Liquid ring pumps are made for pumping not only water but also oils. Some models are widely used in the perfume industry. There are also modifications that are in demand at dairy processing enterprises. The main parameters of the devices include engine power, fluid density, and threshold pressure.
Liquid ring vacuum pump: principle of operation
The principle of operation of a liquid ring pump is based on the rotation of the plates. Due to this, a lot of pressure is created inside the device chamber. A stator is used to rotate the shaft. At the pumps the union is installed with a head. In order for the pipe to be firmly fixed, there is a protective ring. Liquid enters the pump chamber through the inlet. After sweep, it enters the channel. Finally, all fluid is pumped through the nozzle.
Pump type NSU-3 / 0.35
For the pumping of oils, the indicated liquid ring vacuum pump is used. The principle of operation of the device is based on a gradual increase in pressure inside the chamber. In total, the model has five plates. The drive shaft is installed with a diameter of 2.3 cm. In this case, the pushers are provided with a head. The model is perfect for pumping water. The engine of this pump is set to 3.4 kW.
The sleeve is located at the base of the shaft. Permissible fluid density is 4 lm. The maximum pressure of the device is 10 MPa. In order to monitor the operation of the pump, a pressure gauge is installed. The weight of this model is 55 kg. It is possible to buy the presented water ring vacuum pump for 22 thousand rubles.
VVN 2-50M device
For pumping a liquid of low density, the indicated liquid ring pump is used. The principle of operation of the model is based on increasing pressure due to the rotation of the plates inside the chamber. A device with two pushers is being manufactured. There are four plates in the housing. The drive shaft is set to 3.2 cm. The nozzle outlet is 4.3 cm. The total length of the drive shaft is 22 cm.
The threshold pressure of the device withstands 12 MPa. The protective ring on the model is used with a seal. The inlet has a small diameter. The case in the presented pump is made entirely of cast iron. Permissible fluid density is 3 lm. It is possible to buy a VVN 2-50M water ring pump for 24 thousand rubles.
Models for Dairy Products
For dairy products, the water ring vacuum pump is sold in two chambers. The device is ideally suited for pumping water. In this case, the plates are located at an angle of 12 degrees. The drive shaft for models is provided with a bar. The permissible level of fluid density is 5.5 lm.
The threshold pressure of the device is 15 MPa. In total, the models have one bar. The plates in this case are at an angle of 12 degrees. In total, the pumps have two pairs of pins. The latches are made of steel. You can buy a water ring pump for dairy products for 18 thousand rubles.
Devices for oil and fat products
Pumps of this type are manufactured with high power motors. If we consider modifications to three plates, then their drive shaft is used at 2.2 cm. In this case, the permissible fluid density is 5 lm. The threshold pressure of the devices is 10.2 MPa. The cameras for many models are designed for 4.5 liters.
In performance, the pumps of this type are quite different. If we consider modifications to five plates, then they have a density index of 14 lm. In this case, the threshold pressure parameter fluctuates around 22 MPa. You can buy a high-quality liquid ring pump of this type for 35 thousand rubles.
Features of models for the production of confectionery
Pumps for the production of confectionery products are distinguished by volumetric chambers. Pushers in the devices are located behind the head. In this case, the plates are arranged at an angle of 15 degrees. The permissible level of substance density is 10 lm. Pumps withstand threshold pressure on average 13 MPa. If we consider modifications to three plates, then they are made with short drive shafts. In this case, the supports are located at a small angle.
It is also important to note that modifications with rods are on the market. Two protective rings are installed at the outlet. The principle of operation of the device is based on the rotation of the shaft. Motors for this are used with power from 3 kW. Five pumps are also sold on the market. Their angle of inclination is not more than 13 degrees. The threshold pressure of devices of this type is kept at 15 MPa. It is also important to note that the permissible density of a substance varies around 8 lm. This type of water ring vacuum pump (market price) costs about 30 thousand rubles.
Pumps for fruits and vegetables
This type of liquid ring pump is made with a reinforced shaft. In this case, the rod is installed with a steel support. Many modifications of this type are made on two output branch pipes. If we consider a pump with three plates, then it has a filter for drying. Many models of this type are equipped with caps. The motor is mounted behind the rotor. Its power is not more than 5 kW. Performance in this case depends on the volume of the camera.
If we consider a four-plate water ring pump, then it has a cranked drive. On average, the drive shaft is used at 2.2 cm. Thus, the pump performance fluctuates around 300 cubic meters. meters per hour. It is also important to note that devices with three outlet pipes are available. This type of pump costs about 32 thousand rubles.
Cosmetic Pumps
The pump of this type can be produced in two plates. In this case, the rotor is used with a diffuser. Motor power averages 4 kW. Thanks to this, the performance parameter is kept at 200 cubic meters. meters per hour. Many pumps have filters for drying. The volume of the chamber averages 4.5 liters. It is also important to note that the models are equipped with pressure gauges.
The threshold pressure of the devices does not exceed 10.3 MPa. The permissible density of the substance is 8 lm. If we consider a pump with four plates, then it uses a 6 kW motor. The threshold pressure of the devices is about 12 MPa. You can buy a pump of this type at a price of 35 thousand rubles.
Models for the production of perfumes
This type of pump is manufactured with a single boom. Motors on devices are installed, as a rule, of the collector type. If we consider a pump with three plates, then it has a diffuser. On average, the threshold pressure parameter does not exceed 20 MPa. It is also important to note that performance depends on the volume of the main camera. For models with three plates, it is set to 4 liters.
If we consider a pump with five plates, then it uses a drive rotor. As a rule, the rod is installed in the rear of the housing. The motor for the models is used at 12 kW. On average, the threshold pressure indicator does not exceed 5 MPa. It is also important to note that the permissible density level is about 25 lm. More on the market are modifications to six plates.
Their cameras are used for 3 liters. The outlet pipes in the devices are located at the rear of the structure. Motors are most often used collector type. The power rating of the devices is 7 kW. In this case, the allowable pressure parameter fluctuates around 13.5 MPa. You can buy a pump of this type for 24 thousand rubles.