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What is the difference between a self-priming pump and an ejector pump?
2023/06/29
Jet pump is also a kind of self-priming pump, as long as the pump with self-priming function can be called self-priming pump, there are self-priming vortex pump, self-priming centrifugal pump, self-priming jet pump, etc.
In terms of structure, the pump head of the ejector pump has an extra fluid guide, the pump cavity is relatively large compared to the self-priming pump, and the impeller material is plastic steel, while the impeller material of the self-priming pump is generally copper.
2. In terms of use, both with suction range, jet pumps are generally used in places where the water has a slight sand content, self-priming pump impeller is more compact, can only pump clear water, the water contains sand, then the impeller will wear.
3. From the point of view of silence, self-priming pumps are better, jet pumps are a stream of water, the noise is large
Jet pump is the use of fluid flow is the transformation of energy to achieve the purpose of transport. Working principle: When working, water vapor is ejected from the nozzle at high pressure with a high flow rate, so that the space around it forms a certain negative pressure, bringing low-pressure gas or steam into the high-speed fluid, the inhaled gas and water vapor mixed into the expanded tube, the rate gradually decreases, the static pressure thus increases, and finally discharged through the discharge outlet.
2023-06-29
The basic components of a centrifugal pump are a high-speed rotating impeller and a fixed worm-shaped pump casing. Usually centrifugal pumps have a number of (usually 4-12) backward curved vane impeller fastened to the pump shaft, and with the pump shaft driven by the motor for high-speed rotation.
The working principle of centrifugal pump
2023-06-29
After the centrifugal pump starts, the pump shaft will drive the impeller together for high-speed rotational movement, forcing the pre-filled liquid between the blades to rotate, under the action of inertia centrifugal force, the liquid from the center of the impeller to the periphery for radial movement.
2023-06-29
There are many types of centrifugal pumps, and the common classification methods are as follows:
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