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What are the selection principles and application conditions of Roots blower?

Source: Roots blower manufacturer Release time: 2023-02-18 Hits:

Roots blower It is a kind of rotary blower, which is widely used in various industries. The Roots blower produced by our factory has a flow of 0.6-360m3/min and a pressure rise of 10-80kpa. These Roots blowers are widely used in cement, chemical industry, fertilizer, smelting, sewage treatment, aquaculture, power, urban coal and gas, pneumatic transmission and other industries to meet the development needs of various industries.

Compared with the centrifugal blower, the roots blower has the specific characteristics of forced air supply. When the pressure of the centrifugal blower changes, the flow changes greatly, while when the pressure changes, the flow of the roots blower changes little, which has the characteristics of forced air supply. Roots blower is economical and durable compared with compressor, and its air volume is large.

Selection of Roots blower

The selection of Roots blower shall be determined according to the nature of the medium to be transported and the flow and pressure required by the process flow. When ordering, the user must specify the three parameters of the medium, flow and pressure to be transported. When determining the pressure and flow, the pressure loss caused by the resistance of the pipe network and the flow loss caused by the system leakage shall be taken into account, which can be obtained through theoretical calculation, It can also be calculated by analogy with similar devices.

There is often more than one type of blower that can meet the flow and pressure requirements for one purpose. The principle of choice is one of applicability and the other is economy. From the perspective of applicability, besides the pressure and flow must meet the requirements, the reliability of product use, such as corrosion resistance, wear resistance and sealing performance, should also be considered. From the perspective of economy, among the various models available, the selection should be based on the requirements of high efficiency, energy saving, high quality and low price, or focus on one of them.

For the same flow, the smaller model can be used to achieve the flow at a higher speed, or the larger model can be used to meet the flow at a lower speed. The former is small in size, light in weight and high in efficiency, but has adverse effects on vibration, noise and service life; The latter features smooth operation, low noise, long service life, but large volume and weight, and relatively high cost. If economic considerations are emphasized, small models with high speed can be selected; If the stability is emphasized, large models with lower speed can be selected.

For the same performance requirements, either direct coupled transmission or belt coupled transmission can be selected; Either dense complete sets of units can be used, or ordinary group mode can be used. - Generally speaking, direct transmission should be preferred when conveying flammable and explosive gases. If belt transmission is used, anti-static belt must be used. Belt coupling transmission can be selected when conveying dusty gas. Even if the rotor clearance increases due to dust wear, the flow can be adjusted within a certain range by replacing the pulley. In the sense of simple type selection and installation, it is better to select dense complete sets of units, but for the sake of convenient maintenance, ordinary group mode is still used in most occasions. HDfj11.COm

For specific pressure and flow, the products of various manufacturers may meet the requirements. However, product quality, sales price and service level may vary from manufacturer to manufacturer. In terms of product quality, in addition to the two indicators of flow and pressure, there are also shaft power (or specific power), product manufacturing accuracy (such as synchronous gear accuracy), sealing performance, noise value, etc. When selecting models, multiple factors should be comprehensively compared. Under the condition of reasonable price, it is better to choose products with good quality and high efficiency. Relatively speaking, they have lower operating costs, higher output benefits and longer service life.

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