Spherical shot blasting machine

This machine makes damp granule into beautiful pellet by setting rotating centrifugal disk, blower, and pneumatic nozzle. Feed damp granule into rotating centrifugal disk, start fan then start rotating centrifugal disk. It can make the damp granule in float and circle by the air from gap, rotating centrifugal strength and itself gravity, appear circle rope-turning movement and become high-degree ball shape pellet.

Working Principle

Based on centrifugal force ejection and kinetic energy impact: a Spherical Shot Blasting machine applied in casting, forging, automotive, aerospace and other fields. The pellets enter the pellet wheel from the storage hopper and are evenly distributed to the high-speed rotating impeller blades. The impeller speed is usually 2000-4000 RPM. The pellets are accelerated along the blades under the action of centrifugal force and finally ejected at a speed of 60-100m/s (about 200-360km/h). The directional sleeve controls the projectile ejection angle to concentrate and impact the surface of the workpiece. The oxide scale, rust layer, sand residue, etc. on the surface of the workpiece are removed by the projectile impact for cleaning, or the metal surface is subjected to plastic deformation, forming a compressive stress layer and improving fatigue life.

Using various forces to make particles into balls: The spherical shot blasting machine applied in the fields of pharmaceuticals, food, cosmetics, etc. generally sets a turntable in a cylindrical container, with a gap between the turntable and the inner wall of the container. Wet particles are put into a rotating centrifugal disk, and after starting the blower, the rotating centrifugal disk is started to make the wet particles move in a circular rope like shape under the buoyancy of the air in the gap, the centrifugal force of rotation, and their own gravity, thus forming highly spherical pellets.

Structural Composition

Shot blasting device: including a first motor, a rotating disc, and a blowing pipe, etc. The first motor is set on the lower surface of the lower tank body, and its output shaft penetrates the lower tank body and is connected to the lower surface of the rotating disc. There is a gap between the outer edge of the rotating disc and the connecting sleeve, and the blowing pipe is used to provide airflow.

Discharge device: including discharge shell, discharge pipe, and blocking mechanism, etc. There is usually a certain angle between the central axis of the discharge pipe and the radial line of the upper tank body to improve discharge efficiency.

Installation device: composed of an upper tank body, a first connecting sleeve, a second connecting sleeve, a first connecting frame, and a second connecting frame, etc., used to connect and fix various components of the shot blasting machine.

Liquid supply, powder supply, and air supply systems: In spherical shot blasting machines used in industries such as pharmaceuticals, these systems provide necessary liquid and powder materials, as well as control air flow to ensure the shaping effect of particles.

Dust removal device: used to process the dust generated during the production process, ensuring the safety and cleanliness of the operating environment.

Transmission system, electrical control, and fault alarm system: ensure the normal operation and fault warning of equipment.

Application Area 

Automotive manufacturing: suitable for surface cleaning of automotive castings such as engine cylinder blocks, crankshafts, etc., removing impurities such as surface oxide scale and rust, and improving the surface quality of castings.

Shipbuilding: It can be used for surface treatment of steel wire ropes and other wires for ships. Through precise shot blasting trajectories, the surface of the wire can be uniformly cleaned to improve its corrosion resistance.

Mechanical processing: For surface cleaning and strengthening of various mechanical parts, such as gears, shafts, etc., surface roughness can be improved, and the wear resistance and fatigue resistance of the parts can be enhanced.

Aerospace: Used for surface treatment of aerospace components, removing surface defects, improving the reliability and service life of parts.

Pharmaceutical industry: used for preparing capsules, traditional Chinese medicine pills, etc., processing various wet particles into spherical particles.

Food industry: can process and shape food particles, such as making spherical candies, chocolate beans, etc.

Cosmetics industry: It is used to manufacture high-quality spherical particles, such as eye shadow, powder blusher and other powder cosmetics.

Equipment advantages

Efficient processing: It can quickly perform surface treatment on a large number of workpieces, greatly improving production efficiency compared to manual processing or other traditional processing methods.

Good processing effect: It can achieve uniform shot blasting treatment, making the cleaning or strengthening effect of the workpiece surface consistent, and improving the stability of product quality.

High degree of automation: equipped with automated projectile recovery, circulation system, and dust removal system, reducing manual intervention, lowering labor intensity, and improving the safety and reliability of equipment operation.

Wide applicability: It can adapt to the surface treatment requirements of workpieces with different materials, shapes, and sizes, as well as the process requirements of different industries, by changing different types of pellets, adjusting shot blasting parameters, etc.