[Pump News Asia] slurry pump (also known as vortex pump) is a vane pump, in our daily life is a common pump, then you know what the performance characteristics of the slurry pump? The following is a description of slurry pump performance characteristics. Slurry pump performance characteristics 1. Higher H 2 can be obtained in the small Q range. The steep drop of the H-Q curve and the landing of P-Q curve Q = 0 pump, the flow channel u is zero, throwing liquid and liquid flow in the channel between the centrifugal force of the largest submersible pump, the strongest vertical vortex. The pump head is also the largest. With the increase of Q, the flow channel u increases, the longitudinal vortices become weaker, and H falls quickly. Due to the steep drop of the H characteristics, when the work of H change, Q change is small; Q increase due to the rapid decrease of H, metering pump. Power curve also showed a downward trend. Discharge valve should be opened at start-up, it is not advisable to adopt throttling regulation, and to use reflux regulation to be more economical and water pump. 3. Less effective due to liquid multiple times out of the impeller there is a big impact loss, closed-loop pump efficiency of 35% to 45% at design conditions, open vortex pump 20% to 35%. 4. Self-priming ZBJ type slurry pump has self-priming ability, can realize mixed transport of gas and liquid, suitable for pumping gas containing and volatile liquid and Pv high temperature liquid. FLX-type slurry circulation pump outlet gas-liquid equipment can also be achieved self-absorption, but before the pump must be filled with liquid pump. 5. Poor cavitation performance. When the flow enters the blade, the angle of attack is large, the flow is disorderly, and the velocity is unevenly distributed. In particular, the closed pump has a large cavitation erosion due to its large entrance. 6. The impeller is subjected to radial force and axial force increasing from suction to discharge pressure circumferentially. The self-priming pump acts perpendicularly to the axial section passing through the tongue and points to the low pressure side. Cross-section bilateral symmetrical pump, magnetic pump. Axial force does not occur in theory, if the end gap ranging from the axial force may be generated in the impeller to open the balance hole to cancel fire pump. Slurry pump with one side flow path, different pressure at both ends of the impeller, axial force pointing in the direction of flow channel, small-size pump can be used with thrust bearing, available hydraulic active balancing method. 7. Should not be solid particles conveyor belt or stick too large liquid solid particles will seal the gap quickly grinding, ηv declining rapidly, the original vortex pump ηh low, excessive sticky excessive hydraulic loss. Generally sent the viscosity of liquid more than 37mm2 / s. 8. Slurry pump slurry pump other features simple structure, light weight, small size, production and maintenance convenience. Used as a corrosion-resistant pump, the impeller, pump body can be made of stainless steel, plastic or nylon can also be molded. In summary: practical small Q, high H, power and need to self-priming places. Commonly used to help boiler or pressure tank water pump, small and medium-sized diesel engine cooling water pump, gas barge pump. Further reading: Motor IFAT China's top ten brands Guangzhou Exhibition building water pump manufacturers ranking ptc Show article belongs to Internet industry (Xiamen) Co., Ltd. All are welcome to reprint, please indicate the source and author of: Asian pumps Network Editor : Lindj (QQ / WeChat:) Starting: http://beng.liuti.cn/ (Service Hotline:)
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