Pulse-jet screening machine

Abstract

The invention discloses a pulse-jet screening machine. The pulse-jet screening machine comprises a machine shell, a motor, a main rotating shaft, a net rack, a screen cloth, an atomization component, a rotational flow hammer, a jetting cabin clap board, a venturi-tube, a main pipe for compressed air, a jetting pipe for the compressed air and an electromagnetic pulse valve. The machine shell comprises a screening portion, an arrangement portion for the venturi-tube and an arrangement portion for the jetting pipe for the compressed air from top to bottom. The atomization component comprises an atomization paddle, an inner support component, an outer support component, an auxiliary smashing tooth and a main smashing tooth. The pulse-jet screening machine has the advantages of being reasonable in structure, high in screening efficiency and good in screening efficiency; on the one hand, fake capsule diameters which are collaborative due to an adsorption force can be damaged, and the yield is improved; on the other hand, the screen can be renewed, the changing time of the screen cloth is reduced greatly, the cost is saved, and the phenomenon of super-diameter level mixing can be prevented from generating effectively.

Description

technical field [0001] The invention relates to a powder sieving machine for classifying nano-scale carbon black particles or powder, in particular to a pulse jet powder sifting machine, which belongs to the technical field of chemical equipment. Background technique [0002] The most traditional sieving machine relies on a certain frequency of motor vibration to achieve granular objects passing through the screen to achieve material grading. Because it is an open sieve, the material is dusty during the sieving process, causing waste and loss virtually. , and lead to great pollution of the natural environment and the working environment. At the same time, this powder sieving machine has great requirements on materials, such as specific gravity, viscosity, and chemical properties. It can only sieve some large-grained materials, and cannot sieve many materials that require high-mesh sieving. [0003] So people began to focus on the research of powder sieving machines that can...

AI Technical Summary

Problems solved by technology

[0004] However, the airflow sifter currently in use can only continuously sieve particles or powdery materials with a fineness range of 80-500 mesh (micron), while nano-scale carbon black particles or powdery The efficiency and effect of classifying substances are not good, mainly due to the following two aspects: On the one hand, due to the strong adsorption force of nano-scale carbon black particles or powders, it will be found in actual use that nano-scale carbon black particles Or the powder itself is very easy to adsorb together to form a false particle size, which greatly reduces the output, and the nano-scale carbon black particles or powder itself are also easy to stick to the screen and block the screen, while the existing The structure of the current airflow sieving machine can not regenerate the screen, which greatly increases the replacement rate of the screen and increases the cost; on the other hand, because there are many nano-scale carbon black particles or powders that cannot pass through the screen On the Internet, the working principle of the airflow sieving machine is to make the fully diffused powder particles spray to the screen with sufficient kinetic energy, so during the continuous spraying process, the nano-scale carbon black particles or powder that could not pass through will be The solids also pass through the screen, which will cause the phenomenon of over-diameter mixing

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