SU986507A1 - Multihydrocyclone - Google Patents

Description

(54) MULTIGIDROCYCLONE

t The invention relates to multihydrocyclones for the separation of suspensions and can be used in the starch industry, as well as in the coal, chemical and other industries. The multihydrocyclone is known, which is a group of hydrocyclones (microcyclones) designed to separate the predominantly finely dispersed suspensions that work in parallel and are combined in one case with common supply chambers for the original product, the output liquid, condensed conversions 1. The disadvantage of this multi-hydro cyclone is that its nominal capacity cannot be increased, but its reduction, although possible, is difficult. This is usually accomplished by removing a portion of the microcyclones and killing the vacated holes with special plugs. This disadvantage is partially eliminated in a multi-hydro cyclone, where micro-cyclones are combined into separate C 2 blocks. In this construction, a stepwise decrease in productivity is achieved by removing blocks of micro-cyclones, which is much simpler, since it reduces the number of muffled holes. However, this multi-hydro cyclone does not provide for a change in productivity to a large extent from the nominal one. In addition, when part of the microcyclone blocks are removed, which is often used in the practice of starch production, if it is necessary to reduce productivity, the speed of the product in the chamber of the initial product decreases as the area increases. When this occurs, the partial precipitation of starch, which contributes to the emergence of microbiological processes that impair the quality of the original product. The stalking of starch particles and the formation of conglomerates, which cause clogging of microcyclone nozzles, disruption of their normal operation and, as a consequence, reduced separation quality, also occur. These drawbacks lead to serious difficulties when using multihydrocyclones in starch-producing substances caused by fro productivity starch factories range from 39 to a very large limit: (from 60 to 600 tons of raw materials per day). Virtually every plant requires the complete construction of a multi-hydrocyclone station itself. In addition, the performance of each individual plant may vary significantly during the processing season, which necessitates a change in the number of micro cyclones in the station stages. In connection with this, the task of creating a multi-hydro cyclone structure, which makes it possible to step up this change in productivity in one direction or another, is highly relevant. The aim of the invention is to improve the reliability of multi-hydrodiclone in operation by providing stepwise performance changes. The goal is achieved that the multi-hydro cyclone containing micro-cyclone blocks located in the housing, the feed chamber of the initial product and the light and condensed fractions placed inside it, is fixed nozzles on a common flange with elastic couplings, by means of which the collection and removal chambers of the clarified fraction of blocks and the chamber with boron and removal of the thickened fraction of the blocks. It is advisable to make the body part of the shells with flanges. This multi-cycle design makes it possible to stepwise change its performance over a wide range by changing the number of blocks. , With an increase in the number of blocks, the height of the multi-cyclone increases, and its diameter remains unchanged, which saves production space. Such a structure does not change the location of microcyclones in the cross-sectional plane of a multihydrocyclone upon changing its productivity, which excludes a reduction in the product speed in a multihydrocyclone and, consequently, the possibility of starch sedimentation. The use of unified units simplifies the manufacture and operation of the device. Figure 1 shows multihydrocyclone, longitudinal section; in Fig.2 a section aa in Fig.1; on fig.Z - version of the assembly of multihydrocyclone; 4 and 5 - blocks with microcyclones. The multi-hydro cyclone contains body 1, blocks 2 and 3, the number of which corresponds to a given capacity and coupling 4 y (in a private beam for low productivity, locks 2 may be absent - see p. 3). The housing 1 contains a shell 5 with pins, a bottom 6 with a pipe 7. for supplying the original product and pipe 8 and 9 for outputting light and curved fractions, support legs 10. At pipes 7, 8 and 9 are combined by a common lanche 11. Block 2 (FIG. 4) contains a shell 12 with two flanges 13, two collection and discharge chambers 14 of the light fraction, and a condensed fraction collection and removal chamber 15, microcyclones 16. The diameter of the shell 12 is equal to the diameter of the shell 5. The chambers 14 and 15 each have two coaxially communicating with the cavity chambers of the nozzle 17 and 18, through holes, isolated from the cavity of the chambers sleeves 19, 20, and holes 21 - micro cyclone seats. In addition, studs 22 are fixed on chamber 15. Block 3 (FIG. 5) differs from block 2 in that the shell instead of the upper flange is equipped with a blind cover 23, chamber 14 does not have a nozzle 18 and there is no through hole with sleeve 19 pipe 17. The assembly of the multi-cyclone is performed as follows. First, separate blocks are assembled. Microcyclones 16 are installed in the openings 21 of the chamber 15. The chamber 14 is mounted on the studs 22, aligning the openings 21 with the seats of the microcyclones in such a way that the nozzles 17 and 18 of each chamber are aligned coaxially with the corresponding through holes limited by the sleeves 19. For sealing the microcyclones the last places are stacked with studs. The block 2 (in the particular case of the block 3) is mounted on the uprights 10 of the housing 1 so that the nozzles 8 and 9, on which the elastic couplings are pre-fitted, are aligned with the nozzles 17 and 18 of the unit 2. The nozzles of the nozzles are connected by elastic couplings 4. Then the block they are closed with a shell 12, which is flanged to the shell 5 of housing 1. All blocks, the number of which depends on a given multi-hydro cyclone capacity, are assembled into a multi-hydro cyclone so that the nozzles 18 of the same block are aligned with the through holes ort By the sleeves 19 of the other block, the Combined nozzles 17 and 18 of the different blocks are connected by elastic couplings, the shells of the blocks are flanged.

As the upper block use block 3,

In the thus collected multihydrocyclone form through channels for removal of the light and condensed fraction of microcyclones.

Multihydrocyclone works in the following way.

The suspension under pressure through the pipe 7 is fed into the housing 1 of the multi-hydrocyclone and fill its entire volume. Due to the excess pressure inside this housing, the suspension enters the microcyclone inlets, where centrifugal forces separate it into two products: light and condensed fractions, which are collected in the respective chambers of the blocks and through the through channels formed by the pipelines, removed from multihydronic connectors through pipes 8 and 9.

Thus, unifying the blocks reduces the cost of manufacturing the multi-cycle cycling and maintenance costs, as the assembly process is simplified.

The economic effect from the use of the proposed multi-cyclone will be about 22.5 thousand rubles. in year

Claims (2)

Invention Formula .Multihydrocyclone containing blocks of microcyclones located in the body, the chamber of supplying the initial product to the collection and removal chambers of the light and condensed fractions located inside it, about tl and h aa- {. So that, in order to increase its reliability in operation by providing stepwise performance changes, it is equipped with branch pipes fixed to a common flange, with flexible couplings, through which the clarified fraction of the blocks and the collection and discharge chamber are connected with each other. fractions of blocks. 2. A multi-hydro cyclone in accordance with Claim 1, in accordance with the fact that the casing is made of composite shells with flanges. Sources of information taken into account in the examination 1. Polish patent 47573, cl. 12 d 1/01, 1962. 2. USSR author's certificate number 271444, cl. On 01 45/12, 1968. BUT Phage. / T-A