Centrifugal-type modularized volute

Abstract

The invention relates to a centrifugal-type modularized volute composed by a volute body and a volute tongue module. The volute body comprises a volute plate, a front lateral plate and a back lateral plate, wherein the front lateral plate and the back lateral plate are connected through the volute plate. The centrifugal-type modularized volute is characterized in that the volute tongue module is installed on the volute tongue installation surface of the volute plate and is connected with the volute plate in a detachable mode. Due to the adoption of the modularized volute, the centrifugal-type modularized volute breaks the condition that a traditional normal volute is fixed in structure and single in performance feature and the modularized design and assembly of the volute are achieved. By assembling various volute tongue modules on the volute body, compared with the normal volute with a traditional structure, centrifugal-type modularized volute can improve the entire efficiency of a device more flexibly or reduce the noise, so that the assembly of a centrifugal-type fluid device can be more flexible and pointed. Compared with the prior art, the device of the same model has different performance features such as low noise or high efficiency, so that different practical requirements of users can be met.

Description

technical field [0001] The invention relates to a centrifugal fluid machine, in particular to a centrifugal volute suitable for a liquid pump or a gas blower. Background technique [0002] There is often a "tongue" structure near the outlet of the volute of centrifugal fluid machinery, called the volute tongue. Conventional centrifugal volute, volute tongue and volute plate 2 as a whole ( figure 1 ), that is, the volute tongue module 1 is a fixed volute tongue. During the research, test and use, it was found that when the volute profile of the centrifugal fluid equipment is determined, the gap between the volute tongue and the impeller, the radius of the volute tongue, and the structure of the volute tongue have a strong reaction to the flow between the impellers. It directly affects the flow conditions inside the equipment and the distribution of pressure pulsations, and plays an important role in the vibration, noise and overall efficiency of the equipment. Studies have...

AI Technical Summary

Problems solved by technology

Studies have shown that some types of volute tongues can improve the efficiency of centrifugal fluid machinery, but they are not good at controlling vibration and noise.

While some types of volute tongue can reduce the noise of centrifugal fluid machinery, but it will have a negative impact on the overall efficiency

This has caused troubles to the use of centrifugal fluid equipment, because the structure of the volute including the volute tongue is uniquely determined for the same type of equipment that has been designed and finalized, but it is often faced with such a situation: some places require this type The equipment has high efficiency and does not have high requirements for vibration and noise; while other places have relatively high requirements for vibration and noise, and do not pay much attention to efficiency

[0003] According to the document of Chinese patent ZL00115736, a volute with a stepped volute tongue is provided, which has a certain effect on suppressing noise, but its effect is limited to improving noise, and the total performance is relatively simple, and once the volute is manufactured, cannot be changed

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