Shear Pump

The shear pump has the following functions:

1. The shear pump can greatly improve the hydration degree of the soil particles. The degree of dispersion and hydration of the soil-moving particles in the water depends on: the electrolyte content in the water, time, humidity, and the number and concentration of replaceable cations on the surface. Under the same other conditions, the use of a shear pump can greatly accelerate the dispersion of soil-moving particles, thereby greatly accelerating the hydration progress of the particles, and making the mud have good rheology. Especially in marine drilling, the effect of preparing sea cement slurry with attapulgite and haicang stone powder is better. The use of shear pump can save more than 30% of soil removal.

2. The shear pump can shear dilution and hydrate the polymer. The high molecular weight polymer used in the mud has a relatively high molecular weight, and it is not easy to be hydrated when directly added. Therefore, the high molecular polymer needs to be pre-sheared. The shear pump can provide high shear efficiency and accelerate the dilution and hydration process of the polymer. ,

3. The shear pump can provide higher displacement and head, which can meet the requirements of preparation and mud processing.

Working principle of shear pump:

The shear pump consists of an impeller, a volute, a support, a packing box, a drive shaft, a pulley, a combined belt, a motor and a guard. The impeller of the shear pump is different from the impeller of the general water pump, and the structure is more complicated. It is the core component of the shear pump and has high shear efficiency. The impeller is mainly composed of five parts: axial turbine, storage tank, pump wheel, pressurized cabin and shear plate. Made of stainless steel as a whole, the structure is very compact. The axial flow turbine provides fluid with a certain displacement and energy for the pump wheel and the storage tank. 50% of the fluid is discharged into the volute through the pump wheel, and 50% is absorbed by the storage tank. The unique design of the pressurized cabin enables the fluid in the storage cabin to have a certain amount of energy. The fluid discharged through the pump wheel flows parallel to the shear plate and has a higher flow rate. The fluid sucked in by the storage tank is sprayed perpendicular to the shear plate through several nozzles. After the jet fluid is mixed with the fluid discharged from the pump wheel, it impacts the serrations of the outer circle of the shearing plate at a higher flow rate, and the serrations of the shearing plate rotating at a high speed shear the fluid again. Therefore, the fluid flowing through the impeller is subjected to multiple shearing effects.

Data & Specifications