The working principle of vacuum negative pressure self-priming pump and its advantages in practical application.
As an advanced pumping equipment, vacuum negative pressure self-priming pump has been widely used in many industrial fields. Its unique operating principle and significant advantages make it excellent for handling special conditions, especially when it is necessary to suction liquids in negative pressure vessels. This article will introduce the working principle of vacuum negative pressure self-priming pump in detail, and its application advantages under different working conditions.
1. The working principle of vacuum negative pressure self-priming pump.
The vacuum negative pressure self-priming pump is mainly composed of a self-priming pump, a vacuum pump, a vacuum pump control cabinet, a vapor separator, a liquid level sensor, a liquid level water tank, a vacuum gauge and other accessories. According to the different control methods, the pump can be divided into two types: automatic vacuum negative pressure self-priming pump and semi-automatic vacuum negative pressure self-priming pump.
1.The working principle of the automatic vacuum negative pressure self-priming pump:
The control logic of the fully automatic vacuum negative pressure self-priming pump is quite exquisite. The self-priming pump and the vacuum pump are controlled separately by a separate control cabinet, but the signal control between the two controllers is connected in series. When the machine is energized, the vacuum pump starts automatically first. As water is drawn into the self-priming pump chamber, the water flows further into the level sensor tank. When the sensor floats as the water level rises, the vacuum pump controller automatically stops running. At this time, the signal that the vacuum pump stops working will be fed back to the self-priming pump controller, so that it can start the self-priming pump. When the float sensor in the tank detects a drop in the water level, the vacuum pump automatically starts again. This design cleverly avoids the problem of damage to the mechanical seal due to idling of ordinary self-priming pumps.
2.Working principle of semi-automatic vacuum negative pressure self-priming pump:
The design of the semi-automatic vacuum negative pressure self-priming pump is slightly different. Here, the vacuum pump has an automatic start-stop function, while the self-priming pump is always in working condition or is manually start-stop. This design is typically suitable for self-priming pump products with high flow rates. Because the mechanical seals of these self-priming pumps are oil-chamber lubricated, they can run dry in a liquid-free state. Therefore, the self-priming pump and the vacuum pump can be started at the same time.
Second, the application advantages of vacuum negative pressure self-priming pump.
Vacuum vacuum self-priming pumps offer significant advantages over conventional self-priming pumps, especially when dealing with specific operating conditions.
1.High self-priming capacity with long-distance suction:
The self-priming height of the vacuum negative pressure self-priming pump can reach 9 meters, and the self-priming distance can reach 150 meters, which is far beyond the performance of ordinary self-priming pumps. This gives it a significant advantage when dealing with deep wells, high-level pools, etc.
2.Adapt to negative pressure environment:
Due to many working conditions, the suction vessel itself is in a negative pressure state, and the vacuum negative pressure self-priming pump is designed for such an environment. It can easily cope with negative pressure environments and ensure effective suction.
3.Intelligent control:
The automatic vacuum negative pressure self-priming pump realizes automatic operation through exquisite control logic. This not only reduces the difficulty of operation, but also increases the reliability of the equipment.
4.Diverse product options:
Whether it is fully automatic or semi-automatic vacuum negative pressure self-priming pump, there are a variety of models and specifications to choose from to meet the needs of different flow rates and pressures.
5.Corrosion-resistant material:
In order to meet the needs of various environments and use scenarios, the vacuum negative pressure self-priming pump is mainly made of various stainless steel materials, which has excellent corrosion resistance.
In summary, the vacuum negative pressure self-priming pump has excellent performance in handling special working conditions, especially when it is necessary to suction the liquid in the negative pressure vessel due to its unique working principle and significant application advantages. Its appearance not only improves the performance of pumping equipment, but also brings more convenience and choice to users.