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Tunnel type shot blasting machine is a non-standard shot blasting machine that is according to workpieces information to design. The tunnel type shot blasting machine is mainly used for surface treatment of large steel structures to achieve the removal of rust, old patent leather, and old putty, etc.

For large workpieces, it can use a double electric hoist to lift the workpieces through the shot blasting chamber, and the workpieces can be shot blasted. The tunnel type shot blasting machine adopts imported PLC control and has automatic/manual control mode, the whole hook through the type of shot blasting machine to achieve automatic fault detection.

Tunnel Type Shot Blasting Machine Basic Specification

BLASTING CHAMBER:

Blast wheel layout 3-D dynamic simulation design, ensures optimal shot blasting angle and distance, treat the object items on all sides with high-quality surface appearance but without overlapped and dead zone.

Shot blasting chamber with ZGMn13 steel guard plate, long service life.

Six layers of protection curtain to prevent the shot balls spatter out during blast cleaning. The curtain layers are natural rubber material with leaf spring which can automatically reset, ensure the sealing of the machine.

High chrome wear-resistant cast iron grate guard plate which protects the screw conveyor and prevents big clump to get into the hopper damaging the bottom screw conveyor.

BUCKET ELEVATOR ADVANTAGES:

Bucket elevator is composed of cycloidal pin gear reducer, upper and lower roller, transmission belt, bucket, closed abrasive storage hopper and tensioner. The feed port of the bucket elevator is connected with the crosswise screw conveyor, and the discharge port is connected with the screw roller sieve of the separator. In order to ensure that the belt conveyor does not skid on the surface of the drum during the bucket elevator works, the roller surface is welded with steel plates into a cage shape.

SEPARATOR ADVANTAGES:

tunnel type shot blasting machine uses advanced BE full-curtain type separator which is composed of separator part, cylinder screen, screw, hopper, and Manual valve. This separator absorbs American technology and developed by our company which is the newest style separator of our company at present.

The separator's working principle: The used abrasive from the bucket elevator is delivered by the screw to the upper separation area. The screw separates it evenly in the separation area along with the separator, forms a pill sand flow curtain-like a waterfall. At the same time, the blower of dust collector separates the projectile, molding sand, metal oxide skin fragment, stave projectile and dust in the flowing curtain through convulsion

on separator gusty area and using gravity dry separation way which will flow in the bunker after the second filtration by the bottom strainer and store up for the next circulation. The best separation effect of separator depends on the adjustment of the flow control board position of dry separation area, the adjustment of adjustment board position on filtering panel, adjusting the reed valve wind amount of air hose to realize. It can get good separation effect if the adjustment is reasonable which can keep the separation efficiency above 99.5%.

As one of the most professional shot blasting equipment manufacturers in China, QINGGONG MACHINERY’s activity is the design, manufacture, sales of steel plate shot blasting and painting line, sandblasting room and punching machine and over more than 40 years of experience. RFQ today!

The main transmission of servo CNC turret punching machine is directly from drive servo motor, which retains the advantage of a simple and reliable structure as mechanical transmission, it features  high efficiency, energy saving, low noise, high accuracy, and can realize many processes like die-cutting, forming, beading, lettering and so on.

Features

Servo drive(it can be also called servo punch press  )

Direct driving structure

Sealed oil tank, prefect lubricating with lower temperature rising.

Turret

32 working stations

Material: 40Cr

Pair machining in large scale machine center.

Adopt Amada standard long tools.

Super high accuracy position pin ensures the aligment of punch and die

Auto-index

Worm and gear driving structure ensures the accuracy of double direction.

Singal synchronous driving belt ensures the accuracy of punch and die.

Bushing

Each station has high accurate bushing.

40Cr material

International standard long toolings

Driving

T axis is driving by one servo motor with chains

C axis is driving by one servo motor with a belt.

Basic Specification

Mold distribution

As one of the most professional shot blasting machine manufacturers, QINGGONG MACHINERY’s activity is sales of shot blasting machine China and shot blasting supplies. If you want to know more details or want a quotation, just feel free to contact us!

On the preservation line, sheets and profiles are thoroughly blast cleaned and provided with a temporary corrosion protection coating. Along with the external transportation unit, the preservation line consists of a pass through blasting machine, a painting unit and a drying tunnel with its associated slat conveyor.

Typical plates widths can vary up to 2500mm, height can vary from 5mm to 1000mm, length can vary from 2000mm to 12000mm.

1. Workpiece conveyor system

The whole roller conveyor system adopts frequency control step-less speed regulation, is able to synchronous running, each department is capable of independent action.

Blast cabinet’ rollers are with special wear-resistant sleeves to prevent blasting abrasion.

Plate chain conveyor with "v" shaped structure, painted steel short-term exposure to avoid film damage.

2. Blasting cleaning

Workpiece detection (measure height) adopted world-famous brand photoelectric detection, workpiece width measurement device send a signal to PLC so as to

automatically adjust abrasive feeding valve opening number.

3. Abrasive cleaning up

First level: Brush+abrasive reclamation

Second level: high-pressure blower blow the workpiece twice one after another after blast cleaning

4. Abrasive reclamation system

Each of the abrasive reclamation system drive points equipped failure alarm function.

5. Dust collector system

Using HR4-48 Donaldson filter material cartridge dust collector, the dust removal efficiency ≥ 99.5%, dust emission is less than 30mg/M3.

6. Spray room

Adopting GRACO X45DL4 high-pressure Airless spraying pump, compression ratio 45:1, flow 38L/min,

Using a standard linear guide trolley, frequency conversion buffer on both ends of trolley stroke. Workpiece detection and transmission system separated from the spray gun set, paint mist interference-free, easy to clean paint scale.

7. Drying room

Adopt dielectric Heaters and hot air circulation principle so that the heat can be fully utilized.

Drying room temperature adjustable from 40℃ to 70℃

Plate chain conveyor systems increase the eccentrical wheels, which saved the problems of deviation and high rate failure.

8. Paint mist filtration devices and harmful gas purifier

This system has automatic explosion-proof alarm function for paint mist concentration. Adopt advanced cardboard to filter paint mist, it is maintenance-free within one year, using activated carbon for adsorption of harmful gases. After this system it will be in accordance with the air pollution emission standards. (Paint mist emission standard ≤ 120mg/M3, p-xylene: emissions concentrations ≤ 70mg/M3, the 15 meters height exhaust pipe allows the secondary emission rate is 1.0kg/h. ）

As one of the most professional shot blasting machine suppliers, QINGGONG MACHINERY’s activity is sales of shot blasting machine China and shot blasting supplies. If you want to know more details or want a quotation, just feel free to contact us!