Knowledge, the four kinds of vacuum pump is so _

it is very important to vacuum pump mechanical equipment, widely used in the production of many types. You know about the working principle of different types of vacuum pump? Below is designed for vacuum pump several types of small series of vacuum pump. Working principle and the range is as follows.

01。 Screw vacuum pump

the characteristics of the screw vacuum water pump: in addition to the common characteristics of positive displacement pump, screw vacuum pump has axial flow in a row, small ripple, low speed of internal as well as the possibility of mixed more air and other gas. The application of liquid mixing and rotation of many applications.

scope of application: widely used in petroleum, chemical industry, chemical fiber, power, offshore engineering, shipbuilding, precision machine tools, food and other industrial fields.

02。 The characteristics of the gear pump

gear pump: 1. Simple structure, low cost; 2 job requires low, applicable range is extensive; Three end cover and the clearance between the gear grooves formed many fixed seal studio, can only be used as a quantitative pump; 4, light weight, good performance and price is low, self-priming sex is strong, is not sensitive to oil pollution, wide speed range, load impact resistant, easy to maintain, and reliable operation; 5 unbalanced radial force, arterial flow is big, big noise and low efficiency, poor parts interchangeability, not easy maintenance after wear, cannot be used as a variable pump. Scope:

general transport oil, lubricating oil and so on lubricating liquid. In the mechanical industry is used as the auxiliary oil pump, used for medium speed, low pressure and lubricating oil system of the hydraulic system, In the chemical industry can be used for transporting high viscosity material, such as nylon, polyethylene, polypropylene and other molten resin.

03。 Vane vacuum pump

vane vacuum pump features: uniform than gear type vacuum pump output flow, stable running, low noise; Working pressure is high, the volumetric efficiency is high, single-acting vane vacuum pump is easy to realize the flow control, the double-acting vane vacuum pump rotor radial fluid pressure balance. The life of the vane vacuum pump is poor, is sensitive to oil pollution, the blade easily got stuck impurities, working poor reliability, complicated structure, production of high precision, high cost. Applicable occasions: applicable to medium viscosity of the liquid.

04。 Rotary vane vacuum pump

rotary vane vacuum pump work features: small volume, light weight, low noise; With angry town valve, can remove a small amount of water vapor; In the environment temperature from 5 degrees centigrade to 40 degrees Celsius, within the scope of the inlet pressure is less than 1. 3X103 Pa。 Under the condition of allowed to run continuously for a long time, when pumping gas relative humidity is more than 90%, the valve should be open air; Check valve with automatic check oil, easy to start; Air inlet continuous smooth cannot exceed the atmosphere running a minute; Does not apply to remove corrosive to metal, to pump oil chemical reactive gases, explosive toxic gas containing dust particles and oxygen.

it has been widely used in metallurgy, machinery, military, electronics, chemical industry, light industry, oil and medicine production and scientific research departments.

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