Cooling conditions of vacuum pump

Cooling conditions of vacuum pump

The cooling of vacuum pump helps the efficient use of the equipment, but its cooling should be under certain conditions. The following is the relevant introduction.

1. As for the medium with temperature lower than 120 ℃, generally no special cooling system is set, and the medium of vacuum pump itself is mostly used for smoothing and cooling. The suspension structure can be selected to make the upper limit of temperature reach 140 ℃ ~ 160 ℃. It is worth mentioning that the medium easy to crystallize or rich in particles should be equipped with a sealing surface flushing pipeline (interfaces are generally reserved in the design).

2. For the medium above 120 ℃ and within 300 ℃, generally, the vacuum pump cover must be equipped with a cooling chamber, and the sealing chamber should also be connected with the cooling liquid. When the cooling liquid is not allowed to penetrate into the medium, it should be connected after the medium is cooled (it can be completed through a simple heat exchanger).

To cool the vacuum pump, it is necessary to cool it according to the temperature of the medium, and pay attention to the correct method.

Rotary Vane Vacuum Pump Of Mud Mixer

Liquid Ring Vacuum Pump

Roots Vacuum Pump

Selection method of vacuum pump unit

Selection method of vacuum pump unit

With the development of vacuum application, there are many kinds of vacuum pumps. According to the actual needs, you can choose the products that are suitable for you. Now, there are many types of equipment. Today, I'd like to introduce the selection methods of the equipment. Let's have a look at them!

1. In the selection group, it is necessary to know the composition of the extracted gas, whether the gas contains condensable vapor, whether it contains particle dust, whether it is corrosive, etc. At the same time, we need to consider the actual production of vacuum and air extraction. In this way, the vacuum pump unit can be designed according to the actual matching.

2. The design of the unit is diversified and multi supporting, but it should be designed according to the actual use needs of users. The matching of the unit is neither big nor cheap.

3. At the same time, the quality of the vacuum pump or other vacuum equipment supporting the unit is also very important. When selecting the unit, it is necessary to know the composition of the extracted gas and select the corresponding vacuum pump according to the composition of the extracted gas. At the same time, when the gas contains steam and particles, auxiliary equipment such as condenser and dust remover should be installed on the air inlet pipeline.

It can be seen that it is very important to know the characteristics of each model of the equipment for the selection of the vacuum pump unit, so as to lay a foundation for the selection. It is necessary to know the important parts, functions and vacuum degree of the equipment, and select the model suitable for yourself according to each parameter.

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SK water ring vacuum pump selection

SK water ring vacuum pump selection

Water ring vacuum pump is composed of pump cover, disc, impeller, pump body, packing, etc. it has a wide range of applications. At ordinary times, the key points of SK water ring vacuum pump selection and precautions are as follows.

I. product name and model of SK water ring vacuum pump, pipe diameter of vacuum pump, service head of vacuum pump (m), motor power of vacuum pump (kw), motor speed of vacuum pump (R / min), voltage of vacuum pump (V), suction head of vacuum pump (m), medium name, specific gravity, viscosity, corrosiveness and toxicity of vacuum pump.

II. If the design unit has selected the model of SK water ring vacuum pump of our company, please order directly from the marketing department of our company according to the model.

III. please provide detailed product use requirements as far as possible, so as to ensure the correctness of model selection and improve the efficiency of use.

Generally, when we select SK water ring vacuum pump, we should also consider the use environment, etc., and select the model according to the needs of the production line in the later stage of use, which can also improve the overall production efficiency.

Piston Vacuum Pump

Dry Type Oilless Vacuum Pumps

Liquid Ring Vacuum compressor

Booster pump

Booster pump

Roots vacuum pump (hereinafter referred to as roots pump) is a kind of variable volume vacuum pump, which is equipped with two blade rotors rotating synchronously in opposite directions, and there is a small gap between the rotors, between the rotors and the inner wall of the pump shell, but they do not contact each other.

Roots vacuum pump has been tested for a long time in petroleum, chemical, plastic, pesticide, turbine rotor dynamic balance, aerospace space simulation and other devices, so it should be vigorously promoted and applied in China. At the same time, it is widely used in petroleum, chemical industry, metallurgy, textile and other industries. Vacuum pump accessories for vacuum pump noise control, vacuum pump muffler.

The features of Roots vacuum pump are: quick start, low power consumption, low operation and maintenance cost, large pumping speed and high efficiency. It is not sensitive to a small amount of water vapor and dust contained in the extracted gas. It has a large pumping speed within the pressure range of 100-1 PA, and can quickly remove the suddenly released gas. This pressure range is just between the oil sealed mechanical vacuum pump and the diffusion pump. Therefore, it is often connected in series between the diffusion pump and the oil sealed mechanical vacuum pump, which is used to improve the pumping capacity of the intermediate pressure range. At this time it is also known as a mechanical booster pump.

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Advantages of 2BV vacuum pump

Advantages of 2BV vacuum pump

2BV vacuum pump, as a common integral structure, is a single-stage pump with coaxial pump. When we use it, we will be concerned about it because of its overall advantages. Let's introduce its advantages for you.

2BV vacuum pump adopts mechanical seal, which is installed between impeller and pump body. The clearance between impeller and pump body is determined by mechanical seal. A disc is installed on the cover of the vacuum pump. The disc is equipped with suction and exhaust holes and flexible exhaust valve plates. The function of the flexible valve plate is to discharge the gas before the exhaust port when the gas pressure between the impeller blades reaches the exhaust pressure, so as to reduce the power consumption due to the excessive gas pressure, thus reducing the rate consumption.

2BV vacuum pump consists of pump cover, pump body, disc, impeller, mechanical seal, motor and other parts. The exhaust pipe of the intake pipe is connected with the pump cavity through the suction hole and the exhaust hole on the disc installed on the pump cover, the shaft is installed in the pump body eccentrically, the impeller is fixed on the shaft with a flat key, and the part gap between the two end faces of the vacuum pump is adjusted by the pad between the pump body and the disc.

The gap between the impeller of 2BV vacuum pump and the disc on the pump cover is adjusted by the pad between the disc and the pump body. The gap between the two end faces of the impeller and the disc on the pump cover determines the loss of gas in the pump cavity from the air inlet to the exhaust port and its limit pressure.

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pump definition

pump definition

A pump is a machine that converts the mechanical energy of a prime mover into liquid energy. The pump is used to increase the potential energy, pressure energy and kinetic energy (high speed liquid flow)

The prime mover drives the impeller to rotate through the pump shaft, and works on the liquid to increase its energy. Thus, the required amount of liquid is delivered to the required height or pressure place by the suction tank through the overflow part of the pump.

The prime mover drives the impeller to rotate, sucks the water into the pump from a and discharges it to B. the leading role of the pump is that the blades in the impeller force the liquid to rotate, and the liquid is thrown out to all sides under the centrifugal force

This situation is the same as the reason that the water drops on the rotating umbrella are thrown out to all sides. After the liquid in the pump is thrown out, the new liquid enters the pump under the atmospheric pressure, thus continuously supplying water from point a to point B.

Before the pump is started, it should be filled with water first. If it is not filled with water, the impeller can only drive the air to rotate. Because the mass of air per unit volume is very small, the centrifugal force generated is very small, and it is unable to discharge the air in the pump and the drainage pipeline,

If a certain vacuum cannot be created in the pump, the water will not be drawn up. The bottom valve of the pump is used for water filling, and the regulating valve at the outlet side of the pump is used to regulate the flow.
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Liquid Ring Vacuum compressor

Water ring vacuum pump

Overview of screw vacuum pump

Overview of screw vacuum pump

Screw vacuum pump is a series of dry pump products. According to the different screw profile, it can be divided into two types: medium rod type and screw type. The main characteristics of screw vacuum pump are: reliable operation, long service life; good power balance, strong adaptability, can pump out a variety of gases containing dust and condensable steam; convenient operation and maintenance. The pump is widely used in electronic, nuclear, chemical, pharmaceutical, food and other industrial fields.

The screw vacuum pump belongs to the type of positive displacement pump. Its working cycle can be divided into three processes: suction, compression and exhaust. With the rotor rotating, each pair of meshing teeth successively complete the same working cycle, which is illustrated by one pair of teeth.

The most important part of screw vacuum pump is the rotor with Yin and Yang poles. The cross-section line between the tooth surface of the rotor and the vertical surface of the rotor axis is called the rotor profile line, as shown in the figure. The tooth surface of the rotor is formed by the helical motion of the rotor profile. The internal and external rotors of screw can be regarded as a pair of meshing helical gears. The profile line must meet the meshing law, that is, the common normal passing through the contact point of indium wire at any position must pass through the node. The task of ordinary helical gears is to transfer the rotating speed, torque and power between two parallel shafts. In the dry screw pump, the internal and external rotors are not in contact, and the power transmission between them is completed by gears.
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Liquid Ring Vacuum Pump

Roots Vacuum Pump