Closed impeller provided with twisted blades and applicable to water pump and machining technology of closed impeller

A technology of twisted blades and closed impellers, which is applied in the field of twisted blades closed impellers of water pumps and its processing technology, can solve the problems of shortening the manufacturing cycle of closed impellers, reducing the vibration of closed impellers, and difficult processing, so as to improve reliability And hydraulic performance, shorten the manufacturing cycle, the effect of high structural consistency
CN109909692AInactive Publication Date: 2019-06-21SHANGHAI MICROPOWERS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI MICROPOWERS
Publication Date
2019-06-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a closed impeller provided with twisted blades and applicable to a water pump and a machining technology of the closed impeller. The impeller comprises single twisted blades; aplurality of single twisted blades are assembled sequentially to form the closed impeller; each single twisted blade is formed through overall milling by the aid of a five-axis CNC machine tool; assembled positions of every two adjacent single twisted blades are connected through welding and form welding lines; and the number of the welding lines is equal to that of the single twisted blades of the closed impeller. According to the impeller and the technology, the manufacturing accuracy, the surface smoothness and the weight uniformity of the closed impeller are substantially improved, the manufacturing cycle of the closed impeller is substantially shortened, the problems of large machining difficulty and the like of the overall large-distortion and multi-blade milling technology are solved, meanwhile, the structural reliability and the hydraulic performance of the closed impeller are improved, and vibration of the closed impeller is reduced.
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Description

technical field

[0001] The invention relates to the technical field of pump impeller manufacturing technology, in particular to a closed impeller with twisted blades of a water pump and its processing technology. Background technique

[0002] At present, several common water pump impeller processing technologies are:

[0003] 1) Traditional open mold casting: At present, low-vibration noise and high-efficiency blades are usually designed by increasing the number of blades and distorting blades. It is often difficult to achieve impellers with large blade space distortion and a large number of blades by using traditional open mold casting methods, and the cost of casting impellers is high. , Long production cycle, low precision, rough surface, low precision and poor consistency of impeller produced by mold casting, not suitable for precision manufacturing of impeller, let alone low-vibration, noise and high-efficiency impeller water pump production;

[0004] 2) Stamping + riv...

Claims

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