Tunnel Type Roller Conveyor Shot Blasting Machine
Product Introduction

Roller pass shot blasting machine: In the process of shot blasting cleaning, steel structural parts are sent into the shot blasting chamber by an electrically controlled and adjustable conveying roller. The steel shots ejected from the shot blaster impact on the workpiece, so that the oxide skin, rust layer and dirt on the workpiece fall off rapidly, and the steel surface will obtain a smooth surface with a certain roughness; the feed roller and discharge roller used for loading and unloading the workpiece; When shot blasting, steel shot from this process fall down to the bottom of the shot blasting chamber then the steel shot is transported to the bottom of the elevator by the screw conveyor, and then to the top of the sorter by the elevator belt assembly respectively. The sorter is powered by the dust collector. The purpose is to separate broken steel shot and dust from the shot blasting processing. Through the sorting device, qualified steel shot will come directly into the storage bin above the blasting machine, and ready to be used again. Shattered Steel pellets will be separated again and dropped into the waste cylinder through the sand pipe. Dust is directly sucked away by the dust collector fan and adsorbed in the filter dust collector; finally dust falls into the dust recovery box that needs to be cleaned up regularly.


For all kinds of steel materials, such as steel plate, steel, steel beam, section steel, steel pipe and steel castings, oxide scale removal, cleaning and pretreatment are carried out in a continuous way.

Outstanding Advantages
  • Using Wear-resistant rubber track+manganese plate;
  • Using advanced wet dust collector system;
  • Using crushed shot secondary separation system;
  • Using high performance P series impeller head (die steel CNC machining + vacuum heat treatment);
  • Using steel shot flow semi-automatic control system;
  • Using roller conveying system with Frequency Conversion Speed Regulation
  • Optional: Magnetic sorting system + spiral pusher sorting + air separation sorting system;
Contrast Of Shot Blasting Products
Before shot blasting
After shot blasting
Working Principle
Mayflay offers a range of roller conveyors from small simple machines to construction blasters, heavy duty machines and complete preservation lines. Mayflay’s extensive experience in this field caters for all component sizes as well as customer-specific solutions. Working speeds from 0.5 m/min for a small roller conveyor machine to 20m/min for a heavy skew roll machine are achievable. Roller conveyor range demonstrates the highest performance variants of this machine type for blasting sheet metal and profiles. The main difference of this machine to others offered in the marketplace is the angled arrangement of the shot blast wheels on the top of the machine. This arrangement reduces the build-up of abrasive on the sections of longer profiles. By using this method a significantly larger percentage of the blasting energy is used on the main task, i.e. De-rusting and scale removal from sheet metal and profiles, and avoids creating piles of abrasive.
Product Description
1Shot blaster

1. The blasting machine motor adopts ABB with excellent and controllable manufacturing process, good sealing, good dynamic balance and stable and reliable performance advantages.

2. The blasting machine outside shell is made of 10mm high-quality carbon steel plate by laser cutting and precision bending. The shell is welded by special fixture to ensure the parallelism of the two sides of the blasting machine shell and the concentricty of the hole.

3. The top guard plate is precision machined by die steel CNC, and the machining precision is ±0.01. After machining, low pressure vacuum heat treatment is adopted.

4. End guard plate is made of high wear-resistant manganese 13 steel plate by laser cutting.

5. The side guard plate is precision machined by die steel CNC, and the machining precision is ±0.01. After machining, low pressure vacuum heat treatment is adopted.

6. The Orientation sleeve is precision machined by die steel CNC, and the machining precision is ±0.01, with uniform wear and good balance. After machining, low pressure vacuum heat treatment is adopted.

7. The Pill wheel is precision machined by die steel CNC, and the machining precision is ±0.01, with uniform wear and good balance. After machining, low pressure vacuum heat treatment is adopted.。

8. The blades is precision machined by die steel CNC, and the machining precision is ±0.01, with uniform wear and good balance. After machining, low pressure vacuum heat treatment is adopted.

9. The impeller is precisely machined with CNC die steel, and the machined precision is (+0.01). The surface hardness of the impeller can reach HRC58-62 by vacuum heat treatment under low pressure after machined.

10. The service life of the above vulnerable parts is more than three times as long as that of the casting products (shot material: less than S460 (1.5mm cast steel shot), hardness: HRC40-50).

2 Elevator system

1. The elevator is used to lift the steel shots recovered by the screw pusher into the separator and silo.

2.The elevator is made of precisely welded steel plates and can be disassembled in segments. Maintenance and inspection windows are provided for easy maintenance.

3. A drive and deceleration motor is located at the top of the hoist, which acts as the power source of the elevator.

4. The system consists of two precision-machined hubs, one hoist case, one high-performance wear-resistant belt and several alloy hoists formed by one stamping process.

3Sorting system

1. A set of screen separator is connected to the elevator, which is located at the upper end of the magnetic separator. Fine materials are filtered and separated through the screen and then fed into the magnetic separator. Coarse materials and impurities are spirally conveyed to the tail port through the screen and discharged from the port discharge pipe.

2. Used for fine separation of qualified steel shots, crushed shots and dust to ensure the uniformity of abrasives.

3. Welded structure, with a number of well-designed compartments inside, for wind-guided flow. The front is an open overhaul door for daily observation and maintenance. An air inlet is arranged on the door to provide air medium for dust separation.

4. Multipole baffle structure, adjustable. Used to adjust the uniformity of sand curtain.

5. Two static magnets are installed on the upper and lower sides to finely separate the qualified pellets and the crushed steel pellets to ensure the uniformity of the medium used for shot blasting.

6. The qualified pellets are flowed through the silo for storage and ready for reuse.

4Grating induction system

1. Two sets of grating induction devices are installed at the inlet and outlet ports respectively. The grating density can be selected according to the size of the workpiece and used in pairs.

2. When the workpiece enters the shot blasting chamber, the grating at the inlet and outlet will induce the feeding workpiece, and the shot blaster will start delayed. The grating induction device is installed at the outlet. When the grating induction of the feeding and discharging gratings reaches no workpiece, the flow valve will be automatically closed immediately to prevent empty throwing.

5A Conveying System of Feeding Roller +Shot Blasting Roller+Discharging Roller

1. The workpiece conveying system of the whole production line adopts stepless frequency conversion speed regulation. The conveying system consists of input roller, shot blasting chamber roller and output roller.

2. Input and output roller shafts are processed by a whole lathe after welding of high quality carbon steel seamless steel pipe and quenched and tempered shaft joint.

3. The rolls in the shot blasting chamber are equipped with wear-resistant sheaths of high chromium-molybdenum special iron which can be easily replaced.

4. The roller distance is 600 mm. The whole line adopts frequency conversion speed regulation, which can convey workpiece quickly and slowly.

6Electrical control cabinet

1. Using Siemens PLC and touch screen

2. Using Delta or BEST converters

3. Use CHINT or Schneider brand low-voltage electrical components

4. Using shot blasting time controller

5. Using ADE aerodynamic components

6. Flow detection ammeter

7. 1 lamp

8. 1 set of special constant temperature air conditioning (optional)

Parameter Introduction

Mayflay Roller Conveyor Shot Blasting Machine Parameter Sheet+ Configuration Sheet

No. Name Mayflay Roller Conveyor Shot Blasting Machine
1 Model MTR-1040P11-4 MTR-1040Q11-4
2 Sorting Configuration Air Sorting
3 Application Shot Blasting Cleaning and Rust Removal for Large Workpieces, Profiles/Steel
4 Shot Blaster Type CNC Casting
5 Shot Blaster Qt 4 Pcs
6 Shot Blaster Motor Power 11KW
7 Drum spacing φ80*300
8 9Loading(without tooling) ≤1 ton
9 11Size of single workpiece(W*H*L) ≤1000*400*4600mm
10 Max. Size of entrance (W*H) mm 1000*400mm
11 Semi-Automatic Flow Valves 4 sets
12 Automatic Flow Valves Optional
13 Filter Dust Collectors DC-12(11KW)
14 Wet Dust Collector Optional
15 Air Volume (cubic / H) ≤18000
16 Outward Size Of Machine (L*W*H)mm 8600*3900*6536mm
17 Machine Size With Dust Collector (L*W*H)mm 8600*6084*6536mm
18 Total Power + Dust Collector ≤55.8KW+11KW
19 Total Weight Bare Machine + Dust Collector 15 tons+2 tons

Standard Configuration:

1 Electrical cabinet: This machine standard is equipped with radiation fan, optional air conditioning.
2 Programmable controller plc: Siemens (according to customer requirements, other brands can be selected)
3 Touch screen: Siemens (other brands can be selected according to customer requirements)
4 Frequency converter: Best (other brands can be selected according to customer requirements)
5 Power supply voltage: Ac380v three-phase five-wire
6 Low voltage electrical appliances: CHINT (other brands can be selected according to customer requirements)
7 Pneumatic components: ARITAC (other brands can be selected according to customer requirements)
8 Wires and cables
9 Mayflay can also customize various non-standard shot blasting machines according to your requirements.
Online MessageOnline Message
Contact Mailbox Contact Mailbox