SU948459A2 - Centrifugal apparatus for separating suspensions - Google Patents

Description

(54) CENTRIC EQUIPMENT FOR SEPARATION OF SUSPENSIONS

The invention relates to devices for separating suspensions under the action of centrifugal forces, can be used in the chemical, petrochemical and other sectors of the industry and is an improvement of the device described in ed. St. N 52812 O. Basically auth. St. N "52812O describes a centrifugal apparatus for separating suspensions, including a housing, an impeller mounted on a hollow shaft; a rack consisting of profiled discs forming a chamber for entering the suspension and a chamber for withdrawing the clarified fraction, a pipe for feeding the suspension and a pipe for unloading sediment . The shaft has a central drain hole and a series of holes in the wall connecting the cavity of the shaft with the chamber to drain the clarified fraction. A disadvantage of the known device is the rigid mounting on the hollow profiled discs and the lack of a possibility of changing the size of the peripheral unloading of the slot without disassembling the apparatus. The size of the discharge gap between the disks is necessary due to its frequent clogging with particles of the solid phase, as well as to determine its optimal size when separating the spreading suspensions differing from each other in both the viscosity of the liquid phase and dispersion, grain size distribution and solids content. . The purpose of the invention is to increase the work resource. This goal is achieved by the fact that in the Centrifugal apparatus for separating suspensions according to the author. St. The N 528120 upper disc is provided with a mechanism for its movement along the axis of the apparatus for adjusting the annular discharge of the slit. The mechanism for mending the upper disc includes a sleeve connected to the shaft with the possibility of axial movement connected to the radial partition and a nut; at the same time, the upper parts of the sleeve and the shaft have threads on the outer surface that interact with the thread of the nut. FIG. 1 shows an obdium view of an ap. Device, a gfodolny incision; in fig. 2 is a view along arrow A of FIG. I: in FIG. 3 and 4 - section BB of FIG. 2. In the stepped cylindrical housing 1 with a tangently inlet nozzle 2 in the upper part and a sanding nozzle for the lower part, there is a cocTosmiee impeller made of iwuh shaped professes 4 and 5 fixed to the hollow drive shaft 6 with the formation of an annular slot, 7 between them. A radial partition 8 is installed in the wheel, connected by frames 9 to the upper disk 4, which separates the cavity of the wheel to the input chamber 1O and the suspension and the chamber 11 to discharge the clarified fraction. The lower disk 5 is rigidly fixed on the shaft 6 by means of a key 12, a round rafka 13 and lock washer 14, and the upper disk 4 is equipped with a mechanism for moving it along the axis of the device for adjusting the annular discharge slot 7, the movement mechanism includes a sleeve 15 connected to the radial partition 8, mounted on the shaft 6 with the possibility of axial movement, and the nut 16. The sections of the sleeve 15 and the shaft 6 have on the outer surface a thread that interacts with the thread of the nut 16, which is fixed in a certain position by means of two locknuts 17 and 18. Paul The shaft 6 at the level of the nut 16 has a face with a scale (marking) on the outer surface, in the nut 15 there are six radial viewing holes 19 located opposite the scale. This ka 15 has an open rounded groove 2O with an outer chamfer from the threaded end. To communicate the chamber 11 of the discharge of the clarified fraction with the cavity of the shaft 6, radial holes are made in the latter: 21. The seal between the upper part of the housing I and the sleeve 15 is carried out using a Selnik device 22. This is due to the insignificance (up to 1-3 mm) of the axial movement of the upper the disk 4, the sleeve 15 is mounted on the hollow shaft 6 by a tight fit, and no sealing of this gap is required. The machine works as follows. The initial suspension is under slight overpressure or without excess aavl (ESH1 through the inlet tangential nozzle 2 is fed into the upper part of housing 1. Here the terminal is pre-twisted and then enters the chamber of the initial suspension of the impeller, where it is intensively rotated movement. In chamber III, due to centrifugal force, the denser part of the suspension is directed to the peripheral discharge slit 7. The size of this slit is set so that only part of the suspension passes through it. Since the densest part of the suspension slides towards the slit in the chamber Yu, the presharately condensed part flows out through the slit, and the less dense part is pressed and, bending the radial partition 8, is forced out through the holes 21 in the shaft wall 6 into its cavity. the suspension through the peripheral slit 7 of the impeller is thrown by a rotating vortex to the sand nozzle 3. In the cavity of Case 1, an additional separation takes place, displacing the phase into the central, axial part of the apparatus and diverting its turn to a hollow shaft 6 In this case, the liquid phase previously clarified in the paddle wheel is combined with the clarified phase in the cavity of housing 1. If the size of the peripheral discharge gap 7 is changed, for example, when different suspensions are separated, differing from each other in both the viscosity of the liquid phase and dispersion, granulometric composition and solids content, as well as in order to free the gap from solid particles), the apparatus is stopped and, without disassembling, using a nut 16c with different internal threads at its ends, establish (increase or decrease) the size of the gap (when blocking the gap only increases) and with two pins 18 and 17 are rigidly fixed. The device's device makes it possible to eliminate its partial disassembly and reassembly and significantly reduce unproductive stops, which ultimately improves the performance of the device. In the Dzerzhinsk branch of NIIkhimmash, a centrifugal apparatus has been designed to purify waste oils and other petroleum products from mechanical strains, and produce a 45-line plug using aut. sv.528120. The device was manufactured in the SEZ D / F NIIkhimmash, tested on the section of highly viscous suspensions (waste maelo) and started up & Eusp / Uatation on the Zagorsky Uch1asgke Obie Ineni Vgornegeprogzukt. When you change the size of the gap of a hollow blade. The wheels for the reasons given are not time consuming for partial disassembly, the re-sizing of the gap size is an hour. On the apparatus according to the invention, this overhead cost is eliminated, it means saving. It is one hour of operation of the apparatus or 45 m / h. The approximate number of stops of the device due to the deletion of the peripheral discharge gap of the impeller is once per hour per month (2 O4 hours) of work. The total number of stops per year is 1x12 12. The economy is, as indicated, 45 oils or 45x1OOOL / h 45OOO l / h. The cost of 1 liter of waste oil ravlichnyh brands - O, OO7 rubles. The cost of 1 liter of regenerated oil of various brands O, 2-O, 7 rub. Calculation is carried out, at a cost of about 3 rubles. Retail cost of 1 liter of regenerated and used oil is 0, 2-О ,, 193 rubles. 12x45 Oooh, 22 thousand rubles. per year Formula Ula Inventions 1. Centrifugal apparatus for the suspension separation according to the ed. St. 52812О, about the fact that, in order to increase the work resources, the upper disk is equipped with a mechanism for its movement along the apparatus axis for adjusting the bulk unloading slit. 2. The apparatus according to claim I, of which is that the mechanism for moving the upper disk includes a sleeve connected to the radial wall mounted on a vada with possibility of sliding movement, and a nut, and Shaft on the top surface of the threaded nut. Sources of information taken into account in the examination I. USSR author's certificate N 528120, cl. B O4 B 5/12, 1974.

ffcffe / r7 e / // ff

Fg / g f

/ fflf

/ 7 / U

li

-fff

Fa g

f-ff ftecmff vff / fece / fVA W

U // fffA6 / I

f-f / fef / f / if // y / 77ff

Phage.d

Fg / g4

Claims (2)

Claim 1. Centrifugal apparatus for separating suspensions according to ed. St. No. 528120, characterized in that, in order to increase work resources, the upper disk is equipped with a mechanism for moving it along the axis of the apparatus for regulating the annular discharge gap. 2. The device pop. 1, characterized in that the mechanism for moving the upper disk includes a sleeve connected to the radial armrest mounted on a vada with the possibility of axial movement, and a nut, while the upper sections of the sleeve and shaft thread a thread interacting with the nut thread on the upper surface.