Micron-level powder material sieving equipment and sieving method

Abstract

The invention relates to the technical field of sieving equipment, in particular to micron-level powder material sieving equipment and a sieving method thereof. The micron-level powder material sieving equipment comprises an air supply device, a material collecting device and an airflow pipeline arranged between the air supply device and the material collecting device; the air supply device is connected with a feeding device; the position of the airflow pipeline near the material collecting device is provided with a sieve screen slot; the sieve screen inserting slot is arranged obliquely; theinclined angle is 20-80 degrees; the sieve screen inserting slot is provided with a sieve screen inserting plate which is matched with the sieve screen inserting slot; a sieve screen is detachably paved on the sieve screen inserting plate; and the position of the airflow pipeline near the lower end of the sieve screen inserting slot is provided with a coarse material outlet. According to the invention, the airflow and powder materials are mixed uniformly, and the powder materials are fully atomized; moreover, the micron-level powder material sieving equipment has the characteristics of simplified technique, low production cost, high sieving efficiency, good sieving effect, high efficiency, energy saving, and convenience for widespread popularization and application.

Description

technical field [0001] The invention relates to the technical field of screening equipment, in particular to a screening equipment and screening method for micron-sized powder materials. Background technique [0002] Screening machine, also known as powder sieving machine, uses the relative movement of bulk materials and the screen surface to make some particles pass through the sieve holes, and divide sand, gravel, crushed stone and other materials into different levels of vibrating screens according to particle size. Sub-machinery. [0003] At present, most of the powder separation equipment adopts vibrating sieving machine. When sieving solid particle materials, this kind of sieving machine relies on the reciprocating motion or vibration of the screen surface to leak the solid particles on the screen from the screen, and will be larger than the screen. The pore-sized particles are discharged from the coarse material outlet. Due to the use of specific power equipment such...

AI Technical Summary

Problems solved by technology

However, this kind of airflow sieving machine has exposed the following problems in long-term use: 1) It is necessary to use cyclone separator baffles and heavy objects. The equipment has complex structure, high equipment cost, high maintenance cost, large volume and large floor space. , which is neither easy to maintain nor conducive to popularization and application; 2) There is a special screening machine, the structure of which is complex, the cost of equipment is high, maintenance is inconvenient, and energy consumption is large; 3) There is an arc-shaped air intake pipe above the screening machine , there are airflow ducts between the air inlet of the fan and the screening machine, and between the air outlet of the screening machine and the cyclone separator. The material and the air are mixed unevenly. When there is a lot of powder in the feeding port, the atomization of the powder is not sufficient, and even the powder becomes a block, and the separation efficiency is low. What is more serious is that the block powder breaks the screen, and the equipment cost is high. ;4) The sieve in the sieving machine is installed vertically. The powder with a particle size slightly larger than the mesh aperture is particularly easy to block the mesh, and the powder with a larger particle size is easy to accumulate at the lower end of the feed port of the sieve, further blocking The lower mesh of the screen has low screening efficiency and poor screening effect

Images