scholarly journals MILKING EQUIPMENT VACUUM PUMPS AND THEIR IMPACT ON ENVIRONMENT

2001 ◽  
Vol 1 ◽  
pp. 148
Author(s):  
Juris Priekulis ◽  
Andris Belovs
Keyword(s):  
Vacuum Pump ◽  
Wear Resistant ◽  
Ring Type ◽  
Operational Costs ◽  
Recirculation System ◽  
Water Ring ◽  
Working Liquid

The aim of the research was to compare different milking equipment vacuum pumps purchased in Latvia according to their influence on the environment and profitability. Information on vacuum pumps available in Latvia is summarised and their classification is elaborated in the investigation. The amount of the working liquid discharged from the vacuum pumps during their operation is experimentally determined. It is stated that for the new lubricated vacuum pumps with oil recirculation system and the pumps with the oil screen the discharge of oil is reduced 60-199 times and it does not essentially influence the environment. The vacuum pumps with lead in their blades produced in Rezekne are also experimentally investigated. It is stated that they are sufficiently wear resistant and they are suitable for operation in mobile milking machines. Vacuum pumps with capacity 800-1000 l/min are compared according to their operational costs. It is stated that the water ring type vacuum pumps produced in Estonia have the lowest costs but the lubricated vacuum pump UVU 45/60 produced in Russian has the highest costs.

Material Selection of Water-Ring Vacuum Pump in Yellow Phosphorus Tail Gas Industry

2013 ◽  
Vol 690-693 ◽  
pp. 1520-1523
Author(s):  
Hong Mei Yu
Keyword(s):  
Production Process ◽  
Material Selection ◽  
Medium Composition ◽  
Vacuum Pump ◽  
Point Of View ◽  
Gas Industry ◽  
Yellow Phosphorus ◽  
Gas System ◽  
Water Ring ◽  
Selection Of

Material selection of water-ring vacuum pumps in the chemical industry is closely related to the suction gas medium composition. Using the case of 70,000 tons of sodium yellow phosphorus tail gas system of water-ring vacuum pump in Guizhou Kaiyang Qingli tianmeng Chemical Ltd. (hereafter abbreviation as Tianmeng Company), this paper introduces vacuum pump in the production process of yellow phosphorus tail gas, according to the characteristics of corrosion in acidic media on flow passage component, and analyze the factors influencing the selection of materials from the point of view of the production process of yellow phosphorus tail gas.

scholarly journals The Water Ring Vacuum Pump with Air Ejector

Shinku ◽  
1964 ◽  
Vol 7 (10) ◽  
pp. 344-347
Author(s):  
Norimasa NASU
Keyword(s):  
Vacuum Pump ◽  
Air Ejector ◽  
Water Ring

scholarly journals Two stage ejector as a pre-stage of the water ring vacuum pump

2019 ◽  
Vol 20 (7) ◽  
pp. 703
Author(s):  
Róbert Olšiak ◽  
Marek Mlkvik ◽  
František Ridzoň ◽  
Pavol Slovák
Keyword(s):  
Experimental Studies ◽  
Vacuum Pump ◽  
3D Printer ◽  
Cfd Analysis ◽  
Suction Pressure ◽  
Governing Equations ◽  
Flow Through ◽  
Definition Of ◽  
Water Ring ◽  
Liquid Ring

A supersonic gas ejector in conjunction with a liquid ring vacuum pump is used for creating and maintaining a vacuum in a chamber for technological purposes. In this paper, the authors submit an overview of the problematics of suction pressure reduction with a supersonic gas ejector used as a pre-stage of a liquid ring vacuum pump. This system has also the function of a cavitation protection due to the higher pressure present at the suction throat of the vacuum pump. A part of this paper is devoted to the governing equations used at the definition of the flow through an ejector. The CFD analysis of the problem was implemented with the package Fluent in 2 dimensions using the axisymmetric approach. The parts of the physical model were printed on a STRATASYS 3D printer, or were cast from technical resin. The experimental studies are then carried out in our own laboratory for validation purposes.

STAGES OF VACUUM FISH-PUMP UNIT OPERATION

Fisheries ◽  
2020 ◽  
Vol 2020 (2) ◽  
pp. 108-112 ◽  
Author(s):  
Vladimir Naumov ◽  
Nikolay Velikanov
Keyword(s):  
Numerical Method ◽  
Vacuum Pump ◽  
Unit Operation ◽  
Working Capacity ◽  
Pump Unit ◽  
Time Intervals ◽  
Pump Operation ◽  
Water Fish ◽  
Pressure Changes ◽  
Water Ring

The article describes the features of modeling the stages of pumping a water- fish mixture using a water-ring vacuum pump. The dynamics of pressure changes in the working capacity during pump operation for different time intervals is considered. Solutions of the corresponding differential equations are obtained using the numerical method. The results of calculating the characteristics of the process of pumping the water- fish mixture into the receiving container are presented.

CHARACTERISTICS OF WATER RING COMPRESSOR MACHINES VACUUM FISH PUMPING UNITS

Fisheries ◽  
2021 ◽  
Vol 2021 (1) ◽  
pp. 94-98
Author(s):  
Vladimir Naumov ◽  
Nikolay Velikanov
Keyword(s):  
Experimental Data ◽  
Power Consumption ◽  
Least Squares Method ◽  
Vacuum Pump ◽  
Rotor Speed ◽  
Pump Mode ◽  
Working Chamber ◽  
Pumping Units ◽  
Water Ring ◽  
Empirical Constants

The operation of the Samson KS910 pump under various conditions is investigated. The values of empirical constants in mathematical dependencies for calculating pump characteristics were found using the least squares method based on published experimental data. The results of calculating the productivity and power consumption of the Samson KS910 in the vacuum pump mode depending on the pressure in the working chamber at different values of the rotor speed and pressure in the working chamber are presented.

Two Phase Flow Simulation of Water Ring Vacuum Pump Using VOF Model

2015 ◽  
Author(s):  
Hui Ding ◽  
Yu Jiang ◽  
Hao Wu ◽  
Jian Wang
Keyword(s):  
Cfd Simulation ◽  
Two Phase Flow ◽  
Flow Simulation ◽  
Vacuum Pump ◽  
Phase Flow ◽  
Two Phase ◽  
Vof Model ◽  
Flow Field Characteristics ◽  
Simulation Results ◽  
Water Ring

Due to the complex two phase flow, CFD simulation of liquid ring pump used to be extremely challenging. Using a recently developed Volume of Fluid (VOF) two phase flow model, this paper presents a 3D transient CFD model for a water ring vacuum pump. The test simulations show that the new VOF model is very robust and can catch most of the important physics when applied to a industrial water ring vacuum pump. Model formulation and problem setup will be presented in detail in the paper. Important issues that could affect the simulation results will be discussed. Water ring pump flow field characteristics revealed from simulation results will be summarized with explanation. And finally the simulation results will be compared with experiment test data.

scholarly journals PERFORMANCE OF HIGH-POWER VACUUM FISH PUMPING UNITS

Fisheries ◽  
2020 ◽  
Vol 2020 (4) ◽  
pp. 101-105
Author(s):  
Vladimir Naumov ◽  
Nikolay Velikanov ◽  
Anton Zemlyanov
Keyword(s):  
Differential Equations ◽  
Numerical Method ◽  
High Power ◽  
Vacuum Pump ◽  
Time Intervals ◽  
Pump Operation ◽  
Water Fish ◽  
Pumping Units ◽  
Water Ring

The article describes the features of modeling the stages of pumping a waterfish mixture using a water-ring vacuum pump. The dynamics of pressure changes in reservoir during pump operation for different time intervals is considered. Solutions of the corresponding differential equations are obtained using the numerical method. The calculated characteristics of the process of water-fish mixture pumping into the receiving container are presented.

Reducing the noise level of a water-ring vacuum pump

1980 ◽  
Vol 16 (8) ◽  
pp. 471-472
Author(s):  
V. I. Pimenov ◽  
A. E. Sokolov
Keyword(s):  
Noise Level ◽  
Vacuum Pump ◽  
Water Ring

scholarly journals Suction Characteristics of Water Ring Vacuum Pump. (2nd Report, Effects of Moisture Content in Air at Suction).

1994 ◽  
Vol 60 (571) ◽  
pp. 916-919
Author(s):  
Hitoshi Shiraishi ◽  
Toshitaka Shigematsu ◽  
Nobuaki Yanagihara ◽  
Yasutoshi Senoo
Keyword(s):  
Moisture Content ◽  
Vacuum Pump ◽  
Water Ring
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