SU1396339A1 - Centrifugal clarifier - Google Patents

Description

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The invention relates to a machine structure, namely, devices for centrifugal separation of liquid inhomogeneous systems, in particular, apparatus for clarifying suspensions and emulsions.

The purpose of the invention is to improve the performance of the clarifier and improve the discharge of sediment.

Fig, 1 shows a centrifugal clarifier, a longitudinal section; FIG. 2 shows a section A-A in fig, 1.

The centrifugal clarifier comprises a housing 1 with a channel 2 for introducing a suspension and a channel 3 for introducing a washing liquid concentric with channel 2, Channels 2 and 3 form a tubular nozzle 4, In channel 2 for introducing a suspension radially made nozzles 5, above which are located radial holes 6, made in channel 3 input wash liquid. The housing 1 is also equipped with a pipe outlet 7

17 and through the openings 18 are led out of the rotor 14 into the annular cavity 9 of the centrate gathering, from which through the nozzle 8 is led out of the apparatus. The solid particles of the suspension under the action of centrifugal force are deposited on the walls of the rotor and accumulate there, forming a layer of sludge that prevents the scraper 21 from moving relative to the rotor 14. As a result, the suspension rotates with the frequency of rotation of the rotor 14, which increases the productivity of the apparatus,

15 As the sediment accumulates, the clarification ratio of the apparatus decreases and the apparatus stops to discharge the sediment after the suspension supply is turned off. When the rotor stops

20 1 the suspension contained in it is poured down by the weight through the holes 16 into the nozzle 7, the sediment in the rotor 14 is mechanically loosened by the scraper 21 when turning it,

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sediment with washing liquid, nozzle-25. For example, a key for a socket 24 on a rod of a lump 8 of a draft of fugata and an annular cavity 9 of the collection of fugatao B of the upper part of the device is placed bearing 10 and a motor P with a pulley 12 and a belt 13 15, having a hole 16, an annular overflow 17 and a hole 18 is fixed on the hollow shaft 19 with a pulley 20. In the rotor 14 is mounted with. rotatable with respect to it is a scraper 21, embodied in the form of a cross, mounted on a rod 22 passing through a hollow shaft 19 and centered with sliding sleeves 23, as a result of which a scraper 21 can rotate relative to a rotor 14, On the output part a rod 22 scraper 21 has a socket 24 turnkey.

The contour of the scraper 21 with the minimum clearance repeats the contour of the axial section of the inner surface of the rotor j pa 14. With an accuracy of 5 ohms the gap of the gap of the scraper 21 is centered and fixed in the axial direction of the inner surface of the rotor 14,

Centrifugal clarifier works as follows.

The suspension through channel 2 is fed into the nozzle 4 and through the nozzles 5 it jets out onto the conical bottom 15 of the rotating:: rotary rotor 14, where it flows in an axially upward direction, flows through; inner edge of the annular re 45

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22. At the same time, through the channel 3, under pressure, a short flow of industrial liquid is supplied, which, passing through the inlet 4 and the radial holes 6, additionally jets and spreads the sediment to the state of the pulp flowing out of the rotor 14. nipple 7

outside the apparatus, 1

The invention allows to increase the productivity of the apparatus due to the full use of centrifugal force, as well as to reduce the time spent on cleaning the apparatus from sediment and reduce the volume of washing liquid by more than 4 times.

Claims (1)

Invention Formula A centrifugal clarifier, an enclosure with channels for injecting slurry and washing liquid, a nozzle outlet, a rotor with a bottom and a shaft, characterized in that, in order to improve the clarifier's performance and to improve the discharge of sediment, it is equipped with a scraper installed in the rotor with the possibility of rotation, made in the form of a cross with a rod located inside the shaft, the channel for introducing the suspension is made with nozzles placed in the zone of the rotor bottom, and the channel for entering the washing 17 and through the openings 18 are led out of the rotor 14 into the annular cavity 9 of the centrate gathering, from which through the nozzle 8 is led out of the apparatus. The solid particles of the suspension under the action of centrifugal force are deposited on the walls of the rotor and accumulate there, forming a layer of sludge preventing movement of the scraper 21 relative to the rotor 14. As a result, the suspension rotates with the frequency of rotation of the rotor 14, which increases the productivity of the apparatus, As sediment accumulates, the clarification ratio of the apparatus decreases and the apparatus stops to discharge the sediment after the suspension supply is turned off. When the rotor stops 1 the suspension contained in it is poured down by the weight through the holes 16 into the nozzle 7, the sediment in the rotor 14 is mechanically loosened by the scraper 21 when turning it, . for example with a key for socket 24 on the stock 22. At the same time, through the channel 3, under pressure, a short flow of industrial liquid is supplied, which, passing through the inlet 4 and the radial holes 6, additionally jets and spreads the sediment to the state of the pulp flowing out of the rotor 14. nipple 7 outside the apparatus, 1 The invention allows to increase the productivity of the apparatus due to the full use of centrifugal force, as well as to reduce the time spent on cleaning the apparatus from sediment and reduce the volume of washing liquid by more than 4 times. Invention Formula A centrifugal clarifier, an enclosure with channels for injecting slurry and washing liquid, a nozzle outlet, a rotor with a bottom and a shaft, characterized in that, in order to improve the clarifier's performance and to improve the discharge of sediment, it is equipped with a scraper installed in the rotor with the possibility of rotation, made in the form of a cross with a rod located inside the shaft, the channel for introducing the suspension is made with nozzles placed in the zone of the rotor bottom, and the channel for entering the washing 5-13963396 The fluid is located concentric with the cadal openings, which are located at the entrance of the suspension and are filled with radar over the nozzles. FIG 2