Circulating water vacuum pump working principle and advantages
The working medium of the circulating water vacuum pump is water, and the body adopts double taps, which can be used individually or in parallel and equipped with two vacuum meters. The circulating water vacuum pump can provide vacuum conditions for the chemical laboratory and can provide circulating cooling water to the reaction device. Circulating water vacuum pumps are widely used in evaporation, distillation, crystallization, filtration, decompression, sublimation and other operations. Today we will introduce the working principle and advantages of circulating water vacuum pump to you in detail.
Vertical circulating water vacuum pump Desktop circulating water vacuum pump
Advantages of circulating water vacuum pump:
1. Multifunctional comprehensive effect.
The circulating water vacuum pump can not only provide vacuum conditions, but also perform external circulation operations to provide circulating cooling water for the reaction device. The circulating water vacuum pump is connected to the tap water source, and the temperature and water quality of the vacuum circulating water can be kept unchanged under the condition of continuous operation for a long time by adding an appropriate amount of water injection source, which can not only ensure the decrease of the vacuum degree but also realize the supply of circulating cooling water.
2. The water saving effect is obvious.
Due to the use of water circulation operation, the water added to the water tank can be recycled, thereby overcoming the phenomenon of a large amount of water wasting when the vacuum is obtained by directly flushing tap water. According to the actual measurement, it is calculated by continuous operation for one working day. Using this product under the condition of reaching the same vacuum degree can save more than 10 tons of water, and it can be used for a long time after adding water once. It is especially suitable for laboratories with insufficient water source or insufficient water pressure.
3. Two suction nozzles can be operated individually or simultaneously.
The circulating water vacuum pump is equipped with two suction nozzles, which can be used for suction operation individually or at the same time. Each suction nozzle is equipped with a vacuum gauge to easily observe the degree of vacuum, and a check valve is installed on the suction line to prevent the circulating water from flowing back into the vacuumed equipment when the vacuuming operation is stopped unexpectedly.
4. Corrosion-resistant and pollution-free.
The pump parts of the circulating water vacuum pump are made of stainless steel, which is not affected by corrosive substances such as acid and alkali, and does not produce any oil stains and impurities that pollute the laboratory.
The working principle of the circulating water vacuum pump: the circulating water vacuum pump body is filled with an appropriate amount of water as the working fluid. When the impeller rotates clockwise, the water is thrown around by the impeller. Due to the action of centrifugal force, the water forms a closed ring of approximately equal thickness determined by the shape of the pump cavity.
The inner surface of the lower part of the water ring is just tangent to the impeller hub, and the upper inner surface of the water ring is just the tip of the blade (in fact, the blade has a certain insertion depth in the water ring). At this time, a crescent space is formed between the impeller hub and the water ring, and this space is divided into several small cavities equal to the number of blades by the impeller.
If the bottom zero of the impeller is taken as the starting point, the area of the small cavity changes from small to large when the impeller rotates 180 degrees before, and it communicates with the suction port on the end face. At this time, the gas is inhaled. When the suction ends, the small cavity is isolated from the suction port; when the impeller continues to rotate, the small cavity changes from large to small so that the gas is compressed; when the small cavity communicates with the exhaust port, the gas is discharged out of the pump.
The above is a summary of the working principle and advantages of the circulating water vacuum pump for everyone.If you have needs, you can contact Zhengzhou Keda Machinery Equipment Co., Ltd. For decades, Zhengzhou Keda Machinery Equipment Co., Ltd. has been committed to the production and manufacture of laboratory instruments and pipe fittings. If you want to know about our products, or want to buy our instruments, please feel free to contact us, we will be happy to help you.
