Cement Injection Grouting Machine

The cement injection grouting machine (model BW150) is a professional civil engineering construction equipment, mainly used for projects such as building foundation reinforcement, stratum grouting and crack repair. The equipment adopts a three-cylinder plunger design, powered by a 7.5KW motor, with an operating speed of 1450r/min, and can achieve a maximum grouting flow of 150L/min. The overall equipment is a rectangular structure (size 1840×795×995mm), weighs 560kg, and is made of wear-resistant steel. Its core components include three grouting cylinders, a feeding system, a discharging system, a power transmission device and a control system. The working principle is to evenly and continuously transport the cement slurry to the designated position through the alternating movement of the three plunger cylinders to achieve continuous and stable grouting operations.

Three-cylinder Delivery Structure
The cement injection grouting pump uses three cylinders with a diameter of 70 mm and a stroke of 70 mm, and each cylinder reciprocates alternately. When one cylinder is in the suction state, the other two cylinders are still in the discharge state, which ensures the stability of flow and pressure, reduces the pressure pulsation during pumping, and achieves a smooth flow output. Pressure pulsation refers to the periodic pressure fluctuation caused by the intermittent movement of the pump during the flow of liquid. This unstable pressure will cause the flow rate of the slurry to change, affect the uniformity of grouting, and even cause pipeline blockage. This design provides a stable maximum flow output of 150 liters/minute, ensuring that the uniform grouting speed and pressure can be maintained under long-term operation, avoiding the impact of excessive pulsation on the quality of the project.

Dual Power Source
The motor supports the replacement of electric drive with diesel engine. This dual power source design enables the equipment to adapt to the needs of different construction environments. Motors can be used in sites with city power supply to reduce operating costs, and diesel engines can be used in remote or temporary sites to ensure construction continuity.

Strong Power
The BW150 injection grouting machine uses a 7.5-kilowatt high-power motor with an operating speed of 1450 rpm. This high-power power configuration can ensure that the equipment can maintain stable operation under high-load working conditions. The strong power output not only provides continuous and stable grouting pressure, so that the slurry can be injected into the construction area evenly and efficiently, but also can cope with slurries of different viscosities, avoiding poor transportation caused by excessively thick slurry, and meeting the grouting needs of various projects.

Pipeline System Optimization
The equipment is equipped with a 50 mm diameter suction pipe and a 32 mm diameter slurry discharge pipe, forming a reasonable pressure gradient. The larger suction pipe diameter ensures that the slurry can quickly enter the pump body to avoid pressure instability caused by insufficient suction; while the smaller discharge pipe diameter provides the necessary injection pressure, so that the slurry can be fully filled into the construction gap. This pipeline design effectively reduces the risk of blockage and improves construction continuity. It has obvious advantages in projects that require high-pressure grouting, such as foundation reinforcement and crack repair.

Foundation Reinforcement
The cement injection grouting machine is used to inject cement slurry into the soil layer to fill the voids in the soil, thereby increasing the density and bearing capacity of the foundation. This reinforcement method can effectively prevent foundation settlement and uneven deformation, ensure the safety and stability of the building, and is particularly suitable for foundation reinforcement of high-rise buildings and heavy structures.

Tunnel Support and Mine Reinforcement
In tunnel construction and mining, cement injection grouting machines are used to inject slurry into cracks and voids in the surrounding rock to form a protective layer, enhance the stability of the rock mass, and prevent collapse.

Waterproofing of Underground Structures
In the construction of underground structures such as subways and underground garages, cement injection grouting machines are used to inject waterproof cement slurry layers to prevent groundwater leakage. This waterproof grouting can effectively seal cracks and joints in the structure, form a solid waterproof barrier, improve the waterproof performance of the building, and extend its service life.

Crack Repair
In the repair of bridges, dams, and old buildings, cement injection grouting machines are used to inject cement slurry into the cracks of the structure to restore its strength and stability. By filling small cracks in the structure, grouting can effectively prevent crack expansion and improve the overall compression and bending resistance of the structure, thereby extending the service life of the building.