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How to work the shot blasting cleaning machine for the inner wall of large diameter steel pipe

Author: admin Source: This station Time: 10:21, June 8, 2015
Inner wall of large diameter steel pipe Shot blasting cleaning machine It has high efficiency and large area. The utility model is characterized in that: the utility model comprises a roller carrier, an end shield and a bracket are arranged on both sides of the roller frame, the end shield and the bracket on each side are jointly installed with a shot blasting expansion frame, the inner parts of the shot blasting expansion frame on both sides are respectively provided with a shot suction pipe and a shot feeding pipe, the suction end of the shot suction pipe is respectively connected with a suction nozzle, and the sending end part of the shot feeding pipe is connected with a shot blasting device The sending end of the shot suction pipe is respectively connected with a cyclone separator, the top of the separator is respectively connected with a dust collector through a pipe, the lower part of the separator is respectively connected with a storage box, the discharge pipe of the storage box is respectively connected with the air outlet pipe of the fan through a valve, and the air outlet pipe is respectively connected with the suction end of the shot feeding pipe.
In recent years, with the continuous development of China's oil, natural gas and other industries
The role of oil and natural gas in the national economy is growing
It has brought opportunities to the development of pipeline transportation industry
The quality requirement of steel pipe for road transportation is higher and higher
too Sandblasting The inner wall of steel pipe can not be fully cleaned by manual means
To meet the requirements of productivity and internal surface cleaning quality, we developed a
High efficiency, environmental protection, advanced shot blasting machine for inner wall of steel pipe has become the era
Demand. Through many experiments and improvements, our company has successfully developed
Efficient shot blasting equipment for inner wall of steel pipe. The machine will be transported at high speed
The moving projectile stream is ejected to the inner surface of the steel pipe, and the inner surface of the steel pipe is cleaned
The oxide and its surface appendages, and by making its surface plastic
It can effectively improve the strength and surface corrosion resistance of the pipeline
The overall quality and service life of the pipeline are improved.
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Main technical specifications
Size of cleaning steel pipe:
Length: 8000-12000mm;
Diameter: 1000-2200mm.
Quality standard for cleaning inner wall of steel pipe:
Surface roughness: 50-95 μ m;
Surface cleaning grade: a-bsa2.5.
Hydraulic system and mobile car:
Hydraulic driving power: 110KW;
Power of mobile car: 1.1KW;
Moving speed: 0.5 ~ 8m / min (frequency conversion).
Shot blaster:
Speed: 2800r / M;
Shot blasting amount: 800kg / min;
Ejection speed: 80m / s.
Ventilation and dust removal system:
A. Air volume of shot blasting room: 290000m3 / h;
Dust removal method: Inertia + bag dust removal;
B. Air volume of separator: 2800m3 / h;
Dust removal method: bag filter.
Total power: about 380kW.
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Composition and structural characteristics
The shot blasting cleaning machine for the inner wall of steel pipe consists of shot blasting device, front and rear sealing chamber, and
Hoist, separator, belt conveyor, workpiece rotation and travel mechanism
Ventilation and dust removal system, hydraulic control system, pneumatic control system and
Electrical control system and other components (Fig. 1).
(1) Special shot blasting device for inner wall
Shot blasting machine is the core part of the equipment, which consists of the following main parts
Components: shot wheel, directional sleeve, blade, impeller and impeller drive plate
Spindle, etc. The shot blasting device has the advantages of simple structure, convenient maintenance and shot blasting quantity
And so on.
The shot blasting machine is driven by hydraulic motor. The shot blasting quantity can be adjusted
Refer to the pressure gauge of hydraulic system.
(2) Front and rear seal chamber
After the workpiece is placed on the rotary table, the rotary mechanism and the front
The sealing chamber moves to the right, so that both ends of the steel pipe enter into the sealing chamber. So,
The front and rear sealing chambers form a sealing system together with the steel pipe. In the seal
The joint of chamber and steel pipe is sealed with polyurethane sealing ring, which can effectively avoid
Avoid the occurrence of projectile and dust overflow. The seal chamber is made of section steel and
The steel plate is welded to ensure enough rigidity and strength.
The top of the front sealing chamber is provided with an air outlet, and the strong suction will
After shot blasting, the shot is sucked into the front sealing chamber and settled to the bottom of the chamber, and then
Into the belt; at the same time, the dust is sucked into the dust collector.
(3) Belt conveyor
The equipment uses belt conveyor to transport pellets. This machine is the root
A new type of belt conveyor is designed according to the use characteristics of pellets. skin
The belt conveyor is composed of head wheel, tail wheel, upper roller, lower roller and conveyor belt.
Development and application of shot blasting machine for inner wall of steel pipe