Vertical internal and external mixing shaft-seal-free self-sucking pump

A non-shaft seal, self-priming pump technology, applied in non-variable-capacity pumps, pumps, drive pumps, etc., can solve the problems of reducing the self-priming capacity of the self-priming pump, long self-priming time, and increasing the water absorption resistance of the impeller. The effect of speeding up gas-water separation, stable water absorption flow rate, and speeding up exhaust speed
CN102192157BActive Publication Date: 2013-04-10GUANGZOU BAIYUN PUMP GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGZOU BAIYUN PUMP GROUP
Publication Date
2013-04-10

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Abstract

The invention discloses a vertical internal and external mixing shaft-seal-free self-sucking pump which comprises a pump body, a pump cover, a pump shaft, a main impellor, a main impellor seal chamber, an assistant impellor chamber, an assistant impellor, a water sucking chamber, a water outlet, a water inlet pipe, a water inlet pipe flange, a volute chamber and a gas-water separation chamber, wherein the top surface of the main impellor and the top surface of the assistant impellor are respectively provided with a radial main impellor balancing rib and a radial assistant impellor balancing rib; the outer edge at the bottom surface of the assistant impellor is fixedly provided with an annular seal pad; and the bottom surface of the assistant impellor chamber is provided with an annular supporting plate. Through the self-sucking pump provided by the invention, the issue of air intake of a shaft seal can be solved, high-vacuum continuous air exhaust can be kept all the time in the self-sucking process, the self-sucking capability is improved, and the self-sucking time is shortened.
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Description

technical field

[0001] The invention relates to a self-priming pump, in particular to a vertical self-priming pump with internal and external mixing without shaft seal. Background technique

[0002] Self-priming pump, that is, self-priming water pump, is a kind of water pump, which is divided into internal mixing type and external mixing type, and is used in large enterprises such as cement plants, petrochemical plants, and steel plants.

[0003] The main structure of the vertical self-priming pump is: the pump body is composed of the upper and lower pump casings, the pump body is provided with a pump cover, and the pump body is equipped with a water absorption chamber, a vortex chamber, an air-water separation chamber and an auxiliary impeller chamber. The water suction chamber is provided with a water inlet pipe, and the inlet of the water inlet pipe has a flange for connecting external pipes for water supply. The top of the water suction chamber is provided with a water o...

Claims

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