Brief introduction

Three screw pump is an important kind of non abrasive oil-based fluid transmission equipment with certain lubricity. Because of its stable flow, small pressure fluctuation, high cost performance, and no shear transmission of medium with low viscosity, it is widely used in various industrial processes, also known as the positive displacement three screw pump, three blade rotor pump and three-axis transmission pump.

Xinglong three-screw pump is a positive displacement pump, which transmits liquid through a cavity with a certain geometry formed by sealing between the meshing pairs (main and subordinate rods and bushes). The main components of the pump include three rotating screws and a three hole bush wrapped around its outer circle contour. The driving screw is driven by the driving machine to rotate. The two driven screws are driven by the liquid film between the main rod and the driving screw to rotate passively. The driving screw and the driven screw are both working in the closely matched Bush hole. Therefore, between the pump inlet and the outlet, the screw and the bush are separated by a certain number of bolts and bushes What is the shape of the conveying cavity. These closed cavities form a step-by-step boost pumping process from the pump inlet to the outlet as the screw rotates.

Xspf series three screw pump has internal bearing structure, and the bearing is lubricated by the pumped material during the working process. According to the fluid temperature, there are several mechanical schemes; the single end face mechanical seal scheme is suitable for the fluid temperature up to 80 ℃, and the metal bellows mechanical seal scheme is suitable for the fluid temperature up to 250 ℃.

The inlet and outlet flanges of xspf series three screw pump are designed on the same plane. Moreover, we have filters as accessory equipment. If customers have filtering requirements, they can be installed without removing any pipes. After the filter screen is blocked, it can be removed and cleaned.

The length of the fitting section of the screw and the Bush is close to 2 times of the screw lead, and the theoretical limit pressure difference can reach 25bar.

Xspf series three screw pump has two series: SPF20 and SPF40. The Arabic numerals above represent that the helix angle of rise of the pump at 1450r / min is the volume flow of the fluid delivered by the 46 ° theoretical pump (unit: L / min).

The three screw pump of the same model can change the screw angle to change the differential requirements of different delivery flow, such as 36, 46, 54, 56 degrees.

Advantages

More economical - very low life cycle cost

Reliability - high hardness nitriding steel for screw

Non pulsating delivery - the medium is stable and non pulsating during pumping

Easy to maintain - when replacing major parts (including screws and bushings), the pipeline does not need to be removed

Flexibility - low inlet pressure and wide allowable speed range

Low noise - working principle virtually eliminates pressure fluctuations

Self absorption - normally no forced feeding device or equipment is required

For you to solve transport requirements include

The maximum flow can reach 48l / min

Output pressure up to 25bar

The viscosity range of the material is usually 1 to 150 CST

Pumping temperature up to 250 ℃

High viscosity materials can be transported by heating

The standard configuration is mechanical seal, optional with metal bellows mechanical seal

Strict quality standards and test procedures ensure that you get the best performance three screw pump. We continue to provide after-sales technical support (4008055600) to ensure the best performance under various service conditions.