Vacuum pump market and its application fields

 Vacuum pump is a kind of equipment which can produce, improve and vacuum in a certain closed space. Vacuum pump can be defined as: chemical or physical-chemical method to be pumped out of the container to obtain vacuum equipment or equipment. With the development of vacuum application, many kinds of vacuum pumps have been developed, and their pumping speed has increased from 0.0 to hundreds of thousands and millions of liters per second. According to the working principle of vacuum pump, vacuum pump can be divided into two types: gas transfer pump and gas trap pump. 

With the increasing demand for the pressure scale in the field of vacuum application technology and scientific research, most of them need to be pumped by several vacuum pump vacuum pumping systems before they can meet the demand of research process. Because the operation scale of vacuum application is very wide, so the vacuum pump can't completely operate the pressure scale, so it can only be used according to different operation requirements Empty pump.

In order to use conveniently and meet the needs of various vacuum technology processes, water ring vacuum pump sometimes combines various vacuum pumps according to their functional requirements and is used in unit type. The working principle of vacuum pump is also called water ring vacuum pump. Water ring pump began to be used as self suction pump, and then gradually used in oil, medicine and food and many other industrial parts. In many technical processes of industrial production, such as vacuum filtration, vacuum water diversion, vacuum feeding, vacuum evaporation, vacuum concentration, vacuum moisture regain and vacuum degassing, water ring pump has been widely used.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump

Rotary vane vacuum pump becomes specialized pump

Nowadays, due to the professional integration of network services, many rotary vane vacuum pump enterprises have established their own brand image, expanded the influence of enterprise products, and restarted the development vitality of enterprises. In the future, the rotary vane vacuum pump is confident to achieve a perfect turn and reshape the market development vitality with the brand. 

It is designed to meet the needs of Chinese vacuum pump enterprises in the Internet era. It focuses on the brand development of the rotary vane vacuum pump industry, and integrates various core services of the rotary vane vacuum pump enterprises through the Internet technology and means.

In recent years, with the rapid development of e-commerce, many enterprises which are deeply mired in the development see a turning point of rebirth.

The rising demand caused by this phenomenon also makes domestic e-commerce websites springing up like mushrooms. Now this new network force is developing into a main communication channel connecting the supply and demand sides. Not only that, under the diversified market demand, many personalized rotary vane vacuum pump network service products have been developed one after another, acting on the development of rotary vane vacuum pump enterprises.

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

Piston Vacuum Pump

Precautions for 2x rotary vane vacuum pump

(1) The vacuum degree refers to the pressure of the remaining gas in the pumped vessel. The partial pressure is the factory standard, and the total pressure is the auxiliary standard. The thermocouple measures the total pressure of all kinds of steam and permanent gas, while the Maxwell's meter can only measure the partial pressure of the permanent gas, so the values of the two meters are different.

(2) The pumping speed is calculated according to the geometric dimensions. At atmospheric pressure J, the actual pumping speed is basically consistent with the geometric pumping speed. At various pressures, the pumping speed decreases to a certain extent. The relationship between pumping speed and pressure is shown in Fig. 4.

(3) Temperature rise refers to the temperature difference between the oil at the exhaust valve and the room temperature after the pump temperature is stable.

(4) 2X rotary vane vacuum pump model: column 2k-1, 2 represents double-stage pump, K represents rotary vane vacuum pump, and the number behind a horizontal line represents pumping speed per second.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

vacuum pump for vacuum equipment selection basis

The two rotors of the vacuum pump run synchronously through a pair of high precision gears. The driving shaft is connected with the motor through a coupling. There are mainly two kinds of transmission structure arrangement: one is that the motor and gear are placed on the same side of the rotor. The driven rotor is driven directly by the gear at the motor end, so that the torsional deformation of the driving rotor shaft is small, and the gap between the two rotors will not be changed due to the large torsional deformation of the driving shaft, so that the clearance between the rotors is uniform during operation. 

When one kind of pump can not meet the requirements of air extraction and vacuum, several pumps need to be combined to supplement each other to meet the process requirements. Some vacuum pumps can not work under atmospheric pressure and need pre vacuum; some vacuum pumps with outlet pressure lower than atmospheric pressure need front stage pumps, so they need to be combined. The combined vacuum pump is called vacuum pump unit. It can make the vacuum system get better vacuum degree and air displacement. We should choose the combined vacuum pump correctly, because different vacuum pumps have different requirements for the gas to be removed. For example, in general, roots rotary vane unit is not suitable for the system containing more condensable gas. When you choose an oil sealed pump, you should first know whether your vacuum system has requirements for oil contamination. If the equipment is strictly required to be oil-free, all kinds of oil-free pumps should be selected, such as: water ring pump, low-temperature pump, etc. If the requirements are not strict, you can choose to have an oil pump, plus some anti oil pollution measures, such as adding cold trap, oil trap, baffle, etc., can also meet the requirements of clean vacuum.

Understand the composition of the extracted gas, whether there is condensable steam in the gas, whether there is particulate dust, whether there is corrosiveness, etc. When choosing the vacuum pump, it is necessary to know the gas composition and select the corresponding pump for the extracted gas. If the gas contains steam, particles and corrosive gas, it should be considered to install auxiliary equipment such as condenser and dust collector on the air inlet pipeline of the pump. When choosing oil seal vacuum pump, the influence of oil vapor (oil fume) discharged from vacuum pump on environment should be considered. If the environment does not allow pollution, oil-free vacuum pump should be selected, or the oil vapor should be discharged to the outdoor. If the process is not allowed, the pump without vibration should be selected or anti vibration measures should be taken.


CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump

Roots vacuum pump with relief valve Installation

1. Roots pump should be installed in dry, ventilated and clean place 

2. Roots pump should be installed horizontally, and the gap between pump and wall or other objects should be kept at least 300 mm. The oil window part of the pump shall be provided with space for easy observation of oil level.

3. When connecting the power supply, pay attention to the rotation direction of the motor. From the tail of roots pump motor, the rotation direction of motor shaft should be clockwise.

Operation steps: turn on the three-phase power supply of the motor, click the start button of the motor to check whether the steering direction is correct. If the steering direction is opposite, replace any two of the three power supply terminals.

4. The pipeline connecting roots pump and pumped vessel shall be clean, dry and free of leakage. The diameter of pipeline shall not be less than the inlet diameter of roots pump as far as possible, and the length shall be short to reduce the loss of pumping speed, and there shall be no leakage at the joint of pipeline.

5. If the extracted gas contains dust or granular substances, a suitable air inlet filter should be installed at the inlet of the pump to avoid damage to roots pump and front stage pump by dust or granular substances. (after the filter is installed, the pumping speed and limit pressure of roots pump will be affected, and the influence degree varies with the structure of the filter).

Water Ring Vacuum Pump And Water Ring Compressor Difference Between

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

Low vacuum pumping unit

The main characteristics of low vacuum unit are high working pressure and large displacement, but its pumping speed is lower than that of high vacuum unit. It is mainly used for the rough pumping of vacuum chamber, vacuum transportation, vacuum impregnation, vacuum filtration, vacuum drying, vacuum degassing (liquid steel treatment) and other equipment with large amount of outgassing and high working pressure. 

The main pumps of low vacuum pumping unit are reciprocating vacuum pump, oil sealed mechanical pump, dry mechanical pump, water jet pump, steam eruption pump, water ring pump, molecular sieve adsorption pump, wet roots pump and other direct discharge atmospheric vacuum pumps. The use of low vacuum pumping unit also needs to be equipped with necessary dust remover and water gas separator according to the cleaning degree, humidity or other special requirements of the extracted gas Oil water separator, dry bath well and other parts.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

System operation flow of water ring vacuum pump

 Seal water pump is to supply satisfactory sealing cooling water for vacuum pump. Under normal conditions, the water volume is 200L / min, and the temperature is 10 ~ 30 ℃. The circulation process is: seal water pump → seal water cooler → vacuum pump → gas water separator → seal water pump (as shown in Figure 1). The water storage in the gas water separator and the whole system is 2m3, and the make-up water and water consumption in the normal operation of the unit are less. 

In the suction system of vacuum unit, there are two air suction ports for air extraction. When the vacuum pump is just started, the air in the vacuum system of the condenser enters the vacuum pump through the bypass of the air extractor, and then enters the steam water separator along with the working water. When the negative pressure at the inlet of the vacuum pump reaches 13.3kpa, the aspirator is actually started and put into operation. At this moment, the bypass valve of the vacuum pump is closed actively (as shown in Fig. 3). Under normal conditions, the negative pressure in the vacuum system of the condenser can reach the required vacuum value after 30min operation of the air extractor.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump