The quantitative pump is a kind of pump device that can keep the theoretical displacement per revolution when it works. Its use makes the melting of the magnesium alloy and the heat preservation furnace work more efficiently. So how the dosing pump works? It? Quantitative pump working principle Under the conditions of constant speed, the output flow variable variable pump, on the contrary for the quantitative pump. Their biggest difference is that the shaft of the variable displacement pump is mounted eccentrically. In simple terms, the pump's speed can not be adjusted. Variable pump output flow can be based on the system pressure changes, automatically adjust the flow, that is, when the pressure is high, the output flow is small, low pressure output flow. So he can save the number of hydraulic components, thus simplifying the oil system, and can reduce the oil heat. The disadvantage is that the flow pulsation is serious, the system pressure is not stable, the pump's life is short, the pump bearing is easy to damage, because he is eccentric installation, and the pump noise. Vane pump by adjusting the eccentricity, the plunger pump by adjusting the angle of the slider can achieve the variable. Quantitative pump work before and after the use of diaphragm action between the diaphragm and the pump head caused by changes in the ball valve up and down the formation of vacuum adsorption and push phenomenon to achieve the purpose of liquid delivery. When the diaphragm is pulled backwards, the outlet ball valve falls tightly close to the ball seat, and the inlet ball valve rises upward due to the vacuum generated between the inlet valve and the pump head and the liquid is sucked up. When the diaphragm is pushed forward, the inlet ball valve is airtight with the ball seat so that the liquid will not pass, and the outlet is pushed forward by the diaphragm to open the ball valve to discharge the liquid. Through the above introduction, we can initially understand the working principle of quantitative pumps, with the magnesium alloy die-casting business continues to expand, the demand for quantitative pumps are also increasing, to speed up the understanding of quantitative pump products such as users of such applications The product has a very positive effect.
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