Shandong zhangqiu yi tai machinery manufacturing co., LTD
Contact: xin-sheng cheng
The true: 0531-83209474
WeChat ID: 13705411652
Q Q: 2458379166
Mail box: 6411111111 @163.com
Web site: www.zqlcfj.com
Company address: Shandong zhangqiu MingShui hou home park street
English: roots blower
English: the Roots blower
Type: straight points and belt
Principle: the roots blower is volume rotary blower, leaf rotor within the cylinder is used as the relative motion to compress and transport gas rotary compressor. This kind of compressor on the rotor shaft end to keep two rotor synchronous gear engage. Rotor portion of every sunken into the surface of working volume and the cylinder wall, in the process of the rotor turning away from inspiratory mouth gas, when moved to vent and vent near instantaneous, connected with high pressure gas flow, the pressure in the working volume suddenly rise, and then transported to the gas exhaust passage. Two rotor alternating work in turn. Between two rotor contact each other, they depend on strict control of gap seal, so the exhaust gas is not polluted by oil.
Structure: the blower has simple structure, convenient manufacture, suitable for transmission and low pressure of the gas pressure, also can be used as a vacuum pump. Due to periodic suction, exhaust and instantaneous constant volume of compressed air velocity and pressure pulsation, and can produce large aerodynamic noise. In addition, between the rotor and clearance between rotor and cylinder can cause gas leakage, thus reduce the efficiency. Displacement of roots blower was 0.15 ~ 150 meters (/ min, the speed is 150 ~ 3000 r/min. Single stage compression ratio is usually less than 1.7, the highest can reach 2.1, can use multi-level series.
Characteristics: its biggest characteristic is to use when the pressure is within the scope allowed to adjust the flow of changes little, pressure range is very wide, has the characteristics of the mandatory gas. When conveying medium oil. Simple structure, convenient maintenance, long service life, low vibration.
Medium: roots blower transport medium for clean air, clean and kerosene, sulfur dioxide and other inert gas, given with the above characteristics, and thus can be widely used to metallurgy, chemical industry, fertilizer industry, petrochemical industry, instruments, building materials.
Fan operation regulation and energy saving
According to the theory of fluid mechanics, the flow of the gas process will be accompanied by the loss. After the gas is flowing through the throttle device, for example, air pressure will be reduced accordingly, also is the useful work they lost fan. Because it is all in the process of conveying gas fan, fan of energy is wasted.
Fan point is the performance of the fan under a certain speed curve and the pipeline resistance characteristic line intersection point. Fan operation, is not always stay on the design point. It will along with the change of user requirements or external conditions change, namely fan actually in the work under the variable condition. To make the wind pressure of the fan or air to reach a target, you need to to artificially control of fan or pipe network, also known as regulation. By effectively adjust, under the condition of guarantee the stability of the fan can work, both to meet the requirements of production to flow or pressure, and to maximize the energy saving. In short, the purpose of regulation is to satisfy the performance requirements, expand (stable) conditions, to achieve energy saving, to prevent the surge.
Fan different regulating method can achieve the same purpose, but the different energy saving effects.
According to theoretical analysis and practice has proved that can come to the conclusion that the following four aspects.
(1) for blower and compressor, outlet throttling consumption work most. Although the relative flow Qr (the ratio of the actual flow Q and the design flow Q0) reduce, also less power. As when Q = 0.65 Q0, corresponding power reduced to about 80% of the original, but compared with other regulating mode, energy consumption is still in the lead.
(2) if the relative flow rate changed little (hours) or adjust the depth, the regulating ways consumption power. Adjusting mode which impact on the energy saving effect is not big, even not only energy saving, but because of the existence of adjusting device more power consumption (e.g., hydraulic coupler).
(3) in general, adjust the depth, the greater the energy saving effect is significant. Therefore, carefully choose the way to adjust, in order to gain maximum benefit.
(4) variable speed adjustment curve close to ideal curve. So, variable speed regulating mode is superior, especially adopts frequency conversion motor drive energy conservation plan for the best, but need to add frequency conversion device. For medium and small capacity variable frequency speed regulation suggest positive trial; Due to the large capacity of high voltage frequency conversion unit price is higher, should be combined with the specific situation, comprehensive comparison, to choose. All in all, both must consider regulation performance, also want to consider equipment initial investment, reliability and economy, etc., the adjusting mode can be evaluated comprehensively.
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