Introduction To Pressure Changes Of Cip Return Pump
CIP Return Pump integrates self-priming and non-clogging sewage discharge, adopts axial reflux external mixing, and through the unique design of the pump body and impeller flow channel, it can not only do not need to install a bottom valve and irrigate water like a general self-priming clean water pump, but also can absorb and discharge liquids containing large solid particles and long fiber impurities. It can be widely used in municipal sewage projects, river pond farming, light industry, papermaking, textiles, food, chemicals, electricity, fiber, slurry and mixed suspension and other chemical media. The most ideal impurity pump. Compared with similar domestic products, CIP reflux pumps have the characteristics of simple structure, good self-priming performance, strong sewage discharge capacity, high efficiency and energy saving, and convenient use and maintenance. It is the first domestic product in the sewage pump series.
CIP reflux pumps are mainly made of cast iron, and adopt a unique single-blade or double-blade impeller structure, which greatly improves the ability to pass dirt. It can effectively pass fiber materials 5 times the pump diameter and solid particles with a diameter of about 50% of the pump diameter. According to user needs, the automatic liquid level control cabinet is equipped. According to the changes in the virtual liquid level, the start and stop of the pump are automatically controlled. No special person is needed for supervision, which is extremely convenient to use. When working, the pump body is immersed in the liquid, so it is easy to start, there is no problem of exhaust and vacuum, and it has the characteristics of no leakage, etc. The liquid depth can reach 0.5-7 meters.
The CIP reflux pump is designed as a two-phase flow impeller with a wide outlet, so the same volute can be equipped with two sets of impellers. The three-dimensional flow impeller is used for clear water, and the impeller is designed using Cai's two-phase flow theory for two-phase flow, which not only guarantees the design performance parameter table of the pump, but also guarantees the efficiency and corrosion resistance of the pump. Especially when used in equipment supporting the host, the CIP reflux pump can better reflect the superiority of the host, improve the overall performance of the host equipment, and enhance the external image of the host. We Zhongheng are a professional self-priming pump manufacturer.
At present, the household self-priming pumps we produce have an automatic switch function based on the self-priming pump. The automatic switch adopts pressure control. It can automatically start when the water pressure is insufficient, and automatically stop when the water pressure exceeds the set pressure. There is no need to wait when using water, which is really convenient.
The CIP return pump uses an automatic stirring device based on the ordinary sewage pump. The device rotates with the motor shaft to generate a strong stirring force, stirring the sediment in the sewage pool into suspended matter, sucking it into the pump and discharging it, improving the pump's anti-blocking and sewage discharge capabilities, completing drainage, cleaning, and desilting at one time, saving operating costs, and is an environmentally friendly product with obvious advancement and practicality.
When the CIP return pump is working, the high-speed rotation of the impeller creates a vacuum at its inlet. Under the effect of the absolute pressure difference between the atmospheric pressure on the surface of the suction pool and the inlet of the impeller, the water flows into the inlet of the impeller from the end of the self-priming water pipe. Since 1atm is equal to 10.33mh2o, the maximum water suction height HSS of the self-priming pump will not exceed 10.33m. In fact, this pressure difference must be converted into position head and velocity head during the flow of water, and overcome various head losses, and maintain a certain energy (pressure head) at the inlet, which makes the water suction height of the self-priming pump less than 10.33m.
From the water inlet of the self-priming pump to the inlet of the impeller, the water-passing cross-sectional area of the flow channel generally shrinks and decreases. When the flow rate is constant, the flow rate increases along the way, but the pressure is reduced accordingly.
The absolute pressure of the self-priming pump suction pipe decreases along the way according to the direction of the water flow. The water pump inlet is not the lowest pressure in the pump. The lowest water flow pressure in the pump is on the back near the blade inlet.
