Aluminum formwork shot blasting machine
The roller conveyor through-type shot blasting machine is the core equipment of modern aluminum formwork production lines (especially for large-scale production), and the design of formwork shot blasting machines is highly specialized. The following is a detailed analysis of the main components and core functions of the template shot blasting machine for you.
Overview of the Aluminum Formwork Shot Blasting Machine System
A complete roller conveyor through-type aluminum formwork shot blasting machine is an automated system integrating mechanics, electricity, dust removal, separation and control.
The working process of the aluminum formwork shot blasting machine is as follows: feeding → roller conveyor feeding → multi-angle shot blasting cleaning → roller conveyor blowing → discharging.
Introduction to the main components and functions of the template shot blasting machine
1. Room system
Function: It serves as the sealed chamber for the entire shot blasting operation, carrying the shot blasting machine, accommodating the flying abrasives, and preventing noise and dust from escaping.
Structural features
High-strength sealing structure: Made by welding thick steel plates and section steel, with replaceable high-chromium alloy or manganese steel wear-resistant guard plates inside to resist the continuous erosion of abrasives.
Labyrinth sealing curtain: Multiple layers of wear-resistant rubber curtains are set at the inlet and outlet, allowing workpieces to pass through but preventing abrasives and dust from escaping to the greatest extent.
Inspection door and observation window: Facilitate daily maintenance and observation of shot blasting status.
Special design: For aluminum formwork, the internal design of the chamber body needs to be smoother to reduce dead corners for material accumulation and avoid cross-contamination of different abrasives.
2. Shot blasting System (Core)
Function: The "heart" of the shot blasting machine, accelerating the abrasive and projecting it at high speed and in a directional manner onto the surface of the workpiece.
Core components
Impeller and blades: Core components for high-speed rotation, made of high-chromium wear-resistant cast iron. Aluminum formwork shot blasting usually adopts a lower rotational speed to control the strength.
Directional sleeve/shot distribution wheel: Controls the Angle and fan surface of abrasive ejection, and can be precisely adjusted according to the placement of the template to ensure full coverage of all surfaces.
Motor: Drives the impeller, usually a variable frequency motor is adopted, which is convenient for stepless speed regulation and precise control of shot blasting intensity.
Layout: Reasonably arrange multiple shot blasting machines (commonly 2-4 units) on the top and sides of the chamber to ensure that the front, back and sides of the aluminum formwork can be evenly cleaned without any blind spots.
3. Roller conveyor system
Function: It can carry and smoothly transport aluminum formwork through the cleaning chamber, which is a manifestation of the "through type".
Key parts
Input/output roller conveyor: Responsible for the transmission between the feeding area and the discharging area.
Indoor roller conveyor: Located in the shot blasting room, it directly withstands the impact of abrasives. The rollers must be covered with wear-resistant rubber or polyurethane. The use of metal rollers is strictly prohibited to prevent damage to the surface of the aluminum formwork and reduce noise.
Drive unit: Driven by a variable frequency motor and a reducer, it can achieve stepless speed regulation, thereby precisely controlling the passage time of the aluminum formwork in the shot blasting area (i.e., shot blasting time), which is a key parameter for controlling the cleaning effect and roughness.
4. Abrasive Circulation and Separation System (Key Technology)
Function: Recover, clean, screen available abrasives, and continuously supply clean abrasives to the shot blasting machine. The quality of this system directly determines the shot blasting effect, abrasive consumption and the surface quality of the workpiece.
Processes and Components
Collection: The mixture of abrasives, aluminum shavings and dust that fall off after ejection leaks through the grille at the bottom of the chamber.
Screw conveyor: Located in the pit, it conveys the mixture laterally to the bottom of the elevator.
Bucket elevator: A vertical air separation separator that lifts the mixture to the top.
Air separation separator (core) : By applying the principles of aerodynamics and adjusting the wind speed, it precisely separates available abrasives, large debris, and fine dust.
Available abrasives: Return to the shot blasting machine for continued use.
Fragments: Discharge into the waste bin.
Dust: Enters the dust removal system.
For aluminum formwork: The separation purity requirement here is extremely high. It must be ensured that no heterogeneous abrasives (such as iron filings) are mixed into the circulation system; otherwise, the aluminum surface will be contaminated.
5. Dust removal system
Function: Collect and filter the dust within the system, keep the working environment clean, meet environmental protection requirements, and ensure the normal operation of the separator at the same time.
Core components
Cartridge dust collector: The mainstream configuration of modern shot blasting machines. It features high filtration accuracy, compressed air pulse reverse blowing for ash cleaning, and a high degree of automation.
Fan and pipeline: Generate negative pressure to draw dust into the dust collector.
Explosion-proof design (crucial) : Aluminum powder poses an explosion risk when it reaches a certain concentration in the air. Therefore, the dust collector of the aluminum formwork shot blasting machine must be equipped with explosion-proof devices, such as explosion-proof valves and explosion relief plates, and ensure good grounding.
6. Purge system
Function: To remove the residual floating dust and abrasive particles on the surface of the aluminum formwork after it is thrown out of the shot chamber and before it is discharged.
Composition: Usually composed of multiple sets of high-pressure air nozzles, installed in a sealed purging chamber, it conducts all-round purging of the formwork from top to bottom and left to right to ensure that the formwork is clean before leaving the factory.
7. Electrical control system
Function: The brain of the entire device, achieving automated, safe and traceable production.
Centralized control: All motors, fans and shot blasting machines can be started and stopped with one click on the control cabinet or touch screen, and their status can be monitored.
Parameter setting and storage: It can set and store process parameters such as the roller conveyor speed (shot blasting time) and shot blasting machine frequency (ejection speed) of different specifications of aluminum formwork, achieving "formulation-based" production.
Safety interlock: All inspection doors and emergency stop switches are interlocked with the main circuit to ensure safety.
Fault diagnosis and alarm: Real-time monitoring of current, temperature, blockage and other states. Immediately alarm and indicate the fault point when an abnormality occurs.
Summary: The manifestation of the specificity of aluminum formwork
A qualified aluminum formwork roller conveyor through-type shot blasting machine, its professionalism is reflected in every detail:
Pollution-free materials: The circulation system is pure, using stainless steel shot or ceramic sand.
Protecting the workpiece: All contact surfaces (roller tracks) are flexibly covered.
Precise control: Full frequency conversion control, parameters can be precisely fine-tuned to adapt to the soft characteristics of aluminum.
Safety and explosion-proof: The dust removal system is specially designed for explosion-proof purposes.
Efficient cleaning: Equipped with a powerful purging device.
This kind of equipment is an essential tool for achieving efficient, high-quality and large-scale surface treatment of aluminum formwork. When making a choice, it is essential to examine the design details of each of the above-mentioned subsystems, especially the separators and dust collectors.
