Iraq Vacuum Pump is a rotary variable displacement pump, which includes dry screw vacuum pump, liquid ring vacuum pump, slide valve pump, rotary vane vacuum pump, Roots vacuum pump and diffusion pump. It has the characteristics of large pump speed and wide pressure range, and is widely used in metallurgy, chemical industry, food, electronic coating and other industries.
Iraq Vacuum Pump Technical Principle:
According to the working principle of vacuum pump, vacuum pump can be basically divided into two types, namely gas transmission pump and gas trapping pump. Gas transfer pump is a kind of vacuum pump which can make the gas continuously inhaled and discharged in order to achieve the purpose of pumping. Gas trapping pump is a kind of vacuum pump that makes gas molecules adsorb or condense on the inner surface of the pump, thereby reducing the number of gas molecules in the container and achieving the purpose of pumping.
Vacuum pump is a device that produces, improves and maintains vacuum in a closed space by various methods. Vacuum pumps can be defined as devices or devices that use mechanical, physical, chemical or physicochemical methods to extract air from the pumped containers to obtain vacuum. With the development of vacuum application, many kinds of vacuum pumps have been developed. Their pumping speed has risen from zero to hundreds of thousands and millions of liters per second. According to the working principle of vacuum pump, vacuum pump can be basically divided into two types, namely gas transmission pump and gas trapping pump.
With the application of vacuum technology in the field of production and scientific research, the requirement of its application pressure range is wider and wider. Most of the vacuum pumps need to be composed of several vacuum pumps to suck together before they can meet the requirements of production and scientific research. Because the range of working pressure involved in vacuum application department is very wide, so the vacuum application department needs to suck together several vacuum pumps to meet the requirements of production and scientific research process. Any type of vacuum pump can not be fully applicable to all working pressure ranges. It can only use different types of vacuum pumps according to different working pressure ranges and different working requirements. In order to use conveniently and meet the needs of various vacuum process, sometimes all kinds of vacuum pumps are combined according to their performance requirements for unit type application.
Iraq Vacuum Pump Structure Composition:
(1) General structure of pump
The layout structure of the pump body of the vacuum pump determines the overall structure of the pump.
Vertical structure of the intake and exhaust port level settings, assembly and connection pipelines are more convenient. But the center of gravity of the pump is high and its stability is poor at high speed, so this type of pump is mostly used in small pumps.
Horizontal pump intake is in the upper, exhaust is in the lower. Sometimes in order to facilitate the installation and connection of the vacuum system pipeline, the exhaust outlet can be connected from the horizontal direction, that is, the direction of intake and exhaust is mutually perpendicular. At this time, the exhaust outlet can be opened in both left and right directions. In addition to one end of the exhaust pipe, the other end is blocked or connected with a bypass valve. The pump has low center of gravity and good stability at high speed. Generally large and medium-sized pumps use this structure.
The two rotor shafts of the pump are installed vertically with the horizontal plane. The assembly clearance of the structure is easy to control, the assembly of the rotor is convenient, and the area of the pump is small. However, the centroid of the pump is high, the gear disassembly and assembly is inconvenient, and the lubrication mechanism is relatively complex.
(2) Driving mode of pump
The two rotors of the vacuum pump operate relatively synchronously through a pair of high precision gears. The drive shaft is connected with the motor through a coupling. There are mainly two kinds of transmission structure arrangement: one is that the motor and the gear are placed on the same side of the rotor. The driven rotor is driven directly by the end gear of the motor, so that the torsional deformation of the active rotor shaft is small, and the clearance between the two rotors will not change because of the torsional deformation of the active shaft, so that the clearance between the rotors is uniform in the course of operation. The biggest disadvantage of this transmission mode is: a. There are three bearings on the drive shaft, which increases the difficulty of processing and assembling the pump, and the disassembly and adjustment of the gears are inconvenient; B. The overall structure is not symmetrical, and the center of gravity of the pump is biased to the side of the motor and gear box.
Iraq Vacuum Pump Characteristics:
(1) There is a large pumping speed in a wide pressure range.
(2) The rotor has good geometric symmetry, so it has small vibration and smooth operation. There are clearances between the rotors and between the rotors and the housing. Without lubrication, the friction loss is small, which can greatly reduce the driving power and achieve higher speed.
(3) There is no need for oil seal and lubrication in the pump chamber, which can reduce the pollution of oil vapor to the vacuum system.
(4) There is no compression and exhaust valve in the pump chamber. Its structure is simple and compact, and it is insensitive to dust and water vapor in the exhausted gas.
(5) Compression ratio is low and the effect of hydrogen extraction is poor.
(6) The surface of the rotor is a curved cylindrical surface with complex shape, so it is difficult to process and inspect.
Iraq Vacuum Pump Maintenance:
The quality of vacuum pump depends on its mechanical structure and oil quality. It must be well protected when using vacuum pump. When distilling volatile organic solvents, the organic solvents will be absorbed by oil to increase vapor pressure, thus reducing the pumping efficiency. If it is acid gas, it will corrode the oil pump. If it is water vapor, it will make the oil into emulsion and destroy the vacuum pump.
Therefore, the following points should be paid attention to when using vacuum pumps:
Absorption devices must be installed between the distillation system and the vacuum pump.
Before distillation, the vapor of organic solvents in the system must be thoroughly pumped out by water pump.
If pumps can be used to pump air, then try to use water pumps, such as distilled substances containing volatile substances, you can first use water pumps to reduce pressure, and then use oil pumps.
The decompression system must be airtight, all rubber plugs should be of appropriate size and aperture, and rubber pipes should be vacuum rubber pipes. The ground glass is coated with vacuum grease.
In recent years, the momentum of vacuum pumps in Iraq is very strong, especially the refined process, high efficiency, high precision, environmentally friendly vacuum pump products are very popular. At the same time, with the wide application of environmentally friendly materials, the development of vacuum pumps in Iraq is becoming more and more mature, and new breakthroughs have been made in the relevant detection technology.