Integral propeller for submersible water impeller

Abstract

The invention discloses an integral propeller for a submersible water impeller. The integral propeller is great in utilization effect, long in service life and convenient and quick in mounting and demounting and comprises a hub, blades, a shaft hole and a metal insert. The blades are connected with the outer periphery of the hub, the middle of the hub is provided with the shaft hole, and the metal insert is arranged between the hub and the blades. The hub and the blades are made from glass reinforced plastic materials by integral pressure casting, an inlet side of each blade is axially inclined forwards while an outlet side of each blade is axially inclined forwards from the hub to a gravity center line of the corresponding blade, and each blade is axially swept back from the gravity center line of the corresponding blade to a maximum-external-diameter position. The front end face of the hub is drum shaped while the rear end face of the hub is round, the hub is conical integrally, a planar projection of each blade is in a banana shape, and a wrap angle range is 130-160 degrees. The integral propeller is applicable to the submersible water impeller.

Description

technical field [0001] The invention relates to a submersible flow pusher, in particular to an integral propeller used in the submersible flow pusher. Background technique [0002] The submersible pusher is widely used in the oxidation ditch of the sewage treatment plant. The low-tangential open strong water flow generated by it can be used in the sewage circulation in the pool and the creation of water flow in the nitrification, denitrification and phosphorus removal stages of sewage. The key core equipment of sewage biochemical treatment process. [0003] The traditional submersible pusher is generally composed of four parts: propeller, deceleration device, submersible motor, and sliding sleeve. Among them, the propeller is the core component, which directly affects the performance and reliability of the product. At present, the propellers of related manufacturers of submersible flow machines at home and abroad are generally made of metal (including casting, welding, riv...

AI Technical Summary

Problems solved by technology

[0004] 1. Poor performance, mainly manifested in low propeller efficiency, small thrust, and small service area

[0005] 2. The propeller is bulky, the moment of inertia is large, and the reduction device and submersible motor are easily damaged

[0006] 3. The symmetry and balance of the propeller blades are poor, the vibration is large and the noise is high during operation

[0007] 3. The strength of the propeller blade is low, and the root of the blade is easily broken and damaged

[0008] 4. The propeller blades are easily entangled by dirt, causing overload and damage to the submersible motor

[0009] 5. It is inconvenient to assemble and disassemble the propeller, and the maintenance cost is high

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