Design and Experiment of Hydraulic Scouring System of Wide-Width Lotus Root Digging Machine

In response to the problems of small working width and low operating efficiency of existing hydraulic scouring lotus root harvesters, a wide-width hydraulic scouring system was designed based on a wide-width self-propelled lotus root harvester. The main parameters of the key components were determin...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Yan Liu, Yong Zhou, Wen Lv, Haidong Huang, Guozhong Zhang, Ming Tu, Lin Huang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	lotus root harvesting machinery hydraulic scouring nozzle fluent Agriculture (General) S1-972
Acceso en línea:	https://doaj.org/article/b8f14ecf0e19491bb2c428a16b46e112
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:b8f14ecf0e19491bb2c428a16b46e112
record_format	dspace
spelling	oai:doaj.org-article:b8f14ecf0e19491bb2c428a16b46e1122021-11-25T15:59:19ZDesign and Experiment of Hydraulic Scouring System of Wide-Width Lotus Root Digging Machine10.3390/agriculture111111102077-0472https://doaj.org/article/b8f14ecf0e19491bb2c428a16b46e1122021-11-01T00:00:00Zhttps://www.mdpi.com/2077-0472/11/11/1110https://doaj.org/toc/2077-0472In response to the problems of small working width and low operating efficiency of existing hydraulic scouring lotus root harvesters, a wide-width hydraulic scouring system was designed based on a wide-width self-propelled lotus root harvester. The main parameters of the key components were determined through theoretical analysis of the water flow energy of the hydraulic scouring system pipelines. An experimental study was also carried out on the main factors affecting the working performance of this hydraulic scouring system. Through hydrodynamic simulation tests, the effect of nozzle type and constriction section structure on the turbulence intensity at the nozzle outlet and the pressure loss per unit mass of fluid between the nozzle inlet and outlet sections were compared and analysed. The test yielded conical-cylindrical nozzle geometry parameters for nozzle inlet diameter of 40 mm, shrinkage angle of 30°, nozzle outlet straight section length of 20 mm, nozzle outlet diameter of 16 mm, the nozzle had better flushing performance. Single-factor tests were carried out with nozzle outlet pressure, scouring angle and nozzle height from the mud surface as influencing factors. Based on the optimum effective scour depth, a three-factor, three-level Box–Behnken central combination design test was completed. The primary and secondary factors affecting the effective scouring depth were obtained in the following order: nozzle height from the mud surface, nozzle outlet pressure, and scouring angle. Finally, the performance test of the hydraulic scouring system was completed. Results showed that when the nozzle outlet pressure of 0.30 MPa, the scouring angle of 60° and the nozzle height from the mud surface of 0 mm, the effective scouring depth was 395 mm, the lotus root floating rate was 90% and the damage rate was 5%, which meet the requirements of lotus root harvesting operations.Yan LiuYong ZhouWen LvHaidong HuangGuozhong ZhangMing TuLin HuangMDPI AGarticlelotus rootharvesting machineryhydraulic scouringnozzlefluentAgriculture (General)S1-972ENAgriculture, Vol 11, Iss 1110, p 1110 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	lotus root harvesting machinery hydraulic scouring nozzle fluent Agriculture (General) S1-972
spellingShingle	lotus root harvesting machinery hydraulic scouring nozzle fluent Agriculture (General) S1-972 Yan Liu Yong Zhou Wen Lv Haidong Huang Guozhong Zhang Ming Tu Lin Huang Design and Experiment of Hydraulic Scouring System of Wide-Width Lotus Root Digging Machine
description	In response to the problems of small working width and low operating efficiency of existing hydraulic scouring lotus root harvesters, a wide-width hydraulic scouring system was designed based on a wide-width self-propelled lotus root harvester. The main parameters of the key components were determined through theoretical analysis of the water flow energy of the hydraulic scouring system pipelines. An experimental study was also carried out on the main factors affecting the working performance of this hydraulic scouring system. Through hydrodynamic simulation tests, the effect of nozzle type and constriction section structure on the turbulence intensity at the nozzle outlet and the pressure loss per unit mass of fluid between the nozzle inlet and outlet sections were compared and analysed. The test yielded conical-cylindrical nozzle geometry parameters for nozzle inlet diameter of 40 mm, shrinkage angle of 30°, nozzle outlet straight section length of 20 mm, nozzle outlet diameter of 16 mm, the nozzle had better flushing performance. Single-factor tests were carried out with nozzle outlet pressure, scouring angle and nozzle height from the mud surface as influencing factors. Based on the optimum effective scour depth, a three-factor, three-level Box–Behnken central combination design test was completed. The primary and secondary factors affecting the effective scouring depth were obtained in the following order: nozzle height from the mud surface, nozzle outlet pressure, and scouring angle. Finally, the performance test of the hydraulic scouring system was completed. Results showed that when the nozzle outlet pressure of 0.30 MPa, the scouring angle of 60° and the nozzle height from the mud surface of 0 mm, the effective scouring depth was 395 mm, the lotus root floating rate was 90% and the damage rate was 5%, which meet the requirements of lotus root harvesting operations.
format	article
author	Yan Liu Yong Zhou Wen Lv Haidong Huang Guozhong Zhang Ming Tu Lin Huang
author_facet	Yan Liu Yong Zhou Wen Lv Haidong Huang Guozhong Zhang Ming Tu Lin Huang
author_sort	Yan Liu
title	Design and Experiment of Hydraulic Scouring System of Wide-Width Lotus Root Digging Machine
title_short	Design and Experiment of Hydraulic Scouring System of Wide-Width Lotus Root Digging Machine
title_full	Design and Experiment of Hydraulic Scouring System of Wide-Width Lotus Root Digging Machine
title_fullStr	Design and Experiment of Hydraulic Scouring System of Wide-Width Lotus Root Digging Machine
title_full_unstemmed	Design and Experiment of Hydraulic Scouring System of Wide-Width Lotus Root Digging Machine
title_sort	design and experiment of hydraulic scouring system of wide-width lotus root digging machine
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b8f14ecf0e19491bb2c428a16b46e112
work_keys_str_mv	AT yanliu designandexperimentofhydraulicscouringsystemofwidewidthlotusrootdiggingmachine AT yongzhou designandexperimentofhydraulicscouringsystemofwidewidthlotusrootdiggingmachine AT wenlv designandexperimentofhydraulicscouringsystemofwidewidthlotusrootdiggingmachine AT haidonghuang designandexperimentofhydraulicscouringsystemofwidewidthlotusrootdiggingmachine AT guozhongzhang designandexperimentofhydraulicscouringsystemofwidewidthlotusrootdiggingmachine AT mingtu designandexperimentofhydraulicscouringsystemofwidewidthlotusrootdiggingmachine AT linhuang designandexperimentofhydraulicscouringsystemofwidewidthlotusrootdiggingmachine
_version_	1718413403015348224

Design and Experiment of Hydraulic Scouring System of Wide-Width Lotus Root Digging Machine

Ejemplares similares