Novel vertical mixed flow pump

Abstract

The invention discloses a novel vertical mixed flow pump. The novel vertical mixed flow pump comprises a guide vane body and a rubber bearing. The guide vane body comprises an upper stop opening. Therubber bearing comprises a flange in lap joint to the upper stop opening, conical holes are reamed in the upper stop opening and the flange, and fastening devices are arranged between the upper stop opening and the flange. Each fastening device comprises a double-end bolt, a conical sleeve mounted on the double-end bolt and a fastening assembly. The conical sleeves cooperate with the conical holes, one ends of the double-end bolts are fixed into the upper stop opening, the other ends of the double-end bolts are connected with the fastening assemblies, and the fastening assemblies abut againstthe conical sleeves and tightly cooperate into the conical holes. The upper stop opening and the rubber bearing are connected through the fastening assemblies, the conical sleeves and the double-end bolts, it is guaranteed that the rubber bearing cannot swing in the operating process of the water pump, the impact load effect is reduced, and the service life is prolonged.

Description

technical field [0001] The invention relates to a water pump, in particular to a novel vertical mixed-flow pump. Background technique [0002] As an important part of water conservancy projects, large and medium-sized pumping stations play a huge role in flood control, water transfer irrigation, urban water supply and regional water transfer. The core equipment of the pump station, the water pump, transmits the mechanical energy of the prime mover or other external energy to the liquid, so that the energy of the liquid is increased, and the low water level liquid is transported to the high water level. Water-lubricated rubber guide bearings are widely used in large and medium-sized vertical water pumps due to their simple structure and convenient maintenance. Usually, such as Figure 4 Shown is the existing guide vane body and rubber bearing installation structure. The guide vane body 100 is composed of an inner cylinder 101, an outer cylinder (not shown) and a guide vane (...

AI Technical Summary

Problems solved by technology

After that, the radial force mainly depends on the transmission between the upper and lower seam of the guide vane body and the rubber bearing. Because it is a clearance fit, under the long-term impact load, the upper and lower seam of the guide vane body will be damaged, which will cause the water pump to rub against the casing. , and even have serious consequences such as blade breakage

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