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What industry is the decanter centrifuge used for? Decanter centrifuge working principleļ¼Centrifuges are useful in most industries where solids, liquids, and gases are mixed into a single substance, but separating the components is necessary. For example, decanters (also known as solid bowl centrifuges) continuously separate solids from liquids in slurries and therefore play an essential role in wastewater treatment, chemical, petroleum, and food processing industries. The basic principle of a decanter centrifuge relies on buoyant separation. The denser ingredients will fall to the bottom of the mixture while the less dense ones are suspended above. Due to a large centrifugal force, decanters rotate to separate the substances inside quickly. Before decanters were used, components took hours to settle, but a decanter centrifuge can take only a few seconds.
This drive system can not only maintain the hydraulic system to withstand high torque, but also achieve more precise differential speed and minimize or even eliminate peak starting current and vibration. Specifically, when starting the centrifuge, the screw is first started, which can eliminate any residual substances that may have been left during the previous operation and avoid the possibility of large startup vibrations caused by uneven distribution of residues during the rotary drum startup; At the same time, when shutting down the machine, first reduce the speed of the rotary drum, and then continue to discharge residual substances from the machine through the screw. This system, which drives the drum and screw separately and independently, can also start the screw separately when the machine is blocked, and discharge residual substances that remain inside the machine at low speeds, thereby simplifying the maintenance and repair process.
The materials then flow into the inner cavity of the bowl, which rotates in synchronization with the bowl. Because of their different specific gravities, the three types of centrifugal forces are as follows: the strongest for solids, the second strongest for heavy-phase liquids (like water), and the weakest for light-phase liquids (like oil). This allows the centrifugal force to work magic, forming an outer solid layer and two inner liquid layers. The solid material that has been deposited on the inside wall of the bowl is moved to the machine’s solid outlet using the screw, where it is dried further using extrusion and subsequently released. Meanwhile, the liquid material flows to the machine’s liquid phase outlet and overflows at various points, separating the solid, heavy, and light liquid phases. The Shenzhou Machinery 3-phase decanter centrifuge uses centripetal pump technology to determine the optimal placement of the liquid discharge layer based on the relative proportions of the heavy and light liquid phases and to adjust the position of the neutral layer of these phases. Additionally, the centripetal pump serves as the heavy liquid phase flow outlet, making it an ideal choice for pipeline layout.
High Speed Tubular Centrifuge, also called Tubular Bowl Separator or tubular bowl centrifuge, is a kind of fine separation equipment suitable for suspensions with thin concentration, fine particles, and small density difference solid-liquid separation, or liquid-liquid-solid separation. It is indispensable equipment for pharmaceutical, food, chemical, biological product, fermentation broth, beverages, blood products and other industries. High Speed Tubular Centrifuge working principle is that materials with different specific gravity are subject to different centrifugal forces when rotating at high speed, so as to achieve the purpose of separation. Discover more details on https://www.lnszjx.com/.
Rotary drum diameter. The diameter of the Decanter centrifuge is 180-920mm, which means that the theoretical volume separation range is 1:130 when the diameter to length ratio is the same. The diameter of a Decanter centrifuge cannot increase indefinitely, because as the diameter increases, the allowable speed will decrease due to the decrease in material strength, resulting in a corresponding decrease in centrifugal force. From an economic perspective, it is not possible to increase the flow rate of a Decanter centrifuge by increasing its diameter. The ratio of drum diameter to length. In the past, the aspect ratio remained at 1:2, but now it can reach 1:3 or 1:4 (or even higher). The diameter to length ratio has an impact on the residence time of materials in the clarification zone, as it determines the volumetric flow rate of the centrifuge. The diameter to length ratio does not have a significant impact on the solid flow rate, but it has an impact on the moisture content of the mud cake.