Virtual Design and Structural Optimization of Dry Twin Screw Vacuum Pump with a New Rotor Profile

Zhang, Shi Wei; Zhang, Zhi Jun; Xu, C.

doi:10.4028/www.scientific.net/amm.16-19.1392

Cited by 7 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where i ¼ ' 2 =' 1 is the ratio of the screw, 1 and 2 are the helical angle of the main screw and the follower screw, respectively (see equations (12) and ( 13)).…”

Section: Contact Linementioning

confidence: 99%

“…Hsieh et al 11 proposed a new claw-style tooth profile to tackle the sealing issue between two meshing screws. Zhang et al 12 investigated multitooth profiles that combined epicycloids, arc and involute of screw, based on which a twin-screw vacuum pump was designed. Litvin and Feng 13 developed an approach to the synthesis of rotor surfaces with two lines of contact, and studied the influence of misalignment on the backlash between the surfaces.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Screw optimization for performance enhancement of a twin-screw pump

Tang

Zhang

2013

Proceedings of the Institution of Mechanical Engineers, Part E:

View full text Add to dashboard Cite

The performance of twin-screw pumps that are widely used in industry hinges upon a number of factors. In this research, a systematic approach is presented, encompassing the design optimization of a Type-A screw and the subsequent performance evaluation of a twin-screw pump. We first investigate the effect of involute meshing angle on the contact line properties of the Type-A screw, and carry out design optimization. We then formulate a flow field analysis of the twin-screw pump using the screw tooth profiles and spiral surfaces under the optimal involute angles obtained, and analyze the pressure field, velocity field and other characteristics of the pump. The influence of contact line on the pump sealing property is also assessed. Concurrent with the numerical study, experimental investigation is performed to evaluate the rotating speed and power of the pump, as well as their intrinsic relations with the flow, pressure and power of the screws. These studies reveal that under the optimal design of the screw, the pump performance can be significantly improved. The methodology of design and analysis outlined in this research can be applied to other screw pumps, and the results of parametric analysis involved can shed lights on the development of screw pumps in general.

show abstract

“…where i ¼ ' 2 =' 1 is the ratio of the screw, 1 and 2 are the helical angle of the main screw and the follower screw, respectively (see equations (12) and ( 13)).…”

Section: Contact Linementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Screw optimization for performance enhancement of a twin-screw pump

Tang

Zhang

2013

Proceedings of the Institution of Mechanical Engineers, Part E:

View full text Add to dashboard Cite

show abstract

“…Yan jia and team [17] enhanced the involute rotor impeller profile using the deviation function (DF) approach, resulting in superior sealing capabilities and efficiency. Zhang L and his collaborators [18] put forward an optimized design strategy for conical rotor profiles, allowing for adjustable flow field gaps. However, most of studies were applicable…”

mentioning

confidence: 99%

Dynamic mesh simulation flow field and micro-filling experiment analysis of viscous medium transported by two- lobe rotary pump

Enlong,

Runqi,

Bowen

et al. 2024

Preprint

View full text Add to dashboard Cite

The current study aimed to explore the conveyance properties exhibited by the rotary lobe pump.To simulate the flow field of a two-lobe rotary pump, the K-ε turbulence model was employed in conjunction with the dynamic mesh technique, and the micro-filling accuracy of pure water and syrup with different viscosity were tested by servo control technique. 3D model of the two-lobe rotary pump was established by CREO, 2D model was meshed by ICEM, and the area near the rotor was meshed encrypted. The effects of medium viscosity on outlet flow characteristics, volumetric efficiency and medium viscosity on pump efficiency and micro-filling accuracy at low rotating speed were discussed. The results show that when the rotor speed is at 25.58 rpm, the flow pulsation is minimal; And the outlet flow rate is increased by 0.533kg/s when the rotor speed increased by 10 rpm. For fluids with low viscosity (ranging from 1 to 100cP), there is a notable increase in volumetric efficiency as the rotational speed rises. Conversely, the volumetric efficiency of medium-viscosity and high-viscosity fluids (spanning 250 to 850cP) is relatively insensitive to changes in rotor speed; When the inlet pressure is increased by 1kPa, the flow rate is increased by 0.127kg/s. In the viscosity range of 1cP-250cP, the flow non-uniformity coefficient decreases continuously, and when the viscosity reaches 450cP, the flow non-uniformity coefficient is almost not affected by the medium viscosity. According to the numerical simulation results, rotor lobe pump is used to carry out the micro-filling accuracy experiment. When filling 25g syrup, the optimal precision could be controlled within 0.6g, and when filling 500ml pure water, the precision could be controlled within 1.2ml. Therefore, the rotor lobe pump driven by servo motor is suitable for the micro-filling requirements of the milk tea industry.

show abstract

Experimental Study of Oil‐Free Claw Vacuum Pump Characteristics

Raykov¹,

Salikeev²,

Бурмистров³

et al. 2016

Vak Forsch Prax

View full text Add to dashboard Cite

Experimental study of pumping characteristics of a pilot model of a claw single‐stage vacuum pump with identical rotors was carried out. The curves of pumping speed vs. pressure at different rotary speed and the ultimate pressure at different rotors speed were determined on a test unit. Indicator pressure diagrams in working chambers of claw vacuum pump were obtained with the help of special sensors. Thus, an experimental data bank concerning the pumping characteristics of claw vacuum pump was created. It may be used for estimation of mathematical model adequacy and further development of the pump design.

show abstract

Virtual Design and Structural Optimization of Dry Twin Screw Vacuum Pump with a New Rotor Profile

Cited by 7 publications

References 4 publications

Screw optimization for performance enhancement of a twin-screw pump

Screw optimization for performance enhancement of a twin-screw pump

Dynamic mesh simulation flow field and micro-filling experiment analysis of viscous medium transported by two- lobe rotary pump

Experimental Study of Oil‐Free Claw Vacuum Pump Characteristics

Contact Info

Product

Resources

About