Product Overview:

A cyclone dust collector consists of an inlet pipe, an outlet pipe, a cylindrical body, a conical body, and a hopper. Cyclone dust collectors have a simple structure, are easy to manufacture, install, and maintain, and have low equipment investment and operating costs. They are widely used for separating solid and liquid particles from gas streams or separating solid particles from liquids. Under normal operating conditions, the centrifugal force acting on particles is 5 to 2,500 times greater than gravitational force, so the efficiency of cyclone dust collectors is significantly higher than that of gravitational settling chambers. Based on this principle, a cyclone dust collection device with an efficiency of over 90% has been successfully developed. Among mechanical dust collectors, cyclone dust collectors are one of the most efficient types.

It is suitable for removing non-adhesive and non-fibrous dust, primarily used to remove particles larger than 5 μm. A multi-tube cyclone dust collector arranged in parallel can achieve an efficiency of 80–85% for particles as small as 3 μm. Cyclone dust collectors constructed from special high-temperature-resistant, wear-resistant, and corrosion-resistant metals or ceramics can operate under conditions of temperatures up to 1000°C and pressures up to 500×10⁵ Pa. Considering technical and economic factors, the pressure loss control range of cyclone dust collectors is generally between 500 and 2000 Pa. Therefore, it belongs to the category of medium-efficiency dust collectors and can be used for the purification of high-temperature flue gas. It is a widely applied type of dust collector, commonly used in boiler flue gas dust removal, multi-stage dust removal, and pre-dust removal. Its main drawback is its relatively low removal efficiency for fine dust particles (<5 μm).

A cyclone dust collector is a type of dust collection device. Its dust collection mechanism involves causing the dust-laden gas flow to rotate, using centrifugal force to separate dust particles from the gas flow and collect them on the inner wall of the device, and then relying on gravitational force to cause the dust particles to fall into the ash hopper. Each component of a cyclone dust collector has specific dimensional proportions. Any change in these proportions can affect the efficiency and pressure loss of the cyclone dust collector, with the dust collector diameter, inlet size, and exhaust pipe diameter being the primary influencing factors. When in use, it should be noted that beyond a certain threshold, favorable factors can also become unfavorable factors. Additionally, some factors may be beneficial for improving dust removal efficiency but can increase pressure loss, so adjustments to these factors must be made with both considerations in mind.

Performance characteristics:

Using the method of integrating the axial velocity over the flow area, the changes in the downward flow rate of a conventional cyclone dust collector after installing different types of flow-reducing rods were calculated simultaneously. The percentage of the downward flow rate at various cross-sections relative to the total processing flow rate of the dust collector was plotted for each case to illustrate the average value of the flow rate in the upper and lower flow zones (i.e., the downward flow rate) and the magnitude of the difference between the actual flow rates in the upper and lower flow zones. The changes in the short-circuit flow rate and downward flow rate along the height of the dust collector can be observed for each model. Compared to conventional cyclone dust collectors, installing full-length flow-reducing rods 1# and 4# increases the short-circuit flow rate, while installing non-full-length flow-reducing rods H1 and H2 reduces the short-circuit flow rate.

After installing 1# and 4#, the variation pattern of the downward flow rate along the process is basically the same as that of conventional cyclone dust collectors, showing a linear distribution with the three lines nearly parallel and decreasing. However, after installing H1 and H2, the distribution is a broken line rather than a straight line, with the inflection point precisely at the cross-sectional position where the resistance-reducing rod extends upward from the bottom. This also shows that the non-full-length resistance-reducing rods increase the descending flow rate at all cross-sections above the cross-sectional position where they extend, with the descending flow rate exceeding that of conventional dust collectors. However, after contacting the resistance-reducing rods, the descending flow rate decreases rapidly, reaching or falling below the value of conventional dust collectors at the bottom of the cone.

The reduction in short-circuit flow improves dust removal efficiency, increases the downward flow rate at the cross-section, and extends the residence time of dust-laden air within the dust collector, thereby creating more opportunities for dust separation. Therefore, although the non-full-length drag-reducing rod has a weaker drag-reducing effect than the full-length drag-reducing rod, it is more advantageous for improving the dust removal efficiency of the cyclone dust collector. Conventional cyclone dust collectors have short-circuit flow rates as high as 24% near the inlet cross-section of the exhaust core tube, which severely impacts overall dust collection performance. Reducing this short-circuit flow will be a key research direction for improving efficiency. Although non-full-length drag-reducing rods have a weaker drag-reducing effect than full-length drag-reducing rods, they are more practically significant because they reduce short-circuit flow in conventional cyclone dust collectors, increase the flow rate at the cross-section, and improve the dust removal efficiency of cyclone dust collectors.

Main uses:

Cyclone dust collection systems are widely used in hardware factories, furniture factories, cement factories, plastic factories, shoe factories, and all other workplaces that generate dust. They can also be used as pre-treatment equipment for dust collection systems.

Working principle:

The dust-laden airflow is made to rotate, and the dust particles are separated from the airflow by centrifugal force and collected on the walls of the device. The dust particles then fall into the ash hopper under the force of gravity. Stainless steel cyclone dust collectors are generally used to collect particles larger than 5-15 microns. The dust collection efficiency can reach over 80%. In recent years, specially designed stainless steel cyclone dust collectors have been improved, and their dust collection efficiency can reach over 95%.

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