No-clogging pump with wall-attached rotating spiral impellers

Abstract

The invention belongs to the field of fluid machinery, and provides a no-clogging pump with wall-attached rotating spiral impellers. The no-clogging pump is provided with an even number of spiral impellers which are symmetrically distributed and mounted on the inner side of a body wall of a pump main body of a rotary body structure; two ends of the pump main body are connected to inner rings of supporting bearings; a driving gear or a belt wheel is arranged on the outer side of the body wall of the pump main body, so as to jointly form an overflow rotating part of a pump; outer rings of the supporting bearings at two ends of the pump main body are connected through a fixed connection piece, so as to form a pump fixed supporting part; the front half section of the pump main body is a low-pressure region of an internal flow field of the pump main body, and the rear half section of the pump main body is a high-pressure region of the internal flow field of the pump main body; a rotating direction of a pump overflow part accords with moving directions of the spiral impellers instead of reverse rotation; a main body pump through which fluid flows is not provided with any components having relative motions, so that the no-clogging pump is low in material damage rate and high in no-clogging performance, has multi-aspect properties of pump energy utilization efficiency, suction lift andraising lift, and is high in overall performance and good in application prospect.

Description

technical field [0001] The invention belongs to the field of fluid machinery, and relates to a non-clogging pump with a spiral impeller attached to the wall and without a central shaft, which is suitable for conveying various fluids, semi-fluids and solid-liquid mixtures. Background technique [0002] Non-clogging pumps are special and important pumps in the field of fluid machinery. They are used to transport various thick pulp, solid-liquid mixtures, powder materials, etc. They have a wide range of applications and are in great demand. According to its working principle, non-clogging pumps can be roughly divided into vacuum pumps, jet pumps, and centrifugal non-clogging pumps, each of which has its own advantages and disadvantages. Among them, the suction pumps of vacuum pumps and jet pumps do not have impellers or paddles, which have good non-clogging performance and high material non-damage rate, but the efficiency is low, or the suction work is discontinuous and the lif...

AI Technical Summary

Problems solved by technology

No matter how these centrifugal non-clogging pumps with central shaft impellers are designed and optimized, the rotating impellers of the central shaft will always cause certain damage and influence on the conveyed materials, because the rotating impellers are in contact with the fixed impellers. There is always relative movement between the walls of the pump body. When the material condition is not suitable, such as when the ratio of material to medium fluid is not appropriate, winding and blockage accidents are likely to occur, that is to say, there are certain natural defects in the non-destructive rate of material transportation. , is its main disadvantage

[0004] Some other types of screw pumps, shaftless screw conveyors and other machinery also have good non-clogging performance, but these types of machinery usually do not have good suction and lift, and are mostly used for material feeding and transportation. The pump body The length of the pump is generally the distance that the material can be transported, and there is also relative motion between the moving impeller of this type of pump and the fixed wall of the pump body.

Images