presentation of the value of cores electrification during their flow in the modified Wurster apparatus, applied for dry encapsulation of pharmaceutical materials. Previous works of the authors dealt with vulnerability of the particles of different diameter, produced by SYNTAPHARM (Cellets 1000, 700 and 100) on electrification in laboratory conditions. The presented work gives the results of examination on particles electrification in real conditions of their stable circulation in a column. The measurement system, that was applied, allowed determination of electrification potential and electrification current. Those quantities, which are the measures of charge accumulation on cores were determined for several particles (Cellets 1000, 700 and 500) with the different humidity, for different mass of the bed and spouting gas velocities.

No-tillage furrow opener performance: a review of tool geometry, settings and interactions with soil and crop residue

Soil Research ◽  
2020 ◽  
Vol 58 (7) ◽  
pp. 603
Author(s):  
Kojo Atta Aikins ◽  
James B. Barr ◽  
Mustafa Ucgul ◽  
Troy A. Jensen ◽  
Diogenes L. Antille ◽  
...  
Keyword(s):  
Rake Angle ◽  
Soil Disturbance ◽  
Future Research ◽  
Tool Geometry ◽  
Vertical Force ◽  
No Tillage ◽  
Subsurface Soil ◽  
Furrow Opener ◽  
Seed Placement ◽  
Depth Increase

The primary features of an effective and efficient furrow opener include controlled soil disturbance and low draught and vertical force requirements. When integrated in a no-tillage seeding system, furrow openers should also have the ability to assist, and not hinder, the functions of seeding system components – such as maintaining adequate surface residue distribution, accurate and uniform placement of seeds and fertiliser, and regular inter-plant spacing. This review highlights how these goals are affected by opener type, geometry and settings, and soil and residue conditions. Typically, tine openers cause greater soil disturbance than disc openers whereas disc openers are likely to cause residue hairpinning. Winged tine openers reduce residue interference with seed placement and support greater lateral seed spread. Inverted-T openers can achieve subsurface soil shattering, which helps conserve moisture and provides good seed–soil contact. A tine opener with concave cutting edge reduces soil disturbance relative to straight and convex cutting edges. Increasing rake angle, tine width and operating depth increase degree of soil disturbance and draught requirement. Increasing forward speed reduces residue interference with sowing but might decrease the accuracy and uniformity of depth and separation of seed and fertiliser placement. Relative to common openers, bentleg openers have lower draught and penetration force requirements while combining minimal lateral soil throw with high furrow backfill, even at speeds of up to 16 km h–1. The performance of bentleg openers need to be evaluated under residue conditions and in cohesive and adhesive soils. Recommendations for future research are presented.

DETERMINATION AERODYNAMIC CHARACTERISTICS OF ELEMENTS OF BUILDING VENTILATION SYSTEMS IN LABORATORY CONDITIONS

2021 ◽  
Vol 3 (1) ◽  
pp. 049-053
Author(s):  
M. A. KRIVOSHEIN ◽  
◽  
K. D. SMIRNOV ◽  
K. V. MESHKO ◽  
◽  
...  
Keyword(s):  
Natural Ventilation ◽  
Check Valve ◽  
Aerodynamic Characteristics ◽  
Laboratory Conditions ◽  
Building Ventilation ◽  
Ventilation Systems

The article presents the layout and appearance of the stand, developed to determine the aerodynamic characteristics of the elements of ventilation systems. The technique of determining the aerodynamic characteristics of ventilation elements using the developed stand is considered. The results of tests of a check valve used in natural ventilation systems of buildings are presented. The obtained characteristic of the check valve is proposed to be used in calculating and predicting the operation of ventilation systems in buildings in which the check valves under consideration will be installed

Symmetrical Ball Check-Valve Based Rotation-Sensitive Pump

2013 ◽  
Vol 135 (11) ◽  
Author(s):  
Fábio A. Rahal ◽  
Cyro Ketzer Saul
Keyword(s):  
Check Valve ◽  
Laser Machining ◽  
Driving Voltage ◽  
Proof Of Concept ◽  
Flow Rates ◽  
Membrane Pump ◽  
Valve System ◽  
Wide Range ◽  
Electromagnetically Actuated ◽  
Simple Rotation

In this work an electromagnetically actuated membrane pump, which allows flow reversion with a simple rotation of its valve system, is presented as a proof of concept. The valve system combines two symmetrical ball check-valves (SBCV), fabricated using laser machining techniques on PMMA (poly-methyl methacrylate) and PDMS (polydimethylsiloxane). The best efficiencies were achieved using glass balls within the SBCVs. This configuration provides flow rates from 0.2 to 6.0 ml/min with pressures up to 7 kPa. We also present a model which allows simulating the pumping behavior qualitatively, including the reversion after the rotation. The main advantages of the presented pump are wide range flow rates, low driving voltage (below 30 V), same pressure and flow rate in both direct and reverse pumping modes, and easily scalable to both bigger and smaller dimensions.

Development of an opto-electronic measurement system for planter laboratory tests

Measurement ◽  
2017 ◽  
Vol 102 ◽  
pp. 90-95 ◽  
Author(s):  
Anil Cay ◽  
Habib Kocabiyik ◽  
Bilal Karaaslan ◽  
Sahin May ◽  
Myagmarsuren Khurelbaatar
Keyword(s):  
Measurement System ◽  
Laboratory Tests ◽  
Electronic Measurement

Design, prototyping, calibration, testing and evaluation of an electronic measurement system

2017 ◽  
Author(s):  
Yan Yu ◽  
Xiaolin Zhang ◽  
Xingwei Gu ◽  
Decheng Wang ◽  
Guanghui Wang ◽  
...  
Keyword(s):  
Measurement System ◽  
Electronic Measurement ◽  
Testing And Evaluation
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