Centrifugal pump is composed of many parts.
According to the working state of each part during operation, it can be roughly
divided into three categories
Type: rotating part, fixed part J4: and
handover part. Taking the single-stage single suction horizontal centrifugal
pump as an example, as shown in Fig. 2.4, the function, composition, structure
and material of each part are introduced.
1 impeller (also known as working
wheel)
The drum is the main part of the water pump, and even the core part of
the water pump. The centrifugal system relies on the high-speed rotation of the
impeller
Water is used to realize energy conversion.
The N1 wheel rubber
of the centrifugal pump is composed of two circular cover plates. There is a gap
between the cover plates. 1: the bent blade will be two in front and back
The
two cover plates are connected together, and the space groove surrounded by the
two adjacent blades and the front and rear cover plates is generally called the
flow of water.
(2) accumulated glaze
The beam rib is used to rotate the
pump impeller. It receives power from the prime mover (motor) and drives the
impeller to rotate. Thus, the pump
The shaft shall have sufficient torsional
strength and rigidity, and its deflection shall not exceed the allowable value;
The working speed cannot be close to resonance
The critical speed of the
phenomenon. Common materials of pump shaft are carbon steel and stainless
steel.
3. Key
The impeller and the pump rail are connected by keys. The
chain is commonly known as the connecting piece of rotating parts. 3 in Fig. 2.4
is a centrifugal pump
The usually used flat key can only transmit torque and
cannot fix the axial position of the impeller. In large and medium-sized fruits,
the leaf
The axial position of the wheel is usually located by the shaft
sleeve and the nut of the shaft sleeve.
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