Volute baffle tongue and double-volute pump

Abstract

The invention relates to a volute baffle tongue and a double-volute pump. The volute baffle tongue comprises two parallel crescent-shaped side plates, and a baffle tongue body vertically arranged between the two side plates; the side plates and the baffle tongue body are integrally formed; the baffle tongue body comprises an arc-shaped head and an arc-shaped tail, the head is lower than the uppersurfaces of the two side plates, and the upper surface of the tail and the upper surfaces of the side plates are connected and are the same in radian; an inserted-connection head is arranged at the end, away from the head, of the tail; and the volute baffle tongue body is detachably mounted at the top end of the an inner layer volute and in inserted connection with the inner wall of an outer layervolute. Compared with the prior art, after being abraded during certain operation, the volute baffle tongue only needs to be replaced with a new baffle tongue; it is ensured that the pump always operates efficiently, safely and reliably; in addition, the service life of the main part, namely a pump shell, can be prolonged; and the maintenance cost for replacement of easily damaged parts and the operating expenses are saved, and quite obvious economic benefits can be obtained in the long run.

Description

technical field [0001] The invention relates to a volute pump, in particular to a volute diaphragm and a double volute pump. Background technique [0002] The double volute pump has been widely used in the working condition of conveying slurry, the pump runs stably and has high efficiency. However, due to the great impact of the slurry medium on the erosion and abrasion of the flow-passing parts of the pump, generally the abrasion at the blade inlet and the volute tongue of the pump casing is particularly serious, which will cause the pump's operating performance to be unstable or decline, and vibration and the noise increases accordingly. For slurry pumps with high head and large flow, the absolute speed of the outlet of the outer diameter of the impeller is relatively large, and the wear on the diaphragm is more serious. When the diaphragm wears to a certain extent, the risk of damage to other aspects of the equipment will also increase, so new worn parts such as impelle...

AI Technical Summary

Problems solved by technology

When the diaphragm wears to a certain extent, the risk of damage to other aspects of the equipment will also increase, so new worn parts such as impellers and pump casings have to be replaced. The impellers are relatively small and can be replaced with new ones; but For the pump casing, if the entire pump casing is replaced due to the wear of the pump casing partition tongue, the maintenance cycle will be long, the cost will be too high, and the economy will be poor. The feasibility of this scheme is poor.

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