Vertical sedimentation centrifuge

Abstract

The invention puts forward a vertical sedimentation centrifuge which comprises a shell, a main shaft, a drum sleeving the main shaft, and a machine cover firmly disposed on the top of the shell, wherein a discharge hole is disposed in the bottom of the drum. The vertical sedimentation centrifuge is characterized by comprising a controller and a feeding device, wherein the feeding device comprises a feeding tube and a feeding box disposed inside the drum, the feeding box and the main shaft are rotated in the same direction, and a material jet ring formed by a plurality of spray nozzles is disposed on circumference of the side wall of the feeding box; a feeding hole is disposed in one end of the feeding box near to the machine cover, the feeding tube passes through the machine cover and is stretched into the drum and communicated with the feeding hole, a quantitative feeding valve is disposed on the feeding tube, and the quantitative feeding valve is connected to the controller; and a weight sensor is disposed on one end inside the feeding box remote from the feeding hole, and the weight sensor is connected to the controller. The vertical sedimentation centrifuge provided by the invention can control the feeding tube to add raw materials of a pre-set total quantity into the centrifuge by multiple times, wherein the quantity of the raw materials added each time is equal, the feeding box and the drum are rotated coaxially, and the materials are dispersed uniformly on the inner wall of the drum. The vertical sedimentation centrifuge has low energy consumption, low cost and a simple structure and realizes a uniform material layout.

Description

technical field [0001] The invention relates to the technical field of centrifuges, in particular to a vertical sedimentation centrifuge. Background technique [0002] A centrifuge is a device that uses the principle of centrifugal separation to separate the suspended material into solid and liquid. A centrifuge has a cylinder, called a bowl, that rotates at high speed about its own axis, usually driven by an electric motor. After the suspension (or emulsion) is added to the drum, it is quickly driven to rotate at the same speed as the drum, and the components are separated under the action of centrifugal force and discharged separately. Generally, the higher the drum speed, the better the separation. [0003] The feeding device used in the existing centrifuge is mostly a pot cover-shaped distribution plate located above the main shaft, or a feeding tube located on the inner side of the drum. When these two feeding devices are used for feeding, the material enters the cent...

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Problems solved by technology

[0003] The feeding device used in the existing centrifuge is mostly a pot cover-shaped distribution plate located above the main shaft, or a feeding tube located on the inner side of the drum. When these two feeding devices are used for feeding, the material enters the centrifuge at once. Inside the drum, it will cause a lot of materials to be unevenly distributed, which will cause the centrifuge to appear unbalanced during operation, causing the centrifuge to vibrate

[0004] In recent years, there has been a motor-driven feeder installed on the cover of the centrifuge shell. Although it can spread the material evenly on the drum wall of the centrifuge, it still has the following disadvantages: it needs to consume Electricity; the burden on the shell cover of the centrifuge is increased, and the burden on the shell cover of the centrifuge is already heavy due to the installation of the scraper box, and the installation of the distributor with a motor drive makes the burden on the cover even heavier , when it is necessary to open the cover plate of the shell, it must be assisted by a hydraulic cylinder, which makes the structure of the whole centrifuge more complicated and the cost is higher

In addition, when the existing centrifuge is unloading, the lifting drive mechanism is used to drive the scraper shaft up and down, and the rotary drive mechanism drives the scraper shaft to rotate, which consumes a lot of energy and costs high

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