SU854452A1 - Centrifugal machine - Google Patents

Description

one

The invention relates to filtration centrifuges based on the principle of filtration, and can be used for separating suspensions in a solid one. Chemical and other areas of exposure .5

Filter blades centrifuges are known that include a rotor consisting of two discs with blades mounted between them, in which non-woven filter screens p and 2 are fixed.

The use of non-woven sieves in paddle centrifuges is due to the fact that woven (wicker) screens in paddle shafts are quickly clogged with sediment particles.

However, non-woven stationary sieves when separating suspensions with an insoluble solid phase, for example, polymer suspensions, suspensions with vegetable sinter sediment, are also clogged, which leads to a sharp decrease in productivity, an increase in moisture content.

sediment, i.e. to reduce the efficiency of the centrifuge.

Closest to the present invention is a centrifuge containing a rotor consisting of discs mounted on a drive shaft and mounted between blades. A roller is installed at the end of each blade to create a certain sliding speed of the layer of sediment 2.

However, the blades of this centrifuge are equipped with fixed filter-like partitions.

The purpose of the invention is to improve the quality of the separation of fine suspensions and suspensions with an insoluble solid phase.

Claims (2)

This chain is achieved by the fact that in a centrifuge containing a rotor, consisting of disks mounted on the drive shaft and installed between the blades, each blade is bent from an endless filtering cast. installed with the possibility of sliding around or around the blade. FIG. 1 shows a centrifuge blade, a slit; FIG. 2 shows a blasted section A-A in FIG. 1 j on, 3 - the same, section bb in Fig.2. A centrifuge (Fig. 1; includes a housing 1, inside which a rotor 3 is fixed on the shaft 2, consisting of a carrier 4 and a supporting 5 disks, between which blades 6 are located. The shaft 2 is connected to a drive (not shown). To evenly distribute the suspension The blade m in the center of the rotor is fitted with a bowl T. Each blade 6 ((1IG.2 and) consists of a trough-shaped body 8, a backing screen 9 and a nozzle 10 for draining the filter. At the beginning of each blade there is a roller 11. Each blade with a roller 11 covers an infinite filter tape 12 that can It is made of cloth. The roller 11 is kinematically, for example, due to friction forces, connected to wheel 13 located on shaft 2, and wheel 1: 5 using endless belt 14 connected to pulley 15 fixed to engine shaft 16. For removal There is a collector 17 and a tube 18. The centrifuge operates as follows: When the rotor 3 rotates, the tape 12 under the action of centrifugal forces is pressed against the roller 11, which gets rotated from the engine 16 through the pulley 15, belt 14 and wheel 13 in the direction of facilitating with, the banding tape on si We have in the direction from the rotor center to the periphery. The suspension is fed to the bowl 7, from where it is distributed through the blade 6 and enters the belt 12, where the suspension is separated into sediment and the filtrate, the precipitate is dropped from the blades into the space of the casing 1, and the filtrate through the pipes 10 enters the collection 17, from where it is discharged through pipe 18. The tape 12 slides continuously around the blade and its section, located on the back side of the blade, is cleared of sediment particles by the action of centrifugal forces. Thus, the filtration unit in this centrifuge is continuously cleaned, which increases the efficiency of the centrifuge, especially when forming slurries with an insoluble solid phase. In addition, an elastic infinite filter belt is made with practically very small openings with good hydraulic permeability, which reduces sediment entrapment with a fugate to almost zero. Making small holes in non-woven rigid screens is technologically difficult and expensive, and the hydraulic permeability of such screens drops sharply with decreasing hole sizes. Rigid metal sieves are unstable in a chemical environment, elastic filter walls can be made of chemically resistant fiber. Claims of the invention A centrifuge containing a rotor consisting of disks fixed between them and blades mounted between them, characterized in that, in order to improve the quality of separation of fine suspensions and suspensions with an insoluble solid phase, each blade is equipped with an endless 4 possibility of sliding around the blade. Sources of information taken into account in the examination. 1. USSR author's certificate number 422465, cl. B 04 B 3 / UO, 1972. 2. USSR author's certificate number 403444, cl. 04 B 7/18, 1U71 prototype). 1 LA : 6 " Fi1.g