HW mixed-flow pump series pumps are suitable for conveying clear water, pulp with a concentration of no more than 3% or solutions with a pH of 3~10 and a fiber length of less than 80mm, and other liquids with physical and chemical properties similar to water. The temperature of the liquid to be transported should not be higher than 50°C. Widely used in agricultural drainage, industrial wastewater and urban water supply and drainage. Among them, the HW ultra-low head mixed flow pump has low head, large flow, low energy consumption and high efficiency, which is especially suitable for the construction and renovation of pumping stations in low head areas.
1. HW type pump is mainly composed of main parts such as pump cover, impeller, pump body, pump shaft, shaft sleeve and bearing body.
2. The pump cover is connected with the pump body and the water inlet pipe respectively. There should be a proper gap between the pump cover plane and the impeller plane. If the gap is too small, friction will occur; if the gap is too large, a large amount of pressure water in the pump body will flow back, reducing the efficiency of the pump. The suitable gap for actual use is 0.3-0.7mm (push the pump shaft to the inlet end of the pump), and the gap can be adjusted by increasing or decreasing the thickness of the paper pad.
3. The shaft seal device is composed of packing, packing gland, packing ring and packing ring on the pump body. Its function is to prevent air from being sucked into the pump and prevent water from flowing too much along the shaft from the pump.
4. The shaft sleeve is used to protect the pump shaft. It can be replaced in time after wear and tear.
5. The pump shaft is supported by single row radial ball bearings. Bearings can be lubricated with lubricating oil - the amount of oil should be controlled between the marking lines of the oil gauge; it can also be lubricated with grease - it can be added when assembling the water pump. During use, it can be supplemented by disassembling the front cover and the rear cover.
6. The screw hole on the upper end of the pump body is used for filling and diverting water or connecting with a vacuum pump for pumping air and diverting water.
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