Dustproof sieving device for powder material for chemical experiment

Abstract

The invention discloses a dustproof sieving device for a powder material for a chemical experiment. The dustproof sieving device comprises an outer shell, a horizontal arrangement plate, a horizontalsliding plate, a sliding sleeve, a swing sleeve, a fixed rotary shaft and a motor. The horizontal arrangement plate, the horizontal sliding plate, the sliding sleeve, the swing sleeve, the fixed rotary shaft, a dust hood, an air pipe, an air pump and a dedusting box are arranged on the outer shell. The horizontal arrangement plate is provided with a sliding clamping groove and a supporting roller.The horizontal sliding plate is provided with a limiting protrusion, a limiting spring, a rack and an upper oblique block. The sliding sleeve is provided with a sliding rod, a lower oblique block, areset spring and a sliding rotary shaft. The swing shaft is provided with a sieve box, a rotary horizontal arrangement plate and a movable supporting part. A sector gear, a swing rod and a sliding groove are arranged on the periphery of the fixed rotary shaft. The motor, a rotary rod and a sliding protrusion are arranged at the upper end of the outer shell. The horizontal sliding plate swings leftand right on the horizontal arrangement plate, thus, the sliding rod drives the swing sleeve to swing left and right, the sieving efficiency is improved, and dust flying is avoided by additionally arranging an air pump and the dedusting box.

Description

technical field [0001] The invention relates to a powder screening device, in particular to a dust-proof screening device for powder materials used in chemical experiments. Background technique [0002] Powder metallurgy is a process technology for producing metal powder or using metal powder (or a mixture of metal powder and non-metal powder) as raw material, forming and sintering to manufacture metal materials, composite materials and various types of products. At present, powder metallurgy technology has been widely used in transportation, machinery, electronics, aerospace, weapons, biology, new energy, information and nuclear industries, and has become one of the most dynamic branches of new material science. [0003] In the research of powder metallurgy, there are relatively strict requirements on the particle size of the powder. Therefore, in the powder making stage before the experiment, the powder needs to be sieved and separated to determine different particle sizes...

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Problems solved by technology

[0004] Existing laboratory sieving methods generally use manual sieving, but this sieving method is inefficient; for some high-level experimental analysis centers, powder sifting machines are generally used to sieve powder, but The structure of the powder sieving machine is single, the number of meshes is fixed, and the disassembly and replacement are relatively complicated; at the same time, the capacity of the ordinary powder sieving machine is limited, and the stability is poor when a large amount of powder is sieved

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