Vertical cylinder screen

The structural properties of the cylindrical sieve developed in 1981 are as follows.
Structure
The structure of the vertical cylindrical sieve is shown in the figure below.

The machine is mainly composed of motor, reducer, tank body, water jacket, impeller, sieve plate, feeding cylinder and hose valve. The screen of the cylindrical sieve comprises a screen frame and a screen surface. The screen frame is welded from flat steel and round steel. The screen surface is composed of 53 nylon sieve plates and composed of 6 large sieve plates. The sieve holes can be replaced with sieve plates of 0.15, 0.20 and 0.30nn according to the requirements of the graded products. [next]
2. Technical parameters
The main technical performance of the vertical cylinder screen is shown in the table below.

3. Working principle The motor drives the impeller to rotate after being decelerated by the reducer. After the slurry is fed into the ore cylinder in a tangential direction, the slurry falls uniformly along the periphery of the ore supply to the rotating impeller. Due to the combined action of centrifugal force, gravity, rising hydraulic force and mechanical stirring force, the slurry is rotated around the inside of the cylindrical sieve at a certain angular velocity, and the fine particles in the slurry pass through the sieve hole to be discharged under the sieve; the coarse particles and inclusions therein The fine-grained portion falls from the inside of the cylindrical sieve into the cone. During the falling of the material, it is subjected to the rising water introduced into the cone, so that the fine-grained portion thereof rises through the guide tube into the impeller interlayer and enters the inside of the cylindrical sieve. And sifting the newly added slurry again. After the coarse fraction passes through the rising water flow, it continues to fall to the sand discharge port and becomes the product discharged on the sieve. [next]
According to the nature of the ore supply and the requirements for the graded products, the optimum number of impeller revolutions and rising water consumption of the machine must be determined by experiment.
4. Industrial test
A processing plant in Nanshan iron ore test machine in the first industrial trial of Nanshan Iron Washan Mill plant, equipment installed in the third series production, processing a spiral classifier overflow, overflow content -0.125mm It accounts for 40-50%, and -0.076mm accounts for 30-35%. On-site requirements for the screened product -0.125m content of about 85%, -0.076mm content of more than 65%.
On the basis of the conditional test, an industrial test of 18 batches of three consecutive batches was carried out, and the average indicators are listed in the table below.

The results show that the ø2m vertical cylinder sieve is used to screen the overflow product of the spiral classifier in the concave mountain plant. The mass efficiencies calculated by the -0.125 and -0.076mm grain sizes are 81.84% and 85.61%, respectively, and the mass efficiencies are 70.75. %: and 64.70%.
B Malanzhuang Iron Ore Production Test Ø2m vertical cylinder screen is installed in the production process of the Malanzhuang Iron Ore Plant to replace the flat fine screen for industrial assessment. The following figure shows the original production process (a) and the test part process (b). [next]

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