Improve the working efficiency of pipelines through the operation of radial extrusion equipment

Radial extrusion equipment technology is one of the technologies for producing concrete and reinforced concrete drainage pipes. Mainly produces φ300~φ1200 small diameter pipes.

In recent years, with the vigorous development of my country's infrastructure and the continuous advancement of urbanization, the market demand for small-diameter drainage pipe networks has increased. With the acceleration of my country's industrial structural adjustment, labor-intensive to technology-intensive, my country has transformed from high energy consumption and high pollution to clean and environmentally friendly. The traditional centrifugal and suspension pipe-making technologies have outstanding shortcomings and cannot adapt to the changes in our country's situation. The society urgently needs an efficient and low-energy-consumption pipe-making technology and equipment to replace the traditional process.

Vertical radial extrusion pipe technology has many significant technical advantages such as high production efficiency, low labor intensity, high degree of automation, low production cost, and low environmental pollution. It has been recognized by domestic pipe manufacturing enterprises and has been promoted and applied.

The vertical radial extrusion pipe process mainly uses a radial extrusion pipe making machine as the main equipment, supplemented by automatic stirring equipment and a tie-type automatic reducing welding machine to complete the pipe making work.

According to the type of operation, radial pipe extrusion machine equipment is divided into four categories: mechanical system, electrical system, pneumatic system and hydraulic system.

The machine system mainly improves the working efficiency of the pipeline through the operation of various mechanical components; the electrical system mainly provides power for various electrical equipment to achieve intelligent control of the system; the pneumatic system mainly provides the work of pneumatic cylinders through air compressors; the hydraulic system mainly provides power for all hydraulic equipment.

Pipe mechanical equipment is an important structure in the entire pipe system equipment. It is mainly composed of a machine body, a power reducer, a feeding mechanism, a grinding mechanism, a mold changing turntable, an opening forming mechanism, molds and accessories.

This process adopts the vertical production method. The mold is perpendicular to the ground chassis. The pit is equipped with socket vibration and support rotation devices, and the pit is equipped with major devices such as pressure rise.

The radial extrusion pipe process uses semi-dry hard concrete. Through the extrusion forming head (Figure 1), the concrete inside the forming head is extruded according to the inner diameter of the pipe. During the extrusion process, the upper forming head rises at a certain speed to form, and the lower trimming head is extruded in the opposite direction and ground.

When the casing is produced by the radial extrusion process, the slope of the casing is relatively large. When the casing is extruded alone, the strength of the casing is difficult to guarantee. The forming of the casing must be supplemented by vibration. Generally, a small amount of water needs to be sprayed to adjust the plasticity of the casing concrete.