A pump is a mechanical device that transports fluid from a low-pressure area to a high-pressure area. Its principle is to use mechanical energy to compress fluid and promote fluid flow. There are many types of pumps, the common ones are centrifugal pumps, plunger pumps, screw pumps, etc.
A centrifugal pump is a common type of pump that uses centrifugal force to transport fluid from a low-pressure area to a high-pressure area. The centrifugal pump is composed of impeller, pump casing, inlet and outlet flanges and other parts. When the pump starts, the motor drives the impeller to rotate. The fluid is sucked into the pump casing and then pushed to rotate by the impeller. The fluid is compressed under the centrifugal force of the impeller and flows to the outlet flange. The advantages of centrifugal pumps are simple structure and easy maintenance, but their delivery flow is affected by pressure and viscosity.
A plunger pump is a pump that transports fluid from a low-pressure area to a high-pressure area through the reciprocating motion of a plunger. The plunger pump consists of a plunger, a pump body, inlet and outlet valves and other parts. When the plunger moves forward, the fluid in the pump body is compressed and flows to the outlet valve. The advantage of the plunger pump is stable delivery flow, but its structure is complex and maintenance is difficult.
A screw pump is a pump that transports fluid from a low-pressure area to a high-pressure area through the rotation of a screw. The screw pump consists of a screw, pump body, inlet and outlet flanges and other parts. When the screw rotates, the fluid is sucked into the pump body and then pushed to rotate by the screw. The fluid is compressed under the action of the screw and flows to the outlet flange. The advantages of the screw pump are large flow rate and stable pressure, but its structure is complex and maintenance is difficult.
In general, the principle of a pump is to use mechanical energy to compress fluid and promote flow. Different types of pumps have different working principles, advantages and disadvantages. When choosing a suitable pump, you need to consider factors such as the nature of the fluid, the delivery distance, and the delivery flow rate. When using the pump, you need to pay attention to maintenance and regularly check the operating status of the pump to ensure the normal operation of the pump.
