First, the structure of the screw pump
The screw pump is a positive displacement pump with a unique structure, which is widely used in the industrial field. For its structure, many Friends may not know very well, let me introduce to you below:
Generally speaking, the main components of a screw pump are the motor, pump body, rubber stator and eccentric screw rotor. There are differences in composition. Among them, the rotor and stator are the core components, and other structural components are determined by the product model. Taking the commonly used G-type single screw pump as an example, its structural components include: discharge body, tie rod, stator, Screw shaft, universal joint, feed body, connecting shaft, packing seat, packing gland, bearing seat, bearing, transmission shaft, bearing cap, coupling, chassis, motor, etc.
Second, what is the working principle of the screw pump?
After talking about the structure of the screw pump, let’s take a look at the working principle of the screw pump. The core components of the screw pump are the rotor (also known as the screw) and the stator (also known as the elastic bushing), which also mainly rely on these two parts to work. The specific working principle is:
When the screw pump is running, the The motor drives the screw (rotor) and makes a rotary motion in the stator (elastic bushing). The rotor (screw) and the stator (elastic bushing) form several sealed cavities that are not connected to each other. The cavity moves in the axial direction from the suction end to the discharge end, and the medium continuously flows from the suction end to the discharge end in the cavity.
The screw of the screw pump can be one, or two, three, or more. If it is a multi-screw pump, there is generally one driving screw and multiple driven screws that mesh with it. When the active screw rotates, the closed volume of the screw pump increases the pressure of the screw pump under the compression of the screw teeth, and transfers along the axial direction, driving the driven screw to rotate. Because the screw rotates at the same speed, the flow rate of the liquid outflow is also average.
Three, the working characteristics of the screw pump
The screw pump mainly has the following characteristics: simple structure, safe and reliable use, convenient use and maintenance, liquid discharge Continuous average, stable pressure, low noise and vibration, and self-priming ability, but screw processing is more troublesome.
