Compact type segmental volute integrated high-speed shield pump

Abstract

The invention provides a compact type segmental volute integrated high-speed shield pump. The compact type segmental volute integrated high-speed shield pump comprises a motor, a secondary impeller, apump body, a guide vane and a first impeller, wherein the motor is installed on the pump body, and the secondary impeller and the first impeller are installed on an output shaft of the motor; the guide vane is fixedly installed in the pump body, and the guide vane is located between the secondary impeller and the first impeller; the inlet section of the pump body is a cylindrical segment, and theoutlet section of the pump body is a volute of a quasi-helical structure; the first impeller is installed in the segment of the pump body, and the secondary impeller is installed in the volute of thepump body; and the outside diameter of the first impeller is less than that of the secondary impeller. According to the compact type segmental volute integrated high-speed shield pump, the number ofparts can be reduced, so that the structure is compact, and the efficiency of the pump is improved.

Description

technical field [0001] The invention relates to the field of canned pumps, in particular to a compact high-speed canned pump with segmented sockets and shells. Background technique [0002] Canned pumps use static seals instead of mechanical seals, which are safer and more reliable than ordinary centrifugal pumps. They are especially suitable for conveying toxic, harmful, flammable and explosive media, and are widely used in petroleum, chemical, pharmaceutical, aerospace and other fields. Canned pumps used in the aerospace field usually have small flow rate and high head. In addition to safety and reliability, canned pumps also require small size, light weight and high efficiency. Existing multi-stage shielded pumps generally have a segmented bar-through structure, which is loose in structure and has many parts, making it difficult to disassemble and assemble, and the pump outlet is directly set on the cylindrical pump body, without the slow energy collection effect of the v...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention provides a compact segmental casing-integrated high-speed canned pump, which can overcome the loose structure of the existing segmental multi-stage canned pump, which has many parts and is difficult to disassemble and assemble. The efficiency is relatively low, and it is difficult to meet the technical upgrading requirements of the aerospace and aviation fields

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