Frac sand screening machine working principle

After the screen machine is started, the screen box reciprocates back and forth under the action of inertial force. The screen box drives the screen surface to periodically shake, so that the materials on the screen surface will make a directional jump movement with the screen box. The material smaller than the screen surface aperture After falling through the sieve hole, it becomes the sieve. The material larger than the hole diameter of the sieve surface is discharged from the discharge port after continuous tumbling and jumping movement to complete the screening work.

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Working principle and parameters of industrial slurry pump

In order for the industrial slurry pump to fully play its role, we need to understand the working principle of the industrial slurry pump: https://www.lzzgmachine.com/products/supporting-equipment/slurry-pump.html Under the action of centrifugal force, the liquid is thrown from the center of the impeller to the outer edge and gains energy to leave the outer edge of the impeller at a high speed and enter the volute pump shell. In the volute pump case, the Fluid is slowed down due to the gradual expansion of the flow channel, and part of the kinetic energy is converted into static pressure energy. At last, it flows into the discharge pipe and is sent to the place where it is needed. When the liquid flows from the center of the impeller to the outer edge, a certain vacuum is formed in the center of the impeller. Above the liquid level of the storage tank is greater than the pressure at the pump inlet, the liquid is continuously pressed into the impeller. LZZG slurry pump pe...

Sandblasting nozzle classification and use

Using high-pressure air as a power source to drive abrasive particles to hit objects within a certain range will produce a great impact. The function of the sandblasting nozzle is to spray abrasive particles on the object evenly and efficiently. Sandblasting nozzles can be divided into: straight hole sandblasting nozzle, Venturi sandblasting nozzle , double Venturi sandblasting nozzle, angle sandblasting nozzle Straight hole nozzle: There are only contraction section and straight section inside, the structure is simple and easy to manufacture. This kind of nozzle cannot overcome the vortex phenomenon existing at the inlet end, and the pressure loss is large; the abrasive velocity at the outlet is less than 100m/s under the pressure of 0.7MPa.

How to build a sand and gravel aggregate production line

High-quality aggregates (coarse aggregates and fine aggregates, fine aggregates are sand): First, the shape of the particles should be good, and the senses should be good; second, the gradation should be reasonable. Especially for machine-made sand, high-quality machine-made sand products must not only meet the sand requirements of commercial concrete, but also meet the requirements of higher standards for ready-mixed mortar sand (ready-mixed mortar is an inevitable requirement in the future. On-site stirring will be phased out over several years). Reasonable continuous grading can meet the needs of high-quality concrete. Both are indispensable. The fifth condition for the success of the sand and gravel aggregate production line is that the aggregate product of the production line must meet the requirements of soil content. High-quality concrete has higher and higher requirements for soil content. The seemingly simple problem may be the reason for the failure of the project. Ther...

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