News

  • Matters needing attention of Submersible sewage pump

    1. Before use: 1).Check whether there is oil in the oil chamber. 2). Check whether the plug and sealing gasket on the oil chamber are complete. Check whether the plug has tightened the sealing gasket. 3).Check whether the impeller rotates flexibly. 4). Check whether the...
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  • Introduction to common pump terms (6) – Pump cavitation theory

    Introduction to common pump terms (6) – Pump cavitation theory

    Cavitation of Pump: Theory and Calculation Overview of cavitation phenomenon The pressure of liquid vaporization is the vaporization pressure of liquid (saturated vapor pressure). The vaporization pressure of liquid is related to temperature. The higher the temperature...
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  • Introduction to common pump terms (5) – Pump impeller cutting law

    Introduction to common pump terms (5) – Pump impeller cutting law

    Fourth section Variable-diameter operation of vane pump Variable-diameter operation means cutting off part of the original impeller of vane pump on lathe along the outer diameter. After the impeller is cut, the performance of the pump will change according to certain rul...
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  • Introduction to common pump terms (4) – Pump similarity

    law Application of similarity theory of pump 1. When the similar law is applied to the same vane pump running at different speeds, it can be obtained: •Q1/Q2=n1/n2 •H1/H2=(n1/n2)2 •P1/P2=(n1/n2)3 •NPSH1/NPSH2=(n1/n2)2 Example: Existing a pump, the model is SLW50-200B, we need change SLW50-...
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  • Introduction to common pump terms (3) – specific speed

    Specific Speed 1. Specific speed definition The specific speed of water pump is abbreviated as specific speed, which is usually represented by the symbol ns. The specific speed and the rotational speed are two completely different concepts. The specific speed is a comprehensive data calculated ...
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  • Introduction to common pump terms (2) – efficiency + motor

    power speed 1. Effective Power: Also known as output power. It refers to the energy obtained by the liquid flowing through the water pump in a unit time from the water pump . Pe=ρ G Q H/1000 (KW) ρ——Density of liquid delivered by pump(kg/m3) γ——Weight of liquid delivered by pump(N/m3)   ...
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  • Introduction to common pump terms (1) – flow rate + examples

    1.Flow–Refers to the volume or weight of the liquid delivered by the water pump per unit time.Expressed by Q, the commonly used units of measurement are m3/h, m3/s or L/s, t/h. 2.Head–It refers to the increased energy of transporting water with unit gravity from the inlet to the outle...
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  • HGL/HGW series single-stage vertical and horizontal chemical pumps

    HGL and HGW series single-stage vertical and single-stage horizontal chemical pumps are based on the original chemical pumps of our company. We fully consider the particularity of the structural requirements of chemical pumps during use, draw on advanced structural exper...
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  • What is the difference between a gas fuel pump and a diesel fuel pump?

    One of the most critical components for a car engine is the fuel pump. The fuel pump is responsible for delivering fuel from the fuel tank to the engine to ensure smooth operation of the vehicle. However, it is worth noting that there are different types of fuel pumps for gasoline and diesel engi...
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