As an investment product, how to design a suitable sandblasting room is a question worthy of attention. A suitable sandblasting room can not only help you save costs, but also create profits for you and help your business to a higher level.
Choosing a sandblasting room is a relatively open question, but in general, these criterions should always be followed:
1 The size of sandblasting room
You need an encloser place to put the sandblasting room. The size of the space depends on the size of object item that need to sandblasting. And when designing the size of the room, in addition to the size of the workpiece, you also need to consider the area required by the workers for sandblasting activities, the best blasting distance between the spray gun and the workpiece, etc. Generally, adding a distance of 1m around the workpiece is sufficient.
2 Material Handling system
The conveying method of the workpiece is also the focus of attention when designing the blasting room. How to put the items you need to blast into the blasting room, and handle them safely and conveniently, and then move the items out for storage, or proceed to the next process?
Most users will choose a trolley with rails for material handling and movement. This is the most economical and safe method. During sandblasting, the trolley is parked in the sandblasting room and the workpiece can be easily sandblasting.
If you are handling very large and heavy pieces of equipment like a pump station or engine block, with low volume, using a forklift could be the right solution for you.
Another method is to install an overhead conveyor on the roof of the blasting room, which allows the items to hang below them and moved in and out the blasting room.
Some users will choose the crane they already own, and design a movable roof controlled by cylinder, can let the crane into the blasting area with workpieces when the movable roof is opened.
3 Floor recovery system
Floor Recovery System is an efficient and inexpensive solution for recovering used abrasive with minimal effort from operator. System is suitable for large or small rooms, and offers flexibility in recovery floor layouts. Abrasive residues must be swept or shoveled into floor hopper to be recovered by system.
This recovery system can handle major light-to-heavy abrasives available on the market today, including heavy media such as aluminum oxide, steel shot, and steel grit. With media recovery capacity of over 2,000 lb. per hour and various floor hopper layouts, this system is designed for maximizing operator productivity while simplifying room cleaning after blasting operations.
4 Sandblasting Room Ventilation
During the sandblasting process, a large amount of dust will be generated, which will make the inside of room dusty. And the chemical nature of the dust will endanger health. Designing a suitable dust collector is needed.
There are three different airflow options to achieve this:
The working principle of the dust removal system in the room is: because the dust extraction fan extracts the gas and dust in the sandblasting room, the airflow outside the sandblasting room enters the sandblasting room through the coarse filter on the top of the sandblasting room, and then passes through the top of the sandblasting room. The uniform flow plate enters the sandblasting studio in the sandblasting room, forming a top-down airflow on the cross section of the sandblasting room, and the dust and dirt in the sandblasting room enter the dust extraction port with the airflow, and finally pass through the dust removal The pipeline enters the dust removal system, and the clean air is filtered by the dust removal system and discharged into the atmosphere. The dust and dirt are stored in the dust cylinder for regular cleaning.
How to calculate the air volume of dust collector in the sandblasting room?
Calculated by cross-sectional area. The method of calculating the cross-sectional area is to multiply the length by the width. It is important to explain here that the length and width are the areas that the ventilation can pass through. If there are other flowing air inlets besides the door, it should be added for rational calculation. ：Air volume=cross-sectional area*wind speed*3600
It’s also important to consider the return on investment (ROI) when building a blast room facility. The amount of blasting done over a given period and the number of employees required both will influence blast room decision-making. Additionally, selecting the proper abrasive requires a thorough consideration of all of the parts that will be blasted. For example, mineral abrasives break down faster than steel grit abrasives but allow for greater flexibility for various blasting needs. Disposal costs also need to be factored in and can vary greatly depending on material and volume.
The operation process of sandblasting room
The most widely used sandblasting room in the field of rust removal of workpieces is the automatic sandblasting room, which is applied to various industries and has the advantages of convenient operation and high production efficiency. The operation process of the automatic sandblasting room equipment is as follows.
- The gas storage tanks, pressure gauges, and valves of the automatic sandblasting room should be checked regularly. The gas storage tank discharges dust once every two weeks, and the filter in the sand tank is checked once a month.
- Check whether the ventilation pipe of the sandblasting equipment and the door of the automatic sandblasting equipment are sealed. Five minutes before work, the ventilation and dust removal equipment must be activated. When the ventilation and dust removal equipment fails, the equipment is prohibited from working.
- Wear protective equipment before work. It is not allowed to operate automatic sandblasting equipment with bare arms.
- The compressed air valve of automatic sandblasting equipment should be opened slowly, and the air pressure must not exceed 0.8MPa.
- It is not allowed to blow dust on the body with compressed air in the automatic sandblasting room.
- When the sandblasting equipment is working, no unrelated persons are allowed to approach. When cleaning and adjusting the operating parts, the machine should be shut down.
- The sandblasting equipment’s operating procedures The sand size should be compatible with the work requirements, generally between ten and twenty, and the sand should be kept dry.
- After the work is finished, the ventilation and dust removal equipment of the automatic sandblasting machine should continue to operate for five minutes and then shut down to discharge indoor dust and keep the site clean.
Maintenance of sandblasting room
In order to make the sand blasting room have a longer service life and prevent possible dangers, we must maintain and maintain the blasting room regularly. So how to maintain the sand blasting room?
The sandblasting room is a kind of equipment that meets the current environmental protection needs. During the use of the equipment, if you want to always maintain the use and environmental performance of the equipment, regular maintenance and maintenance are indispensable.
Sandblasting pipeline, gas path
Check whether the sandblasting hose is damaged and replace it immediately. Check whether the connection is firm, and if there is leakage, eliminate it immediately.
Check the damage, wear and connection of the air pipe to ensure that each joint is sealed reliably. If it is worn, it should be replaced immediately.
Floor recovery system
At work and after get off work every day, check whether there are large impurities in the floor recovery system, if so, it should be removed.
Before going to get off work, check whether the protective glass of the respirator is damaged or whether it affects the processing operation. If it is affected, replace it immediately. Ensure personal safety; check the air filter and air source of the respirator to ensure normal air supply.
Because the glass of the protective clothing is fragile, it should be handled with care during sandblasting. Don’t touch it indiscriminately, and it should be kept stable when not in use.
Blasting gun, nozzle
Check the wear of the gun and nozzle, if it is severely worn or the efficiency of the sandblasting process is significantly reduced, replace it immediately.
Environmental protection sandblasting room Because the nozzle, protective clothing glass, spray gun switch and other parts are fragile, you should hold it gently during sandblasting, do not shake or touch, and keep it steady when not in use.
Sand control valve sand discharge adjustment lever
Check whether the adjusting rod is worn out and must be replaced in advance.
Protective rubber in the room
Check whether the rubber in the room is damaged and whether it is replaced according to the situation.
Door, safety power switch, gun switch
Check whether the gate control safety switch and spray gun switch are sensitive and effective. If the action fails, it should be repaired immediately.
Check the seals, especially the door seals. If they are found to be invalid, they should be replaced immediately.
Check whether the operation control buttons of each device are normal. If an abnormality is found, it should be repaired immediately.
Check the protective glass, ballast and bulb usage of the lamp.
Filter dust box ash box
Clean the dust in the dust box of the filter element and the dust box of the separator before work.
According to the above-detailed understanding of the maintenance and maintenance methods of the environmental protection sandblasting room, the equipment can be used better, the failure of the equipment can be reduced, and the service life of the equipment can be prolonged on the premise of ensuring the efficiency of the equipment.
Whenever workers are sandblasting, the steel sand will hit the surface of the workpiece, and at the same time, the steel sand will splash around, the splashing steel sand will hurt the workers, and the workpiece will produce a lot of dust after descaling, the dust will cause harm to the human respiratory system, so the workers must wear protective clothing and sandblasting helmets whenever they work. Sandblasting suits are used to protect workers. They consist of sandblasting helmets, sandblasting suits, gloves, and breathing filters, with which workers can work safely when they wear them.
Abrasive blasting is the process of cleaning the surface of rough chemical parts by using the impact of steel sand at high speed. Abrasive blasting with sands containing crystalline silica can cause serious or fatal respiratory disease. We use steel grit instead of abrasives containing Silicon dioxide to protecting workers. There are many different types of steel shot, including steel grit, steel shot, cut shot, abrasive shot and stainless steel shot, and the type of shot to be used when blasting is adjusted to suit different needs.
Advantages of sandblasting room
The sandblasting room can be designed and manufactured according to the customer’s product characteristics and sandblasting requirements. There is no need to design and manufacture complex foundations, which saves foundation construction costs and greatly saves engineering costs. There is no need for a large amount of abrasives to be stocked in the recycling spiral.
The abrasive recovery rate The main electrical components are imported products, which have the advantages of stable performance, safety and reliability, long service life, simple maintenance, etc.; the sandblasting room has high-definition visibility inside the chamber, and the room body is naturally filled with air, which saves energy Consumption; the sandblasting room adopts two-stage dust removal, the first stage adopts a cyclone separator, and the second stage adopts a filter-type dust removal system.
The total dust removal efficiency can reach more than 99.99%; on the upper part of the front roof of the sandblasting room, there is a sound “Light alarm system” is equipped with an emergency stop call button in the sandblasting room; the electrical control of each system adopts interlocking control. When one of the systems fails, the related systems stop working and the spray gun stops spraying; the sandblasting room adopts Architectural decoration design, simple appearance, beautiful, standardized, good noise reduction effect, and convenient installation.