Powder conveying pump and powder conveying system

Abstract

The invention discloses a powder conveying pump and a powder conveying system. The powder conveying pump comprises a shell (1), a feeding inlet (11) is formed in one end of the shell (1), a dischargehole (12) is formed in the other end of the shell (1), and a conveying passage making the feeding inlet (11) communicated with the discharge hole (12) is formed in the shell (1); at least two materialpushing mechanisms (2) are arranged on the two opposite sides of the conveying passage, each material pushing mechanism (2) comprises blades (21) which can rotate in the conveying passage, and the blades (21) on the two sides are arranged to oppositely rotate so as to push powder entering from the feeding inlet (11) to the discharge hole (12). The material pushing mechanisms (2) on the two sidesare arranged in the conveying passage in a staggered mode in the longitudinal direction. The powder conveying pump and the powder conveying system are simple in structure, low in failure rate and capable of achieving continuous conveying, operation is stable, and the requirement range of powder granularity and dryness is wide.

Description

technical field [0001] The invention relates to powder conveying technology, in particular to a powder conveying pump and a powder conveying system. Background technique [0002] At present, the pneumatic conveying technology is usually used to transport the powder from the normal pressure environment to the high pressure environment, and it is transported through the lock bucket (that is, the three warehouse pumps). The conveying device includes a normal pressure chamber, a variable pressure chamber, a high pressure chamber, Switching valves and control systems set between each warehouse. [0003] The specific process of powder transportation is as follows: the powder is loaded into the atmospheric pressure chamber, the variable pressure chamber is released to normal pressure, the control valve between the atmospheric pressure chamber and the variable pressure chamber is opened, and the powder falls to the variable pressure chamber by its own weight. When a certain materia...

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Problems solved by technology

[0008] (4) Factors such as complex equipment, large pressure fluctuations in the working process, frequent action of the control valve and easy damage lead to a high failure rate of the conveying device, resulting in low conveying efficiency

[0011] Although some material conveying devices or methods are also disclosed in the prior art, for example, Chinese patent application CN103264903A discloses a kind of air-tight loading and unloading device for bulk materials and the transmission through the rotating air lock feeder disclosed in US patent application US2003 / 0044244A1 However, none of the equipment disclosed in this patent application can realize the pressurization function from low pressure to high pressure, so it cannot be applied to the powder transportation from normal pressure environment to high pressure environment

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