rubber belt shot blasting machine 6

How to change the Rubber apron for Tumble Belt Shot Blasting Machine?

What is Tumble Belt Shot Blasting Machine?

Tumble belt shot blasting machine adopts the endless rubber apron to form a special barrel, to make the work pieces tumble continuously during shot blasting process .It is mainly used in forging work pieces and metal work pieces. Tumble belt shot blasting machine can be used not only ad a single machine ,but also as a part of line.

rubber belt shot blasting machine 1

The role of Rubber apron for Tumble Belt Shot Blasting Machine

The rubber of  tumble belt shot blasting machine is an important part, which is mainly responsible for the turning and transportation of the work pieces, the crawler is related to whether the equipment can run normally,.

So it is very necessary to carry out daily maintenance of the rubber apron of tumble belt shot blasting machine and prolong the service life as far as possible.

rubber belt shot blasting machine 2

The operational principle of rubber apron.

The main working principle of the rubber apron is that the three shaft rollers wear a seamless ring rubber belt, with two end plates pressed to form a flipping work bin, place the product on it, and clean the work pieces or casting through the action of positive and negative track.

If the rubber apron is used too long and cannot used, it can only be replaced.

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The following is introduction for you about how to change the rubber apron for tumble belt shot blasting machine.

  1. Check the damage of the rubber apron. In general, the rubber apronisdamaged by tearing and breaking. In both cases, a splint knife can be used to cut the rubber apron from the inside to the left.
  2. Take apart the round plate and disk inside the chamber, generally fixed screws re-chamber left and right wall panel cover plate, you can check it after you open the cover.
  3. Take the three pieces of drive rollers apart and pull them out from one side of the part (some have rollers),you need to take out the idler together.You should place the tightening wire rod in the lower left corner and lower right corner of the equipment in the upper position before you remove the roller.
  4.  Put the rubber apron  into the cleaning room, you can use the top of the chamber to open the hole for the larger rubber apron, with steel wire into the suspension way to install, you can also be in the shot blasting impeller position fixed a hand-drawn hoist to pull the rubber apron.
  5.  After the rubber apron is placed in a fixed position, it is inserted into the pull-out drive roller, and the wire rod is tightened to adjust the rubber apron running slowly, then the gate at the upper end of the wire rod is fixed after the determination.
  6.  After the new rubber apron  is replaced, it is very necessary to actively and passively drive the roller bearing to lubricate to increase its service life.

The replacement process is relatively simple, so it is not necessary to watch  the video of  how is the tumble belt shot blasting machine to replace the rubber apron. It can also be quickly started, it is recommended to carefully look at the relevant steps to independently complete the replacement of the tumble belt shot blasting machine’s rubber apron, through appropriate maintenance, tumble belt shot blasting machine has a very good working state, to ensure the workshop production task.

rubber belt shot blasting machine 4 rubber belt shot blasting machine 5

roller conveyor shot blasting machine 2

The maintenance of shot blasting machine

Any equipment will be consumed as long as they are used. As a representative of self-harm equipment , maintenance of shot blasting machine is very important. If not maintained on time, the life of the shot blasting machine will be greatly shortened. This will also increase the number of the times the workpiece is handled, and proper maintenance will increase the life of the equipment the significantly improve work efficiency.

Daily maintenance of shot blasting machine

  • Check whether the bolts on the shot blasting machine and motor are loose, whether the wear-resistant parts in the shot blasting machine are worn and whether the access doors are closed.
  • Check whether there is air leakage in the dedusting pipeline ,whether there is dust in the filter bag or whether there is debris on the filter screen in the separator.
  • Check whether the electric control shot supply gate valve is closed and check the abrasion of the guard board in the shot blasting room.
  • Check whether the limit switches are normal, whether the signal lights on the console are normal and clean the dust on the electrical control box.

Month maintenance of shot blasting machine

  • Check whether the bolts at the connection of each component are fixed.
  • Check whether the rotating parts operate normally and lubricate them timely.
  • Check whether the fan air duct is worn and fixed.

Quarterly maintenance of shot blasting machine

  • Check the intact condition of the bearing electric control box and fill it with lubricating oil.
  • Check the wear of the abrasive blast guard of the shot blaster.
  • Check the tightness of the bolts and flange connections of the motor, sprocket, fan, vibration transmission.
  • Replace the bearings on the main bearing block of the shot blasting machine with new high-speed lubricants.

Annual maintenance of shot blasting machine

  • Check the condition of all bearings of the shot blasting machine and add lubricating oil, check the bag filter, check all motor bearings, replace or replace the guard board in the shooting area, and the machine shall be maintained regularly.
  • Check the shot blasting cleaning indoor high manganese steel guard board, wear-resistant rubber and other guard boards, check the tension of the hoist, and timely tension when loosening.
  • Check the vibration of the shot blasting machine, stop working immediately in case of any abnormality, and regularly lubricate all motors and bearings on the equipment.
  • Add new projectiles regularly. When installing the blades of the shot blaster, the quality difference of a group of eight blades shall not be more than 5g, and check the abrasion of the blades.

Device Security

The scattered debris should be cleaned in time, and should be kept away from the equipment during operation to avoid unnecessary injury.

Cut off the power supply during equipment maintenance and mark it. Protective devices such as chains or transmission belts should be installed after inspection. Safety measures should be taken before each shot blasting machine is turned on. If an accident occurs during preparation, press the emergency button to stop working to avoid accidents.

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How to install shot blasting machine dust collector

Pulse dust collector refers to removing the dust attached the filter medium(bag or filter cartridge)by blowing compressed air. According to the size of the pulse dust collector there  may be several sets of pulse valves which are controlled by a pulse controller or PLC, open one set of pulse valves at a time to remove the dust it controls that part of the bag or filter cartridge and other bags or filter cartridge work normally. After a period of time ,the next set of pulse valves opens to clean the next part.

The lifting of the pulse dust collector should pay attention to prevent deformation. When the equipment leaves the factory the key parts are welded with lifting ears , please use the lifting ears for lifting. After the installation of the pulse dust collector box、bag room、air inlet and outlet、ash hopper, etc. All the joints shall be sealed and airtight. If welding and sealing are required ,airtight welding must be implemented and those with fasteners must be sealed and tighten all fasteners. For local air leakage use silicone or epoxy to stop the rain. The  seal of the bag filter is an important factor affecting normal operation and life. The pulse bag filter requires an air leakage rate of less than 3%.

When assembling the gas circuit part, the main air pipe has been made separately in the factory. As long as the site is assemble , the control air pipe( connected to the lift valve cylinder) must be installed on the site for blanking and sleeve buckle. The presence of debris all joints should be filled with sealing materials and leak proof after pressure test.

The installation of bag cage and filter bag is the most careful and careful work in the whole installation. Therefore ,it should be installed at the end . During the installation, the filter bag must not collide with the sharp and hard objects or be scratched. The life of the dust filter bag is greatly shortened. The method of installing the filter bag is to first put the dust-removing cloth bag into the bag chamber from the hole in the box of the box body, and then pinch the spring ring in the upper part of the bag into a concave shape, put it into the hole plate in the box, and then restore the spring ring It is pressed tightly on the circumference of the flower hole, and finally the bag cage is gently inserted from the mouth of the bag until the cover on the upper part of the bag cage is indeed pressed on the hole of the flower plate in the box. In order to prevent stepping on the filter bag, it is required to install a dust-removing frame for each filter bag installed.

dust collector1

Installation precautions:

In the installation of the bag dust collector, many operations such as welding must be performed, which will cause certain dust and other problems. At the same time, during the installation of the shell, there are quite a few temporary supports, so after the installation is completed, the temporary supports need to be removed in time, and the ash discharge valve under the ash bucket is removed. The interior of the dust collector is carefully cleaned. After cleaning, install the ash discharge valve. Otherwise, the problem of clogging the ash discharge valve is easy to occur during installation, which seriously affects the later use.

dust collector3

What should be paid attention to after the successful installation of pulse dust collector?

1、Connect the compressed air, check the joints of the compressed air pipeline, the shut-off valve, the water separator filter, the pressure regulator, and the oil mist device.

2、Start the ash conveying motor and see if it can work normally.

3、Measure the dynamic pressure value at the air inlet short pipes of the ash hopper. If the readings are not the same, use a manual butterfly valve to adjust and keep them flat to ensure that the load of each filter room is flat. Manual butterfly valve is locked.

4、The bag dust collector is controlled by electric ash, and the main fan is started. When the bag filter starts to run the dust, do not start the blowback dust removal equipment immediately. The dust should be gradually accumulated inside and outside the filter bag.

overhead rail shot blasting machine 5

Most practical shot blasting machine–overhead rail shot blasting machine

Overhead rail shot blasting machines can provide services in many different production areas, e.g. foundries and forges. Hanger type blast cleaning machines offer ideal conditions for effective and economical blast cleaning. The use of hangers allows for the reliable and economical blast cleaning of components, from small to very large workpieces. The machine can be easily and smoothly integrated into an existing production line. Overhead rail shot blasting machine is a kind of single-stroke continuous shot blasting cleaning equipment. It has static loading and unloading of workpiece, automatic and rapid transportation and positioning, and rotating shot blasting cleaning of workpiece.The whole machine adopts conventional electrical control, and the conveying track of workpiece stepless speed regulation

What the situation to choose overhead rail shot blasting machine?

Overhead Rail shot blasting machine is suitable for large quantities of workpiece processing, one day can blast tens of thousands of workpiece. That is, when the customer needs to blast a large number of workpieces every day, that can consider overhead monorial shot blasting machine.

What products are suitable for use overhead rail shot blasting machine?

Overhead rail shot blasting machines are versatile blast cleaning machines for mixed loads of medium and large work pieces that frequently include fragile or irregularly shaped work pieces.: Such as brake pad, gear, valve and others. Mechanical parts: Such as trailer chassis, engine cylinder head, motor housing and others. It is the ideal choice for automobile, tractor, diesel engine, motor, valve and other industries

The overhead rail shot blasting machine is a very cost-effective and multi-function type shot blasting machine. Moreover, they are also a very compact type shot blasting machine, a small corner of the workshop is pretty enough for the overhead rail shot blasting machine to place.

Abrasive-Sandblasting

Sandblasting Rooms That Everyone Should Know About

There are lots of people who have heard about the term sand-blasting room and also are making use of sandblast resist products as giveaways to their events and other parties. However, there are some people who are new to art of sandblast stencil. No matter what it is, sandblasting is a general term which is used to describe an action of forcing minute bits of material at a very high velocity in order to etch or clean a surface.

Abrasive Sandblasting

Sandblasting is the perfect solution for all of your cleaning needs of your property whether it may be for the reason of cleaning or preparation for painting, sandblasting is exactly what you need to get it done. Advanced Prep Coat aims to give you more insight into sandblasting so that you know exactly how it works. Let’s discuss everything in detail about Sandblasting and sandblasting rooms.

Sandblasting is also known by the name of abrasive blasting, is an advanced surface preparation method used by the professionals to clean up surfaces and any foreign materials. Not only for cleaning purposes, it can also be used in the removal of old paint, and prepare the surface before applying a fresh coat of paint.

What is Sandblasting Room and what are the benefits of it?

By taking away old coatings, rust, and other surface materials, blasting allows new coatings to better stick on to surfaces. Blast cleaning is environment friendly, diminishes chemical disposal costs, diminishes toxic chemical revelation, and allows companies to plan production in spite of the weather conditions, time of day, or other activities and processes happening close by. This pliable process can also allow for important cost savings; undeniably, one blast facility can pay for itself in just a year.

Preparation tips for Sandblasting Room

The Sandblast systems depend on modern, well-designed blast rooms to make sure a cramped, controlled, and clean environment for rasping recycling. Whether, removing an active coating or prepping a surface for a new coating optimal surface preparation with the use of air compressors is essential.

Requirements for Sandblasting Room

Sand blasting rooms also have many sizing and material-preparation constraints. Some factors to be taken into account include the size and weight of the largest work piece, the method of material handling, and the hours spent blasting, and the base materials. And, depending on the size of the largest work piece, four to five feet must be added to the width and length of the room. The height of the room is also determined by the largest work piece, but material handling plays an important role in that aspect.

Airing of Sandblasting Rooms

Proper Airing of Sandblasting Rooms is also crucial. There are three different options available to achieve this:

        1. Down draft ventilation
        2. End to MID ventilation
        3. Cross draft ventilation

The best ventilation method depends on the definite abrasive being used in the blast room.

ventilation method

Cross draft ventilation is very popular because of its affordability. It’s also important to keep in mind that the calculation for the dust collector size is calculated by the width of room times the height of room times the cross-sectional airspeed in feet per minute equals the total airflow in cubic feet per minute. The reclaim system also adds the air volume to the dust collector. The mechanical screw floor — with a belt and bucket elevator, rotary scalping drum, and air-wash separator — is the most competent reclaim floor system.

Also It is important to consider the ROI (return on investment) when building a blast room facility. The amount of blasting done over a given phase and the number of employees wanted both will persuade blast room decision-making. In addition, selecting the proper abrasive requires a thorough consideration of all of the parts that will be blasted. For instance, mineral abrasives break down faster than steel grit abrasives but allow for greater suppleness for various blasting needs. Disposal costs also need to be factored in and can differ greatly depending on material and volume.

Design and sections of sandblast Room

Dust collection systems are critical sections in sandblast rooms. In these days, reverse pulse cartridge dust collectors are standard since they attribute a consistent exhaust motor that fetches air out of the space and entraps it in filters. These collectors also have a strengthened pleated paper, which augment filter competence and decreases the size obligations of facility dust collection systems. Proper maintenance, for instance irregularly removing the dust on the cartridge, is also significant. Nevertheless some modern technology permits for self-cleaning by means of brief, reversed airflow. Pulse-sensing technology can distinguish pressure between clean and dirty sides of filters. Dust collectors are required to generate 50 feet per minute of airflow through the corral.

Components of sandblast Room

Whether you need to take out abrasive material from the inside of a tank car or smaller containers, vacuum recovery should be incorporated in your plan. Well-organized catching of the media for delivery to a recovery point and consistent transportation of the media to a cleaner area is significant for proper recital.

Manufacturers and distributors of abrasive systems often present a variety of recovery solutions for full or partial floor area installations. Because there are no moving parts, pneumatic recovery systems work well with light media for instance plastic, agriculture, aluminum oxide and glass beads. The mechanical floor consent to lower purchase and installation costs and utilizes pneumatic power; it also attributes a ladder-like pact of steel vanes for power.

Screw floors are generally used for steel grit and shot. Though they are pricier and need more quarry, they are paramount at moving the heaviest abrasives. Sweep-in systems assent periodic shutdowns for onslaught and can be ideal for intermittent blasting needs. These floors utilize rocking technology to move abrasives and dust to a crossover pan.

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Stone shot blasting machine assembly and testing photos at our workshop for our Turkey customers.

Near the Chinese New Year, the assembly and testing of a stone shot blasting machine has just been completed in our factory. This stone shot blasting machine is mainly equipped with the following configuration:
1. This stone shot blasting machine is equipped with 6 shot blasting machines, which are distributed around the blasting chamber, Which can blasting 6 faces of stone at time.
2. Equipped with pre-heating system, the stone can be shot blasted directly after heating.
3. Equipped with roller brush system and blower system, which can effectively clean the steel grit existing on the stone surface after shot blasting.
4. Equipped with Siemens touch screen, Schneider Electric.

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stone-shot-blasting-machine-2

Except that the large shot blasting machine cannot be assembled in our factory, for other machines we will assembly and testing in our factory before shipping that saving customers installation time and avoiding some problems during installation.
If you have any questions about shot blasting machine, please feel free to contact us. info@qgmagroup.com

Abrasive Recovery and cleaning system for sandblasting room

Recirculation and cleaning the abrasive shot is required to maintain a consistent cleaning operation.  In conventional shot blasting equipment after the shot hits the part the abrasive falls into the collection hopper under the machine.

The shot is then carried by gravity or screw conveyor to a bucket elevator. The elevator carries the shot, removed oxides and other contaminates to an air wash separator located in the upper portion of the machine. A combination of baffles, strainers and plates separate these contaminates which are ineffective during the shot blast operation. The cleaned abrasive is contained in an upper hopper (feeding-box) and is subsequently fed into the shot turbine by gravity.

The recirculating and cleaning capacity of the abrasive in each machine is related to the shot blasting power used for the turbines. An incorrectly sized system will cause premature wear to the machine and decrease overall shot blasting effectiveness and shot consumption.

Blast Cabinet

The machine cabinet contains dust and abrasive. A machine mounted dust collector, reduces air pressure inside the machine thereby preventing dust from escaping into the shop environment. Material access openings in the entrance and exit of the shot blaster must be designed and protected to prevent abrasive spillage.

Cabinets are built from low carbon steel with an inner shell made of abrasive resistant materials including high strength alloy plates and thick rubber compounds. In the areas that are subject to direct high velocity shot, alloy steel plates (64 RC hardness) are used which have much more abrasion resistance than other more commonly used materials like manganese steel.

Dust collector system

Dust produced during shot blasting is withdrawn from the machinery cabinet and continuously recirculating abrasive by a dust collector. Typical dust collector design uses baffle filters or cartridges.

The dust collector not only evacuates dust within the machine but also keeps the surrounding area clean and dust free. Changes in airflow will reduce collector efficiency and therefore result in lower dust extraction, loss of the cleaning power, and contribute to dust in the immediate production area. A properly designed and sized dust collector is therefore critical to the ongoing performance of the shot blasting System.

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Operating cost elements – wheel and airblast systems

  • Primary heads – Wheelblast
  • Electricity (total connected load x cost of power)
  • Media consumption / replenishment (total media flow x breakdown rate)
  • Cost of wheel parts – wheel parts
  • Cabinet and other component wear – liners, bearings, elevator belt & buckets, dust collector cartridges etc.
  • Wear on work handling arrangement components – table, rollers, belts etc.
  • Primary heads – Airblast
  • Electricity (total connected load x cost of power) – to operate compressor
  • Media consumption / replenishment (total media flow x breakdown rate)
  • Cost of wear parts – nozzle, hoses, tank valves etc.
  • Cabinet and other component wear – liners, bearings, elevator belt & buckets, dust collector cartridges etc.
  • Wear on work handling arrangement components – table, rollers, belts etc.
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Process parameters affecting blast quality

  • Initial condition of the component – material and contamination
  • Velocity of abrasive
  • Size (and shape) of abrasive
  • Hardness of abrasive
  • Blast wheel location
  • Travel speed of part through the machine (cycle time / exposure time)

Follow the path of abrasive:

  • Regular inspection is essential
  • Commonly blamed on the manufacturer
  • Quality of machine manufacture (cabinet design, lining etc.) does play a role
  • Common issues: leakage, noise, media consumption
  • Machine designs / controls are not intuitive to prompt maintenance

Saves on operating cost if taken seriously

blast wheel

Wheel parts and hot spots

Wheel Elements:

blast wheel

Hot Spot:

blast wheel 2

Power Requirement of Wheel and Air systems

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For abrasive flow of 2100 Lbs per minute

  • 21 operators
  • ½” nozzles
  • Compressed air consumption 350ft³/min

per nozzle

  • Compressor power 1400 kW

OR

4 wheels 20 HP each

80 HP (60 KW)

Energy factor 24 !!!

Advantages:

•    Velocity of shot easily controlled through wheel speed.

•    High flow rate of abrasive will provide high production.

•    Economical – one wheel can throw 300 lbs per minute with a 15 HP

wheel equal to five 3/8” nozzles at direct pressure at 80 psi at a

power requirement of 190 HP.

•    Self contained unit does not require a compressor.

Disadvantages:

•    Can only use metallic media.

•    Can damage delicate parts.

•    Not good for localized peening.

•    Greater abrasive consumption.