Adjustable impeller mechanism

Abstract

The invention relates to an adjustable impeller mechanism which comprises an impeller body, an adjusting rotary plate and a plurality of adjusting blades. The impeller body comprises an impeller cover plate and body blades, the body blades are evenly and annularly distributed in the radial direction of the impeller cover plate, a plurality of first guide grooves are formed in the impeller cover plate, second guide grooves are evenly distributed in the adjusting rotary plate and are curve grooves, and each adjusting blade comprises a blade plate, a guide rod and a limiting block. One ends of the blade plates are embedded into the body blades to form extension of the body blades, one ends of the guide rods are connected with the bottom sides of the blade plates, and the other ends of the guide rods sequentially penetrate through the first guide grooves and the second guide grooves to be connected with the limiting blocks. Compared with the prior art, adjustment is carried out through a mechanical structure, the outer circle diameters of the blades can be conveniently and rapidly changed, the change can be repeated for multiple times, the outer diameters of the blades are increased or reduced, other parts cannot be damaged, operation is easy, and adaptability is wider.

Description

technical field [0001] The invention relates to the field of fluid machinery, in particular to an adjustable impeller mechanism. Background technique [0002] In rotating machinery such as vane pumps and water turbines, the impeller is the most important working element. According to the theoretical knowledge of the water pump, the outer diameter D of the blade in the impeller 2 It is a very important geometric parameter in the use of water pumps. The head H of the water pump and the diameter of the outer circle D 2 There is the following relation: H∝D 2 2 . Since the method of cutting the outer diameter of the blade is the most economical and practical method in practice (the impeller is mass-produced and generally not customized), so in practical applications, it is often necessary to cut the outer diameter of the blade by D 2 To adapt to the working conditions of pumps with different performances. The specific steps for cutting the outer diameter of the blade are: r...

AI Technical Summary

Problems solved by technology

[0003] In summary, it can be seen that the cutting blade outer diameter D 2 There are the following problems: 1. The actual steps are very cumbersome, the operation process is complicated, and the impeller structure may even be damaged during the cutting process

2. The cutting accuracy is difficult to grasp, and repeated assembly tests are required, which increases the difficulty of operation

3. The overall operation is irreversible. Once the calculation operation is wrong, the entire impeller will be scrapped, resulting in waste

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